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GitHub - jandelgado/jled: Non-blocking LED controlling library for Arduino and friends.
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class="HeaderMenu-wrapper d-flex flex-column flex-self-start flex-lg-row flex-auto rounded rounded-lg-0"> <nav class="HeaderMenu-nav" aria-label="Global"> <ul class="d-lg-flex list-style-none"> <li class="HeaderMenu-item position-relative flex-wrap flex-justify-between flex-items-center d-block d-lg-flex flex-lg-nowrap flex-lg-items-center js-details-container js-header-menu-item"> <button type="button" class="HeaderMenu-link border-0 width-full width-lg-auto px-0 px-lg-2 py-lg-2 no-wrap d-flex flex-items-center flex-justify-between js-details-target" aria-expanded="false"> Product <svg opacity="0.5" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-down HeaderMenu-icon ml-1"> <path d="M12.78 5.22a.749.749 0 0 1 0 1.06l-4.25 4.25a.749.749 0 0 1-1.06 0L3.22 6.28a.749.749 0 1 1 1.06-1.06L8 8.939l3.72-3.719a.749.749 0 0 1 1.06 0Z"></path> </svg> </button> <div class="HeaderMenu-dropdown dropdown-menu 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version="1.1" width="24" data-view-component="true" class="octicon octicon-shield-check color-fg-subtle mr-3"> <path d="M16.53 9.78a.75.75 0 0 0-1.06-1.06L11 13.19l-1.97-1.97a.75.75 0 0 0-1.06 1.06l2.5 2.5a.75.75 0 0 0 1.06 0l5-5Z"></path><path d="m12.54.637 8.25 2.675A1.75 1.75 0 0 1 22 4.976V10c0 6.19-3.771 10.704-9.401 12.83a1.704 1.704 0 0 1-1.198 0C5.77 20.705 2 16.19 2 10V4.976c0-.758.489-1.43 1.21-1.664L11.46.637a1.748 1.748 0 0 1 1.08 0Zm-.617 1.426-8.25 2.676a.249.249 0 0 0-.173.237V10c0 5.46 3.28 9.483 8.43 11.426a.199.199 0 0 0 .14 0C17.22 19.483 20.5 15.461 20.5 10V4.976a.25.25 0 0 0-.173-.237l-8.25-2.676a.253.253 0 0 0-.154 0Z"></path> </svg> <div> <div class="color-fg-default h4">GitHub Advanced Security</div> Find and fix vulnerabilities </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" 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1.5h-.5a.75.75 0 0 1-.75-.75Z"></path> </svg> <div> <div class="color-fg-default h4">Codespaces</div> Instant dev environments </div> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description pb-lg-3" data-analytics-event="{"location":"navbar","action":"issues","context":"product","tag":"link","label":"issues_link_product_navbar"}" href="https://github.com/features/issues"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-issue-opened color-fg-subtle mr-3"> <path d="M12 1c6.075 0 11 4.925 11 11s-4.925 11-11 11S1 18.075 1 12 5.925 1 12 1ZM2.5 12a9.5 9.5 0 0 0 9.5 9.5 9.5 9.5 0 0 0 9.5-9.5A9.5 9.5 0 0 0 12 2.5 9.5 9.5 0 0 0 2.5 12Zm9.5 2a2 2 0 1 1-.001-3.999A2 2 0 0 1 12 14Z"></path> </svg> <div> <div class="color-fg-default h4">Issues</div> Plan and track work </div> </a></li> <li> <a 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0v3.5A1.75 1.75 0 0 1 12.25 14h-8.5A1.75 1.75 0 0 1 2 12.25v-8.5C2 2.784 2.784 2 3.75 2Zm6.854-1h4.146a.25.25 0 0 1 .25.25v4.146a.25.25 0 0 1-.427.177L13.03 4.03 9.28 7.78a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042l3.75-3.75-1.543-1.543A.25.25 0 0 1 10.604 1Z"></path> </svg> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary Link--external" target="_blank" data-analytics-event="{"location":"navbar","action":"github_skills","context":"product","tag":"link","label":"github_skills_link_product_navbar"}" href="https://skills.github.com"> GitHub Skills <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-link-external HeaderMenu-external-icon color-fg-subtle"> <path d="M3.75 2h3.5a.75.75 0 0 1 0 1.5h-3.5a.25.25 0 0 0-.25.25v8.5c0 .138.112.25.25.25h8.5a.25.25 0 0 0 .25-.25v-3.5a.75.75 0 0 1 1.5 0v3.5A1.75 1.75 0 0 1 12.25 14h-8.5A1.75 1.75 0 0 1 2 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id="validation-96c6aaa9-2299-44f7-a61d-ec9e3cea11f2" hidden="hidden"> <span class="FormControl-inlineValidation--visual"> <svg aria-hidden="true" height="12" viewBox="0 0 12 12" version="1.1" width="12" data-view-component="true" class="octicon octicon-alert-fill"> <path d="M4.855.708c.5-.896 1.79-.896 2.29 0l4.675 8.351a1.312 1.312 0 0 1-1.146 1.954H1.33A1.313 1.313 0 0 1 .183 9.058ZM7 7V3H5v4Zm-1 3a1 1 0 1 0 0-2 1 1 0 0 0 0 2Z"></path> </svg> </span> <span></span> </div> </div> <div data-target="query-builder.screenReaderFeedback" aria-live="polite" aria-atomic="true" class="sr-only"></div> </query-builder></form> <div class="d-flex flex-row color-fg-muted px-3 text-small color-bg-default search-feedback-prompt"> <a target="_blank" href="https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax" data-view-component="true" class="Link color-fg-accent text-normal ml-2">Search syntax tips</a> <div class="d-flex flex-1"></div> </div> </div> </div> </div> </modal-dialog></div> </div> <div data-action="click:qbsearch-input#retract" class="dark-backdrop position-fixed" hidden data-target="qbsearch-input.darkBackdrop"></div> <div class="color-fg-default"> <dialog-helper> <dialog data-target="qbsearch-input.feedbackDialog" data-action="close:qbsearch-input#handleDialogClose cancel:qbsearch-input#handleDialogClose" id="feedback-dialog" aria-modal="true" aria-labelledby="feedback-dialog-title" aria-describedby="feedback-dialog-description" data-view-component="true" class="Overlay Overlay-whenNarrow Overlay--size-medium Overlay--motion-scaleFade Overlay--disableScroll"> <div data-view-component="true" class="Overlay-header"> <div class="Overlay-headerContentWrap"> <div class="Overlay-titleWrap"> <h1 class="Overlay-title " id="feedback-dialog-title"> Provide feedback </h1> </div> <div class="Overlay-actionWrap"> <button data-close-dialog-id="feedback-dialog" aria-label="Close" type="button" data-view-component="true" class="close-button 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seriously.</p> <textarea name="feedback" class="form-control width-full mb-2" style="height: 120px" id="feedback"></textarea> <input name="include_email" id="include_email" aria-label="Include my email address so I can be contacted" class="form-control mr-2" type="checkbox"> <label for="include_email" style="font-weight: normal">Include my email address so I can be contacted</label> </form></div> </scrollable-region> <div data-view-component="true" class="Overlay-footer Overlay-footer--alignEnd"> <button data-close-dialog-id="feedback-dialog" type="button" data-view-component="true" class="btn"> Cancel </button> <button form="code-search-feedback-form" data-action="click:qbsearch-input#submitFeedback" type="submit" data-view-component="true" class="btn-primary btn"> Submit feedback </button> </div> </dialog></dialog-helper> <custom-scopes data-target="qbsearch-input.customScopesManager"> <dialog-helper> <dialog data-target="custom-scopes.customScopesModalDialog" data-action="close:qbsearch-input#handleDialogClose cancel:qbsearch-input#handleDialogClose" id="custom-scopes-dialog" aria-modal="true" aria-labelledby="custom-scopes-dialog-title" aria-describedby="custom-scopes-dialog-description" data-view-component="true" class="Overlay Overlay-whenNarrow Overlay--size-medium Overlay--motion-scaleFade Overlay--disableScroll"> <div data-view-component="true" class="Overlay-header Overlay-header--divided"> <div class="Overlay-headerContentWrap"> <div class="Overlay-titleWrap"> <h1 class="Overlay-title " id="custom-scopes-dialog-title"> Saved searches </h1> <h2 id="custom-scopes-dialog-description" class="Overlay-description">Use saved searches to filter your results more quickly</h2> </div> <div class="Overlay-actionWrap"> <button data-close-dialog-id="custom-scopes-dialog" aria-label="Close" type="button" data-view-component="true" class="close-button Overlay-closeButton"><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-x"> <path d="M3.72 3.72a.75.75 0 0 1 1.06 0L8 6.94l3.22-3.22a.749.749 0 0 1 1.275.326.749.749 0 0 1-.215.734L9.06 8l3.22 3.22a.749.749 0 0 1-.326 1.275.749.749 0 0 1-.734-.215L8 9.06l-3.22 3.22a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042L6.94 8 3.72 4.78a.75.75 0 0 1 0-1.06Z"></path> </svg></button> </div> </div> </div> <scrollable-region data-labelled-by="custom-scopes-dialog-title"> <div data-view-component="true" class="Overlay-body"> <div data-target="custom-scopes.customScopesModalDialogFlash"></div> <div hidden class="create-custom-scope-form" data-target="custom-scopes.createCustomScopeForm"> <!-- '"` --><!-- </textarea></xmp> --></option></form><form id="custom-scopes-dialog-form" data-turbo="false" action="/search/custom_scopes" accept-charset="UTF-8" method="post"><input type="hidden" data-csrf="true" name="authenticity_token" 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just released \u003ca href=\"https://github.com/jandelgado/jled-circuitpython\"\u003ejled-circuitpython\u003c/a\u003e,\na JLed implementation for CircuitPython and MicroPython.\n\u003c/td\u003e\u003c/tr\u003e\u003c/tbody\u003e\u003c/table\u003e\u003c/markdown-accessiblity-table\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eJLed - Advanced LED Library\u003c/h1\u003e\u003ca id=\"user-content-jled---advanced-led-library\" class=\"anchor\" aria-label=\"Permalink: JLed - Advanced LED Library\" href=\"#jled---advanced-led-library\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ca target=\"_blank\" rel=\"noopener noreferrer\" href=\"https://github.com/jandelgado/jled/workflows/run%20tests/badge.svg\"\u003e\u003cimg src=\"https://github.com/jandelgado/jled/workflows/run%20tests/badge.svg\" alt=\"run tests\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\n\u003ca href=\"https://coveralls.io/github/jandelgado/jled?branch=master\" rel=\"nofollow\"\u003e\u003cimg src=\"https://camo.githubusercontent.com/5d6523e33355630ad66d77f50eb08bd17a622949aaf2cd62d2d72ac6209b45d7/68747470733a2f2f636f766572616c6c732e696f2f7265706f732f6769746875622f6a616e64656c6761646f2f6a6c65642f62616467652e7376673f6272616e63683d6d61737465722664756d6d793d31\" alt=\"Coverage Status\" data-canonical-src=\"https://coveralls.io/repos/github/jandelgado/jled/badge.svg?branch=master\u0026amp;dummy=1\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eAn embedded C++ library to control LEDs. It uses a \u003cstrong\u003enon-blocking\u003c/strong\u003e approach and can\ncontrol LEDs in simple (\u003cstrong\u003eon\u003c/strong\u003e/\u003cstrong\u003eoff\u003c/strong\u003e) and complex (\u003cstrong\u003eblinking\u003c/strong\u003e,\n\u003cstrong\u003ebreathing\u003c/strong\u003e and more) ways in a \u003cstrong\u003etime-driven\u003c/strong\u003e manner.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eJLed got some \u003ca href=\"https://hackaday.com/2018/06/13/simplifying-basic-led-effects/\" rel=\"nofollow\"\u003ecoverage on Hackaday\u003c/a\u003e\nand someone did a \u003ca href=\"https://youtu.be/x5V2vdpZq1w\" rel=\"nofollow\"\u003evideo tutorial for JLed\u003c/a\u003e - Thanks!\u003c/p\u003e\n\u003cmarkdown-accessiblity-table\u003e\u003ctable\u003e\n \u003ctbody\u003e\u003ctr\u003e\n \u003cth\u003eJLed in action\u003c/th\u003e\n \u003cth\u003eInteractive JLed playground\u003c/th\u003e\n \u003c/tr\u003e\n\u003ctr\u003e\n \u003ctd\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/multiled\"\u003e\u003cimg alt=\"JLed in action\" src=\"/jandelgado/jled/raw/master/doc/jled.gif\" width=\"256\" data-animated-image=\"\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003c/td\u003e\n \u003ctd\u003e\u003ca href=\"https://jandelgado.github.io/jled-wasm\" rel=\"nofollow\"\u003e\u003cimg alt=\"jled running in the browser\" src=\"/jandelgado/jled/raw/master/doc/jled-wasm.png\" width=\"256\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\n \u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\u003c/table\u003e\u003c/markdown-accessiblity-table\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExample\u003c/h2\u003e\u003ca id=\"user-content-example\" class=\"anchor\" aria-label=\"Permalink: Example\" href=\"#example\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-c++ notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"// breathe LED (on gpio 9) 6 times for 1500ms, waiting for 500ms after each run\n#include \u0026lt;jled.h\u0026gt;\n\nauto led_breathe = JLed(9).Breathe(1500).Repeat(6).DelayAfter(500);\n\nvoid setup() { }\n\nvoid loop() {\n led_breathe.Update();\n}\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e breathe LED (on gpio 9) 6 times for 1500ms, waiting for 500ms after each run\u003c/span\u003e\n#\u003cspan class=\"pl-k\"\u003einclude\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\u0026lt;\u003c/span\u003ejled.h\u003cspan class=\"pl-pds\"\u003e\u0026gt;\u003c/span\u003e\u003c/span\u003e\n\n\u003cspan class=\"pl-k\"\u003eauto\u003c/span\u003e led_breathe = JLed(\u003cspan class=\"pl-c1\"\u003e9\u003c/span\u003e).Breathe(\u003cspan class=\"pl-c1\"\u003e1500\u003c/span\u003e).Repeat(\u003cspan class=\"pl-c1\"\u003e6\u003c/span\u003e).DelayAfter(\u003cspan class=\"pl-c1\"\u003e500\u003c/span\u003e);\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003esetup\u003c/span\u003e() { }\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eloop\u003c/span\u003e() {\n led_breathe.\u003cspan class=\"pl-c1\"\u003eUpdate\u003c/span\u003e();\n}\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eContents\u003c/h2\u003e\u003ca id=\"user-content-contents\" class=\"anchor\" aria-label=\"Permalink: Contents\" href=\"#contents\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#features\"\u003eFeatures\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#cheat-sheet\"\u003eCheat Sheet\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#installation\"\u003eInstallation\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#arduino-ide\"\u003eArduino IDE\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#platformio\"\u003ePlatformIO\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#usage\"\u003eUsage\u003c/a\u003e\n* \u003ca href=\"#output-pipeline\"\u003eOutput pipeline\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#effects\"\u003eEffects\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#static-on-and-off\"\u003eStatic on and off\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#static-on-example\"\u003eStatic on example\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#blinking\"\u003eBlinking\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#blinking-example\"\u003eBlinking example\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#breathing\"\u003eBreathing\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#breathing-example\"\u003eBreathing example\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#candle\"\u003eCandle\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#candle-example\"\u003eCandle example\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#fadeon\"\u003eFadeOn\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#fadeon-example\"\u003eFadeOn example\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#fadeoff\"\u003eFadeOff\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#fade\"\u003eFade\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#fade-example\"\u003eFade example\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#user-provided-brightness-function\"\u003eUser provided brightness function\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#user-provided-brightness-function-example\"\u003eUser provided brightness function example\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#delays-and-repetitions\"\u003eDelays and repetitions\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#initial-delay-before-effect-starts\"\u003eInitial delay before effect starts\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#delay-after-effect-finished\"\u003eDelay after effect finished\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#repetitions\"\u003eRepetitions\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#state-functions\"\u003eState functions\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#update\"\u003eUpdate\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#isrunning\"\u003eIsRunning\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#reset\"\u003eReset\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#immediate-stop\"\u003eImmediate Stop\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#misc-functions\"\u003eMisc functions\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#low-active-for-inverted-output\"\u003eLow active for inverted output\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#minimum--and-maximum-brightness-level\"\u003eMinimum- and Maximum brightness level\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#controlling-a-group-of-leds\"\u003eControlling a group of LEDs\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#framework-notes\"\u003eFramework notes\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#platform-notes\"\u003ePlatform notes\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#esp8266\"\u003eESP8266\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#esp32\"\u003eESP32\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#using-esp-idf\"\u003eUsing ESP-IDF\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#stm32\"\u003eSTM32\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#arduino-framework\"\u003eArduino framework\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#raspberry-pi-pico\"\u003eRaspberry Pi Pico\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#example-sketches\"\u003eExample sketches\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#building-examples-with-platformio\"\u003eBuilding examples with PlatformIO\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#building-examples-with-the-arduino-ide\"\u003eBuilding examples with the Arduino IDE\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#extending\"\u003eExtending\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#support-new-hardware\"\u003eSupport new hardware\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#unit-tests\"\u003eUnit tests\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#contributing\"\u003eContributing\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eFAQ\u003c/a\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"#how-do-i-check-if-a-jled-object-is-still-being-updated\"\u003eHow do I check if a JLed object is still being updated?\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#how-do-i-restart-an-effect\"\u003eHow do I restart an effect?\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#how-do-i-change-a-running-effect\"\u003eHow do I change a running effect?\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#author-and-copyright\"\u003eAuthor and Copyright\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"#license\"\u003eLicense\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFeatures\u003c/h2\u003e\u003ca id=\"user-content-features\" class=\"anchor\" aria-label=\"Permalink: Features\" href=\"#features\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003enon-blocking\u003c/li\u003e\n\u003cli\u003eeffects: simple on/off, breathe, blink, candle, fade-on, fade-off, \u003ca href=\"/jandelgado/jled/blob/master/examples/morse\"\u003euser-defined\u003c/a\u003e (e.g. morse)\u003c/li\u003e\n\u003cli\u003esupports inverted polarity of LED\u003c/li\u003e\n\u003cli\u003eeasy configuration using fluent interface\u003c/li\u003e\n\u003cli\u003ecan control groups of LEDs sequentially or in parallel\u003c/li\u003e\n\u003cli\u003ePortable: Arduino, ESP8266, ESP32, Mbed, Raspberry Pi Pico and more platforms\ncompatible, runs even in the \u003ca href=\"https://jandelgado.github.io/jled-wasm\" rel=\"nofollow\"\u003ebrowser\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003esupports Arduino, \u003ca href=\"https://www.mbed.com\" rel=\"nofollow\"\u003embed\u003c/a\u003e, \u003ca href=\"https://github.com/raspberrypi/pico-sdk\"\u003eRaspberry Pi\nPico\u003c/a\u003e and ESP32\n\u003ca href=\"https://www.espressif.com/en/products/sdks/esp-idf\" rel=\"nofollow\"\u003eESP-IDF\u003c/a\u003e SDK's\u003c/li\u003e\n\u003cli\u003ewell \u003ca href=\"https://coveralls.io/github/jandelgado/jled\" rel=\"nofollow\"\u003etested\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eCheat Sheet\u003c/h2\u003e\u003ca id=\"user-content-cheat-sheet\" class=\"anchor\" aria-label=\"Permalink: Cheat Sheet\" href=\"#cheat-sheet\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ca target=\"_blank\" rel=\"noopener noreferrer\" href=\"/jandelgado/jled/blob/master/doc/cheat_sheet.jpg\"\u003e\u003cimg src=\"/jandelgado/jled/raw/master/doc/cheat_sheet.jpg\" alt=\"JLed Cheat Sheet\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eInstallation\u003c/h2\u003e\u003ca id=\"user-content-installation\" class=\"anchor\" aria-label=\"Permalink: Installation\" href=\"#installation\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eArduino IDE\u003c/h3\u003e\u003ca id=\"user-content-arduino-ide\" class=\"anchor\" aria-label=\"Permalink: Arduino IDE\" href=\"#arduino-ide\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIn the main menu of the Arduino IDE, select \u003ccode\u003eSketch\u003c/code\u003e \u0026gt; \u003ccode\u003eInclude Library\u003c/code\u003e \u0026gt;\n\u003ccode\u003eManage Libraries...\u003c/code\u003e and search for \u003ccode\u003ejled\u003c/code\u003e, then press \u003ccode\u003einstall\u003c/code\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003ePlatformIO\u003c/h3\u003e\u003ca id=\"user-content-platformio\" class=\"anchor\" aria-label=\"Permalink: PlatformIO\" href=\"#platformio\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eAdd \u003ccode\u003ejled\u003c/code\u003e to your library dependencies in your \u003ccode\u003eplatformio.ini\u003c/code\u003e project file,\ne.g.\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-ini notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"...\n[env:nanoatmega328]\nplatform = atmelavr\nboard = nanoatmega328\nframework = arduino\nlib_deps=jled\n...\"\u003e\u003cpre\u003e...\n\u003cspan class=\"pl-en\"\u003e[env:nanoatmega328]\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eplatform\u003c/span\u003e = atmelavr\n\u003cspan class=\"pl-k\"\u003eboard\u003c/span\u003e = nanoatmega328\n\u003cspan class=\"pl-k\"\u003eframework\u003c/span\u003e = arduino\n\u003cspan class=\"pl-k\"\u003elib_deps\u003c/span\u003e=jled\n...\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eUsage\u003c/h2\u003e\u003ca id=\"user-content-usage\" class=\"anchor\" aria-label=\"Permalink: Usage\" href=\"#usage\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eFirst, the LED object is constructed and configured, then the state is updated\nwith subsequent calls to the \u003ccode\u003eUpdate()\u003c/code\u003e method, typically from the \u003ccode\u003eloop()\u003c/code\u003e\nfunction. While the effect is active, \u003ccode\u003eUpdate\u003c/code\u003e returns \u003ccode\u003etrue\u003c/code\u003e, otherwise\n\u003ccode\u003efalse\u003c/code\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe constructor takes the pin, to which the LED is connected to as\nthe only argument. Further configuration of the LED object is done using a fluent\ninterface, e.g. \u003ccode\u003eJLed led = JLed(13).Breathe(2000).DelayAfter(1000).Repeat(5)\u003c/code\u003e.\nSee the examples section below for further details.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eOutput pipeline\u003c/h4\u003e\u003ca id=\"user-content-output-pipeline\" class=\"anchor\" aria-label=\"Permalink: Output pipeline\" href=\"#output-pipeline\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eFirst the configured effect (e.g. \u003ccode\u003eFade\u003c/code\u003e) is evaluated for the current time\n\u003ccode\u003et\u003c/code\u003e. JLed internally uses unsigned bytes to represent brightness values,\nranging from 0 to 255. Next, the value is scaled to the limits set by\n\u003ccode\u003eMinBrightness\u003c/code\u003e and \u003ccode\u003eMaxBrightness\u003c/code\u003e (optionally). When the effect is configured\nfor a low-active LED using \u003ccode\u003eLowActive\u003c/code\u003e, the brightness value will be inverted,\ni.e., the value will be subtracted from 255. Finally the value is passed to the\nhardware abstraction, which might scale it to the resolution used by the actual\ndevice (e.g. 10 bits for an ESP8266). Finally the brightness value is written\nout to the configure GPIO.\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"┌───────────┐ ┌────────────┐ ┌─────────┐ ┌────────┐ ┌─────────┐ ┌────────┐\n│ Evaluate │ │ Scale to │ │ Low │YES │ Invert │ │Scale for│ │Write to│\n│ effect(t) ├───►│ [min, max] ├───►│ active? ├───►│ signal ├───►│Hardware ├───►│ GPIO │\n└───────────┘ └────────────┘ └────┬────┘ └────────┘ └───▲─────┘ └────────┘\n │ NO │\n └───────────────────────────┘\"\u003e\u003cpre lang=\"text\" class=\"notranslate\"\u003e\u003ccode\u003e┌───────────┐ ┌────────────┐ ┌─────────┐ ┌────────┐ ┌─────────┐ ┌────────┐\n│ Evaluate │ │ Scale to │ │ Low │YES │ Invert │ │Scale for│ │Write to│\n│ effect(t) ├───►│ [min, max] ├───►│ active? ├───►│ signal ├───►│Hardware ├───►│ GPIO │\n└───────────┘ └────────────┘ └────┬────┘ └────────┘ └───▲─────┘ └────────┘\n │ NO │\n └───────────────────────────┘\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eEffects\u003c/h3\u003e\u003ca id=\"user-content-effects\" class=\"anchor\" aria-label=\"Permalink: Effects\" href=\"#effects\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eStatic on and off\u003c/h4\u003e\u003ca id=\"user-content-static-on-and-off\" class=\"anchor\" aria-label=\"Permalink: Static on and off\" href=\"#static-on-and-off\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eCalling \u003ccode\u003eOn(uint16_t period=1)\u003c/code\u003e turns the LED on. To immediately turn a LED on,\nmake a call like \u003ccode\u003eJLed(LED_BUILTIN).On().Update()\u003c/code\u003e. The \u003ccode\u003eperiod\u003c/code\u003e is optional\nand defaults to 1ms.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003ccode\u003eOff()\u003c/code\u003e works like \u003ccode\u003eOn()\u003c/code\u003e, except that it turns the LED off, i.e., it sets the\nbrightness to 0.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eUse the \u003ccode\u003eSet(uint8_t brightness, uint16_t period=1)\u003c/code\u003e method to set the\nbrightness to the given value, i.e., \u003ccode\u003eSet(255)\u003c/code\u003e is equivalent to calling \u003ccode\u003eOn()\u003c/code\u003e\nand \u003ccode\u003eSet(0)\u003c/code\u003e is equivalent to calling \u003ccode\u003eOff()\u003c/code\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eTechnically, \u003ccode\u003eSet\u003c/code\u003e, \u003ccode\u003eOn\u003c/code\u003e and \u003ccode\u003eOff\u003c/code\u003e are effects with a default period of 1ms, that\nset the brightness to a constant value. Specifying a different period has an\neffect on when the \u003ccode\u003eUpdate()\u003c/code\u003e method will be done updating the effect and\nreturn false (like for any other effects). This is important when for example\nin a \u003ccode\u003eJLedSequence\u003c/code\u003e the LED should stay on for a given amount of time.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eStatic on example\u003c/h5\u003e\u003ca id=\"user-content-static-on-example\" class=\"anchor\" aria-label=\"Permalink: Static on example\" href=\"#static-on-example\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-c++ notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"#include \u0026lt;jled.h\u0026gt;\n\n// turn builtin LED on after 1 second.\nauto led = JLed(LED_BUILTIN).On().DelayBefore(1000);\n\nvoid setup() { }\n\nvoid loop() {\n led.Update();\n}\"\u003e\u003cpre\u003e#\u003cspan class=\"pl-k\"\u003einclude\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\u0026lt;\u003c/span\u003ejled.h\u003cspan class=\"pl-pds\"\u003e\u0026gt;\u003c/span\u003e\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e turn builtin LED on after 1 second.\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eauto\u003c/span\u003e led = JLed(LED_BUILTIN).On().DelayBefore(\u003cspan class=\"pl-c1\"\u003e1000\u003c/span\u003e);\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003esetup\u003c/span\u003e() { }\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eloop\u003c/span\u003e() {\n led.\u003cspan class=\"pl-c1\"\u003eUpdate\u003c/span\u003e();\n}\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eBlinking\u003c/h4\u003e\u003ca id=\"user-content-blinking\" class=\"anchor\" aria-label=\"Permalink: Blinking\" href=\"#blinking\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIn blinking mode, the LED cycles through a given number of on-off cycles, on-\nand off-cycle durations are specified independently. The \u003ccode\u003eBlink()\u003c/code\u003e method takes\nthe duration for the on- and off cycle as arguments.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eBlinking example\u003c/h5\u003e\u003ca id=\"user-content-blinking-example\" class=\"anchor\" aria-label=\"Permalink: Blinking example\" href=\"#blinking-example\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-c++ notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"#include \u0026lt;jled.h\u0026gt;\n\n// blink internal LED every second; 1 second on, 0.5 second off.\nauto led = JLed(LED_BUILTIN).Blink(1000, 500).Forever();\n\nvoid setup() { }\n\nvoid loop() {\n led.Update();\n}\"\u003e\u003cpre\u003e#\u003cspan class=\"pl-k\"\u003einclude\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\u0026lt;\u003c/span\u003ejled.h\u003cspan class=\"pl-pds\"\u003e\u0026gt;\u003c/span\u003e\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e blink internal LED every second; 1 second on, 0.5 second off.\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eauto\u003c/span\u003e led = JLed(LED_BUILTIN).Blink(\u003cspan class=\"pl-c1\"\u003e1000\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e500\u003c/span\u003e).Forever();\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003esetup\u003c/span\u003e() { }\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eloop\u003c/span\u003e() {\n led.\u003cspan class=\"pl-c1\"\u003eUpdate\u003c/span\u003e();\n}\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eBreathing\u003c/h4\u003e\u003ca id=\"user-content-breathing\" class=\"anchor\" aria-label=\"Permalink: Breathing\" href=\"#breathing\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIn breathing mode, the LED smoothly changes the brightness using PWM. The\n\u003ccode\u003eBreathe()\u003c/code\u003e method takes the period of the effect as an argument.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eBreathing example\u003c/h5\u003e\u003ca id=\"user-content-breathing-example\" class=\"anchor\" aria-label=\"Permalink: Breathing example\" href=\"#breathing-example\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-c++ notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"#include \u0026lt;jled.h\u0026gt;\n\n// connect LED to pin 13 (PWM capable). LED will breathe with period of\n// 2000ms and a delay of 1000ms after each period.\nauto led = JLed(13).Breathe(2000).DelayAfter(1000).Forever();\n\nvoid setup() { }\n\nvoid loop() {\n led.Update();\n}\"\u003e\u003cpre\u003e#\u003cspan class=\"pl-k\"\u003einclude\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\u0026lt;\u003c/span\u003ejled.h\u003cspan class=\"pl-pds\"\u003e\u0026gt;\u003c/span\u003e\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e connect LED to pin 13 (PWM capable). LED will breathe with period of\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e 2000ms and a delay of 1000ms after each period.\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eauto\u003c/span\u003e led = JLed(\u003cspan class=\"pl-c1\"\u003e13\u003c/span\u003e).Breathe(\u003cspan class=\"pl-c1\"\u003e2000\u003c/span\u003e).DelayAfter(\u003cspan class=\"pl-c1\"\u003e1000\u003c/span\u003e).Forever();\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003esetup\u003c/span\u003e() { }\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eloop\u003c/span\u003e() {\n led.\u003cspan class=\"pl-c1\"\u003eUpdate\u003c/span\u003e();\n}\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIt is also possible to specify fade-on, on- and fade-off durations for the\nbreathing mode to customize the effect.\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-c++ notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"// LED will fade-on in 500ms, stay on for 1000ms, and fade-off in 500ms.\n// It will delay for 1000ms afterwards and continue the pattern.\nauto led = JLed(13).Breathe(500, 1000, 500).DelayAfter(1000).Forever();\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e LED will fade-on in 500ms, stay on for 1000ms, and fade-off in 500ms.\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e It will delay for 1000ms afterwards and continue the pattern.\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eauto\u003c/span\u003e led = JLed(\u003cspan class=\"pl-c1\"\u003e13\u003c/span\u003e).Breathe(\u003cspan class=\"pl-c1\"\u003e500\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e1000\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e500\u003c/span\u003e).DelayAfter(\u003cspan class=\"pl-c1\"\u003e1000\u003c/span\u003e).Forever();\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eCandle\u003c/h4\u003e\u003ca id=\"user-content-candle\" class=\"anchor\" aria-label=\"Permalink: Candle\" href=\"#candle\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIn candle mode, the random flickering of a candle or fire is simulated.\nThe builder method has the following signature:\n\u003ccode\u003eCandle(uint8_t speed, uint8_t jitter, uin16_t period)\u003c/code\u003e\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003espeed\u003c/code\u003e - controls the speed of the effect. 0 for fastest, increasing speed\ndivides into halve per increment. The default value is 7.\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003ejitter\u003c/code\u003e - the amount of jittering. 0 none (constant on), 255 maximum. Default\nvalue is 15.\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eperiod\u003c/code\u003e - Period of effect in ms. The default value is 65535 ms.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eThe default settings simulate a candle. For a fire effect for example use\ncall the method with \u003ccode\u003eCandle(5 /*speed*/, 100 /* jitter*/)\u003c/code\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eCandle example\u003c/h5\u003e\u003ca id=\"user-content-candle-example\" class=\"anchor\" aria-label=\"Permalink: Candle example\" href=\"#candle-example\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-c++ notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"#include \u0026lt;jled.h\u0026gt;\n\n// Candle on LED pin 13 (PWM capable).\nauto led = JLed(13).Candle();\n\nvoid setup() { }\n\nvoid loop() {\n led.Update();\n}\"\u003e\u003cpre\u003e#\u003cspan class=\"pl-k\"\u003einclude\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\u0026lt;\u003c/span\u003ejled.h\u003cspan class=\"pl-pds\"\u003e\u0026gt;\u003c/span\u003e\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e Candle on LED pin 13 (PWM capable).\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eauto\u003c/span\u003e led = JLed(\u003cspan class=\"pl-c1\"\u003e13\u003c/span\u003e).Candle();\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003esetup\u003c/span\u003e() { }\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eloop\u003c/span\u003e() {\n led.\u003cspan class=\"pl-c1\"\u003eUpdate\u003c/span\u003e();\n}\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFadeOn\u003c/h4\u003e\u003ca id=\"user-content-fadeon\" class=\"anchor\" aria-label=\"Permalink: FadeOn\" href=\"#fadeon\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIn FadeOn mode, the LED is smoothly faded on to 100% brightness using PWM. The\n\u003ccode\u003eFadeOn()\u003c/code\u003e method takes the period of the effect as an argument.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe brightness function uses an approximation of this function (example with\nperiod 1000):\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://www.wolframalpha.com/input/?i=plot+(exp(sin((t-1000%2F2.)*PI%2F1000))-0.36787944)*108.0++t%3D0+to+1000\" rel=\"nofollow\"\u003e\u003cimg src=\"/jandelgado/jled/raw/master/doc/fadeon_plot.png\" alt=\"fadeon function\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFadeOn example\u003c/h5\u003e\u003ca id=\"user-content-fadeon-example\" class=\"anchor\" aria-label=\"Permalink: FadeOn example\" href=\"#fadeon-example\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-c++ notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"#include \u0026lt;jled.h\u0026gt;\n\n// LED is connected to pin 9 (PWM capable) gpio\nauto led = JLed(9).FadeOn(1000).DelayBefore(2000);\n\nvoid setup() { }\n\nvoid loop() {\n led.Update();\n}\"\u003e\u003cpre\u003e#\u003cspan class=\"pl-k\"\u003einclude\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\u0026lt;\u003c/span\u003ejled.h\u003cspan class=\"pl-pds\"\u003e\u0026gt;\u003c/span\u003e\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e LED is connected to pin 9 (PWM capable) gpio\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eauto\u003c/span\u003e led = JLed(\u003cspan class=\"pl-c1\"\u003e9\u003c/span\u003e).FadeOn(\u003cspan class=\"pl-c1\"\u003e1000\u003c/span\u003e).DelayBefore(\u003cspan class=\"pl-c1\"\u003e2000\u003c/span\u003e);\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003esetup\u003c/span\u003e() { }\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eloop\u003c/span\u003e() {\n led.\u003cspan class=\"pl-c1\"\u003eUpdate\u003c/span\u003e();\n}\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFadeOff\u003c/h4\u003e\u003ca id=\"user-content-fadeoff\" class=\"anchor\" aria-label=\"Permalink: FadeOff\" href=\"#fadeoff\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIn FadeOff mode, the LED is smoothly faded off using PWM. The fade starts at\n100% brightness. Internally it is implemented as a mirrored version of the\nFadeOn function, i.e., FadeOff(t) = FadeOn(period-t). The \u003ccode\u003eFadeOff()\u003c/code\u003e method\ntakes the period of the effect as argument.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFade\u003c/h4\u003e\u003ca id=\"user-content-fade\" class=\"anchor\" aria-label=\"Permalink: Fade\" href=\"#fade\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe Fade effect allows to fade from any start value \u003ccode\u003efrom\u003c/code\u003e to any target value\n\u003ccode\u003eto\u003c/code\u003e with the given duration. Internally it sets up a \u003ccode\u003eFadeOn\u003c/code\u003e or \u003ccode\u003eFadeOff\u003c/code\u003e\neffect and \u003ccode\u003eMinBrightness\u003c/code\u003e and \u003ccode\u003eMaxBrightness\u003c/code\u003e values properly. The \u003ccode\u003eFade\u003c/code\u003e\nmethod take three arguments: \u003ccode\u003efrom\u003c/code\u003e, \u003ccode\u003eto\u003c/code\u003e and \u003ccode\u003eduration\u003c/code\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/fade_from_to\"\u003e\u003cimg alt=\"fade from-to\" src=\"/jandelgado/jled/raw/master/doc/fade_from-to.png\" height=\"200\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFade example\u003c/h5\u003e\u003ca id=\"user-content-fade-example\" class=\"anchor\" aria-label=\"Permalink: Fade example\" href=\"#fade-example\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"highlight highlight-source-c++ notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"#include \u0026lt;jled.h\u0026gt;\n\n// fade from 100 to 200 with period 1000\nauto led = JLed(9).Fade(100, 200, 1000);\n\nvoid setup() { }\n\nvoid loop() {\n led.Update();\n}\"\u003e\u003cpre\u003e#\u003cspan class=\"pl-k\"\u003einclude\u003c/span\u003e \u003cspan class=\"pl-s\"\u003e\u003cspan class=\"pl-pds\"\u003e\u0026lt;\u003c/span\u003ejled.h\u003cspan class=\"pl-pds\"\u003e\u0026gt;\u003c/span\u003e\u003c/span\u003e\n\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e fade from 100 to 200 with period 1000\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eauto\u003c/span\u003e led = JLed(\u003cspan class=\"pl-c1\"\u003e9\u003c/span\u003e).Fade(\u003cspan class=\"pl-c1\"\u003e100\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e200\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e1000\u003c/span\u003e);\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003esetup\u003c/span\u003e() { }\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eloop\u003c/span\u003e() {\n led.\u003cspan class=\"pl-c1\"\u003eUpdate\u003c/span\u003e();\n}\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eUser provided brightness function\u003c/h4\u003e\u003ca id=\"user-content-user-provided-brightness-function\" class=\"anchor\" aria-label=\"Permalink: User provided brightness function\" href=\"#user-provided-brightness-function\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIt is also possible to provide a user defined brightness evaluator. The class\nmust be derived from the \u003ccode\u003ejled::BrightnessEvaluator\u003c/code\u003e class and implement\ntwo methods:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003euint8_t Eval(uint32_t t) const\u003c/code\u003e - the brightness evaluation function that\ncalculates a brightness for the given time \u003ccode\u003et\u003c/code\u003e. The brightness must be returned\nas an unsigned byte, where 0 means LED off and 255 means full brightness.\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003euint16_t Period() const\u003c/code\u003e - period of the effect.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eAll time values are specified in milliseconds.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ca href=\"/jandelgado/jled/blob/master/examples/user_func\"\u003euser_func\u003c/a\u003e example demonstrates a simple user provided\nbrightness function, while the \u003ca href=\"/jandelgado/jled/blob/master/examples/morse\"\u003emorse\u003c/a\u003e example shows how a more\ncomplex application, allowing you to send morse codes (not necessarily with an\nLED), can be realized.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eUser provided brightness function example\u003c/h5\u003e\u003ca id=\"user-content-user-provided-brightness-function-example\" class=\"anchor\" aria-label=\"Permalink: User provided brightness function example\" href=\"#user-provided-brightness-function-example\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe example uses a user provided function to calculate the brightness.\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-c++ notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"class UserEffect : public jled::BrightnessEvaluator {\n public:\n uint8_t Eval(uint32_t t) const override {\n // this function changes between 0 and 255 and\n // vice versa every 250 ms.\n return 255*((t/250)%2);\n }\n // duration of effect: 5 seconds.\n uint16_t Period() const override { return 5000; }\n};\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eclass\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eUserEffect\u003c/span\u003e : \u003cspan class=\"pl-k\"\u003epublic\u003c/span\u003e \u003cspan class=\"pl-en\"\u003ejled\u003c/span\u003e::BrightnessEvaluator {\n \u003cspan class=\"pl-k\"\u003epublic:\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003euint8_t\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eEval\u003c/span\u003e(\u003cspan class=\"pl-c1\"\u003euint32_t\u003c/span\u003e t) \u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eoverride\u003c/span\u003e {\n \u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e this function changes between 0 and 255 and\u003c/span\u003e\n \u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e vice versa every 250 ms.\u003c/span\u003e\n \u003cspan class=\"pl-k\"\u003ereturn\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e255\u003c/span\u003e*((t/\u003cspan class=\"pl-c1\"\u003e250\u003c/span\u003e)%\u003cspan class=\"pl-c1\"\u003e2\u003c/span\u003e);\n }\n \u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e duration of effect: 5 seconds.\u003c/span\u003e\n \u003cspan class=\"pl-c1\"\u003euint16_t\u003c/span\u003e \u003cspan class=\"pl-en\"\u003ePeriod\u003c/span\u003e() \u003cspan class=\"pl-k\"\u003econst\u003c/span\u003e \u003cspan class=\"pl-k\"\u003eoverride\u003c/span\u003e { \u003cspan class=\"pl-k\"\u003ereturn\u003c/span\u003e \u003cspan class=\"pl-c1\"\u003e5000\u003c/span\u003e; }\n};\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eDelays and repetitions\u003c/h4\u003e\u003ca id=\"user-content-delays-and-repetitions\" class=\"anchor\" aria-label=\"Permalink: Delays and repetitions\" href=\"#delays-and-repetitions\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eInitial delay before effect starts\u003c/h5\u003e\u003ca id=\"user-content-initial-delay-before-effect-starts\" class=\"anchor\" aria-label=\"Permalink: Initial delay before effect starts\" href=\"#initial-delay-before-effect-starts\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eUse the \u003ccode\u003eDelayBefore()\u003c/code\u003e method to specify a delay before the first effect starts.\nThe default value is 0 ms.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eDelay after effect finished\u003c/h5\u003e\u003ca id=\"user-content-delay-after-effect-finished\" class=\"anchor\" aria-label=\"Permalink: Delay after effect finished\" href=\"#delay-after-effect-finished\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eUse the \u003ccode\u003eDelayAfter()\u003c/code\u003e method to specify a delay after each repetition of\nan effect. The default value is 0 ms.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eRepetitions\u003c/h5\u003e\u003ca id=\"user-content-repetitions\" class=\"anchor\" aria-label=\"Permalink: Repetitions\" href=\"#repetitions\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eUse the \u003ccode\u003eRepeat()\u003c/code\u003e method to specify the number of repetitions. The default\nvalue is 1 repetition. The \u003ccode\u003eForever()\u003c/code\u003e methods sets to repeat the effect\nforever. Each repetition includes a full period of the effect and the time\nspecified by \u003ccode\u003eDelayAfter()\u003c/code\u003e method.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eState functions\u003c/h4\u003e\u003ca id=\"user-content-state-functions\" class=\"anchor\" aria-label=\"Permalink: State functions\" href=\"#state-functions\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eUpdate\u003c/h5\u003e\u003ca id=\"user-content-update\" class=\"anchor\" aria-label=\"Permalink: Update\" href=\"#update\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eCall \u003ccode\u003eUpdate(int16_t *pLast=nullptr)\u003c/code\u003e or \u003ccode\u003eUpdate(uint32_t t, int16_t *pLast=nullptr)\u003c/code\u003e\nto periodically update the state of the LED.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003ccode\u003eUpdate\u003c/code\u003e returns \u003ccode\u003etrue\u003c/code\u003e, if the effect is active, or \u003ccode\u003efalse\u003c/code\u003e when it finished.\n\u003ccode\u003eUpdate()\u003c/code\u003e is a shortcut to call \u003ccode\u003eUpdate(uint32_t t)\u003c/code\u003e with the current time in\nmilliseconds.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eTo obtain the value of the last written brightness value (after applying min-\nand max-brightness transformations), pass an additional optional pointer\n\u003ccode\u003e*pLast\u003c/code\u003e , where this value will be stored, when it was written. Example:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-c++ notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"int16_t lastVal = -1;\nled.Update(\u0026amp;lastVal);\nif (lastVal != -1) {\n // the LED was updated with the brightness value now stored in lastVal\n ...\n}\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c1\"\u003eint16_t\u003c/span\u003e lastVal = -\u003cspan class=\"pl-c1\"\u003e1\u003c/span\u003e;\nled.Update(\u0026amp;lastVal);\n\u003cspan class=\"pl-k\"\u003eif\u003c/span\u003e (lastVal != -\u003cspan class=\"pl-c1\"\u003e1\u003c/span\u003e) {\n \u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e the LED was updated with the brightness value now stored in lastVal\u003c/span\u003e\n ...\n}\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eMost of the time just calling \u003ccode\u003eUpdate()\u003c/code\u003e without any parameters is what you want.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eSee \u003ca href=\"/jandelgado/jled/blob/master/examples/last_brightness\"\u003elast_brightness\u003c/a\u003e example for a working example.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eIsRunning\u003c/h5\u003e\u003ca id=\"user-content-isrunning\" class=\"anchor\" aria-label=\"Permalink: IsRunning\" href=\"#isrunning\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ccode\u003eIsRunning()\u003c/code\u003e returns \u003ccode\u003etrue\u003c/code\u003e if the current effect is running, else \u003ccode\u003efalse\u003c/code\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReset\u003c/h5\u003e\u003ca id=\"user-content-reset\" class=\"anchor\" aria-label=\"Permalink: Reset\" href=\"#reset\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eA call to \u003ccode\u003eReset()\u003c/code\u003e brings the JLed object to its initial state. Use it when\nyou want to start-over an effect.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eImmediate Stop\u003c/h5\u003e\u003ca id=\"user-content-immediate-stop\" class=\"anchor\" aria-label=\"Permalink: Immediate Stop\" href=\"#immediate-stop\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eCall \u003ccode\u003eStop()\u003c/code\u003e to immediately turn the LED off and stop any running effects.\nFurther calls to \u003ccode\u003eUpdate()\u003c/code\u003e will have no effect, unless the Led is reset using\n\u003ccode\u003eReset()\u003c/code\u003e or a new effect is activated. By default, \u003ccode\u003eStop()\u003c/code\u003e sets the current\nbrightness level to \u003ccode\u003eMinBrightness\u003c/code\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003ccode\u003eStop()\u003c/code\u003e takes an optional argument \u003ccode\u003emode\u003c/code\u003e of type \u003ccode\u003eJLed::eStopMode\u003c/code\u003e:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eif set to \u003ccode\u003eJLed::eStopMode::KEEP_CURRENT\u003c/code\u003e, the LEDs current level will be kept\u003c/li\u003e\n\u003cli\u003eif set to \u003ccode\u003eJLed::eStopMode::FULL_OFF\u003c/code\u003e the level of the LED is set to \u003ccode\u003e0\u003c/code\u003e,\nregardless of what \u003ccode\u003eMinBrightness\u003c/code\u003e is set to, effectively turning the LED off\u003c/li\u003e\n\u003cli\u003eif set to \u003ccode\u003eJLed::eStopMode::TO_MIN_BRIGHTNESS\u003c/code\u003e (default behavior), the LED\nwill set to the value of \u003ccode\u003eMinBrightness\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"highlight highlight-source-c++ notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"// stop the effect and set the brightness level to 0, regardless of min brightness\nled.Stop(JLed::eStopMode::FULL_OFF);\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e//\u003c/span\u003e stop the effect and set the brightness level to 0, regardless of min brightness\u003c/span\u003e\nled.Stop(JLed::eStopMode::FULL_OFF);\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eMisc functions\u003c/h4\u003e\u003ca id=\"user-content-misc-functions\" class=\"anchor\" aria-label=\"Permalink: Misc functions\" href=\"#misc-functions\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLow active for inverted output\u003c/h5\u003e\u003ca id=\"user-content-low-active-for-inverted-output\" class=\"anchor\" aria-label=\"Permalink: Low active for inverted output\" href=\"#low-active-for-inverted-output\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eUse the \u003ccode\u003eLowActive()\u003c/code\u003e method when the connected LED is low active. All output\nwill be inverted by JLed (i.e., instead of x, the value of 255-x will be set).\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eMinimum- and Maximum brightness level\u003c/h5\u003e\u003ca id=\"user-content-minimum--and-maximum-brightness-level\" class=\"anchor\" aria-label=\"Permalink: Minimum- and Maximum brightness level\" href=\"#minimum--and-maximum-brightness-level\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ccode\u003eMaxBrightness(uint8_t level)\u003c/code\u003e method is used to set the maximum brightness\nlevel of the LED. A level of 255 (the default) is full brightness, while 0\neffectively turns the LED off. In the same way, the \u003ccode\u003eMinBrightness(uint8_t level)\u003c/code\u003e\nmethod sets the minimum brightness level. The default minimum level is 0. If\nminimum or maximum brightness levels are set, the output value is scaled to be\nwithin the interval defined by \u003ccode\u003e[minimum brightness, maximum brightness]\u003c/code\u003e: a\nvalue of 0 will be mapped to the minimum brightness level, a value of 255 will\nbe mapped to the maximum brightness level.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ccode\u003euint_8 MaxBrightness() const\u003c/code\u003e method returns the current maximum\nbrightness level. \u003ccode\u003euint8_t MinBrightness() const\u003c/code\u003e returns the current minimum\nbrightness level.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eControlling a group of LEDs\u003c/h3\u003e\u003ca id=\"user-content-controlling-a-group-of-leds\" class=\"anchor\" aria-label=\"Permalink: Controlling a group of LEDs\" href=\"#controlling-a-group-of-leds\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ccode\u003eJLedSequence\u003c/code\u003e class allows controlling a group of \u003ccode\u003eJLed\u003c/code\u003e objects\nsimultaneously, either in parallel or sequentially, starting the next \u003ccode\u003eJLed\u003c/code\u003e\neffect when the previous finished. The constructor takes the mode (\u003ccode\u003ePARALLEL\u003c/code\u003e,\n\u003ccode\u003eSEQUENCE\u003c/code\u003e), an array of \u003ccode\u003eJLed\u003c/code\u003e objects and the size of the array, e.g.\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-c++ notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"JLed leds[] = {\n JLed(4).Blink(750, 250).Repeat(10),\n JLed(3).Breathe(2000).Repeat(5);\n};\n\nauto sequence = JLedSequence(JLedSequence::eMode::PARALLEL, leds).Repeat(2);\n\nvoid setup() {\n}\n\nvoid loop() {\n sequence.Update();\n}\"\u003e\u003cpre\u003eJLed leds[] = {\n \u003cspan class=\"pl-c1\"\u003eJLed\u003c/span\u003e(\u003cspan class=\"pl-c1\"\u003e4\u003c/span\u003e).\u003cspan class=\"pl-c1\"\u003eBlink\u003c/span\u003e(\u003cspan class=\"pl-c1\"\u003e750\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e250\u003c/span\u003e).\u003cspan class=\"pl-c1\"\u003eRepeat\u003c/span\u003e(\u003cspan class=\"pl-c1\"\u003e10\u003c/span\u003e),\n \u003cspan class=\"pl-c1\"\u003eJLed\u003c/span\u003e(\u003cspan class=\"pl-c1\"\u003e3\u003c/span\u003e).\u003cspan class=\"pl-c1\"\u003eBreathe\u003c/span\u003e(\u003cspan class=\"pl-c1\"\u003e2000\u003c/span\u003e).\u003cspan class=\"pl-c1\"\u003eRepeat\u003c/span\u003e(\u003cspan class=\"pl-c1\"\u003e5\u003c/span\u003e);\n};\n\n\u003cspan class=\"pl-k\"\u003eauto\u003c/span\u003e sequence = JLedSequence(JLedSequence::eMode::PARALLEL, leds).Repeat(\u003cspan class=\"pl-c1\"\u003e2\u003c/span\u003e);\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003esetup\u003c/span\u003e() {\n}\n\n\u003cspan class=\"pl-k\"\u003evoid\u003c/span\u003e \u003cspan class=\"pl-en\"\u003eloop\u003c/span\u003e() {\n sequence.\u003cspan class=\"pl-c1\"\u003eUpdate\u003c/span\u003e();\n}\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eBecause the size of the array is known at compile time in this example, it is\nnot necessary to pass the array size to the constructor. A second constructor\nis available in case the \u003ccode\u003eJLed\u003c/code\u003e array is created dynamically at runtime:\n\u003ccode\u003eJLed(eMode mode, JLed* leds, size_t n)\u003c/code\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ccode\u003eJLedSequence\u003c/code\u003e provides the following methods:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eUpdate()\u003c/code\u003e - updates the active \u003ccode\u003eJLed\u003c/code\u003e objects controlled by the sequence.\nLike the \u003ccode\u003eJLed::Update()\u003c/code\u003e method, it returns \u003ccode\u003etrue\u003c/code\u003e if an effect is running,\nelse \u003ccode\u003efalse\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eUse the \u003ccode\u003eRepeat(n)\u003c/code\u003e method to specify the number of repetitions. The default\nvalue is 1 repetition. The \u003ccode\u003eForever()\u003c/code\u003e methods sets to repeat the sequence\nforever.\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eStop()\u003c/code\u003e - turns off all \u003ccode\u003eJLed\u003c/code\u003e objects controlled by the sequence and\nstops the sequence. Further calls to \u003ccode\u003eUpdate()\u003c/code\u003e will have no effect.\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eReset()\u003c/code\u003e - Resets all \u003ccode\u003eJLed\u003c/code\u003e objects controlled by the sequence and\nthe sequence, resulting in a start-over.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFramework notes\u003c/h2\u003e\u003ca id=\"user-content-framework-notes\" class=\"anchor\" aria-label=\"Permalink: Framework notes\" href=\"#framework-notes\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eJLed supports the Arduino and \u003ca href=\"https://www.mbed.org\" rel=\"nofollow\"\u003embed\u003c/a\u003e frameworks. When\nusing platformio, the framework to be used is configured in the \u003ccode\u003eplatform.ini\u003c/code\u003e\nfile, as shown in the following example, which for example selects the \u003ccode\u003embed\u003c/code\u003e\nframework:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-ini notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"[env:nucleo_f401re_mbed]\nplatform=ststm32\nboard = nucleo_f401re\nframework = mbed\nbuild_flags = -Isrc\nsrc_filter = +\u0026lt;../../src/\u0026gt; +\u0026lt;./\u0026gt;\nupload_protocol=stlink\"\u003e\u003cpre\u003e\u003cspan class=\"pl-en\"\u003e[env:nucleo_f401re_mbed]\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003eplatform\u003c/span\u003e=ststm32\n\u003cspan class=\"pl-k\"\u003eboard\u003c/span\u003e = nucleo_f401re\n\u003cspan class=\"pl-k\"\u003eframework\u003c/span\u003e = mbed\n\u003cspan class=\"pl-k\"\u003ebuild_flags\u003c/span\u003e = -Isrc\n\u003cspan class=\"pl-k\"\u003esrc_filter\u003c/span\u003e = +\u0026lt;../../src/\u0026gt; +\u0026lt;./\u0026gt;\n\u003cspan class=\"pl-k\"\u003eupload_protocol\u003c/span\u003e=stlink\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eAn \u003ca href=\"/jandelgado/jled/blob/master/examples/multiled_mbed/multiled_mbed.cpp\"\u003embed example is provided here\u003c/a\u003e.\nTo compile it for the F401RE, make your \u003ca href=\"/jandelgado/jled/blob/master/platform.ini\"\u003eplaform.ini\u003c/a\u003e look like:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-ini notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"...\n[platformio]\ndefault_envs = nucleo_f401re_mbed\nsrc_dir = examples/multiled_mbed\n...\"\u003e\u003cpre\u003e...\n\u003cspan class=\"pl-en\"\u003e[platformio]\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003edefault_envs\u003c/span\u003e = nucleo_f401re_mbed\n\u003cspan class=\"pl-k\"\u003esrc_dir\u003c/span\u003e = examples/multiled_mbed\n...\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003ePlatform notes\u003c/h2\u003e\u003ca id=\"user-content-platform-notes\" class=\"anchor\" aria-label=\"Permalink: Platform notes\" href=\"#platform-notes\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eESP8266\u003c/h3\u003e\u003ca id=\"user-content-esp8266\" class=\"anchor\" aria-label=\"Permalink: ESP8266\" href=\"#esp8266\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe DAC of the ESP8266 operates with 10 bits, every value JLed writes out gets\nautomatically scaled to 10 bits, since JLed internally only uses 8 bits. The\nscaling methods make sure that min/max relationships are preserved, i.e., 0 is\nmapped to 0 and 255 is mapped to 1023. When using a user-defined brightness\nfunction on the ESP8266, 8-bit values must be returned, all scaling is done by\nJLed transparently for the application, yielding platform-independent code.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eESP32\u003c/h3\u003e\u003ca id=\"user-content-esp32\" class=\"anchor\" aria-label=\"Permalink: ESP32\" href=\"#esp32\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eWhen compiling for the ESP32, JLed uses \u003ccode\u003eledc\u003c/code\u003e functions provided by the ESP32\nESP-IDF SDK. (See \u003ca href=\"https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/ledc.html\" rel=\"nofollow\"\u003eesspressif\ndocumentation\u003c/a\u003e\nfor details).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ccode\u003eledc\u003c/code\u003e API connects so-called channels to GPIO pins, enabling them to use\nPWM. There are 16 channels available. Unless otherwise specified, JLed\nautomatically picks the next free channel, starting with channel 0 and wrapping\nover after channel 15. To manually specify a channel, the JLed object must be\nconstructed this way:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-c++ notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"auto esp32Led = JLed(jled::Esp32Hal(2, 7)).Blink(1000, 1000).Forever();\"\u003e\u003cpre\u003e\u003cspan class=\"pl-k\"\u003eauto\u003c/span\u003e esp32Led = JLed(jled::Esp32Hal(\u003cspan class=\"pl-c1\"\u003e2\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e7\u003c/span\u003e)).Blink(\u003cspan class=\"pl-c1\"\u003e1000\u003c/span\u003e, \u003cspan class=\"pl-c1\"\u003e1000\u003c/span\u003e).Forever();\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ccode\u003ejled::Esp32Hal(pin, chan)\u003c/code\u003e constructor takes the pin number as the first\nargument and the ESP32 ledc channel number on the second position. Note that\nusing the above-mentioned constructor results in non-platform independent code,\nso it should be avoided and is normally not necessary.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eFor completeness, the full signature of the Esp32Hal constructor is\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"Esp32Hal(PinType pin,\n int chan = kAutoSelectChan,\n uint16_t freq = 5000,\n ledc_timer_t timer = LEDC_TIMER_0)\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003eEsp32Hal(PinType pin,\n int chan = kAutoSelectChan,\n uint16_t freq = 5000,\n ledc_timer_t timer = LEDC_TIMER_0)\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003ewhich also allows to override the default frequency and timer used, when needed.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eUsing ESP-IDF\u003c/h4\u003e\u003ca id=\"user-content-using-esp-idf\" class=\"anchor\" aria-label=\"Permalink: Using ESP-IDF\" href=\"#using-esp-idf\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSince JLed uses the ESP-IDF SDK, JLed can also be directly used in ESP-IDF\nprojects, without the need of using the Arduino Framework (which is also\npossible). See these repositories for example projects:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/jandelgado/jled-esp-idf-example\"\u003ehttps://github.com/jandelgado/jled-esp-idf-example\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/jandelgado/jled-esp-idf-platformio-example\"\u003ehttps://github.com/jandelgado/jled-esp-idf-platformio-example\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSTM32\u003c/h3\u003e\u003ca id=\"user-content-stm32\" class=\"anchor\" aria-label=\"Permalink: STM32\" href=\"#stm32\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eArduino framework\u003c/h4\u003e\u003ca id=\"user-content-arduino-framework\" class=\"anchor\" aria-label=\"Permalink: Arduino framework\" href=\"#arduino-framework\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eI had success running JLed on a \u003ca href=\"https://www.st.com/en/evaluation-tools/nucleo-f401re.html\" rel=\"nofollow\"\u003eSTM32 Nucleo64 F401RE\nboard\u003c/a\u003e using this\n\u003ca href=\"https://github.com/rogerclarkmelbourne/Arduino_STM32/tree/master/STM32F4\"\u003eSTM32 Arduino\ncore\u003c/a\u003e\nand compiling examples from the Arduino IDE. Note that the \u003ccode\u003estlink\u003c/code\u003e is\nnecessary to upload sketches to the microcontroller.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eRaspberry Pi Pico\u003c/h3\u003e\u003ca id=\"user-content-raspberry-pi-pico\" class=\"anchor\" aria-label=\"Permalink: Raspberry Pi Pico\" href=\"#raspberry-pi-pico\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eWhen using JLed on a Raspberry Pi Pico, the Pico-SDK and tools can be\nused. The Pico supports up to 16 PWM channels in parallel. See\nthe \u003ca href=\"/jandelgado/jled/blob/master/examples/raspi_pico\"\u003epico-demo\u003c/a\u003e for an example and build instructions when\nthe Pico-SDK is used.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eA probably easier approach is to use the Arduino platform. See\n\u003ca href=\"/jandelgado/jled/blob/master/platformio.ini\"\u003eplatformio.ini\u003c/a\u003e for details (look for\n\u003ccode\u003eenv:raspberrypi_pico_w\u003c/code\u003e, which targets the Raspberry Pi Pico W.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExample sketches\u003c/h2\u003e\u003ca id=\"user-content-example-sketches\" class=\"anchor\" aria-label=\"Permalink: Example sketches\" href=\"#example-sketches\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eExample sketches are provided in the \u003ca href=\"/jandelgado/jled/blob/master/examples\"\u003eexamples\u003c/a\u003e directory.\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/hello\"\u003eHello, world\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/simple_on\"\u003eTurn LED on after a delay\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/breathe\"\u003eBreathe effect\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/candle\"\u003eCandle effect\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/fade_on\"\u003eFade LED on\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/fade_off\"\u003eFade LED off\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/fade_from_to\"\u003eFade from-to effect\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/pulse\"\u003ePulse effect\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/multiled\"\u003eControlling multiple LEDs in parallel\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/multiled_mbed\"\u003eControlling multiple LEDs in parallel (mbed)\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/sequence\"\u003eControlling multiple LEDs sequentially\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/user_func\"\u003eSimple User provided effect\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/morse\"\u003eMorsecode example\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/last_brightness\"\u003eLast brightness value example\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/custom_hal\"\u003eCustom HAL example\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/jandelgado/jled-pca9685-hal\"\u003eCustom PCA9685 HAL\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/jandelgado/jled-example-switch-sequence\"\u003eDynamically switch sequences\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://jandelgado.github.io/jled-wasm\" rel=\"nofollow\"\u003eJLed compiled to WASM and running in the browser\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/jandelgado/jled/blob/master/examples/raspi_pico\"\u003eRaspberry Pi Pico Demo\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/jandelgado/jled-esp-idf-example\"\u003eESP32 ESP-IDF example\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://github.com/jandelgado/jled-esp-idf-platformio-example\"\u003eESP32 ESP-IDF PlatformIO example\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eBuilding examples with PlatformIO\u003c/h3\u003e\u003ca id=\"user-content-building-examples-with-platformio\" class=\"anchor\" aria-label=\"Permalink: Building examples with PlatformIO\" href=\"#building-examples-with-platformio\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTo build an example using \u003ca href=\"http://platformio.org/\" rel=\"nofollow\"\u003ethe PlatformIO ide\u003c/a\u003e,\nuncomment the example to be built in the \u003ca href=\"/jandelgado/jled/blob/master/platformio.ini\"\u003eplatformio.ini\u003c/a\u003e\nproject file, e.g.:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-ini notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"[platformio]\n; uncomment example to build\nsrc_dir = examples/hello\n;src_dir = examples/breathe\"\u003e\u003cpre\u003e\u003cspan class=\"pl-en\"\u003e[platformio]\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e;\u003c/span\u003e uncomment example to build\u003c/span\u003e\n\u003cspan class=\"pl-k\"\u003esrc_dir\u003c/span\u003e = examples/hello\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e;\u003c/span\u003esrc_dir = examples/breathe\u003c/span\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eBuilding examples with the Arduino IDE\u003c/h3\u003e\u003ca id=\"user-content-building-examples-with-the-arduino-ide\" class=\"anchor\" aria-label=\"Permalink: Building examples with the Arduino IDE\" href=\"#building-examples-with-the-arduino-ide\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTo build an example sketch in the Arduino IDE, select an example from\nthe \u003ccode\u003eFile\u003c/code\u003e \u0026gt; \u003ccode\u003eExamples\u003c/code\u003e \u0026gt; \u003ccode\u003eJLed\u003c/code\u003e menu.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eExtending\u003c/h2\u003e\u003ca id=\"user-content-extending\" class=\"anchor\" aria-label=\"Permalink: Extending\" href=\"#extending\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSupport new hardware\u003c/h3\u003e\u003ca id=\"user-content-support-new-hardware\" class=\"anchor\" aria-label=\"Permalink: Support new hardware\" href=\"#support-new-hardware\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eJLed uses a very thin hardware abstraction layer (hal) to abstract access to\nthe actual MCU/framework used (e.g. ESP32, ESP8266). The hal object encapsulate\naccess to the GPIO and time functionality of the MCU under the framework being\nused. During the unit test, mocked hal instances are used, enabling tests to\ncheck the generated output. The \u003ca href=\"/jandelgado/jled/blob/master/examples/custom_hal\"\u003eCustom HAL project\u003c/a\u003e\nprovides an example for a user define HAL.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eUnit tests\u003c/h2\u003e\u003ca id=\"user-content-unit-tests\" class=\"anchor\" aria-label=\"Permalink: Unit tests\" href=\"#unit-tests\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eJLed comes with an exhaustive host-based unit test suite. Info on how to run\nthe host-based provided unit tests \u003ca href=\"/jandelgado/jled/blob/master/test/README.md\"\u003eis provided here\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eContributing\u003c/h2\u003e\u003ca id=\"user-content-contributing\" class=\"anchor\" aria-label=\"Permalink: Contributing\" href=\"#contributing\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003efork this repository\u003c/li\u003e\n\u003cli\u003ecreate your feature branch\u003c/li\u003e\n\u003cli\u003eadd code\u003c/li\u003e\n\u003cli\u003eadd \u003ca href=\"/jandelgado/jled/blob/master/test\"\u003eunit test(s)\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003eadd \u003ca href=\"/jandelgado/jled/blob/master/README.md\"\u003edocumentation\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003emake sure the cpp \u003ca href=\"https://github.com/cpplint/cpplint\"\u003elinter\u003c/a\u003e does not\nreport any problems (run \u003ccode\u003emake lint\u003c/code\u003e). Hint: use \u003ccode\u003eclang-format\u003c/code\u003e with the\nprovided \u003ca href=\"/jandelgado/jled/blob/master/.clang-format\"\u003esettings\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003ecommit changes\u003c/li\u003e\n\u003cli\u003esubmit a PR\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFAQ\u003c/h2\u003e\u003ca id=\"user-content-faq\" class=\"anchor\" aria-label=\"Permalink: FAQ\" href=\"#faq\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eHow do I check if a JLed object is still being updated?\u003c/h3\u003e\u003ca id=\"user-content-how-do-i-check-if-a-jled-object-is-still-being-updated\" class=\"anchor\" aria-label=\"Permalink: How do I check if a JLed object is still being updated?\" href=\"#how-do-i-check-if-a-jled-object-is-still-being-updated\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eCheck the return value of the \u003ccode\u003eJLed::Update\u003c/code\u003e method: the method returns \u003ccode\u003etrue\u003c/code\u003e if\nthe effect is still running, otherwise \u003ccode\u003efalse\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eThe \u003ccode\u003eJLed::IsRunning\u003c/code\u003e method returns \u003ccode\u003etrue\u003c/code\u003e if an effect is running, else \u003ccode\u003efalse\u003c/code\u003e.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eHow do I restart an effect?\u003c/h3\u003e\u003ca id=\"user-content-how-do-i-restart-an-effect\" class=\"anchor\" aria-label=\"Permalink: How do I restart an effect?\" href=\"#how-do-i-restart-an-effect\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eCall \u003ccode\u003eReset()\u003c/code\u003e on a \u003ccode\u003eJLed\u003c/code\u003e object to start over.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eHow do I change a running effect?\u003c/h3\u003e\u003ca id=\"user-content-how-do-i-change-a-running-effect\" class=\"anchor\" aria-label=\"Permalink: How do I change a running effect?\" href=\"#how-do-i-change-a-running-effect\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eJust 'reconfigure' the \u003ccode\u003eJLed\u003c/code\u003e with any of the effect methods (e.g. \u003ccode\u003eFadeOn\u003c/code\u003e,\n\u003ccode\u003eBreathe\u003c/code\u003e, \u003ccode\u003eBlink\u003c/code\u003e etc). Time-wise, the effect will start over.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eAuthor and Copyright\u003c/h2\u003e\u003ca id=\"user-content-author-and-copyright\" class=\"anchor\" aria-label=\"Permalink: Author and Copyright\" href=\"#author-and-copyright\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eCopyright 2017-2022 by Jan Delgado, jdelgado[at]gmx.net.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLicense\u003c/h2\u003e\u003ca id=\"user-content-license\" class=\"anchor\" aria-label=\"Permalink: License\" href=\"#license\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"/jandelgado/jled/blob/master/LICENSE\"\u003eMIT\u003c/a\u003e\u003c/p\u003e\n\u003c/article\u003e","loaded":true,"timedOut":false,"errorMessage":null,"headerInfo":{"toc":[{"level":1,"text":"JLed - Advanced LED Library","anchor":"jled---advanced-led-library","htmlText":"JLed - Advanced LED Library"},{"level":2,"text":"Example","anchor":"example","htmlText":"Example"},{"level":2,"text":"Contents","anchor":"contents","htmlText":"Contents"},{"level":2,"text":"Features","anchor":"features","htmlText":"Features"},{"level":2,"text":"Cheat Sheet","anchor":"cheat-sheet","htmlText":"Cheat Sheet"},{"level":2,"text":"Installation","anchor":"installation","htmlText":"Installation"},{"level":3,"text":"Arduino IDE","anchor":"arduino-ide","htmlText":"Arduino IDE"},{"level":3,"text":"PlatformIO","anchor":"platformio","htmlText":"PlatformIO"},{"level":2,"text":"Usage","anchor":"usage","htmlText":"Usage"},{"level":4,"text":"Output pipeline","anchor":"output-pipeline","htmlText":"Output pipeline"},{"level":3,"text":"Effects","anchor":"effects","htmlText":"Effects"},{"level":4,"text":"Static on and off","anchor":"static-on-and-off","htmlText":"Static on and off"},{"level":5,"text":"Static on example","anchor":"static-on-example","htmlText":"Static on example"},{"level":4,"text":"Blinking","anchor":"blinking","htmlText":"Blinking"},{"level":5,"text":"Blinking example","anchor":"blinking-example","htmlText":"Blinking example"},{"level":4,"text":"Breathing","anchor":"breathing","htmlText":"Breathing"},{"level":5,"text":"Breathing example","anchor":"breathing-example","htmlText":"Breathing example"},{"level":4,"text":"Candle","anchor":"candle","htmlText":"Candle"},{"level":5,"text":"Candle example","anchor":"candle-example","htmlText":"Candle example"},{"level":4,"text":"FadeOn","anchor":"fadeon","htmlText":"FadeOn"},{"level":5,"text":"FadeOn example","anchor":"fadeon-example","htmlText":"FadeOn example"},{"level":4,"text":"FadeOff","anchor":"fadeoff","htmlText":"FadeOff"},{"level":4,"text":"Fade","anchor":"fade","htmlText":"Fade"},{"level":5,"text":"Fade example","anchor":"fade-example","htmlText":"Fade example"},{"level":4,"text":"User provided brightness function","anchor":"user-provided-brightness-function","htmlText":"User provided brightness function"},{"level":5,"text":"User provided brightness function example","anchor":"user-provided-brightness-function-example","htmlText":"User provided brightness function example"},{"level":4,"text":"Delays and repetitions","anchor":"delays-and-repetitions","htmlText":"Delays and repetitions"},{"level":5,"text":"Initial delay before effect starts","anchor":"initial-delay-before-effect-starts","htmlText":"Initial delay before effect starts"},{"level":5,"text":"Delay after effect finished","anchor":"delay-after-effect-finished","htmlText":"Delay after effect finished"},{"level":5,"text":"Repetitions","anchor":"repetitions","htmlText":"Repetitions"},{"level":4,"text":"State functions","anchor":"state-functions","htmlText":"State functions"},{"level":5,"text":"Update","anchor":"update","htmlText":"Update"},{"level":5,"text":"IsRunning","anchor":"isrunning","htmlText":"IsRunning"},{"level":5,"text":"Reset","anchor":"reset","htmlText":"Reset"},{"level":5,"text":"Immediate Stop","anchor":"immediate-stop","htmlText":"Immediate Stop"},{"level":4,"text":"Misc functions","anchor":"misc-functions","htmlText":"Misc functions"},{"level":5,"text":"Low active for inverted output","anchor":"low-active-for-inverted-output","htmlText":"Low active for inverted output"},{"level":5,"text":"Minimum- and Maximum brightness level","anchor":"minimum--and-maximum-brightness-level","htmlText":"Minimum- and Maximum brightness level"},{"level":3,"text":"Controlling a group of LEDs","anchor":"controlling-a-group-of-leds","htmlText":"Controlling a group of LEDs"},{"level":2,"text":"Framework notes","anchor":"framework-notes","htmlText":"Framework notes"},{"level":2,"text":"Platform notes","anchor":"platform-notes","htmlText":"Platform notes"},{"level":3,"text":"ESP8266","anchor":"esp8266","htmlText":"ESP8266"},{"level":3,"text":"ESP32","anchor":"esp32","htmlText":"ESP32"},{"level":4,"text":"Using ESP-IDF","anchor":"using-esp-idf","htmlText":"Using ESP-IDF"},{"level":3,"text":"STM32","anchor":"stm32","htmlText":"STM32"},{"level":4,"text":"Arduino framework","anchor":"arduino-framework","htmlText":"Arduino framework"},{"level":3,"text":"Raspberry Pi Pico","anchor":"raspberry-pi-pico","htmlText":"Raspberry Pi Pico"},{"level":2,"text":"Example sketches","anchor":"example-sketches","htmlText":"Example sketches"},{"level":3,"text":"Building examples with PlatformIO","anchor":"building-examples-with-platformio","htmlText":"Building examples with PlatformIO"},{"level":3,"text":"Building examples with the Arduino IDE","anchor":"building-examples-with-the-arduino-ide","htmlText":"Building examples with the Arduino IDE"},{"level":2,"text":"Extending","anchor":"extending","htmlText":"Extending"},{"level":3,"text":"Support new hardware","anchor":"support-new-hardware","htmlText":"Support new hardware"},{"level":2,"text":"Unit tests","anchor":"unit-tests","htmlText":"Unit tests"},{"level":2,"text":"Contributing","anchor":"contributing","htmlText":"Contributing"},{"level":2,"text":"FAQ","anchor":"faq","htmlText":"FAQ"},{"level":3,"text":"How do I check if a JLed object is still being updated?","anchor":"how-do-i-check-if-a-jled-object-is-still-being-updated","htmlText":"How do I check if a JLed object is still being updated?"},{"level":3,"text":"How do I restart an effect?","anchor":"how-do-i-restart-an-effect","htmlText":"How do I restart an effect?"},{"level":3,"text":"How do I change a running effect?","anchor":"how-do-i-change-a-running-effect","htmlText":"How do I change a running effect?"},{"level":2,"text":"Author and Copyright","anchor":"author-and-copyright","htmlText":"Author and Copyright"},{"level":2,"text":"License","anchor":"license","htmlText":"License"}],"siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Fjandelgado%2Fjled"}},{"displayName":"LICENSE","repoName":"jled","refName":"master","path":"LICENSE","preferredFileType":"license","tabName":"MIT","richText":null,"loaded":false,"timedOut":false,"errorMessage":null,"headerInfo":{"toc":null,"siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Fjandelgado%2Fjled"}}],"overviewFilesProcessingTime":0}},"appPayload":{"helpUrl":"https://docs.github.com","findFileWorkerPath":"/assets-cdn/worker/find-file-worker-7d7eb7c71814.js","findInFileWorkerPath":"/assets-cdn/worker/find-in-file-worker-708ec8ade250.js","githubDevUrl":null,"enabled_features":{"copilot_workspace":null,"code_nav_ui_events":false,"overview_shared_code_dropdown_button":true,"react_blob_overlay":false,"accessible_code_button":true,"github_models_repo_integration":false}}}}</script> <div 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data-hotkey="k"></button><h2 class="sr-only ScreenReaderHeading-module__userSelectNone--vW4Cq prc-Heading-Heading-6CmGO" data-testid="screen-reader-heading" id="folders-and-files">Folders and files</h2><table aria-labelledby="folders-and-files" class="Box-sc-g0xbh4-0 fdROMU"><thead class="Box-sc-g0xbh4-0 jGKpsv"><tr class="Box-sc-g0xbh4-0 jdgHnn"><th colSpan="2" class="Box-sc-g0xbh4-0 bQivRW"><span class="text-bold">Name</span></th><th colSpan="1" class="Box-sc-g0xbh4-0 ldkMIO"><span class="text-bold">Name</span></th><th class="hide-sm"><div title="Last commit message" class="Truncate__StyledTruncate-sc-23o1d2-0 liVpTx width-fit"><span class="text-bold">Last commit message</span></div></th><th colSpan="1" class="Box-sc-g0xbh4-0 jMbWeI"><div title="Last commit date" class="Truncate__StyledTruncate-sc-23o1d2-0 liVpTx width-fit"><span class="text-bold">Last commit date</span></div></th></tr></thead><tbody><tr class="Box-sc-g0xbh4-0 gpqjiB"><td colSpan="3" class="bgColor-muted p-1 rounded-top-2"><div class="Box-sc-g0xbh4-0 dzCJzi"><h2 class="sr-only ScreenReaderHeading-module__userSelectNone--vW4Cq prc-Heading-Heading-6CmGO" data-testid="screen-reader-heading">Latest commit</h2><div style="width:120px" class="Skeleton Skeleton--text" data-testid="loading"> </div><div class="d-flex flex-shrink-0 gap-2"><div data-testid="latest-commit-details" class="d-none d-sm-flex flex-items-center"></div><div class="d-flex gap-2"><h2 class="sr-only ScreenReaderHeading-module__userSelectNone--vW4Cq prc-Heading-Heading-6CmGO" data-testid="screen-reader-heading">History</h2><a href="/jandelgado/jled/commits/master/" class="prc-Button-ButtonBase-c50BI d-none d-lg-flex LinkButton-module__code-view-link-button--xvCGA flex-items-center fgColor-default" data-loading="false" data-size="small" data-variant="invisible" aria-describedby=":Raqj8pab:-loading-announcement"><span data-component="buttonContent" data-align="center" class="prc-Button-ButtonContent-HKbr-"><span data-component="leadingVisual" class="prc-Button-Visual-2epfX prc-Button-VisualWrap-Db-eB"><svg aria-hidden="true" focusable="false" class="octicon octicon-history" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="m.427 1.927 1.215 1.215a8.002 8.002 0 1 1-1.6 5.685.75.75 0 1 1 1.493-.154 6.5 6.5 0 1 0 1.18-4.458l1.358 1.358A.25.25 0 0 1 3.896 6H.25A.25.25 0 0 1 0 5.75V2.104a.25.25 0 0 1 .427-.177ZM7.75 4a.75.75 0 0 1 .75.75v2.992l2.028.812a.75.75 0 0 1-.557 1.392l-2.5-1A.751.751 0 0 1 7 8.25v-3.5A.75.75 0 0 1 7.75 4Z"></path></svg></span><span data-component="text" class="prc-Button-Label-pTQ3x"><span class="fgColor-default">110 Commits</span></span></span></a><div class="d-sm-none"></div><div class="d-flex d-lg-none"><span role="tooltip" aria-label="110 Commits" id="history-icon-button-tooltip" class="Tooltip__TooltipBase-sc-17tf59c-0 hWlpPn tooltipped-n"><a 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style="vertical-align:text-bottom"><path d="M5.75 2.5h8.5a.75.75 0 0 1 0 1.5h-8.5a.75.75 0 0 1 0-1.5Zm0 5h8.5a.75.75 0 0 1 0 1.5h-8.5a.75.75 0 0 1 0-1.5Zm0 5h8.5a.75.75 0 0 1 0 1.5h-8.5a.75.75 0 0 1 0-1.5ZM2 14a1 1 0 1 1 0-2 1 1 0 0 1 0 2Zm1-6a1 1 0 1 1-2 0 1 1 0 0 1 2 0ZM2 4a1 1 0 1 1 0-2 1 1 0 0 1 0 2Z"></path></svg></button></div><div class="Box-sc-g0xbh4-0 QkQOb js-snippet-clipboard-copy-unpositioned undefined" data-hpc="true"><article class="markdown-body entry-content container-lg" itemprop="text"><markdown-accessiblity-table><table><tbody><tr><td> <b>Preferring Python?</b> I just released <a href="https://github.com/jandelgado/jled-circuitpython">jled-circuitpython</a>, a JLed implementation for CircuitPython and MicroPython. </td></tr></tbody></table></markdown-accessiblity-table> <div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">JLed - Advanced LED Library</h1><a id="user-content-jled---advanced-led-library" class="anchor" aria-label="Permalink: JLed - Advanced LED Library" href="#jled---advanced-led-library"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><a target="_blank" rel="noopener noreferrer" href="https://github.com/jandelgado/jled/workflows/run%20tests/badge.svg"><img src="https://github.com/jandelgado/jled/workflows/run%20tests/badge.svg" alt="run tests" style="max-width: 100%;"></a> <a href="https://coveralls.io/github/jandelgado/jled?branch=master" rel="nofollow"><img src="https://camo.githubusercontent.com/5d6523e33355630ad66d77f50eb08bd17a622949aaf2cd62d2d72ac6209b45d7/68747470733a2f2f636f766572616c6c732e696f2f7265706f732f6769746875622f6a616e64656c6761646f2f6a6c65642f62616467652e7376673f6272616e63683d6d61737465722664756d6d793d31" alt="Coverage Status" data-canonical-src="https://coveralls.io/repos/github/jandelgado/jled/badge.svg?branch=master&dummy=1" style="max-width: 100%;"></a></p> <p dir="auto">An embedded C++ library to control LEDs. It uses a <strong>non-blocking</strong> approach and can control LEDs in simple (<strong>on</strong>/<strong>off</strong>) and complex (<strong>blinking</strong>, <strong>breathing</strong> and more) ways in a <strong>time-driven</strong> manner.</p> <p dir="auto">JLed got some <a href="https://hackaday.com/2018/06/13/simplifying-basic-led-effects/" rel="nofollow">coverage on Hackaday</a> and someone did a <a href="https://youtu.be/x5V2vdpZq1w" rel="nofollow">video tutorial for JLed</a> - Thanks!</p> <markdown-accessiblity-table><table> <tbody><tr> <th>JLed in action</th> <th>Interactive JLed playground</th> </tr> <tr> <td><a href="/jandelgado/jled/blob/master/examples/multiled"><img alt="JLed in action" src="/jandelgado/jled/raw/master/doc/jled.gif" width="256" data-animated-image="" style="max-width: 100%;"></a></td> <td><a href="https://jandelgado.github.io/jled-wasm" rel="nofollow"><img alt="jled running in the browser" src="/jandelgado/jled/raw/master/doc/jled-wasm.png" width="256" style="max-width: 100%;"></a> </td> </tr> </tbody></table></markdown-accessiblity-table> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Example</h2><a id="user-content-example" class="anchor" aria-label="Permalink: Example" href="#example"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-c++ notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="// breathe LED (on gpio 9) 6 times for 1500ms, waiting for 500ms after each run #include <jled.h> auto led_breathe = JLed(9).Breathe(1500).Repeat(6).DelayAfter(500); void setup() { } void loop() { led_breathe.Update(); }"><pre><span class="pl-c"><span class="pl-c">//</span> breathe LED (on gpio 9) 6 times for 1500ms, waiting for 500ms after each run</span> #<span class="pl-k">include</span> <span class="pl-s"><span class="pl-pds"><</span>jled.h<span class="pl-pds">></span></span> <span class="pl-k">auto</span> led_breathe = JLed(<span class="pl-c1">9</span>).Breathe(<span class="pl-c1">1500</span>).Repeat(<span class="pl-c1">6</span>).DelayAfter(<span class="pl-c1">500</span>); <span class="pl-k">void</span> <span class="pl-en">setup</span>() { } <span class="pl-k">void</span> <span class="pl-en">loop</span>() { led_breathe.<span class="pl-c1">Update</span>(); }</pre></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Contents</h2><a id="user-content-contents" class="anchor" aria-label="Permalink: Contents" href="#contents"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="#features">Features</a></li> <li><a href="#cheat-sheet">Cheat Sheet</a></li> <li><a href="#installation">Installation</a> <ul dir="auto"> <li><a href="#arduino-ide">Arduino IDE</a></li> <li><a href="#platformio">PlatformIO</a></li> </ul> </li> <li><a href="#usage">Usage</a> * <a href="#output-pipeline">Output pipeline</a> <ul dir="auto"> <li><a href="#effects">Effects</a> <ul dir="auto"> <li><a href="#static-on-and-off">Static on and off</a> <ul dir="auto"> <li><a href="#static-on-example">Static on example</a></li> </ul> </li> <li><a href="#blinking">Blinking</a> <ul dir="auto"> <li><a href="#blinking-example">Blinking example</a></li> </ul> </li> <li><a href="#breathing">Breathing</a> <ul dir="auto"> <li><a href="#breathing-example">Breathing example</a></li> </ul> </li> <li><a href="#candle">Candle</a> <ul dir="auto"> <li><a href="#candle-example">Candle example</a></li> </ul> </li> <li><a href="#fadeon">FadeOn</a> <ul dir="auto"> <li><a href="#fadeon-example">FadeOn example</a></li> </ul> </li> <li><a href="#fadeoff">FadeOff</a></li> <li><a href="#fade">Fade</a> <ul dir="auto"> <li><a href="#fade-example">Fade example</a></li> </ul> </li> <li><a href="#user-provided-brightness-function">User provided brightness function</a> <ul dir="auto"> <li><a href="#user-provided-brightness-function-example">User provided brightness function example</a></li> </ul> </li> <li><a href="#delays-and-repetitions">Delays and repetitions</a> <ul dir="auto"> <li><a href="#initial-delay-before-effect-starts">Initial delay before effect starts</a></li> <li><a href="#delay-after-effect-finished">Delay after effect finished</a></li> <li><a href="#repetitions">Repetitions</a></li> </ul> </li> <li><a href="#state-functions">State functions</a> <ul dir="auto"> <li><a href="#update">Update</a></li> <li><a href="#isrunning">IsRunning</a></li> <li><a href="#reset">Reset</a></li> <li><a href="#immediate-stop">Immediate Stop</a></li> </ul> </li> <li><a href="#misc-functions">Misc functions</a> <ul dir="auto"> <li><a href="#low-active-for-inverted-output">Low active for inverted output</a></li> <li><a href="#minimum--and-maximum-brightness-level">Minimum- and Maximum brightness level</a></li> </ul> </li> </ul> </li> <li><a href="#controlling-a-group-of-leds">Controlling a group of LEDs</a></li> </ul> </li> <li><a href="#framework-notes">Framework notes</a></li> <li><a href="#platform-notes">Platform notes</a> <ul dir="auto"> <li><a href="#esp8266">ESP8266</a></li> <li><a href="#esp32">ESP32</a> <ul dir="auto"> <li><a href="#using-esp-idf">Using ESP-IDF</a></li> </ul> </li> <li><a href="#stm32">STM32</a> <ul dir="auto"> <li><a href="#arduino-framework">Arduino framework</a></li> </ul> </li> <li><a href="#raspberry-pi-pico">Raspberry Pi Pico</a></li> </ul> </li> <li><a href="#example-sketches">Example sketches</a> <ul dir="auto"> <li><a href="#building-examples-with-platformio">Building examples with PlatformIO</a></li> <li><a href="#building-examples-with-the-arduino-ide">Building examples with the Arduino IDE</a></li> </ul> </li> <li><a href="#extending">Extending</a> <ul dir="auto"> <li><a href="#support-new-hardware">Support new hardware</a></li> </ul> </li> <li><a href="#unit-tests">Unit tests</a></li> <li><a href="#contributing">Contributing</a></li> <li><a href="#faq">FAQ</a> <ul dir="auto"> <li><a href="#how-do-i-check-if-a-jled-object-is-still-being-updated">How do I check if a JLed object is still being updated?</a></li> <li><a href="#how-do-i-restart-an-effect">How do I restart an effect?</a></li> <li><a href="#how-do-i-change-a-running-effect">How do I change a running effect?</a></li> </ul> </li> <li><a href="#author-and-copyright">Author and Copyright</a></li> <li><a href="#license">License</a></li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Features</h2><a id="user-content-features" class="anchor" aria-label="Permalink: Features" href="#features"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>non-blocking</li> <li>effects: simple on/off, breathe, blink, candle, fade-on, fade-off, <a href="/jandelgado/jled/blob/master/examples/morse">user-defined</a> (e.g. morse)</li> <li>supports inverted polarity of LED</li> <li>easy configuration using fluent interface</li> <li>can control groups of LEDs sequentially or in parallel</li> <li>Portable: Arduino, ESP8266, ESP32, Mbed, Raspberry Pi Pico and more platforms compatible, runs even in the <a href="https://jandelgado.github.io/jled-wasm" rel="nofollow">browser</a></li> <li>supports Arduino, <a href="https://www.mbed.com" rel="nofollow">mbed</a>, <a href="https://github.com/raspberrypi/pico-sdk">Raspberry Pi Pico</a> and ESP32 <a href="https://www.espressif.com/en/products/sdks/esp-idf" rel="nofollow">ESP-IDF</a> SDK's</li> <li>well <a href="https://coveralls.io/github/jandelgado/jled" rel="nofollow">tested</a></li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Cheat Sheet</h2><a id="user-content-cheat-sheet" class="anchor" aria-label="Permalink: Cheat Sheet" href="#cheat-sheet"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><a target="_blank" rel="noopener noreferrer" href="/jandelgado/jled/blob/master/doc/cheat_sheet.jpg"><img src="/jandelgado/jled/raw/master/doc/cheat_sheet.jpg" alt="JLed Cheat Sheet" style="max-width: 100%;"></a></p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Installation</h2><a id="user-content-installation" class="anchor" aria-label="Permalink: Installation" href="#installation"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Arduino IDE</h3><a id="user-content-arduino-ide" class="anchor" aria-label="Permalink: Arduino IDE" href="#arduino-ide"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">In the main menu of the Arduino IDE, select <code>Sketch</code> > <code>Include Library</code> > <code>Manage Libraries...</code> and search for <code>jled</code>, then press <code>install</code>.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">PlatformIO</h3><a id="user-content-platformio" class="anchor" aria-label="Permalink: PlatformIO" href="#platformio"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Add <code>jled</code> to your library dependencies in your <code>platformio.ini</code> project file, e.g.</p> <div class="highlight highlight-source-ini notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="... [env:nanoatmega328] platform = atmelavr board = nanoatmega328 framework = arduino lib_deps=jled ..."><pre>... <span class="pl-en">[env:nanoatmega328]</span> <span class="pl-k">platform</span> = atmelavr <span class="pl-k">board</span> = nanoatmega328 <span class="pl-k">framework</span> = arduino <span class="pl-k">lib_deps</span>=jled ...</pre></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Usage</h2><a id="user-content-usage" class="anchor" aria-label="Permalink: Usage" href="#usage"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">First, the LED object is constructed and configured, then the state is updated with subsequent calls to the <code>Update()</code> method, typically from the <code>loop()</code> function. While the effect is active, <code>Update</code> returns <code>true</code>, otherwise <code>false</code>.</p> <p dir="auto">The constructor takes the pin, to which the LED is connected to as the only argument. Further configuration of the LED object is done using a fluent interface, e.g. <code>JLed led = JLed(13).Breathe(2000).DelayAfter(1000).Repeat(5)</code>. See the examples section below for further details.</p> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">Output pipeline</h4><a id="user-content-output-pipeline" class="anchor" aria-label="Permalink: Output pipeline" href="#output-pipeline"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">First the configured effect (e.g. <code>Fade</code>) is evaluated for the current time <code>t</code>. JLed internally uses unsigned bytes to represent brightness values, ranging from 0 to 255. Next, the value is scaled to the limits set by <code>MinBrightness</code> and <code>MaxBrightness</code> (optionally). When the effect is configured for a low-active LED using <code>LowActive</code>, the brightness value will be inverted, i.e., the value will be subtracted from 255. Finally the value is passed to the hardware abstraction, which might scale it to the resolution used by the actual device (e.g. 10 bits for an ESP8266). Finally the brightness value is written out to the configure GPIO.</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="┌───────────┐ ┌────────────┐ ┌─────────┐ ┌────────┐ ┌─────────┐ ┌────────┐ │ Evaluate │ │ Scale to │ │ Low │YES │ Invert │ │Scale for│ │Write to│ │ effect(t) ├───►│ [min, max] ├───►│ active? ├───►│ signal ├───►│Hardware ├───►│ GPIO │ └───────────┘ └────────────┘ └────┬────┘ └────────┘ └───▲─────┘ └────────┘ │ NO │ └───────────────────────────┘"><pre lang="text" class="notranslate"><code>┌───────────┐ ┌────────────┐ ┌─────────┐ ┌────────┐ ┌─────────┐ ┌────────┐ │ Evaluate │ │ Scale to │ │ Low │YES │ Invert │ │Scale for│ │Write to│ │ effect(t) ├───►│ [min, max] ├───►│ active? ├───►│ signal ├───►│Hardware ├───►│ GPIO │ └───────────┘ └────────────┘ └────┬────┘ └────────┘ └───▲─────┘ └────────┘ │ NO │ └───────────────────────────┘ </code></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Effects</h3><a id="user-content-effects" class="anchor" aria-label="Permalink: Effects" href="#effects"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">Static on and off</h4><a id="user-content-static-on-and-off" class="anchor" aria-label="Permalink: Static on and off" href="#static-on-and-off"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Calling <code>On(uint16_t period=1)</code> turns the LED on. To immediately turn a LED on, make a call like <code>JLed(LED_BUILTIN).On().Update()</code>. The <code>period</code> is optional and defaults to 1ms.</p> <p dir="auto"><code>Off()</code> works like <code>On()</code>, except that it turns the LED off, i.e., it sets the brightness to 0.</p> <p dir="auto">Use the <code>Set(uint8_t brightness, uint16_t period=1)</code> method to set the brightness to the given value, i.e., <code>Set(255)</code> is equivalent to calling <code>On()</code> and <code>Set(0)</code> is equivalent to calling <code>Off()</code>.</p> <p dir="auto">Technically, <code>Set</code>, <code>On</code> and <code>Off</code> are effects with a default period of 1ms, that set the brightness to a constant value. Specifying a different period has an effect on when the <code>Update()</code> method will be done updating the effect and return false (like for any other effects). This is important when for example in a <code>JLedSequence</code> the LED should stay on for a given amount of time.</p> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">Static on example</h5><a id="user-content-static-on-example" class="anchor" aria-label="Permalink: Static on example" href="#static-on-example"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-c++ notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="#include <jled.h> // turn builtin LED on after 1 second. auto led = JLed(LED_BUILTIN).On().DelayBefore(1000); void setup() { } void loop() { led.Update(); }"><pre>#<span class="pl-k">include</span> <span class="pl-s"><span class="pl-pds"><</span>jled.h<span class="pl-pds">></span></span> <span class="pl-c"><span class="pl-c">//</span> turn builtin LED on after 1 second.</span> <span class="pl-k">auto</span> led = JLed(LED_BUILTIN).On().DelayBefore(<span class="pl-c1">1000</span>); <span class="pl-k">void</span> <span class="pl-en">setup</span>() { } <span class="pl-k">void</span> <span class="pl-en">loop</span>() { led.<span class="pl-c1">Update</span>(); }</pre></div> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">Blinking</h4><a id="user-content-blinking" class="anchor" aria-label="Permalink: Blinking" href="#blinking"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">In blinking mode, the LED cycles through a given number of on-off cycles, on- and off-cycle durations are specified independently. The <code>Blink()</code> method takes the duration for the on- and off cycle as arguments.</p> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">Blinking example</h5><a id="user-content-blinking-example" class="anchor" aria-label="Permalink: Blinking example" href="#blinking-example"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-c++ notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="#include <jled.h> // blink internal LED every second; 1 second on, 0.5 second off. auto led = JLed(LED_BUILTIN).Blink(1000, 500).Forever(); void setup() { } void loop() { led.Update(); }"><pre>#<span class="pl-k">include</span> <span class="pl-s"><span class="pl-pds"><</span>jled.h<span class="pl-pds">></span></span> <span class="pl-c"><span class="pl-c">//</span> blink internal LED every second; 1 second on, 0.5 second off.</span> <span class="pl-k">auto</span> led = JLed(LED_BUILTIN).Blink(<span class="pl-c1">1000</span>, <span class="pl-c1">500</span>).Forever(); <span class="pl-k">void</span> <span class="pl-en">setup</span>() { } <span class="pl-k">void</span> <span class="pl-en">loop</span>() { led.<span class="pl-c1">Update</span>(); }</pre></div> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">Breathing</h4><a id="user-content-breathing" class="anchor" aria-label="Permalink: Breathing" href="#breathing"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">In breathing mode, the LED smoothly changes the brightness using PWM. The <code>Breathe()</code> method takes the period of the effect as an argument.</p> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">Breathing example</h5><a id="user-content-breathing-example" class="anchor" aria-label="Permalink: Breathing example" href="#breathing-example"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-c++ notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="#include <jled.h> // connect LED to pin 13 (PWM capable). LED will breathe with period of // 2000ms and a delay of 1000ms after each period. auto led = JLed(13).Breathe(2000).DelayAfter(1000).Forever(); void setup() { } void loop() { led.Update(); }"><pre>#<span class="pl-k">include</span> <span class="pl-s"><span class="pl-pds"><</span>jled.h<span class="pl-pds">></span></span> <span class="pl-c"><span class="pl-c">//</span> connect LED to pin 13 (PWM capable). LED will breathe with period of</span> <span class="pl-c"><span class="pl-c">//</span> 2000ms and a delay of 1000ms after each period.</span> <span class="pl-k">auto</span> led = JLed(<span class="pl-c1">13</span>).Breathe(<span class="pl-c1">2000</span>).DelayAfter(<span class="pl-c1">1000</span>).Forever(); <span class="pl-k">void</span> <span class="pl-en">setup</span>() { } <span class="pl-k">void</span> <span class="pl-en">loop</span>() { led.<span class="pl-c1">Update</span>(); }</pre></div> <p dir="auto">It is also possible to specify fade-on, on- and fade-off durations for the breathing mode to customize the effect.</p> <div class="highlight highlight-source-c++ notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="// LED will fade-on in 500ms, stay on for 1000ms, and fade-off in 500ms. // It will delay for 1000ms afterwards and continue the pattern. auto led = JLed(13).Breathe(500, 1000, 500).DelayAfter(1000).Forever();"><pre><span class="pl-c"><span class="pl-c">//</span> LED will fade-on in 500ms, stay on for 1000ms, and fade-off in 500ms.</span> <span class="pl-c"><span class="pl-c">//</span> It will delay for 1000ms afterwards and continue the pattern.</span> <span class="pl-k">auto</span> led = JLed(<span class="pl-c1">13</span>).Breathe(<span class="pl-c1">500</span>, <span class="pl-c1">1000</span>, <span class="pl-c1">500</span>).DelayAfter(<span class="pl-c1">1000</span>).Forever();</pre></div> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">Candle</h4><a id="user-content-candle" class="anchor" aria-label="Permalink: Candle" href="#candle"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">In candle mode, the random flickering of a candle or fire is simulated. The builder method has the following signature: <code>Candle(uint8_t speed, uint8_t jitter, uin16_t period)</code></p> <ul dir="auto"> <li><code>speed</code> - controls the speed of the effect. 0 for fastest, increasing speed divides into halve per increment. The default value is 7.</li> <li><code>jitter</code> - the amount of jittering. 0 none (constant on), 255 maximum. Default value is 15.</li> <li><code>period</code> - Period of effect in ms. The default value is 65535 ms.</li> </ul> <p dir="auto">The default settings simulate a candle. For a fire effect for example use call the method with <code>Candle(5 /*speed*/, 100 /* jitter*/)</code>.</p> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">Candle example</h5><a id="user-content-candle-example" class="anchor" aria-label="Permalink: Candle example" href="#candle-example"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-c++ notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="#include <jled.h> // Candle on LED pin 13 (PWM capable). auto led = JLed(13).Candle(); void setup() { } void loop() { led.Update(); }"><pre>#<span class="pl-k">include</span> <span class="pl-s"><span class="pl-pds"><</span>jled.h<span class="pl-pds">></span></span> <span class="pl-c"><span class="pl-c">//</span> Candle on LED pin 13 (PWM capable).</span> <span class="pl-k">auto</span> led = JLed(<span class="pl-c1">13</span>).Candle(); <span class="pl-k">void</span> <span class="pl-en">setup</span>() { } <span class="pl-k">void</span> <span class="pl-en">loop</span>() { led.<span class="pl-c1">Update</span>(); }</pre></div> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">FadeOn</h4><a id="user-content-fadeon" class="anchor" aria-label="Permalink: FadeOn" href="#fadeon"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">In FadeOn mode, the LED is smoothly faded on to 100% brightness using PWM. The <code>FadeOn()</code> method takes the period of the effect as an argument.</p> <p dir="auto">The brightness function uses an approximation of this function (example with period 1000):</p> <p dir="auto"><a href="https://www.wolframalpha.com/input/?i=plot+(exp(sin((t-1000%2F2.)*PI%2F1000))-0.36787944)*108.0++t%3D0+to+1000" rel="nofollow"><img src="/jandelgado/jled/raw/master/doc/fadeon_plot.png" alt="fadeon function" style="max-width: 100%;"></a></p> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">FadeOn example</h5><a id="user-content-fadeon-example" class="anchor" aria-label="Permalink: FadeOn example" href="#fadeon-example"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-c++ notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="#include <jled.h> // LED is connected to pin 9 (PWM capable) gpio auto led = JLed(9).FadeOn(1000).DelayBefore(2000); void setup() { } void loop() { led.Update(); }"><pre>#<span class="pl-k">include</span> <span class="pl-s"><span class="pl-pds"><</span>jled.h<span class="pl-pds">></span></span> <span class="pl-c"><span class="pl-c">//</span> LED is connected to pin 9 (PWM capable) gpio</span> <span class="pl-k">auto</span> led = JLed(<span class="pl-c1">9</span>).FadeOn(<span class="pl-c1">1000</span>).DelayBefore(<span class="pl-c1">2000</span>); <span class="pl-k">void</span> <span class="pl-en">setup</span>() { } <span class="pl-k">void</span> <span class="pl-en">loop</span>() { led.<span class="pl-c1">Update</span>(); }</pre></div> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">FadeOff</h4><a id="user-content-fadeoff" class="anchor" aria-label="Permalink: FadeOff" href="#fadeoff"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">In FadeOff mode, the LED is smoothly faded off using PWM. The fade starts at 100% brightness. Internally it is implemented as a mirrored version of the FadeOn function, i.e., FadeOff(t) = FadeOn(period-t). The <code>FadeOff()</code> method takes the period of the effect as argument.</p> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">Fade</h4><a id="user-content-fade" class="anchor" aria-label="Permalink: Fade" href="#fade"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The Fade effect allows to fade from any start value <code>from</code> to any target value <code>to</code> with the given duration. Internally it sets up a <code>FadeOn</code> or <code>FadeOff</code> effect and <code>MinBrightness</code> and <code>MaxBrightness</code> values properly. The <code>Fade</code> method take three arguments: <code>from</code>, <code>to</code> and <code>duration</code>.</p> <p dir="auto"><a href="/jandelgado/jled/blob/master/examples/fade_from_to"><img alt="fade from-to" src="/jandelgado/jled/raw/master/doc/fade_from-to.png" height="200" style="max-width: 100%;"></a></p> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">Fade example</h5><a id="user-content-fade-example" class="anchor" aria-label="Permalink: Fade example" href="#fade-example"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="highlight highlight-source-c++ notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="#include <jled.h> // fade from 100 to 200 with period 1000 auto led = JLed(9).Fade(100, 200, 1000); void setup() { } void loop() { led.Update(); }"><pre>#<span class="pl-k">include</span> <span class="pl-s"><span class="pl-pds"><</span>jled.h<span class="pl-pds">></span></span> <span class="pl-c"><span class="pl-c">//</span> fade from 100 to 200 with period 1000</span> <span class="pl-k">auto</span> led = JLed(<span class="pl-c1">9</span>).Fade(<span class="pl-c1">100</span>, <span class="pl-c1">200</span>, <span class="pl-c1">1000</span>); <span class="pl-k">void</span> <span class="pl-en">setup</span>() { } <span class="pl-k">void</span> <span class="pl-en">loop</span>() { led.<span class="pl-c1">Update</span>(); }</pre></div> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">User provided brightness function</h4><a id="user-content-user-provided-brightness-function" class="anchor" aria-label="Permalink: User provided brightness function" href="#user-provided-brightness-function"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">It is also possible to provide a user defined brightness evaluator. The class must be derived from the <code>jled::BrightnessEvaluator</code> class and implement two methods:</p> <ul dir="auto"> <li><code>uint8_t Eval(uint32_t t) const</code> - the brightness evaluation function that calculates a brightness for the given time <code>t</code>. The brightness must be returned as an unsigned byte, where 0 means LED off and 255 means full brightness.</li> <li><code>uint16_t Period() const</code> - period of the effect.</li> </ul> <p dir="auto">All time values are specified in milliseconds.</p> <p dir="auto">The <a href="/jandelgado/jled/blob/master/examples/user_func">user_func</a> example demonstrates a simple user provided brightness function, while the <a href="/jandelgado/jled/blob/master/examples/morse">morse</a> example shows how a more complex application, allowing you to send morse codes (not necessarily with an LED), can be realized.</p> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">User provided brightness function example</h5><a id="user-content-user-provided-brightness-function-example" class="anchor" aria-label="Permalink: User provided brightness function example" href="#user-provided-brightness-function-example"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The example uses a user provided function to calculate the brightness.</p> <div class="highlight highlight-source-c++ notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="class UserEffect : public jled::BrightnessEvaluator { public: uint8_t Eval(uint32_t t) const override { // this function changes between 0 and 255 and // vice versa every 250 ms. return 255*((t/250)%2); } // duration of effect: 5 seconds. uint16_t Period() const override { return 5000; } };"><pre><span class="pl-k">class</span> <span class="pl-en">UserEffect</span> : <span class="pl-k">public</span> <span class="pl-en">jled</span>::BrightnessEvaluator { <span class="pl-k">public:</span> <span class="pl-c1">uint8_t</span> <span class="pl-en">Eval</span>(<span class="pl-c1">uint32_t</span> t) <span class="pl-k">const</span> <span class="pl-k">override</span> { <span class="pl-c"><span class="pl-c">//</span> this function changes between 0 and 255 and</span> <span class="pl-c"><span class="pl-c">//</span> vice versa every 250 ms.</span> <span class="pl-k">return</span> <span class="pl-c1">255</span>*((t/<span class="pl-c1">250</span>)%<span class="pl-c1">2</span>); } <span class="pl-c"><span class="pl-c">//</span> duration of effect: 5 seconds.</span> <span class="pl-c1">uint16_t</span> <span class="pl-en">Period</span>() <span class="pl-k">const</span> <span class="pl-k">override</span> { <span class="pl-k">return</span> <span class="pl-c1">5000</span>; } };</pre></div> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">Delays and repetitions</h4><a id="user-content-delays-and-repetitions" class="anchor" aria-label="Permalink: Delays and repetitions" href="#delays-and-repetitions"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">Initial delay before effect starts</h5><a id="user-content-initial-delay-before-effect-starts" class="anchor" aria-label="Permalink: Initial delay before effect starts" href="#initial-delay-before-effect-starts"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Use the <code>DelayBefore()</code> method to specify a delay before the first effect starts. The default value is 0 ms.</p> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">Delay after effect finished</h5><a id="user-content-delay-after-effect-finished" class="anchor" aria-label="Permalink: Delay after effect finished" href="#delay-after-effect-finished"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Use the <code>DelayAfter()</code> method to specify a delay after each repetition of an effect. The default value is 0 ms.</p> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">Repetitions</h5><a id="user-content-repetitions" class="anchor" aria-label="Permalink: Repetitions" href="#repetitions"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Use the <code>Repeat()</code> method to specify the number of repetitions. The default value is 1 repetition. The <code>Forever()</code> methods sets to repeat the effect forever. Each repetition includes a full period of the effect and the time specified by <code>DelayAfter()</code> method.</p> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">State functions</h4><a id="user-content-state-functions" class="anchor" aria-label="Permalink: State functions" href="#state-functions"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">Update</h5><a id="user-content-update" class="anchor" aria-label="Permalink: Update" href="#update"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Call <code>Update(int16_t *pLast=nullptr)</code> or <code>Update(uint32_t t, int16_t *pLast=nullptr)</code> to periodically update the state of the LED.</p> <p dir="auto"><code>Update</code> returns <code>true</code>, if the effect is active, or <code>false</code> when it finished. <code>Update()</code> is a shortcut to call <code>Update(uint32_t t)</code> with the current time in milliseconds.</p> <p dir="auto">To obtain the value of the last written brightness value (after applying min- and max-brightness transformations), pass an additional optional pointer <code>*pLast</code> , where this value will be stored, when it was written. Example:</p> <div class="highlight highlight-source-c++ notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="int16_t lastVal = -1; led.Update(&lastVal); if (lastVal != -1) { // the LED was updated with the brightness value now stored in lastVal ... }"><pre><span class="pl-c1">int16_t</span> lastVal = -<span class="pl-c1">1</span>; led.Update(&lastVal); <span class="pl-k">if</span> (lastVal != -<span class="pl-c1">1</span>) { <span class="pl-c"><span class="pl-c">//</span> the LED was updated with the brightness value now stored in lastVal</span> ... }</pre></div> <p dir="auto">Most of the time just calling <code>Update()</code> without any parameters is what you want.</p> <p dir="auto">See <a href="/jandelgado/jled/blob/master/examples/last_brightness">last_brightness</a> example for a working example.</p> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">IsRunning</h5><a id="user-content-isrunning" class="anchor" aria-label="Permalink: IsRunning" href="#isrunning"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><code>IsRunning()</code> returns <code>true</code> if the current effect is running, else <code>false</code>.</p> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">Reset</h5><a id="user-content-reset" class="anchor" aria-label="Permalink: Reset" href="#reset"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">A call to <code>Reset()</code> brings the JLed object to its initial state. Use it when you want to start-over an effect.</p> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">Immediate Stop</h5><a id="user-content-immediate-stop" class="anchor" aria-label="Permalink: Immediate Stop" href="#immediate-stop"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Call <code>Stop()</code> to immediately turn the LED off and stop any running effects. Further calls to <code>Update()</code> will have no effect, unless the Led is reset using <code>Reset()</code> or a new effect is activated. By default, <code>Stop()</code> sets the current brightness level to <code>MinBrightness</code>.</p> <p dir="auto"><code>Stop()</code> takes an optional argument <code>mode</code> of type <code>JLed::eStopMode</code>:</p> <ul dir="auto"> <li>if set to <code>JLed::eStopMode::KEEP_CURRENT</code>, the LEDs current level will be kept</li> <li>if set to <code>JLed::eStopMode::FULL_OFF</code> the level of the LED is set to <code>0</code>, regardless of what <code>MinBrightness</code> is set to, effectively turning the LED off</li> <li>if set to <code>JLed::eStopMode::TO_MIN_BRIGHTNESS</code> (default behavior), the LED will set to the value of <code>MinBrightness</code></li> </ul> <div class="highlight highlight-source-c++ notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="// stop the effect and set the brightness level to 0, regardless of min brightness led.Stop(JLed::eStopMode::FULL_OFF);"><pre><span class="pl-c"><span class="pl-c">//</span> stop the effect and set the brightness level to 0, regardless of min brightness</span> led.Stop(JLed::eStopMode::FULL_OFF);</pre></div> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">Misc functions</h4><a id="user-content-misc-functions" class="anchor" aria-label="Permalink: Misc functions" href="#misc-functions"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">Low active for inverted output</h5><a id="user-content-low-active-for-inverted-output" class="anchor" aria-label="Permalink: Low active for inverted output" href="#low-active-for-inverted-output"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Use the <code>LowActive()</code> method when the connected LED is low active. All output will be inverted by JLed (i.e., instead of x, the value of 255-x will be set).</p> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">Minimum- and Maximum brightness level</h5><a id="user-content-minimum--and-maximum-brightness-level" class="anchor" aria-label="Permalink: Minimum- and Maximum brightness level" href="#minimum--and-maximum-brightness-level"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The <code>MaxBrightness(uint8_t level)</code> method is used to set the maximum brightness level of the LED. A level of 255 (the default) is full brightness, while 0 effectively turns the LED off. In the same way, the <code>MinBrightness(uint8_t level)</code> method sets the minimum brightness level. The default minimum level is 0. If minimum or maximum brightness levels are set, the output value is scaled to be within the interval defined by <code>[minimum brightness, maximum brightness]</code>: a value of 0 will be mapped to the minimum brightness level, a value of 255 will be mapped to the maximum brightness level.</p> <p dir="auto">The <code>uint_8 MaxBrightness() const</code> method returns the current maximum brightness level. <code>uint8_t MinBrightness() const</code> returns the current minimum brightness level.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Controlling a group of LEDs</h3><a id="user-content-controlling-a-group-of-leds" class="anchor" aria-label="Permalink: Controlling a group of LEDs" href="#controlling-a-group-of-leds"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The <code>JLedSequence</code> class allows controlling a group of <code>JLed</code> objects simultaneously, either in parallel or sequentially, starting the next <code>JLed</code> effect when the previous finished. The constructor takes the mode (<code>PARALLEL</code>, <code>SEQUENCE</code>), an array of <code>JLed</code> objects and the size of the array, e.g.</p> <div class="highlight highlight-source-c++ notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="JLed leds[] = { JLed(4).Blink(750, 250).Repeat(10), JLed(3).Breathe(2000).Repeat(5); }; auto sequence = JLedSequence(JLedSequence::eMode::PARALLEL, leds).Repeat(2); void setup() { } void loop() { sequence.Update(); }"><pre>JLed leds[] = { <span class="pl-c1">JLed</span>(<span class="pl-c1">4</span>).<span class="pl-c1">Blink</span>(<span class="pl-c1">750</span>, <span class="pl-c1">250</span>).<span class="pl-c1">Repeat</span>(<span class="pl-c1">10</span>), <span class="pl-c1">JLed</span>(<span class="pl-c1">3</span>).<span class="pl-c1">Breathe</span>(<span class="pl-c1">2000</span>).<span class="pl-c1">Repeat</span>(<span class="pl-c1">5</span>); }; <span class="pl-k">auto</span> sequence = JLedSequence(JLedSequence::eMode::PARALLEL, leds).Repeat(<span class="pl-c1">2</span>); <span class="pl-k">void</span> <span class="pl-en">setup</span>() { } <span class="pl-k">void</span> <span class="pl-en">loop</span>() { sequence.<span class="pl-c1">Update</span>(); }</pre></div> <p dir="auto">Because the size of the array is known at compile time in this example, it is not necessary to pass the array size to the constructor. A second constructor is available in case the <code>JLed</code> array is created dynamically at runtime: <code>JLed(eMode mode, JLed* leds, size_t n)</code>.</p> <p dir="auto">The <code>JLedSequence</code> provides the following methods:</p> <ul dir="auto"> <li><code>Update()</code> - updates the active <code>JLed</code> objects controlled by the sequence. Like the <code>JLed::Update()</code> method, it returns <code>true</code> if an effect is running, else <code>false</code>.</li> <li>Use the <code>Repeat(n)</code> method to specify the number of repetitions. The default value is 1 repetition. The <code>Forever()</code> methods sets to repeat the sequence forever.</li> <li><code>Stop()</code> - turns off all <code>JLed</code> objects controlled by the sequence and stops the sequence. Further calls to <code>Update()</code> will have no effect.</li> <li><code>Reset()</code> - Resets all <code>JLed</code> objects controlled by the sequence and the sequence, resulting in a start-over.</li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Framework notes</h2><a id="user-content-framework-notes" class="anchor" aria-label="Permalink: Framework notes" href="#framework-notes"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">JLed supports the Arduino and <a href="https://www.mbed.org" rel="nofollow">mbed</a> frameworks. When using platformio, the framework to be used is configured in the <code>platform.ini</code> file, as shown in the following example, which for example selects the <code>mbed</code> framework:</p> <div class="highlight highlight-source-ini notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="[env:nucleo_f401re_mbed] platform=ststm32 board = nucleo_f401re framework = mbed build_flags = -Isrc src_filter = +<../../src/> +<./> upload_protocol=stlink"><pre><span class="pl-en">[env:nucleo_f401re_mbed]</span> <span class="pl-k">platform</span>=ststm32 <span class="pl-k">board</span> = nucleo_f401re <span class="pl-k">framework</span> = mbed <span class="pl-k">build_flags</span> = -Isrc <span class="pl-k">src_filter</span> = +<../../src/> +<./> <span class="pl-k">upload_protocol</span>=stlink</pre></div> <p dir="auto">An <a href="/jandelgado/jled/blob/master/examples/multiled_mbed/multiled_mbed.cpp">mbed example is provided here</a>. To compile it for the F401RE, make your <a href="/jandelgado/jled/blob/master/platform.ini">plaform.ini</a> look like:</p> <div class="highlight highlight-source-ini notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="... [platformio] default_envs = nucleo_f401re_mbed src_dir = examples/multiled_mbed ..."><pre>... <span class="pl-en">[platformio]</span> <span class="pl-k">default_envs</span> = nucleo_f401re_mbed <span class="pl-k">src_dir</span> = examples/multiled_mbed ...</pre></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Platform notes</h2><a id="user-content-platform-notes" class="anchor" aria-label="Permalink: Platform notes" href="#platform-notes"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">ESP8266</h3><a id="user-content-esp8266" class="anchor" aria-label="Permalink: ESP8266" href="#esp8266"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The DAC of the ESP8266 operates with 10 bits, every value JLed writes out gets automatically scaled to 10 bits, since JLed internally only uses 8 bits. The scaling methods make sure that min/max relationships are preserved, i.e., 0 is mapped to 0 and 255 is mapped to 1023. When using a user-defined brightness function on the ESP8266, 8-bit values must be returned, all scaling is done by JLed transparently for the application, yielding platform-independent code.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">ESP32</h3><a id="user-content-esp32" class="anchor" aria-label="Permalink: ESP32" href="#esp32"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">When compiling for the ESP32, JLed uses <code>ledc</code> functions provided by the ESP32 ESP-IDF SDK. (See <a href="https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/ledc.html" rel="nofollow">esspressif documentation</a> for details).</p> <p dir="auto">The <code>ledc</code> API connects so-called channels to GPIO pins, enabling them to use PWM. There are 16 channels available. Unless otherwise specified, JLed automatically picks the next free channel, starting with channel 0 and wrapping over after channel 15. To manually specify a channel, the JLed object must be constructed this way:</p> <div class="highlight highlight-source-c++ notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="auto esp32Led = JLed(jled::Esp32Hal(2, 7)).Blink(1000, 1000).Forever();"><pre><span class="pl-k">auto</span> esp32Led = JLed(jled::Esp32Hal(<span class="pl-c1">2</span>, <span class="pl-c1">7</span>)).Blink(<span class="pl-c1">1000</span>, <span class="pl-c1">1000</span>).Forever();</pre></div> <p dir="auto">The <code>jled::Esp32Hal(pin, chan)</code> constructor takes the pin number as the first argument and the ESP32 ledc channel number on the second position. Note that using the above-mentioned constructor results in non-platform independent code, so it should be avoided and is normally not necessary.</p> <p dir="auto">For completeness, the full signature of the Esp32Hal constructor is</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="Esp32Hal(PinType pin, int chan = kAutoSelectChan, uint16_t freq = 5000, ledc_timer_t timer = LEDC_TIMER_0)"><pre class="notranslate"><code>Esp32Hal(PinType pin, int chan = kAutoSelectChan, uint16_t freq = 5000, ledc_timer_t timer = LEDC_TIMER_0) </code></pre></div> <p dir="auto">which also allows to override the default frequency and timer used, when needed.</p> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">Using ESP-IDF</h4><a id="user-content-using-esp-idf" class="anchor" aria-label="Permalink: Using ESP-IDF" href="#using-esp-idf"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Since JLed uses the ESP-IDF SDK, JLed can also be directly used in ESP-IDF projects, without the need of using the Arduino Framework (which is also possible). See these repositories for example projects:</p> <ul dir="auto"> <li><a href="https://github.com/jandelgado/jled-esp-idf-example">https://github.com/jandelgado/jled-esp-idf-example</a></li> <li><a href="https://github.com/jandelgado/jled-esp-idf-platformio-example">https://github.com/jandelgado/jled-esp-idf-platformio-example</a></li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">STM32</h3><a id="user-content-stm32" class="anchor" aria-label="Permalink: STM32" href="#stm32"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">Arduino framework</h4><a id="user-content-arduino-framework" class="anchor" aria-label="Permalink: Arduino framework" href="#arduino-framework"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">I had success running JLed on a <a href="https://www.st.com/en/evaluation-tools/nucleo-f401re.html" rel="nofollow">STM32 Nucleo64 F401RE board</a> using this <a href="https://github.com/rogerclarkmelbourne/Arduino_STM32/tree/master/STM32F4">STM32 Arduino core</a> and compiling examples from the Arduino IDE. Note that the <code>stlink</code> is necessary to upload sketches to the microcontroller.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Raspberry Pi Pico</h3><a id="user-content-raspberry-pi-pico" class="anchor" aria-label="Permalink: Raspberry Pi Pico" href="#raspberry-pi-pico"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">When using JLed on a Raspberry Pi Pico, the Pico-SDK and tools can be used. The Pico supports up to 16 PWM channels in parallel. See the <a href="/jandelgado/jled/blob/master/examples/raspi_pico">pico-demo</a> for an example and build instructions when the Pico-SDK is used.</p> <p dir="auto">A probably easier approach is to use the Arduino platform. See <a href="/jandelgado/jled/blob/master/platformio.ini">platformio.ini</a> for details (look for <code>env:raspberrypi_pico_w</code>, which targets the Raspberry Pi Pico W.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Example sketches</h2><a id="user-content-example-sketches" class="anchor" aria-label="Permalink: Example sketches" href="#example-sketches"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Example sketches are provided in the <a href="/jandelgado/jled/blob/master/examples">examples</a> directory.</p> <ul dir="auto"> <li><a href="/jandelgado/jled/blob/master/examples/hello">Hello, world</a></li> <li><a href="/jandelgado/jled/blob/master/examples/simple_on">Turn LED on after a delay</a></li> <li><a href="/jandelgado/jled/blob/master/examples/breathe">Breathe effect</a></li> <li><a href="/jandelgado/jled/blob/master/examples/candle">Candle effect</a></li> <li><a href="/jandelgado/jled/blob/master/examples/fade_on">Fade LED on</a></li> <li><a href="/jandelgado/jled/blob/master/examples/fade_off">Fade LED off</a></li> <li><a href="/jandelgado/jled/blob/master/examples/fade_from_to">Fade from-to effect</a></li> <li><a href="/jandelgado/jled/blob/master/examples/pulse">Pulse effect</a></li> <li><a href="/jandelgado/jled/blob/master/examples/multiled">Controlling multiple LEDs in parallel</a></li> <li><a href="/jandelgado/jled/blob/master/examples/multiled_mbed">Controlling multiple LEDs in parallel (mbed)</a></li> <li><a href="/jandelgado/jled/blob/master/examples/sequence">Controlling multiple LEDs sequentially</a></li> <li><a href="/jandelgado/jled/blob/master/examples/user_func">Simple User provided effect</a></li> <li><a href="/jandelgado/jled/blob/master/examples/morse">Morsecode example</a></li> <li><a href="/jandelgado/jled/blob/master/examples/last_brightness">Last brightness value example</a></li> <li><a href="/jandelgado/jled/blob/master/examples/custom_hal">Custom HAL example</a></li> <li><a href="https://github.com/jandelgado/jled-pca9685-hal">Custom PCA9685 HAL</a></li> <li><a href="https://github.com/jandelgado/jled-example-switch-sequence">Dynamically switch sequences</a></li> <li><a href="https://jandelgado.github.io/jled-wasm" rel="nofollow">JLed compiled to WASM and running in the browser</a></li> <li><a href="/jandelgado/jled/blob/master/examples/raspi_pico">Raspberry Pi Pico Demo</a></li> <li><a href="https://github.com/jandelgado/jled-esp-idf-example">ESP32 ESP-IDF example</a></li> <li><a href="https://github.com/jandelgado/jled-esp-idf-platformio-example">ESP32 ESP-IDF PlatformIO example</a></li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Building examples with PlatformIO</h3><a id="user-content-building-examples-with-platformio" class="anchor" aria-label="Permalink: Building examples with PlatformIO" href="#building-examples-with-platformio"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">To build an example using <a href="http://platformio.org/" rel="nofollow">the PlatformIO ide</a>, uncomment the example to be built in the <a href="/jandelgado/jled/blob/master/platformio.ini">platformio.ini</a> project file, e.g.:</p> <div class="highlight highlight-source-ini notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="[platformio] ; uncomment example to build src_dir = examples/hello ;src_dir = examples/breathe"><pre><span class="pl-en">[platformio]</span> <span class="pl-c"><span class="pl-c">;</span> uncomment example to build</span> <span class="pl-k">src_dir</span> = examples/hello <span class="pl-c"><span class="pl-c">;</span>src_dir = examples/breathe</span></pre></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Building examples with the Arduino IDE</h3><a id="user-content-building-examples-with-the-arduino-ide" class="anchor" aria-label="Permalink: Building examples with the Arduino IDE" href="#building-examples-with-the-arduino-ide"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">To build an example sketch in the Arduino IDE, select an example from the <code>File</code> > <code>Examples</code> > <code>JLed</code> menu.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Extending</h2><a id="user-content-extending" class="anchor" aria-label="Permalink: Extending" href="#extending"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Support new hardware</h3><a id="user-content-support-new-hardware" class="anchor" aria-label="Permalink: Support new hardware" href="#support-new-hardware"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">JLed uses a very thin hardware abstraction layer (hal) to abstract access to the actual MCU/framework used (e.g. ESP32, ESP8266). The hal object encapsulate access to the GPIO and time functionality of the MCU under the framework being used. During the unit test, mocked hal instances are used, enabling tests to check the generated output. The <a href="/jandelgado/jled/blob/master/examples/custom_hal">Custom HAL project</a> provides an example for a user define HAL.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Unit tests</h2><a id="user-content-unit-tests" class="anchor" aria-label="Permalink: Unit tests" href="#unit-tests"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">JLed comes with an exhaustive host-based unit test suite. Info on how to run the host-based provided unit tests <a href="/jandelgado/jled/blob/master/test/README.md">is provided here</a>.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Contributing</h2><a id="user-content-contributing" class="anchor" aria-label="Permalink: Contributing" href="#contributing"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>fork this repository</li> <li>create your feature branch</li> <li>add code</li> <li>add <a href="/jandelgado/jled/blob/master/test">unit test(s)</a></li> <li>add <a href="/jandelgado/jled/blob/master/README.md">documentation</a></li> <li>make sure the cpp <a href="https://github.com/cpplint/cpplint">linter</a> does not report any problems (run <code>make lint</code>). Hint: use <code>clang-format</code> with the provided <a href="/jandelgado/jled/blob/master/.clang-format">settings</a></li> <li>commit changes</li> <li>submit a PR</li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">FAQ</h2><a id="user-content-faq" class="anchor" aria-label="Permalink: FAQ" href="#faq"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">How do I check if a JLed object is still being updated?</h3><a id="user-content-how-do-i-check-if-a-jled-object-is-still-being-updated" class="anchor" aria-label="Permalink: How do I check if a JLed object is still being updated?" href="#how-do-i-check-if-a-jled-object-is-still-being-updated"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Check the return value of the <code>JLed::Update</code> method: the method returns <code>true</code> if the effect is still running, otherwise <code>false</code>.</li> <li>The <code>JLed::IsRunning</code> method returns <code>true</code> if an effect is running, else <code>false</code>.</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">How do I restart an effect?</h3><a id="user-content-how-do-i-restart-an-effect" class="anchor" aria-label="Permalink: How do I restart an effect?" href="#how-do-i-restart-an-effect"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Call <code>Reset()</code> on a <code>JLed</code> object to start over.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">How do I change a running effect?</h3><a id="user-content-how-do-i-change-a-running-effect" class="anchor" aria-label="Permalink: How do I change a running effect?" href="#how-do-i-change-a-running-effect"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Just 'reconfigure' the <code>JLed</code> with any of the effect methods (e.g. <code>FadeOn</code>, <code>Breathe</code>, <code>Blink</code> etc). Time-wise, the effect will start over.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Author and Copyright</h2><a id="user-content-author-and-copyright" class="anchor" aria-label="Permalink: Author and Copyright" href="#author-and-copyright"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Copyright 2017-2022 by Jan Delgado, jdelgado[at]gmx.net.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">License</h2><a id="user-content-license" class="anchor" aria-label="Permalink: License" href="#license"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><a href="/jandelgado/jled/blob/master/LICENSE">MIT</a></p> </article></div></div></div></div></div> <!-- --> <!-- --> <script type="application/json" id="__PRIMER_DATA_:R0:__">{"resolvedServerColorMode":"day"}</script></div> </react-partial> <input type="hidden" data-csrf="true" value="ZyhLGCpPyYSbN53AT246CXmkp9DNzEuXJBoO8Q4uJ3tReedD5VP9F53bbE6yXrsxkxRcMqvMudpkBnDY4DOkVw==" /> </div> <div data-view-component="true" class="Layout-sidebar"> <div class="BorderGrid about-margin" data-pjax> <div class="BorderGrid-row"> <div class="BorderGrid-cell"> <div class="hide-sm hide-md"> <h2 class="mb-3 h4">About</h2> <p class="f4 my-3"> Non-blocking LED controlling library for Arduino and friends. </p> <h3 class="sr-only">Topics</h3> <div class="my-3"> <div class="f6"> <a href="/topics/arduino" title="Topic: arduino" data-view-component="true" class="topic-tag topic-tag-link"> arduino </a> <a href="/topics/esp8266" title="Topic: esp8266" data-view-component="true" class="topic-tag topic-tag-link"> esp8266 </a> <a href="/topics/embedded" title="Topic: embedded" data-view-component="true" class="topic-tag topic-tag-link"> embedded </a> <a href="/topics/esp32" title="Topic: esp32" data-view-component="true" class="topic-tag topic-tag-link"> esp32 </a> <a href="/topics/stm32" title="Topic: stm32" data-view-component="true" class="topic-tag topic-tag-link"> stm32 </a> <a href="/topics/mbed" title="Topic: mbed" data-view-component="true" class="topic-tag topic-tag-link"> mbed </a> <a href="/topics/led" title="Topic: led" data-view-component="true" class="topic-tag topic-tag-link"> led </a> <a href="/topics/breathe" title="Topic: breathe" data-view-component="true" class="topic-tag topic-tag-link"> breathe </a> <a href="/topics/esp-idf" title="Topic: esp-idf" data-view-component="true" class="topic-tag topic-tag-link"> esp-idf </a> <a href="/topics/effect" title="Topic: effect" data-view-component="true" class="topic-tag topic-tag-link"> effect </a> <a href="/topics/non-blocking" title="Topic: non-blocking" data-view-component="true" class="topic-tag topic-tag-link"> non-blocking </a> <a href="/topics/fade" title="Topic: fade" data-view-component="true" class="topic-tag topic-tag-link"> fade </a> <a href="/topics/controlling-leds" title="Topic: controlling-leds" data-view-component="true" class="topic-tag topic-tag-link"> controlling-leds </a> <a href="/topics/raspberry-pi-pico" title="Topic: raspberry-pi-pico" data-view-component="true" class="topic-tag topic-tag-link"> raspberry-pi-pico </a> </div> </div> <h3 class="sr-only">Resources</h3> <div class="mt-2"> <a class="Link--muted" data-analytics-event="{"category":"Repository Overview","action":"click","label":"location:sidebar;file:readme"}" href="#readme-ov-file"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-book mr-2"> <path d="M0 1.75A.75.75 0 0 1 .75 1h4.253c1.227 0 2.317.59 3 1.501A3.743 3.743 0 0 1 11.006 1h4.245a.75.75 0 0 1 .75.75v10.5a.75.75 0 0 1-.75.75h-4.507a2.25 2.25 0 0 0-1.591.659l-.622.621a.75.75 0 0 1-1.06 0l-.622-.621A2.25 2.25 0 0 0 5.258 13H.75a.75.75 0 0 1-.75-.75Zm7.251 10.324.004-5.073-.002-2.253A2.25 2.25 0 0 0 5.003 2.5H1.5v9h3.757a3.75 3.75 0 0 1 1.994.574ZM8.755 4.75l-.004 7.322a3.752 3.752 0 0 1 1.992-.572H14.5v-9h-3.495a2.25 2.25 0 0 0-2.25 2.25Z"></path> </svg> Readme </a> </div> <h3 class="sr-only">License</h3> <div class="mt-2"> <a href="#MIT-1-ov-file" class="Link--muted" data-analytics-event="{"category":"Repository Overview","action":"click","label":"location:sidebar;file:license"}" > <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-law mr-2"> <path d="M8.75.75V2h.985c.304 0 .603.08.867.231l1.29.736c.038.022.08.033.124.033h2.234a.75.75 0 0 1 0 1.5h-.427l2.111 4.692a.75.75 0 0 1-.154.838l-.53-.53.529.531-.001.002-.002.002-.006.006-.006.005-.01.01-.045.04c-.21.176-.441.327-.686.45C14.556 10.78 13.88 11 13 11a4.498 4.498 0 0 1-2.023-.454 3.544 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class="mt-2"> <a href="/jandelgado/jled/activity" data-view-component="true" class="Link Link--muted"><svg text="gray" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-pulse mr-2"> <path d="M6 2c.306 0 .582.187.696.471L10 10.731l1.304-3.26A.751.751 0 0 1 12 7h3.25a.75.75 0 0 1 0 1.5h-2.742l-1.812 4.528a.751.751 0 0 1-1.392 0L6 4.77 4.696 8.03A.75.75 0 0 1 4 8.5H.75a.75.75 0 0 1 0-1.5h2.742l1.812-4.529A.751.751 0 0 1 6 2Z"></path> </svg> <span class="color-fg-muted">Activity</span></a> </div> <h3 class="sr-only">Stars</h3> <div class="mt-2"> <a href="/jandelgado/jled/stargazers" data-view-component="true" class="Link Link--muted"><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-star mr-2"> <path d="M8 .25a.75.75 0 0 1 .673.418l1.882 3.815 4.21.612a.75.75 0 0 1 .416 1.279l-3.046 2.97.719 4.192a.751.751 0 0 1-1.088.791L8 12.347l-3.766 1.98a.75.75 0 0 1-1.088-.79l.72-4.194L.818 6.374a.75.75 0 0 1 .416-1.28l4.21-.611L7.327.668A.75.75 0 0 1 8 .25Zm0 2.445L6.615 5.5a.75.75 0 0 1-.564.41l-3.097.45 2.24 2.184a.75.75 0 0 1 .216.664l-.528 3.084 2.769-1.456a.75.75 0 0 1 .698 0l2.77 1.456-.53-3.084a.75.75 0 0 1 .216-.664l2.24-2.183-3.096-.45a.75.75 0 0 1-.564-.41L8 2.694Z"></path> </svg> <strong>335</strong> stars</a> </div> <h3 class="sr-only">Watchers</h3> <div class="mt-2"> <a href="/jandelgado/jled/watchers" data-view-component="true" class="Link Link--muted"><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-eye mr-2"> <path d="M8 2c1.981 0 3.671.992 4.933 2.078 1.27 1.091 2.187 2.345 2.637 3.023a1.62 1.62 0 0 1 0 1.798c-.45.678-1.367 1.932-2.637 3.023C11.67 13.008 9.981 14 8 14c-1.981 0-3.671-.992-4.933-2.078C1.797 10.83.88 9.576.43 8.898a1.62 1.62 0 0 1 0-1.798c.45-.677 1.367-1.931 2.637-3.022C4.33 2.992 6.019 2 8 2ZM1.679 7.932a.12.12 0 0 0 0 .136c.411.622 1.241 1.75 2.366 2.717C5.176 11.758 6.527 12.5 8 12.5c1.473 0 2.825-.742 3.955-1.715 1.124-.967 1.954-2.096 2.366-2.717a.12.12 0 0 0 0-.136c-.412-.621-1.242-1.75-2.366-2.717C10.824 4.242 9.473 3.5 8 3.5c-1.473 0-2.825.742-3.955 1.715-1.124.967-1.954 2.096-2.366 2.717ZM8 10a2 2 0 1 1-.001-3.999A2 2 0 0 1 8 10Z"></path> </svg> <strong>21</strong> watching</a> </div> <h3 class="sr-only">Forks</h3> <div class="mt-2"> <a href="/jandelgado/jled/forks" data-view-component="true" class="Link Link--muted"><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-repo-forked mr-2"> <path d="M5 5.372v.878c0 .414.336.75.75.75h4.5a.75.75 0 0 0 .75-.75v-.878a2.25 2.25 0 1 1 1.5 0v.878a2.25 2.25 0 0 1-2.25 2.25h-1.5v2.128a2.251 2.251 0 1 1-1.5 0V8.5h-1.5A2.25 2.25 0 0 1 3.5 6.25v-.878a2.25 2.25 0 1 1 1.5 0ZM5 3.25a.75.75 0 1 0-1.5 0 .75.75 0 0 0 1.5 0Zm6.75.75a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5Zm-3 8.75a.75.75 0 1 0-1.5 0 .75.75 0 0 0 1.5 0Z"></path> </svg> <strong>58</strong> forks</a> </div> <div class="mt-2"> <a class="Link--muted" href="/contact/report-content?content_url=https%3A%2F%2Fgithub.com%2Fjandelgado%2Fjled&report=jandelgado+%28user%29"> Report repository </a> </div> </div> </div> </div> <div class="BorderGrid-row"> <div class="BorderGrid-cell"> <h2 class="h4 mb-3" data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame"> <a href="/jandelgado/jled/releases" data-view-component="true" class="Link--primary no-underline Link">Releases <span title="36" data-view-component="true" class="Counter">36</span></a></h2> <a class="Link--primary d-flex no-underline" data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame" href="/jandelgado/jled/releases/tag/v4.15.0"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-tag flex-shrink-0 mt-1 color-fg-success"> <path d="M1 7.775V2.75C1 1.784 1.784 1 2.75 1h5.025c.464 0 .91.184 1.238.513l6.25 6.25a1.75 1.75 0 0 1 0 2.474l-5.026 5.026a1.75 1.75 0 0 1-2.474 0l-6.25-6.25A1.752 1.752 0 0 1 1 7.775Zm1.5 0c0 .066.026.13.073.177l6.25 6.25a.25.25 0 0 0 .354 0l5.025-5.025a.25.25 0 0 0 0-.354l-6.25-6.25a.25.25 0 0 0-.177-.073H2.75a.25.25 0 0 0-.25.25ZM6 5a1 1 0 1 1 0 2 1 1 0 0 1 0-2Z"></path> </svg> <div class="ml-2 min-width-0"> <div class="d-flex"> <span class="css-truncate css-truncate-target text-bold mr-2" style="max-width: none;">Release 4.15.0</span> <span title="Label: Latest" data-view-component="true" class="Label Label--success flex-shrink-0"> Latest </span> </div> <div class="text-small color-fg-muted"><relative-time datetime="2024-12-01T13:16:03Z" class="no-wrap">Dec 1, 2024</relative-time></div> </div> </a> <div data-view-component="true" class="mt-3"> <a text="small" data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame" href="/jandelgado/jled/releases" data-view-component="true" class="Link">+ 35 releases</a></div> </div> </div> <div class="BorderGrid-row" hidden> <div class="BorderGrid-cell"> <include-fragment src="/jandelgado/jled/used_by_list" accept="text/fragment+html"> </include-fragment> </div> </div> <div class="BorderGrid-row"> <div class="BorderGrid-cell"> <h2 class="h4 mb-3"> <a href="/jandelgado/jled/graphs/contributors" data-view-component="true" class="Link--primary no-underline Link d-flex flex-items-center">Contributors <span title="6" data-view-component="true" class="Counter ml-1">6</span></a></h2> <include-fragment src="/jandelgado/jled/contributors_list?count=6&current_repository=jled&items_to_show=6" aria-busy="true" aria-label="Loading contributors"> <ul class="list-style-none d-flex flex-wrap mb-n2"> <li class="mb-2 "> <div class="Skeleton avatar avatar-user mr-2" style="width:32px;height:32px;"></div> </li> <li class="mb-2 "> <div class="Skeleton avatar avatar-user mr-2" 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position-absolute right-0 top-0"> <clipboard-copy aria-label="Copy" class="ClipboardButton btn js-clipboard-copy m-2 p-0" data-copy-feedback="Copied!" data-tooltip-direction="w"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-copy js-clipboard-copy-icon m-2"> <path d="M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 0 1 0 1.5h-1.5a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-1.5a.75.75 0 0 1 1.5 0v1.5A1.75 1.75 0 0 1 9.25 16h-7.5A1.75 1.75 0 0 1 0 14.25Z"></path><path d="M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0 1 14.25 11h-7.5A1.75 1.75 0 0 1 5 9.25Zm1.75-.25a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-7.5a.25.25 0 0 0-.25-.25Z"></path> </svg> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-check js-clipboard-check-icon color-fg-success d-none m-2"> <path d="M13.78 4.22a.75.75 0 0 1 0 1.06l-7.25 7.25a.75.75 0 0 1-1.06 0L2.22 9.28a.751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018L6 10.94l6.72-6.72a.75.75 0 0 1 1.06 0Z"></path> </svg> </clipboard-copy> </div> </template> <template id="snippet-clipboard-copy-button-unpositioned"> <div class="zeroclipboard-container"> <clipboard-copy aria-label="Copy" class="ClipboardButton btn btn-invisible js-clipboard-copy m-2 p-0 d-flex flex-justify-center flex-items-center" data-copy-feedback="Copied!" data-tooltip-direction="w"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-copy js-clipboard-copy-icon"> <path d="M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 0 1 0 1.5h-1.5a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-1.5a.75.75 0 0 1 1.5 0v1.5A1.75 1.75 0 0 1 9.25 16h-7.5A1.75 1.75 0 0 1 0 14.25Z"></path><path d="M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0 1 14.25 11h-7.5A1.75 1.75 0 0 1 5 9.25Zm1.75-.25a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-7.5a.25.25 0 0 0-.25-.25Z"></path> </svg> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-check js-clipboard-check-icon color-fg-success d-none"> <path d="M13.78 4.22a.75.75 0 0 1 0 1.06l-7.25 7.25a.75.75 0 0 1-1.06 0L2.22 9.28a.751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018L6 10.94l6.72-6.72a.75.75 0 0 1 1.06 0Z"></path> </svg> </clipboard-copy> </div> </template> </div> <div id="js-global-screen-reader-notice" class="sr-only mt-n1" aria-live="polite" aria-atomic="true" ></div> <div id="js-global-screen-reader-notice-assertive" class="sr-only mt-n1" aria-live="assertive" aria-atomic="true"></div> </body> </html>