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GitHub - patois/RETracker: Reverse Engineering Framework for the Polyend Tracker
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6.2525 5.55125C6.2525 5.55125 7.17375 5.2625 9.2775 6.67875C10.1575 6.43125 11.0925 6.3075 12.0275 6.3075C12.9625 6.3075 13.8975 6.43125 14.7775 6.67875C16.8813 5.24875 17.8025 5.55125 17.8025 5.55125C18.4075 7.06375 18.0225 8.19125 17.9125 8.46625C18.6138 9.23625 19.04 10.2125 19.04 11.4225C19.04 15.6437 16.4688 16.5787 14.0213 16.8537C14.42 17.1975 14.7638 17.8575 14.7638 18.8887C14.7638 20.36 14.75 21.5425 14.75 21.9137C14.75 22.2025 14.9563 22.5462 15.5063 22.4362C19.8513 20.9787 23 16.8537 23 12C23 5.9225 18.0775 1 12 1Z"></path> </svg> </a> <div class="flex-1 flex-order-2 text-right"> <a href="/login?return_to=https%3A%2F%2Fgithub.com%2Fpatois%2FRETracker" class="HeaderMenu-link HeaderMenu-button d-inline-flex d-lg-none flex-order-1 f5 no-underline border color-border-default rounded-2 px-2 py-1 color-fg-inherit js-prevent-focus-on-mobile-nav" data-hydro-click="{"event_type":"authentication.click","payload":{"location_in_page":"site header menu","repository_id":null,"auth_type":"SIGN_UP","originating_url":"https://github.com/patois/RETracker","user_id":null}}" data-hydro-click-hmac="32afd5886bb9c4995a87c210e56383a028d04492e1e168bd73570ac6e3db1175" data-analytics-event="{"category":"Marketing nav","action":"click to Sign in","label":"ref_page:Marketing;ref_cta:Sign in;ref_loc:Header"}" > Sign in </a> </div> </div> <div class="HeaderMenu js-header-menu height-fit position-lg-relative d-lg-flex flex-column flex-auto top-0"> <div 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 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class="color-fg-default h4">GitHub Copilot</div> Write better code with AI </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":"github_advanced_security","context":"product","tag":"link","label":"github_advanced_security_link_product_navbar"}" href="https://github.com/security/advanced-security"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" 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" data-analytics-event="{"location":"navbar","action":"actions","context":"product","tag":"link","label":"actions_link_product_navbar"}" href="https://github.com/features/actions"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-workflow color-fg-subtle mr-3"> <path d="M1 3a2 2 0 0 1 2-2h6.5a2 2 0 0 1 2 2v6.5a2 2 0 0 1-2 2H7v4.063C7 16.355 7.644 17 8.438 17H12.5v-2.5a2 2 0 0 1 2-2H21a2 2 0 0 1 2 2V21a2 2 0 0 1-2 2h-6.5a2 2 0 0 1-2-2v-2.5H8.437A2.939 2.939 0 0 1 5.5 15.562V11.5H3a2 2 0 0 1-2-2Zm2-.5a.5.5 0 0 0-.5.5v6.5a.5.5 0 0 0 .5.5h6.5a.5.5 0 0 0 .5-.5V3a.5.5 0 0 0-.5-.5ZM14.5 14a.5.5 0 0 0-.5.5V21a.5.5 0 0 0 .5.5H21a.5.5 0 0 0 .5-.5v-6.5a.5.5 0 0 0-.5-.5Z"></path> </svg> <div> <div class="color-fg-default h4">Actions</div> Automate any workflow </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":"codespaces","context":"product","tag":"link","label":"codespaces_link_product_navbar"}" href="https://github.com/features/codespaces"> <svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-codespaces color-fg-subtle mr-3"> <path d="M3.5 3.75C3.5 2.784 4.284 2 5.25 2h13.5c.966 0 1.75.784 1.75 1.75v7.5A1.75 1.75 0 0 1 18.75 13H5.25a1.75 1.75 0 0 1-1.75-1.75Zm-2 12c0-.966.784-1.75 1.75-1.75h17.5c.966 0 1.75.784 1.75 1.75v4a1.75 1.75 0 0 1-1.75 1.75H3.25a1.75 1.75 0 0 1-1.75-1.75ZM5.25 3.5a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h13.5a.25.25 0 0 0 .25-.25v-7.5a.25.25 0 0 0-.25-.25Zm-2 12a.25.25 0 0 0-.25.25v4c0 .138.112.25.25.25h17.5a.25.25 0 0 0 .25-.25v-4a.25.25 0 0 0-.25-.25Z"></path><path d="M10 17.75a.75.75 0 0 1 .75-.75h6.5a.75.75 0 0 1 0 1.5h-6.5a.75.75 0 0 1-.75-.75Zm-4 0a.75.75 0 0 1 .75-.75h.5a.75.75 0 0 1 0 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" 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2.7 2.908 2.7a.75.75 0 1 1-1.02 1.1l-3.5-3.25a.75.75 0 0 1 0-1.1l3.5-3.25a.75.75 0 0 1 1.06.04Zm3.44 1.06a.75.75 0 1 1 1.02-1.1l3.5 3.25a.75.75 0 0 1 0 1.1l-3.5 3.25a.75.75 0 1 1-1.02-1.1l2.908-2.7-2.908-2.7Z"></path><path d="M1.5 4.25c0-.966.784-1.75 1.75-1.75h17.5c.966 0 1.75.784 1.75 1.75v12.5a1.75 1.75 0 0 1-1.75 1.75h-9.69l-3.573 3.573A1.458 1.458 0 0 1 5 21.043V18.5H3.25a1.75 1.75 0 0 1-1.75-1.75ZM3.25 4a.25.25 0 0 0-.25.25v12.5c0 .138.112.25.25.25h2.5a.75.75 0 0 1 .75.75v3.19l3.72-3.72a.749.749 0 0 1 .53-.22h10a.25.25 0 0 0 .25-.25V4.25a.25.25 0 0 0-.25-.25Z"></path> </svg> <div> <div class="color-fg-default h4">Code Review</div> Manage code changes </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":"discussions","context":"product","tag":"link","label":"discussions_link_product_navbar"}" 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value="PClpvPjtLgKGQIvP/4htprILQjH+IGq7XKP+ZTUxgLxUHNgu3rrsrSOBXf1n9gJppdTO3S2tNbRvFhONBgWcSw==" /> <div data-target="custom-scopes.customScopesModalDialogFlash"></div> <input type="hidden" id="custom_scope_id" name="custom_scope_id" data-target="custom-scopes.customScopesIdField"> <div class="form-group"> <label for="custom_scope_name">Name</label> <auto-check src="/search/custom_scopes/check_name" required only-validate-on-blur="false"> <input type="text" name="custom_scope_name" id="custom_scope_name" data-target="custom-scopes.customScopesNameField" class="form-control" autocomplete="off" placeholder="github-ruby" required maxlength="50"> <input type="hidden" data-csrf="true" value="7mUTr5bS0oofhUas9lwsp3VmTaNTZipbYD92BLHKayF9TVb0G2cnIARqOTLzTyIU5vnOS7zJwo+hlVjwrdaLSw==" /> </auto-check> </div> <div class="form-group"> <label for="custom_scope_query">Query</label> <input type="text" name="custom_scope_query" id="custom_scope_query" data-target="custom-scopes.customScopesQueryField" class="form-control" autocomplete="off" placeholder="(repo:mona/a OR repo:mona/b) AND lang:python" required maxlength="500"> </div> <p class="text-small color-fg-muted"> To see all available qualifiers, see our <a class="Link--inTextBlock" href="https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax">documentation</a>. </p> </form> </div> <div data-target="custom-scopes.manageCustomScopesForm"> <div data-target="custom-scopes.list"></div> </div> </div> </scrollable-region> <div data-view-component="true" class="Overlay-footer Overlay-footer--alignEnd Overlay-footer--divided"> <button data-action="click:custom-scopes#customScopesCancel" type="button" data-view-component="true" class="btn"> Cancel </button> <button form="custom-scopes-dialog-form" data-action="click:custom-scopes#customScopesSubmit" data-target="custom-scopes.customScopesSubmitButton" type="submit" data-view-component="true" class="btn-primary btn"> Create saved search </button> 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11.5Zm10.5-1h-8a1 1 0 0 0-1 1v6.708A2.486 2.486 0 0 1 4.5 9h8ZM5 12.25a.25.25 0 0 1 .25-.25h3.5a.25.25 0 0 1 .25.25v3.25a.25.25 0 0 1-.4.2l-1.45-1.087a.249.249 0 0 0-.3 0L5.4 15.7a.25.25 0 0 1-.4-.2Z"></path> </svg> <span class="author flex-self-stretch" itemprop="author"> <a class="url fn" rel="author" data-hovercard-type="user" data-hovercard-url="/users/patois/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="/patois"> patois </a> </span> <span class="mx-1 flex-self-stretch color-fg-muted">/</span> <strong itemprop="name" class="mr-2 flex-self-stretch"> <a data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame" href="/patois/RETracker">RETracker</a> </strong> <span></span><span class="Label Label--secondary v-align-middle mr-1">Public</span> </div> </div> <div id="repository-details-container" class="flex-shrink-0" data-turbo-replace style="max-width: 70%;"> <ul class="pagehead-actions flex-shrink-0 d-none 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data-hydro-click-hmac="c3fe709da65c4b21c757312c56e2e93e541678f3ad7b2bba3240e287ecd741b7" data-view-component="true" class="btn-sm btn"> <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>Fork <span id="repo-network-counter" data-pjax-replace="true" data-turbo-replace="true" title="23" data-view-component="true" class="Counter">23</span> </a> </li> <li> <div data-view-component="true" class="BtnGroup d-flex"> <a href="/login?return_to=%2Fpatois%2FRETracker" rel="nofollow" data-hydro-click="{"event_type":"authentication.click","payload":{"location_in_page":"star button","repository_id":469638726,"auth_type":"LOG_IN","originating_url":"https://github.com/patois/RETracker","user_id":null}}" data-hydro-click-hmac="d8faf5ce7276e78d32a81c16c3a2397c00d85e91343ccfb3c9a46e30251fa020" aria-label="You must be signed in to star a repository" data-view-component="true" class="tooltipped tooltipped-sw btn-sm btn"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-star v-align-text-bottom d-inline-block 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><span data-view-component="true" class="d-inline"> Star </span> <span id="repo-stars-counter-star" aria-label="110 users starred this repository" data-singular-suffix="user starred this repository" data-plural-suffix="users starred this repository" data-turbo-replace="true" title="110" data-view-component="true" class="Counter js-social-count">110</span> </a></div> </li> </ul> </div> </div> <div id="responsive-meta-container" data-turbo-replace> <div class="d-block d-md-none mb-2 px-3 px-md-4 px-lg-5"> <p class="f4 mb-3 "> Reverse Engineering Framework for the Polyend Tracker </p> <div class="mb-3"> <a class="Link--secondary no-underline mr-3" href="/patois/RETracker/stargazers"> <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-1"> <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> <span class="text-bold">110</span> stars </a> <a class="Link--secondary no-underline mr-3" href="/patois/RETracker/forks"> <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-1"> <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> <span class="text-bold">23</span> forks </a> <a class="Link--secondary no-underline mr-3 d-inline-block" href="/patois/RETracker/branches"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-git-branch mr-1"> <path d="M9.5 3.25a2.25 2.25 0 1 1 3 2.122V6A2.5 2.5 0 0 1 10 8.5H6a1 1 0 0 0-1 1v1.128a2.251 2.251 0 1 1-1.5 0V5.372a2.25 2.25 0 1 1 1.5 0v1.836A2.493 2.493 0 0 1 6 7h4a1 1 0 0 0 1-1v-.628A2.25 2.25 0 0 1 9.5 3.25Zm-6 0a.75.75 0 1 0 1.5 0 .75.75 0 0 0-1.5 0Zm8.25-.75a.75.75 0 1 0 0 1.5.75.75 0 0 0 0-1.5ZM4.25 12a.75.75 0 1 0 0 1.5.75.75 0 0 0 0-1.5Z"></path> </svg> <span>Branches</span> </a> <a class="Link--secondary no-underline d-inline-block" href="/patois/RETracker/tags"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-tag mr-1"> <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> <span>Tags</span> </a> <a class="Link--secondary no-underline d-inline-block" href="/patois/RETracker/activity"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-pulse mr-1"> <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>Activity</span> </a> </div> <div class="d-flex flex-wrap 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dir=\"auto\"\u003eRETracker\u003c/h1\u003e\u003ca id=\"user-content-retracker\" class=\"anchor\" aria-label=\"Permalink: RETracker\" href=\"#retracker\"\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\u003eRETracker\u003c/code\u003e is a reverse engineering framework for the \u003ca href=\"https://polyend.com/tracker/\" rel=\"nofollow\"\u003ePolyend Tracker\u003c/a\u003e written in Python.\nIt is based on unofficial patches that are applied to the vendor's stock firmware.\nThese patches introduce a custom USB handler by replacing the Tracker's existing but unused USB RAWHID handler.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://vimeo.com/688140736\" rel=\"nofollow\"\u003eWatch a video of a text scroller on the Tracker's pads\u003c/a\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ccode\u003eRETracker's\u003c/code\u003e custom USB handler introduces new, non-official features to the \u003ccode\u003ePolyend Tracker\u003c/code\u003e that can be controlled from a computer via USB. One of these new features is a custom and working unidirectional file transfer functionality, since the Polyend Tracker's official file transfer functionality was broken and hence has been \u003ca href=\"https://github.com/polyend/TrackerBetaTesting/releases/tag/1.4.0\"\u003eremoved by Polyend with the introduction of firmware v1.4.0\u003c/a\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003ca target=\"_blank\" rel=\"noopener noreferrer\" href=\"/patois/RETracker/blob/main/rsrc/retracker.png\"\u003e\u003cimg src=\"/patois/RETracker/raw/main/rsrc/retracker.png\" alt=\"RETracker screenshot\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eOnce patched, the firmware's new features comprise the following:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eReading/dumping of memory\u003c/li\u003e\n\u003cli\u003eWriting/patching of memory\u003c/li\u003e\n\u003cli\u003eExecution of custom code/redirection of control flow\u003c/li\u003e\n\u003cli\u003eWriting files to the tracker's SD card\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eThese features are a solid base for adding further functions dynamically to the \u003ccode\u003ePolyend Tracker\u003c/code\u003e, by assembling position-independend code on the host, transferring it to the Tracker and having the new USB handler execute the freshly implanted code. There are a few intial \u003ca href=\"/patois/RETracker/blob/main/polyp\"\u003edemos\u003c/a\u003e available that can be transferred dynamically to the device.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eAdding to that, the memory reading/writing functions allow the USB host to inspect the \u003ccode\u003eTracker's\u003c/code\u003e memory by creating hex-dumps or by disassembling code in ARM or Thumb mode.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eFinally, the new file transfer function allows arbitrary files, such as firmware updates or \u003ccode\u003eNES\u003c/code\u003e roms to be copied to the Tracker, without having to go through the intended process of swapping the SD card between the \u003ccode\u003eTracker\u003c/code\u003e and a computer. Currently the only direction supported is \u003cem\u003efrom\u003c/em\u003e the USB host \u003cem\u003eto\u003c/em\u003e the \u003ccode\u003eTracker's\u003c/code\u003e SD card, however.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eHAPPY HACKING!\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\u003cp dir=\"auto\"\u003eFirst of all, on top of a Python 3 installation, RETracker requires a number of \u003ca href=\"/patois/RETracker/blob/main/DEPENDENCIES.md\"\u003edependencies\u003c/a\u003e to be installed.\nPlease check them out and make sure you have them all installed before you go on.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eOnce all dependencies are installed, a patched firmware can be created by running \u003ca href=\"/patois/RETracker/blob/main/fwtool.py\"\u003efwtool.py\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"# python fwtool.py\nusage: fwtool.py [-h] [-b | -u | -p] infile outfile\n\npositional arguments:\n infile name/path of input file\n outfile name/path of output file\n\noptional arguments:\n -h, --help show this help message and exit\n -b, --build apply RETracker patches to Tracker firmware\n -u, --unpack unpack Tracker firmware (.ptf) to binary format\n -p, --pack create Tracker firmware (.ptf) from binary\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003e# python fwtool.py\nusage: fwtool.py [-h] [-b | -u | -p] infile outfile\n\npositional arguments:\n infile name/path of input file\n outfile name/path of output file\n\noptional arguments:\n -h, --help show this help message and exit\n -b, --build apply RETracker patches to Tracker firmware\n -u, --unpack unpack Tracker firmware (.ptf) to binary format\n -p, --pack create Tracker firmware (.ptf) from binary\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eExample:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"# python fwtool.py -b ..\\PolyendTracker_1.5.0.ptf ..\\PolyendTracker_1.5.0_retracker.ptf\nOpening ..\\PolyendTracker_1.5.0.ptf\nMD5: ce894299bc35996186528364951c901e\nFound 1 patch\nAssembling patch #1\nDescription: \u0026quot;Memory dumping/patching/code execution/file transfer via USB\u0026quot;\nDecoding input file\nApplying patch\nCreating output file: ..\\PolyendTracker_1.5.0_retracker.ptf\nDone\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003e# python fwtool.py -b ..\\PolyendTracker_1.5.0.ptf ..\\PolyendTracker_1.5.0_retracker.ptf\nOpening ..\\PolyendTracker_1.5.0.ptf\nMD5: ce894299bc35996186528364951c901e\nFound 1 patch\nAssembling patch #1\nDescription: \"Memory dumping/patching/code execution/file transfer via USB\"\nDecoding input file\nApplying patch\nCreating output file: ..\\PolyendTracker_1.5.0_retracker.ptf\nDone\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eOnce a firmware is successfully built, it should be copied to the Tracker's \u003ccode\u003e\"/firmware/\"\u003c/code\u003e folder on the root of its SD card.\nThe firmware image's file name must start with \u003ccode\u003ePolyendTracker_\u003c/code\u003e and end with \u003ccode\u003e.ptf\u003c/code\u003e or otherwise, the Tracker won't find it.\nThe firmware flashing procedure is straight forward and doesn't differ from the ordinary process.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eOn the device\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003epress the \u003ccode\u003econfig\u003c/code\u003e button\u003c/li\u003e\n\u003cli\u003ego to the \u003ccode\u003eFirmware\u003c/code\u003e menu\u003c/li\u003e\n\u003cli\u003eenter the \u003ccode\u003eFirmware update\u003c/code\u003e sub menu\u003c/li\u003e\n\u003cli\u003echoose the firmware you would like to flash onto the \u003ccode\u003ePolyend Tracker\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cblockquote\u003e\n\u003cp dir=\"auto\"\u003eACHTUNG!!!\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eIt is expected for the UI to behave differently when flashing a patched firmware.\nThis is probably due to differences in the IntelHex format that \u003ccode\u003efwtool.py\u003c/code\u003e creates, which hasn't been looked into, yet (simply because it still leads to a successfully flashed firmware).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003ePlease patiently wait for the update to finish until the device reboots.\nIn case something still went wrong, please consult the \u003ccode\u003ePolyend Tracker\u003c/code\u003e user manual, which explains the steps on how to enter the \u003ccode\u003eemergency update procedure\u003c/code\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003en.b.: I've gone through numerous failed update procedures during development myself and haven't had a single issue with restoring a good firmware using the \u003ccode\u003eemergency update procedure\u003c/code\u003e.\nHowever, I wouldn't recommend using \u003ccode\u003eRETracker\u003c/code\u003e before having made backups of the Tracker's SD card (projects, samples, ...).\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSupported Firmware Versions\u003c/h2\u003e\u003ca id=\"user-content-supported-firmware-versions\" class=\"anchor\" aria-label=\"Permalink: Supported Firmware Versions\" href=\"#supported-firmware-versions\"\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\"\u003eRETracker currently supports \u003ccode\u003ePolyend Tracker\u003c/code\u003e in firmware version 1.5.0. There exists a private version for firmware 1.6.0 that has not been released to the public since Polyend entirely removed the code that was used to implement the patches for RETracker on firmware 1.5.0, which made porting them over to the 1.6.0 firmware more difficult.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eHow does it work?\u003c/h2\u003e\u003ca id=\"user-content-how-does-it-work\" class=\"anchor\" aria-label=\"Permalink: How does it work?\" href=\"#how-does-it-work\"\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\"\u003ePolyend Tracker firmware images ship in IntelHex format.\n\u003ca href=\"/patois/RETracker/blob/main/fwtool.py\"\u003efwtool.py\u003c/a\u003e converts the firmware to its plain binary format, which holds all the firmware's code and data.\nIt then applies patches to the converted binary according to information found in \u003ca href=\"/patois/RETracker/blob/main/tracker/firmware.py\"\u003etracker/firmware.py\u003c/a\u003e before converting the file back to IntelHex format again.\nFrom there on, the \u003ccode\u003ePolyend Tracker\u003c/code\u003e can be communicated with by plugging it into a USB port of a computer running \u003ca href=\"/patois/RETracker/blob/main/retracker.py\"\u003eretracker.py\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eRETracker Usage\u003c/h2\u003e\u003ca id=\"user-content-retracker-usage\" class=\"anchor\" aria-label=\"Permalink: RETracker Usage\" href=\"#retracker-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\"\u003eThe main workhorse of this project probably is \u003ccode\u003eretracker.py\u003c/code\u003e, which provides a command line interface to the user.\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"# python retracker.py -h\nusage: retracker.py [-h] [-b] [-c] [-r ADDRESS SIZE FILE] [-w ADDRESS DATA] [-x ADDRESS SIZE] [-d ADDRESS SIZE]\n [-a POLYP] [--polypargs POLYPARGS [POLYPARGS ...]] [-e ADDRESS] [-t SRC_FILENAME DST_FILENAME]\n\noptional arguments:\n -h, --help show this help message and exit\n -b break\n -c continue\n -r ADDRESS SIZE FILE, --readmem ADDRESS SIZE FILE\n Save memory to local file\n -w ADDRESS DATA, --writemem ADDRESS DATA\n Write hex-encoded data to memory ADDRESS\n -x ADDRESS SIZE, --hexdump ADDRESS SIZE\n Create hex-dump of memory\n -d ADDRESS SIZE, --disassemble ADDRESS SIZE\n Disassemble code at ADDRESS (ARM/Thumb aware)\n -a POLYP, --assemble POLYP\n Assemble and execute POLYP patchfile\n --polypargs POLYPARGS [POLYPARGS ...]\n Optional arguments that can be passed to a POLYP\n -e ADDRESS, --exec ADDRESS\n Execute code at ADDRESS (ARM/Thumb aware)\n -t SRC_FILENAME DST_FILENAME, --transfer SRC_FILENAME DST_FILENAME\n Transfer SRC_FILENAME to Tracker's DST_FILENAME\n\nExamples:\nDump memory to file: retracker.py -r 70100000 4f0 dump.bin\nWrite data to memory: retracker.py -w 70100000 \u0026quot;41 EC FA414142c0\u0026quot;\nHex-dump: retracker.py -x 0 ffff\nDisassemble: retracker.py -d 3c01 c000\nAssemble and run Polyp: retracker.py -a polyp.scroller --polypargs \u0026quot;hi there!\u0026quot;\nRun code in Thumb mode: retracker.py -e 70100001\nRun code in ARM mode: retracker.py -e 70100000\nTransfer file to Tracker: retracker.py -t PolyendTracker_1.5.0.ptf Firmware/PolyendTracker_cstm.ptf\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003e# python retracker.py -h\nusage: retracker.py [-h] [-b] [-c] [-r ADDRESS SIZE FILE] [-w ADDRESS DATA] [-x ADDRESS SIZE] [-d ADDRESS SIZE]\n [-a POLYP] [--polypargs POLYPARGS [POLYPARGS ...]] [-e ADDRESS] [-t SRC_FILENAME DST_FILENAME]\n\noptional arguments:\n -h, --help show this help message and exit\n -b break\n -c continue\n -r ADDRESS SIZE FILE, --readmem ADDRESS SIZE FILE\n Save memory to local file\n -w ADDRESS DATA, --writemem ADDRESS DATA\n Write hex-encoded data to memory ADDRESS\n -x ADDRESS SIZE, --hexdump ADDRESS SIZE\n Create hex-dump of memory\n -d ADDRESS SIZE, --disassemble ADDRESS SIZE\n Disassemble code at ADDRESS (ARM/Thumb aware)\n -a POLYP, --assemble POLYP\n Assemble and execute POLYP patchfile\n --polypargs POLYPARGS [POLYPARGS ...]\n Optional arguments that can be passed to a POLYP\n -e ADDRESS, --exec ADDRESS\n Execute code at ADDRESS (ARM/Thumb aware)\n -t SRC_FILENAME DST_FILENAME, --transfer SRC_FILENAME DST_FILENAME\n Transfer SRC_FILENAME to Tracker's DST_FILENAME\n\nExamples:\nDump memory to file: retracker.py -r 70100000 4f0 dump.bin\nWrite data to memory: retracker.py -w 70100000 \"41 EC FA414142c0\"\nHex-dump: retracker.py -x 0 ffff\nDisassemble: retracker.py -d 3c01 c000\nAssemble and run Polyp: retracker.py -a polyp.scroller --polypargs \"hi there!\"\nRun code in Thumb mode: retracker.py -e 70100001\nRun code in ARM mode: retracker.py -e 70100000\nTransfer file to Tracker: retracker.py -t PolyendTracker_1.5.0.ptf Firmware/PolyendTracker_cstm.ptf\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eExamples:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"# python retracker.py -d 0002B99d 100\nConnected to Polyend Tracker\nDetected fw patch v0.3.0 on Tracker firmware v1.5.0\n\nDisassembling 0002B99C-0002BA9C in Thumb mode\n\n0x0002B99C: push {r4}\n0x0002B99E: ldr r4, [pc, #0x6c]\n0x0002B9A0: umull ip, r4, r4, r1\n0x0002B9A4: lsrs r4, r4, #3\n0x0002B9A6: add.w r1, r1, r4, lsl #2\n0x0002B9AA: uxtb r1, r1\n0x0002B9AC: cmp r3, #0x1f\n0x0002B9AE: ite ls\n0x0002B9B0: addls r4, r0, r3\n0x0002B9B2: addhi.w r4, r0, #0x1f\n0x0002B9B6: adds r3, r0, r1\n0x0002B9B8: ldrb r4, [r4, #5]\n0x0002B9BA: strb.w r4, [r3, #0xc8]\n0x0002B9BE: cbz r2, #0x2b9e4\n0x0002B9C0: add.w r2, r0, r1, lsr #3\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003e# python retracker.py -d 0002B99d 100\nConnected to Polyend Tracker\nDetected fw patch v0.3.0 on Tracker firmware v1.5.0\n\nDisassembling 0002B99C-0002BA9C in Thumb mode\n\n0x0002B99C: push {r4}\n0x0002B99E: ldr r4, [pc, #0x6c]\n0x0002B9A0: umull ip, r4, r4, r1\n0x0002B9A4: lsrs r4, r4, #3\n0x0002B9A6: add.w r1, r1, r4, lsl #2\n0x0002B9AA: uxtb r1, r1\n0x0002B9AC: cmp r3, #0x1f\n0x0002B9AE: ite ls\n0x0002B9B0: addls r4, r0, r3\n0x0002B9B2: addhi.w r4, r0, #0x1f\n0x0002B9B6: adds r3, r0, r1\n0x0002B9B8: ldrb r4, [r4, #5]\n0x0002B9BA: strb.w r4, [r3, #0xc8]\n0x0002B9BE: cbz r2, #0x2b9e4\n0x0002B9C0: add.w r2, r0, r1, lsr #3\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"# python retracker.py -x 0002B99d 100\nConnected to Polyend Tracker\nDetected fw patch v0.3.0 on Tracker firmware v1.5.0\n\nDumping 0002B99D-0002BA9D\n\n0002b99d b4 1b 4c a4 fb 01 c4 e4 08 01 eb 84 01 c9 b2 1f |..L.............|\n0002b9ad 2b 94 bf c4 18 00 f1 1f 04 43 18 64 79 83 f8 c8 |+........C.dy...|\n0002b9bd 40 8a b1 00 eb d1 02 01 23 92 f8 b6 40 01 f0 07 |@.......#...@...|\n0002b9cd 01 03 fa 01 f1 21 43 82 f8 b6 10 01 23 5d f8 04 |.....!C.....#]..|\n0002b9dd 4b 80 f8 b5 30 70 47 00 eb d1 04 01 22 94 f8 b6 |K...0pG.....\u0026quot;...|\n0002b9ed 30 01 f0 07 01 02 fa 01 f1 23 ea 01 01 84 f8 b6 |0........#......|\n0002b9fd 10 01 23 5d f8 04 4b 80 f8 b5 30 70 47 00 bf ab |..#]..K...0pG...|\n0002ba0d aa aa aa 00 eb 01 0c 8c f8 c8 30 82 b1 00 eb d1 |..........0.....|\n0002ba1d 02 01 23 92 f8 b6 c0 01 f0 07 01 03 fa 01 f1 41 |..#............A|\n0002ba2d ea 0c 01 01 23 82 f8 b6 10 80 f8 b5 30 70 47 00 |....#.......0pG.|\n0002ba3d eb d1 0c 01 22 9c f8 b6 30 01 f0 07 01 02 fa 01 |....\u0026quot;...0.......|\n0002ba4d f1 23 ea 01 01 01 23 8c f8 b6 10 80 f8 b5 30 70 |.#....#.......0p|\n0002ba5d 47 00 bf 0f 49 00 23 30 b5 01 f1 3f 05 1c 46 4f |G...I.#0...?..FO|\n0002ba6d f0 01 0e 01 e0 11 f8 01 3f c2 18 00 eb d3 0c 82 |........?.......|\n0002ba7d f8 c8 40 9c f8 b6 20 03 f0 07 03 0e fa 03 f3 22 |..@... ........\u0026quot;|\n0002ba8d ea 03 03 a9 42 8c f8 b6 30 ec d1 80 f8 b5 e0 30 |....B...0......0|\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003e# python retracker.py -x 0002B99d 100\nConnected to Polyend Tracker\nDetected fw patch v0.3.0 on Tracker firmware v1.5.0\n\nDumping 0002B99D-0002BA9D\n\n0002b99d b4 1b 4c a4 fb 01 c4 e4 08 01 eb 84 01 c9 b2 1f |..L.............|\n0002b9ad 2b 94 bf c4 18 00 f1 1f 04 43 18 64 79 83 f8 c8 |+........C.dy...|\n0002b9bd 40 8a b1 00 eb d1 02 01 23 92 f8 b6 40 01 f0 07 |@.......#...@...|\n0002b9cd 01 03 fa 01 f1 21 43 82 f8 b6 10 01 23 5d f8 04 |.....!C.....#]..|\n0002b9dd 4b 80 f8 b5 30 70 47 00 eb d1 04 01 22 94 f8 b6 |K...0pG.....\"...|\n0002b9ed 30 01 f0 07 01 02 fa 01 f1 23 ea 01 01 84 f8 b6 |0........#......|\n0002b9fd 10 01 23 5d f8 04 4b 80 f8 b5 30 70 47 00 bf ab |..#]..K...0pG...|\n0002ba0d aa aa aa 00 eb 01 0c 8c f8 c8 30 82 b1 00 eb d1 |..........0.....|\n0002ba1d 02 01 23 92 f8 b6 c0 01 f0 07 01 03 fa 01 f1 41 |..#............A|\n0002ba2d ea 0c 01 01 23 82 f8 b6 10 80 f8 b5 30 70 47 00 |....#.......0pG.|\n0002ba3d eb d1 0c 01 22 9c f8 b6 30 01 f0 07 01 02 fa 01 |....\"...0.......|\n0002ba4d f1 23 ea 01 01 01 23 8c f8 b6 10 80 f8 b5 30 70 |.#....#.......0p|\n0002ba5d 47 00 bf 0f 49 00 23 30 b5 01 f1 3f 05 1c 46 4f |G...I.#0...?..FO|\n0002ba6d f0 01 0e 01 e0 11 f8 01 3f c2 18 00 eb d3 0c 82 |........?.......|\n0002ba7d f8 c8 40 9c f8 b6 20 03 f0 07 03 0e fa 03 f3 22 |..@... ........\"|\n0002ba8d ea 03 03 a9 42 8c f8 b6 30 ec d1 80 f8 b5 e0 30 |....B...0......0|\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eWhereas some of the more common command line options allow memory to be written, read and hex-dumped, the more exciting features are probably the \u003ccode\u003e-e\u003c/code\u003e and \u003ccode\u003e-a\u003c/code\u003e options.\nThey allow code to be executed on the device.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ccode\u003e-e\u003c/code\u003e option allows existing firmware code to be branched to directly, or custom code after writing it to the device's memory using the \u003ccode\u003e-w\u003c/code\u003e option.\nThe lowest bit of an \u003ccode\u003eaddress\u003c/code\u003e argument passed to the \u003ccode\u003eretracker.py\u003c/code\u003e command line utility specifies whether or not to use Thumb mode (0: ARM mode, 1: Thumb mode).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ccode\u003e-a\u003c/code\u003e command line argument accepts so called \u003ccode\u003ePolyps\u003c/code\u003e, which are Python modules containing patches for the \u003ccode\u003ePolyend Tracker\u003c/code\u003e in the form of assembly routines and version-specific offsets and data.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eLoading any of these modules using the \u003ccode\u003e-a\u003c/code\u003e command line option causes their assembly routines\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eto be assembled on the fly\u003c/li\u003e\n\u003cli\u003etransferred to the connected device\u003c/li\u003e\n\u003cli\u003eexecuted on the connected device\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eExample:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"# python retracker.py -a polyp.scroller\nConnected to Polyend Tracker\nDetected fw patch v0.3.0 on Tracker firmware v1.5.0\n\nAssembling patch #1\nDescription: \u0026quot;Text scroller on the Tracker's pads\u0026quot;\nTarget address: 70100000\nMode: thumb\nPatching memory\nRunning code...\nDone\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003e# python retracker.py -a polyp.scroller\nConnected to Polyend Tracker\nDetected fw patch v0.3.0 on Tracker firmware v1.5.0\n\nAssembling patch #1\nDescription: \"Text scroller on the Tracker's pads\"\nTarget address: 70100000\nMode: thumb\nPatching memory\nRunning code...\nDone\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThis does not only allow for convenient and sped-up development of custom code and features, it also does not require new firmware to be flashed onto the \u003ccode\u003eTracker\u003c/code\u003e for testing new functionality (but a reboot in the worst case).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003ePlease have a look at the available modules in the \u003ca href=\"/patois/RETracker/blob/main/polyp\"\u003epolyp/\u003c/a\u003e folder, which contains a few initial demos that fade the \u003ccode\u003eTracker's\u003c/code\u003e screen in and out or repurpose its pads as a text-scroller canvas.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eReverse Engineering the Tracker\u003c/h2\u003e\u003ca id=\"user-content-reverse-engineering-the-tracker\" class=\"anchor\" aria-label=\"Permalink: Reverse Engineering the Tracker\" href=\"#reverse-engineering-the-tracker\"\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\u003ePolyend Tracker\u003c/code\u003e is believed to be based on a µc similar to the Teensy 3.6 of which \u003ca href=\"https://www.pjrc.com/store/teensy36.html\" rel=\"nofollow\"\u003edata sheets and other tech info is available here\u003c/a\u003e.\nBe sure to check out the \u003ca href=\"https://www.pjrc.com/teensy/K66P144M180SF5RMV2.pdf\" rel=\"nofollow\"\u003eMK66FX\u003c/a\u003e manual for a memory map in order to avoid running into device crashes when dumping memory.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe \u003ccode\u003eTracker\u003c/code\u003e firmware image is in IntelHex format and can be unpacked using \u003ca href=\"/patois/RETracker/blob/main/fwtool.py\"\u003efwtool.py\u003c/a\u003e or loaded directly by disassemblers supporting the IntelHex format, such as the \u003ca href=\"https://hex-rays.com/ida-pro/ida-disassembler/\" rel=\"nofollow\"\u003eIDA Pro disassembler\u003c/a\u003e and probably others such as \u003ca href=\"https://ghidra-sre.org/\" rel=\"nofollow\"\u003eGHIDRA\u003c/a\u003e or \u003ca href=\"https://binary.ninja/\" rel=\"nofollow\"\u003eBinary Ninja\u003c/a\u003e.\nThe processor module to choose is ARM / little-endian.\nThe firmware should be loaded at address 0. Address/offset 4 is the the reset vector with a pointer to the reset vector handler (start disassembling there).\nMost, if not all of its code runs in Thumb mode.\nI've found address \u003ccode\u003e0x70100000\u003c/code\u003e and above to be a reliable address to plant a \u003ccode\u003ePolyp\u003c/code\u003e into and run its code from there.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eIf you'd like to give firmware development a go, grab a copy of both \u003ca href=\"https://www.pjrc.com/teensy/td_download.html\" rel=\"nofollow\"\u003eArduino and the Teensyduino addon\u003c/a\u003e, build some of the examples and flash the resulting \u003ccode\u003e.hex\u003c/code\u003e files onto the Tracker (be sure to pick \u003ccode\u003eTeensy 3.6\u003c/code\u003e and rename the resulting \u003ccode\u003e.hex\u003c/code\u003e file into something like \u003ccode\u003ePolyendTracker_teensy.ptf\u003c/code\u003e).\nGoing back to an original \u003ccode\u003ePolyend Tracker\u003c/code\u003e firmware will be possible anytime using the Tracker's emergency update procedure, since it resides on a separate chip that isn't affected/overwritten by firmware updates.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003ca target=\"_blank\" rel=\"noopener noreferrer\" href=\"/patois/RETracker/blob/main/rsrc/teensyduino.jpg\"\u003e\u003cimg src=\"/patois/RETracker/raw/main/rsrc/teensyduino.jpg\" alt=\"Teensyduino screenshot\" 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\"\u003eRETracker Wiki\u003c/h2\u003e\u003ca id=\"user-content-retracker-wiki\" class=\"anchor\" aria-label=\"Permalink: RETracker Wiki\" href=\"#retracker-wiki\"\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 RETracker wiki can be found \u003ca href=\"https://github.com/patois/RETracker/wiki\"\u003ehere\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eDiscussions / Forums\u003c/h2\u003e\u003ca id=\"user-content-discussions--forums\" class=\"anchor\" aria-label=\"Permalink: Discussions / Forums\" href=\"#discussions--forums\"\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\"\u003ePlease \u003ca href=\"https://github.com/patois/RETracker/discussions/7\" data-hovercard-type=\"discussion\" data-hovercard-url=\"/patois/RETracker/discussions/7/hovercard\"\u003etake part in discussions\u003c/a\u003e and tell everybody about your experience with RETracker and how you're using it!\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eDisclaimer\u003c/h2\u003e\u003ca id=\"user-content-disclaimer\" class=\"anchor\" aria-label=\"Permalink: Disclaimer\" href=\"#disclaimer\"\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 author does not take any responsibility for any damage this project may cause to your Polyend Tracker.\nBy using RETracker or any information derived, you agree that you are using any of this project's code, data and other information at your own risk.\u003c/p\u003e\n\u003c/article\u003e","loaded":true,"timedOut":false,"errorMessage":null,"headerInfo":{"toc":[{"level":1,"text":"RETracker","anchor":"retracker","htmlText":"RETracker"},{"level":2,"text":"Installation","anchor":"installation","htmlText":"Installation"},{"level":2,"text":"Supported Firmware Versions","anchor":"supported-firmware-versions","htmlText":"Supported Firmware Versions"},{"level":2,"text":"How does it work?","anchor":"how-does-it-work","htmlText":"How does it work?"},{"level":2,"text":"RETracker Usage","anchor":"retracker-usage","htmlText":"RETracker Usage"},{"level":2,"text":"Reverse Engineering the Tracker","anchor":"reverse-engineering-the-tracker","htmlText":"Reverse Engineering the Tracker"},{"level":2,"text":"RETracker Wiki","anchor":"retracker-wiki","htmlText":"RETracker Wiki"},{"level":2,"text":"Discussions / Forums","anchor":"discussions--forums","htmlText":"Discussions / Forums"},{"level":2,"text":"Disclaimer","anchor":"disclaimer","htmlText":"Disclaimer"}],"siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Fpatois%2FRETracker"}}],"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 data-target="react-partial.reactRoot"><style 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fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="m11.28 3.22 4.25 4.25a.75.75 0 0 1 0 1.06l-4.25 4.25a.749.749 0 0 1-1.275-.326.749.749 0 0 1 .215-.734L13.94 8l-3.72-3.72a.749.749 0 0 1 .326-1.275.749.749 0 0 1 .734.215Zm-6.56 0a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042L2.06 8l3.72 3.72a.749.749 0 0 1-.326 1.275.749.749 0 0 1-.734-.215L.47 8.53a.75.75 0 0 1 0-1.06Z"></path></svg></span><span data-component="text" class="prc-Button-Label-pTQ3x">Code</span><span data-component="trailingVisual" class="prc-Button-Visual-2epfX prc-Button-VisualWrap-Db-eB"><svg aria-hidden="true" focusable="false" class="octicon octicon-triangle-down" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="m4.427 7.427 3.396 3.396a.25.25 0 0 0 .354 0l3.396-3.396A.25.25 0 0 0 11.396 7H4.604a.25.25 0 0 0-.177.427Z"></path></svg></span></span></button><div class="Box-sc-g0xbh4-0 izFOf"><button data-component="IconButton" type="button" aria-label="Open more actions menu" aria-haspopup="true" aria-expanded="false" tabindex="0" class="prc-Button-ButtonBase-c50BI prc-Button-IconButton-szpyj" data-loading="false" data-no-visuals="true" data-size="medium" data-variant="default" aria-describedby=":R75ab:-loading-announcement" id=":R75ab:"><svg aria-hidden="true" focusable="false" class="octicon octicon-kebab-horizontal" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="M8 9a1.5 1.5 0 1 0 0-3 1.5 1.5 0 0 0 0 3ZM1.5 9a1.5 1.5 0 1 0 0-3 1.5 1.5 0 0 0 0 3Zm13 0a1.5 1.5 0 1 0 0-3 1.5 1.5 0 0 0 0 3Z"></path></svg></button></div></div></div><div class="Box-sc-g0xbh4-0 vIPPs"><div data-hpc="true"><button hidden="" data-testid="focus-next-element-button" data-hotkey="j"></button><button hidden="" data-testid="focus-previous-element-button" 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="/patois/RETracker/commits/main/" 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">33 Commits</span></span></span></a><div class="d-sm-none"></div><div class="d-flex d-lg-none"><span role="tooltip" aria-label="33 Commits" id="history-icon-button-tooltip" class="Tooltip__TooltipBase-sc-17tf59c-0 hWlpPn tooltipped-n"><a href="/patois/RETracker/commits/main/" class="prc-Button-ButtonBase-c50BI LinkButton-module__code-view-link-button--xvCGA flex-items-center fgColor-default" data-loading="false" data-size="small" data-variant="invisible" aria-describedby=":R1iqj8pab:-loading-announcement history-icon-button-tooltip"><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></a></span></div></div></div></div></td></tr><tr class="react-directory-row undefined" id="folder-row-0"><td class="react-directory-row-name-cell-small-screen" colSpan="2"><div class="react-directory-filename-column"><svg aria-hidden="true" focusable="false" class="octicon octicon-file-directory-fill icon-directory" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="M1.75 1A1.75 1.75 0 0 0 0 2.75v10.5C0 14.216.784 15 1.75 15h12.5A1.75 1.75 0 0 0 16 13.25v-8.5A1.75 1.75 0 0 0 14.25 3H7.5a.25.25 0 0 1-.2-.1l-.9-1.2C6.07 1.26 5.55 1 5 1H1.75Z"></path></svg><div class="overflow-hidden"><div class="react-directory-filename-cell"><div class="react-directory-truncate"><a title="polyp" aria-label="polyp, (Directory)" class="Link--primary" href="/patois/RETracker/tree/main/polyp">polyp</a></div></div></div></div></td><td class="react-directory-row-name-cell-large-screen" colSpan="1"><div class="react-directory-filename-column"><svg aria-hidden="true" focusable="false" class="octicon octicon-file-directory-fill icon-directory" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="M1.75 1A1.75 1.75 0 0 0 0 2.75v10.5C0 14.216.784 15 1.75 15h12.5A1.75 1.75 0 0 0 16 13.25v-8.5A1.75 1.75 0 0 0 14.25 3H7.5a.25.25 0 0 1-.2-.1l-.9-1.2C6.07 1.26 5.55 1 5 1H1.75Z"></path></svg><div class="overflow-hidden"><div class="react-directory-filename-cell"><div class="react-directory-truncate"><a title="polyp" aria-label="polyp, (Directory)" class="Link--primary" href="/patois/RETracker/tree/main/polyp">polyp</a></div></div></div></div></td><td class="react-directory-row-commit-cell"><div class="Skeleton Skeleton--text"> </div></td><td><div class="Skeleton Skeleton--text"> </div></td></tr><tr class="react-directory-row undefined" id="folder-row-1"><td class="react-directory-row-name-cell-small-screen" colSpan="2"><div class="react-directory-filename-column"><svg aria-hidden="true" focusable="false" class="octicon octicon-file-directory-fill icon-directory" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="M1.75 1A1.75 1.75 0 0 0 0 2.75v10.5C0 14.216.784 15 1.75 15h12.5A1.75 1.75 0 0 0 16 13.25v-8.5A1.75 1.75 0 0 0 14.25 3H7.5a.25.25 0 0 1-.2-.1l-.9-1.2C6.07 1.26 5.55 1 5 1H1.75Z"></path></svg><div class="overflow-hidden"><div class="react-directory-filename-cell"><div class="react-directory-truncate"><a title="rsrc" aria-label="rsrc, (Directory)" class="Link--primary" href="/patois/RETracker/tree/main/rsrc">rsrc</a></div></div></div></div></td><td class="react-directory-row-name-cell-large-screen" colSpan="1"><div class="react-directory-filename-column"><svg aria-hidden="true" focusable="false" class="octicon octicon-file-directory-fill icon-directory" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="M1.75 1A1.75 1.75 0 0 0 0 2.75v10.5C0 14.216.784 15 1.75 15h12.5A1.75 1.75 0 0 0 16 13.25v-8.5A1.75 1.75 0 0 0 14.25 3H7.5a.25.25 0 0 1-.2-.1l-.9-1.2C6.07 1.26 5.55 1 5 1H1.75Z"></path></svg><div class="overflow-hidden"><div class="react-directory-filename-cell"><div class="react-directory-truncate"><a title="rsrc" aria-label="rsrc, (Directory)" class="Link--primary" href="/patois/RETracker/tree/main/rsrc">rsrc</a></div></div></div></div></td><td class="react-directory-row-commit-cell"><div class="Skeleton Skeleton--text"> </div></td><td><div class="Skeleton Skeleton--text"> </div></td></tr><tr class="react-directory-row undefined" id="folder-row-2"><td class="react-directory-row-name-cell-small-screen" colSpan="2"><div class="react-directory-filename-column"><svg aria-hidden="true" focusable="false" class="octicon octicon-file-directory-fill icon-directory" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="M1.75 1A1.75 1.75 0 0 0 0 2.75v10.5C0 14.216.784 15 1.75 15h12.5A1.75 1.75 0 0 0 16 13.25v-8.5A1.75 1.75 0 0 0 14.25 3H7.5a.25.25 0 0 1-.2-.1l-.9-1.2C6.07 1.26 5.55 1 5 1H1.75Z"></path></svg><div class="overflow-hidden"><div class="react-directory-filename-cell"><div class="react-directory-truncate"><a title="tools" aria-label="tools, (Directory)" class="Link--primary" href="/patois/RETracker/tree/main/tools">tools</a></div></div></div></div></td><td class="react-directory-row-name-cell-large-screen" colSpan="1"><div class="react-directory-filename-column"><svg aria-hidden="true" focusable="false" class="octicon octicon-file-directory-fill icon-directory" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="M1.75 1A1.75 1.75 0 0 0 0 2.75v10.5C0 14.216.784 15 1.75 15h12.5A1.75 1.75 0 0 0 16 13.25v-8.5A1.75 1.75 0 0 0 14.25 3H7.5a.25.25 0 0 1-.2-.1l-.9-1.2C6.07 1.26 5.55 1 5 1H1.75Z"></path></svg><div class="overflow-hidden"><div class="react-directory-filename-cell"><div class="react-directory-truncate"><a title="tools" aria-label="tools, (Directory)" class="Link--primary" href="/patois/RETracker/tree/main/tools">tools</a></div></div></div></div></td><td class="react-directory-row-commit-cell"><div class="Skeleton Skeleton--text"> </div></td><td><div class="Skeleton Skeleton--text"> </div></td></tr><tr class="react-directory-row undefined" id="folder-row-3"><td class="react-directory-row-name-cell-small-screen" colSpan="2"><div class="react-directory-filename-column"><svg aria-hidden="true" focusable="false" class="octicon octicon-file-directory-fill icon-directory" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="M1.75 1A1.75 1.75 0 0 0 0 2.75v10.5C0 14.216.784 15 1.75 15h12.5A1.75 1.75 0 0 0 16 13.25v-8.5A1.75 1.75 0 0 0 14.25 3H7.5a.25.25 0 0 1-.2-.1l-.9-1.2C6.07 1.26 5.55 1 5 1H1.75Z"></path></svg><div class="overflow-hidden"><div class="react-directory-filename-cell"><div class="react-directory-truncate"><a title="tracker" aria-label="tracker, (Directory)" class="Link--primary" href="/patois/RETracker/tree/main/tracker">tracker</a></div></div></div></div></td><td class="react-directory-row-name-cell-large-screen" colSpan="1"><div class="react-directory-filename-column"><svg aria-hidden="true" focusable="false" class="octicon octicon-file-directory-fill icon-directory" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="M1.75 1A1.75 1.75 0 0 0 0 2.75v10.5C0 14.216.784 15 1.75 15h12.5A1.75 1.75 0 0 0 16 13.25v-8.5A1.75 1.75 0 0 0 14.25 3H7.5a.25.25 0 0 1-.2-.1l-.9-1.2C6.07 1.26 5.55 1 5 1H1.75Z"></path></svg><div class="overflow-hidden"><div class="react-directory-filename-cell"><div class="react-directory-truncate"><a title="tracker" aria-label="tracker, (Directory)" class="Link--primary" href="/patois/RETracker/tree/main/tracker">tracker</a></div></div></div></div></td><td class="react-directory-row-commit-cell"><div class="Skeleton Skeleton--text"> </div></td><td><div class="Skeleton Skeleton--text"> </div></td></tr><tr class="react-directory-row undefined" id="folder-row-4"><td class="react-directory-row-name-cell-small-screen" colSpan="2"><div class="react-directory-filename-column"><svg aria-hidden="true" focusable="false" class="octicon octicon-file color-fg-muted" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="M2 1.75C2 .784 2.784 0 3.75 0h6.586c.464 0 .909.184 1.237.513l2.914 2.914c.329.328.513.773.513 1.237v9.586A1.75 1.75 0 0 1 13.25 16h-9.5A1.75 1.75 0 0 1 2 14.25Zm1.75-.25a.25.25 0 0 0-.25.25v12.5c0 .138.112.25.25.25h9.5a.25.25 0 0 0 .25-.25V6h-2.75A1.75 1.75 0 0 1 9 4.25V1.5Zm6.75.062V4.25c0 .138.112.25.25.25h2.688l-.011-.013-2.914-2.914-.013-.011Z"></path></svg><div class="overflow-hidden"><div class="react-directory-filename-cell"><div class="react-directory-truncate"><a title="DEPENDENCIES.md" aria-label="DEPENDENCIES.md, (File)" class="Link--primary" href="/patois/RETracker/blob/main/DEPENDENCIES.md">DEPENDENCIES.md</a></div></div></div></div></td><td class="react-directory-row-name-cell-large-screen" colSpan="1"><div class="react-directory-filename-column"><svg aria-hidden="true" focusable="false" class="octicon octicon-file color-fg-muted" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="M2 1.75C2 .784 2.784 0 3.75 0h6.586c.464 0 .909.184 1.237.513l2.914 2.914c.329.328.513.773.513 1.237v9.586A1.75 1.75 0 0 1 13.25 16h-9.5A1.75 1.75 0 0 1 2 14.25Zm1.75-.25a.25.25 0 0 0-.25.25v12.5c0 .138.112.25.25.25h9.5a.25.25 0 0 0 .25-.25V6h-2.75A1.75 1.75 0 0 1 9 4.25V1.5Zm6.75.062V4.25c0 .138.112.25.25.25h2.688l-.011-.013-2.914-2.914-.013-.011Z"></path></svg><div class="overflow-hidden"><div class="react-directory-filename-cell"><div class="react-directory-truncate"><a title="DEPENDENCIES.md" aria-label="DEPENDENCIES.md, (File)" class="Link--primary" href="/patois/RETracker/blob/main/DEPENDENCIES.md">DEPENDENCIES.md</a></div></div></div></div></td><td class="react-directory-row-commit-cell"><div class="Skeleton Skeleton--text"> </div></td><td><div class="Skeleton Skeleton--text"> </div></td></tr><tr class="react-directory-row undefined" id="folder-row-5"><td class="react-directory-row-name-cell-small-screen" colSpan="2"><div class="react-directory-filename-column"><svg aria-hidden="true" focusable="false" class="octicon octicon-file color-fg-muted" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="M2 1.75C2 .784 2.784 0 3.75 0h6.586c.464 0 .909.184 1.237.513l2.914 2.914c.329.328.513.773.513 1.237v9.586A1.75 1.75 0 0 1 13.25 16h-9.5A1.75 1.75 0 0 1 2 14.25Zm1.75-.25a.25.25 0 0 0-.25.25v12.5c0 .138.112.25.25.25h9.5a.25.25 0 0 0 .25-.25V6h-2.75A1.75 1.75 0 0 1 9 4.25V1.5Zm6.75.062V4.25c0 .138.112.25.25.25h2.688l-.011-.013-2.914-2.914-.013-.011Z"></path></svg><div class="overflow-hidden"><div class="react-directory-filename-cell"><div class="react-directory-truncate"><a title="README.md" aria-label="README.md, (File)" class="Link--primary" href="/patois/RETracker/blob/main/README.md">README.md</a></div></div></div></div></td><td class="react-directory-row-name-cell-large-screen" colSpan="1"><div class="react-directory-filename-column"><svg aria-hidden="true" focusable="false" class="octicon octicon-file color-fg-muted" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="M2 1.75C2 .784 2.784 0 3.75 0h6.586c.464 0 .909.184 1.237.513l2.914 2.914c.329.328.513.773.513 1.237v9.586A1.75 1.75 0 0 1 13.25 16h-9.5A1.75 1.75 0 0 1 2 14.25Zm1.75-.25a.25.25 0 0 0-.25.25v12.5c0 .138.112.25.25.25h9.5a.25.25 0 0 0 .25-.25V6h-2.75A1.75 1.75 0 0 1 9 4.25V1.5Zm6.75.062V4.25c0 .138.112.25.25.25h2.688l-.011-.013-2.914-2.914-.013-.011Z"></path></svg><div class="overflow-hidden"><div class="react-directory-filename-cell"><div class="react-directory-truncate"><a title="README.md" aria-label="README.md, (File)" class="Link--primary" href="/patois/RETracker/blob/main/README.md">README.md</a></div></div></div></div></td><td class="react-directory-row-commit-cell"><div class="Skeleton Skeleton--text"> </div></td><td><div class="Skeleton Skeleton--text"> </div></td></tr><tr class="react-directory-row undefined" id="folder-row-6"><td 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class="react-directory-row-name-cell-large-screen" colSpan="1"><div class="react-directory-filename-column"><svg aria-hidden="true" focusable="false" class="octicon octicon-file color-fg-muted" viewBox="0 0 16 16" width="16" height="16" fill="currentColor" display="inline-block" overflow="visible" style="vertical-align:text-bottom"><path d="M2 1.75C2 .784 2.784 0 3.75 0h6.586c.464 0 .909.184 1.237.513l2.914 2.914c.329.328.513.773.513 1.237v9.586A1.75 1.75 0 0 1 13.25 16h-9.5A1.75 1.75 0 0 1 2 14.25Zm1.75-.25a.25.25 0 0 0-.25.25v12.5c0 .138.112.25.25.25h9.5a.25.25 0 0 0 .25-.25V6h-2.75A1.75 1.75 0 0 1 9 4.25V1.5Zm6.75.062V4.25c0 .138.112.25.25.25h2.688l-.011-.013-2.914-2.914-.013-.011Z"></path></svg><div class="overflow-hidden"><div class="react-directory-filename-cell"><div class="react-directory-truncate"><a title="fwtool.py" aria-label="fwtool.py, (File)" class="Link--primary" href="/patois/RETracker/blob/main/fwtool.py">fwtool.py</a></div></div></div></div></td><td 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dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">RETracker</h1><a id="user-content-retracker" class="anchor" aria-label="Permalink: RETracker" href="#retracker"><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>RETracker</code> is a reverse engineering framework for the <a href="https://polyend.com/tracker/" rel="nofollow">Polyend Tracker</a> written in Python. It is based on unofficial patches that are applied to the vendor's stock firmware. These patches introduce a custom USB handler by replacing the Tracker's existing but unused USB RAWHID handler.</p> <p dir="auto"><a href="https://vimeo.com/688140736" rel="nofollow">Watch a video of a text scroller on the Tracker's pads</a></p> <p dir="auto">The <code>RETracker's</code> custom USB handler introduces new, non-official features to the <code>Polyend Tracker</code> that can be controlled from a computer via USB. One of these new features is a custom and working unidirectional file transfer functionality, since the Polyend Tracker's official file transfer functionality was broken and hence has been <a href="https://github.com/polyend/TrackerBetaTesting/releases/tag/1.4.0">removed by Polyend with the introduction of firmware v1.4.0</a>.</p> <p dir="auto"><a target="_blank" rel="noopener noreferrer" href="/patois/RETracker/blob/main/rsrc/retracker.png"><img src="/patois/RETracker/raw/main/rsrc/retracker.png" alt="RETracker screenshot" style="max-width: 100%;"></a></p> <p dir="auto">Once patched, the firmware's new features comprise the following:</p> <ul dir="auto"> <li>Reading/dumping of memory</li> <li>Writing/patching of memory</li> <li>Execution of custom code/redirection of control flow</li> <li>Writing files to the tracker's SD card</li> </ul> <p dir="auto">These features are a solid base for adding further functions dynamically to the <code>Polyend Tracker</code>, by assembling position-independend code on the host, transferring it to the Tracker and having the new USB handler execute the freshly implanted code. There are a few intial <a href="/patois/RETracker/blob/main/polyp">demos</a> available that can be transferred dynamically to the device.</p> <p dir="auto">Adding to that, the memory reading/writing functions allow the USB host to inspect the <code>Tracker's</code> memory by creating hex-dumps or by disassembling code in ARM or Thumb mode.</p> <p dir="auto">Finally, the new file transfer function allows arbitrary files, such as firmware updates or <code>NES</code> roms to be copied to the Tracker, without having to go through the intended process of swapping the SD card between the <code>Tracker</code> and a computer. Currently the only direction supported is <em>from</em> the USB host <em>to</em> the <code>Tracker's</code> SD card, however.</p> <p dir="auto">HAPPY HACKING!</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> <p dir="auto">First of all, on top of a Python 3 installation, RETracker requires a number of <a href="/patois/RETracker/blob/main/DEPENDENCIES.md">dependencies</a> to be installed. Please check them out and make sure you have them all installed before you go on.</p> <p dir="auto">Once all dependencies are installed, a patched firmware can be created by running <a href="/patois/RETracker/blob/main/fwtool.py">fwtool.py</a>.</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="# python fwtool.py usage: fwtool.py [-h] [-b | -u | -p] infile outfile positional arguments: infile name/path of input file outfile name/path of output file optional arguments: -h, --help show this help message and exit -b, --build apply RETracker patches to Tracker firmware -u, --unpack unpack Tracker firmware (.ptf) to binary format -p, --pack create Tracker firmware (.ptf) from binary"><pre class="notranslate"><code># python fwtool.py usage: fwtool.py [-h] [-b | -u | -p] infile outfile positional arguments: infile name/path of input file outfile name/path of output file optional arguments: -h, --help show this help message and exit -b, --build apply RETracker patches to Tracker firmware -u, --unpack unpack Tracker firmware (.ptf) to binary format -p, --pack create Tracker firmware (.ptf) from binary </code></pre></div> <p dir="auto">Example:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="# python fwtool.py -b ..\PolyendTracker_1.5.0.ptf ..\PolyendTracker_1.5.0_retracker.ptf Opening ..\PolyendTracker_1.5.0.ptf MD5: ce894299bc35996186528364951c901e Found 1 patch Assembling patch #1 Description: "Memory dumping/patching/code execution/file transfer via USB" Decoding input file Applying patch Creating output file: ..\PolyendTracker_1.5.0_retracker.ptf Done"><pre class="notranslate"><code># python fwtool.py -b ..\PolyendTracker_1.5.0.ptf ..\PolyendTracker_1.5.0_retracker.ptf Opening ..\PolyendTracker_1.5.0.ptf MD5: ce894299bc35996186528364951c901e Found 1 patch Assembling patch #1 Description: "Memory dumping/patching/code execution/file transfer via USB" Decoding input file Applying patch Creating output file: ..\PolyendTracker_1.5.0_retracker.ptf Done </code></pre></div> <p dir="auto">Once a firmware is successfully built, it should be copied to the Tracker's <code>"/firmware/"</code> folder on the root of its SD card. The firmware image's file name must start with <code>PolyendTracker_</code> and end with <code>.ptf</code> or otherwise, the Tracker won't find it. The firmware flashing procedure is straight forward and doesn't differ from the ordinary process.</p> <p dir="auto">On the device</p> <ul dir="auto"> <li>press the <code>config</code> button</li> <li>go to the <code>Firmware</code> menu</li> <li>enter the <code>Firmware update</code> sub menu</li> <li>choose the firmware you would like to flash onto the <code>Polyend Tracker</code></li> </ul> <blockquote> <p dir="auto">ACHTUNG!!!</p> <p dir="auto">It is expected for the UI to behave differently when flashing a patched firmware. This is probably due to differences in the IntelHex format that <code>fwtool.py</code> creates, which hasn't been looked into, yet (simply because it still leads to a successfully flashed firmware).</p> <p dir="auto">Please patiently wait for the update to finish until the device reboots. In case something still went wrong, please consult the <code>Polyend Tracker</code> user manual, which explains the steps on how to enter the <code>emergency update procedure</code>.</p> <p dir="auto">n.b.: I've gone through numerous failed update procedures during development myself and haven't had a single issue with restoring a good firmware using the <code>emergency update procedure</code>. However, I wouldn't recommend using <code>RETracker</code> before having made backups of the Tracker's SD card (projects, samples, ...).</p> </blockquote> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Supported Firmware Versions</h2><a id="user-content-supported-firmware-versions" class="anchor" aria-label="Permalink: Supported Firmware Versions" href="#supported-firmware-versions"><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">RETracker currently supports <code>Polyend Tracker</code> in firmware version 1.5.0. There exists a private version for firmware 1.6.0 that has not been released to the public since Polyend entirely removed the code that was used to implement the patches for RETracker on firmware 1.5.0, which made porting them over to the 1.6.0 firmware more difficult.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">How does it work?</h2><a id="user-content-how-does-it-work" class="anchor" aria-label="Permalink: How does it work?" href="#how-does-it-work"><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">Polyend Tracker firmware images ship in IntelHex format. <a href="/patois/RETracker/blob/main/fwtool.py">fwtool.py</a> converts the firmware to its plain binary format, which holds all the firmware's code and data. It then applies patches to the converted binary according to information found in <a href="/patois/RETracker/blob/main/tracker/firmware.py">tracker/firmware.py</a> before converting the file back to IntelHex format again. From there on, the <code>Polyend Tracker</code> can be communicated with by plugging it into a USB port of a computer running <a href="/patois/RETracker/blob/main/retracker.py">retracker.py</a>.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">RETracker Usage</h2><a id="user-content-retracker-usage" class="anchor" aria-label="Permalink: RETracker Usage" href="#retracker-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">The main workhorse of this project probably is <code>retracker.py</code>, which provides a command line interface to the user.</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="# python retracker.py -h usage: retracker.py [-h] [-b] [-c] [-r ADDRESS SIZE FILE] [-w ADDRESS DATA] [-x ADDRESS SIZE] [-d ADDRESS SIZE] [-a POLYP] [--polypargs POLYPARGS [POLYPARGS ...]] [-e ADDRESS] [-t SRC_FILENAME DST_FILENAME] optional arguments: -h, --help show this help message and exit -b break -c continue -r ADDRESS SIZE FILE, --readmem ADDRESS SIZE FILE Save memory to local file -w ADDRESS DATA, --writemem ADDRESS DATA Write hex-encoded data to memory ADDRESS -x ADDRESS SIZE, --hexdump ADDRESS SIZE Create hex-dump of memory -d ADDRESS SIZE, --disassemble ADDRESS SIZE Disassemble code at ADDRESS (ARM/Thumb aware) -a POLYP, --assemble POLYP Assemble and execute POLYP patchfile --polypargs POLYPARGS [POLYPARGS ...] Optional arguments that can be passed to a POLYP -e ADDRESS, --exec ADDRESS Execute code at ADDRESS (ARM/Thumb aware) -t SRC_FILENAME DST_FILENAME, --transfer SRC_FILENAME DST_FILENAME Transfer SRC_FILENAME to Tracker's DST_FILENAME Examples: Dump memory to file: retracker.py -r 70100000 4f0 dump.bin Write data to memory: retracker.py -w 70100000 "41 EC FA414142c0" Hex-dump: retracker.py -x 0 ffff Disassemble: retracker.py -d 3c01 c000 Assemble and run Polyp: retracker.py -a polyp.scroller --polypargs "hi there!" Run code in Thumb mode: retracker.py -e 70100001 Run code in ARM mode: retracker.py -e 70100000 Transfer file to Tracker: retracker.py -t PolyendTracker_1.5.0.ptf Firmware/PolyendTracker_cstm.ptf"><pre class="notranslate"><code># python retracker.py -h usage: retracker.py [-h] [-b] [-c] [-r ADDRESS SIZE FILE] [-w ADDRESS DATA] [-x ADDRESS SIZE] [-d ADDRESS SIZE] [-a POLYP] [--polypargs POLYPARGS [POLYPARGS ...]] [-e ADDRESS] [-t SRC_FILENAME DST_FILENAME] optional arguments: -h, --help show this help message and exit -b break -c continue -r ADDRESS SIZE FILE, --readmem ADDRESS SIZE FILE Save memory to local file -w ADDRESS DATA, --writemem ADDRESS DATA Write hex-encoded data to memory ADDRESS -x ADDRESS SIZE, --hexdump ADDRESS SIZE Create hex-dump of memory -d ADDRESS SIZE, --disassemble ADDRESS SIZE Disassemble code at ADDRESS (ARM/Thumb aware) -a POLYP, --assemble POLYP Assemble and execute POLYP patchfile --polypargs POLYPARGS [POLYPARGS ...] Optional arguments that can be passed to a POLYP -e ADDRESS, --exec ADDRESS Execute code at ADDRESS (ARM/Thumb aware) -t SRC_FILENAME DST_FILENAME, --transfer SRC_FILENAME DST_FILENAME Transfer SRC_FILENAME to Tracker's DST_FILENAME Examples: Dump memory to file: retracker.py -r 70100000 4f0 dump.bin Write data to memory: retracker.py -w 70100000 "41 EC FA414142c0" Hex-dump: retracker.py -x 0 ffff Disassemble: retracker.py -d 3c01 c000 Assemble and run Polyp: retracker.py -a polyp.scroller --polypargs "hi there!" Run code in Thumb mode: retracker.py -e 70100001 Run code in ARM mode: retracker.py -e 70100000 Transfer file to Tracker: retracker.py -t PolyendTracker_1.5.0.ptf Firmware/PolyendTracker_cstm.ptf </code></pre></div> <p dir="auto">Examples:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="# python retracker.py -d 0002B99d 100 Connected to Polyend Tracker Detected fw patch v0.3.0 on Tracker firmware v1.5.0 Disassembling 0002B99C-0002BA9C in Thumb mode 0x0002B99C: push {r4} 0x0002B99E: ldr r4, [pc, #0x6c] 0x0002B9A0: umull ip, r4, r4, r1 0x0002B9A4: lsrs r4, r4, #3 0x0002B9A6: add.w r1, r1, r4, lsl #2 0x0002B9AA: uxtb r1, r1 0x0002B9AC: cmp r3, #0x1f 0x0002B9AE: ite ls 0x0002B9B0: addls r4, r0, r3 0x0002B9B2: addhi.w r4, r0, #0x1f 0x0002B9B6: adds r3, r0, r1 0x0002B9B8: ldrb r4, [r4, #5] 0x0002B9BA: strb.w r4, [r3, #0xc8] 0x0002B9BE: cbz r2, #0x2b9e4 0x0002B9C0: add.w r2, r0, r1, lsr #3"><pre class="notranslate"><code># python retracker.py -d 0002B99d 100 Connected to Polyend Tracker Detected fw patch v0.3.0 on Tracker firmware v1.5.0 Disassembling 0002B99C-0002BA9C in Thumb mode 0x0002B99C: push {r4} 0x0002B99E: ldr r4, [pc, #0x6c] 0x0002B9A0: umull ip, r4, r4, r1 0x0002B9A4: lsrs r4, r4, #3 0x0002B9A6: add.w r1, r1, r4, lsl #2 0x0002B9AA: uxtb r1, r1 0x0002B9AC: cmp r3, #0x1f 0x0002B9AE: ite ls 0x0002B9B0: addls r4, r0, r3 0x0002B9B2: addhi.w r4, r0, #0x1f 0x0002B9B6: adds r3, r0, r1 0x0002B9B8: ldrb r4, [r4, #5] 0x0002B9BA: strb.w r4, [r3, #0xc8] 0x0002B9BE: cbz r2, #0x2b9e4 0x0002B9C0: add.w r2, r0, r1, lsr #3 </code></pre></div> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="# python retracker.py -x 0002B99d 100 Connected to Polyend Tracker Detected fw patch v0.3.0 on Tracker firmware v1.5.0 Dumping 0002B99D-0002BA9D 0002b99d b4 1b 4c a4 fb 01 c4 e4 08 01 eb 84 01 c9 b2 1f |..L.............| 0002b9ad 2b 94 bf c4 18 00 f1 1f 04 43 18 64 79 83 f8 c8 |+........C.dy...| 0002b9bd 40 8a b1 00 eb d1 02 01 23 92 f8 b6 40 01 f0 07 |@.......#...@...| 0002b9cd 01 03 fa 01 f1 21 43 82 f8 b6 10 01 23 5d f8 04 |.....!C.....#]..| 0002b9dd 4b 80 f8 b5 30 70 47 00 eb d1 04 01 22 94 f8 b6 |K...0pG....."...| 0002b9ed 30 01 f0 07 01 02 fa 01 f1 23 ea 01 01 84 f8 b6 |0........#......| 0002b9fd 10 01 23 5d f8 04 4b 80 f8 b5 30 70 47 00 bf ab |..#]..K...0pG...| 0002ba0d aa aa aa 00 eb 01 0c 8c f8 c8 30 82 b1 00 eb d1 |..........0.....| 0002ba1d 02 01 23 92 f8 b6 c0 01 f0 07 01 03 fa 01 f1 41 |..#............A| 0002ba2d ea 0c 01 01 23 82 f8 b6 10 80 f8 b5 30 70 47 00 |....#.......0pG.| 0002ba3d eb d1 0c 01 22 9c f8 b6 30 01 f0 07 01 02 fa 01 |...."...0.......| 0002ba4d f1 23 ea 01 01 01 23 8c f8 b6 10 80 f8 b5 30 70 |.#....#.......0p| 0002ba5d 47 00 bf 0f 49 00 23 30 b5 01 f1 3f 05 1c 46 4f |G...I.#0...?..FO| 0002ba6d f0 01 0e 01 e0 11 f8 01 3f c2 18 00 eb d3 0c 82 |........?.......| 0002ba7d f8 c8 40 9c f8 b6 20 03 f0 07 03 0e fa 03 f3 22 |..@... ........"| 0002ba8d ea 03 03 a9 42 8c f8 b6 30 ec d1 80 f8 b5 e0 30 |....B...0......0|"><pre class="notranslate"><code># python retracker.py -x 0002B99d 100 Connected to Polyend Tracker Detected fw patch v0.3.0 on Tracker firmware v1.5.0 Dumping 0002B99D-0002BA9D 0002b99d b4 1b 4c a4 fb 01 c4 e4 08 01 eb 84 01 c9 b2 1f |..L.............| 0002b9ad 2b 94 bf c4 18 00 f1 1f 04 43 18 64 79 83 f8 c8 |+........C.dy...| 0002b9bd 40 8a b1 00 eb d1 02 01 23 92 f8 b6 40 01 f0 07 |@.......#...@...| 0002b9cd 01 03 fa 01 f1 21 43 82 f8 b6 10 01 23 5d f8 04 |.....!C.....#]..| 0002b9dd 4b 80 f8 b5 30 70 47 00 eb d1 04 01 22 94 f8 b6 |K...0pG....."...| 0002b9ed 30 01 f0 07 01 02 fa 01 f1 23 ea 01 01 84 f8 b6 |0........#......| 0002b9fd 10 01 23 5d f8 04 4b 80 f8 b5 30 70 47 00 bf ab |..#]..K...0pG...| 0002ba0d aa aa aa 00 eb 01 0c 8c f8 c8 30 82 b1 00 eb d1 |..........0.....| 0002ba1d 02 01 23 92 f8 b6 c0 01 f0 07 01 03 fa 01 f1 41 |..#............A| 0002ba2d ea 0c 01 01 23 82 f8 b6 10 80 f8 b5 30 70 47 00 |....#.......0pG.| 0002ba3d eb d1 0c 01 22 9c f8 b6 30 01 f0 07 01 02 fa 01 |...."...0.......| 0002ba4d f1 23 ea 01 01 01 23 8c f8 b6 10 80 f8 b5 30 70 |.#....#.......0p| 0002ba5d 47 00 bf 0f 49 00 23 30 b5 01 f1 3f 05 1c 46 4f |G...I.#0...?..FO| 0002ba6d f0 01 0e 01 e0 11 f8 01 3f c2 18 00 eb d3 0c 82 |........?.......| 0002ba7d f8 c8 40 9c f8 b6 20 03 f0 07 03 0e fa 03 f3 22 |..@... ........"| 0002ba8d ea 03 03 a9 42 8c f8 b6 30 ec d1 80 f8 b5 e0 30 |....B...0......0| </code></pre></div> <p dir="auto">Whereas some of the more common command line options allow memory to be written, read and hex-dumped, the more exciting features are probably the <code>-e</code> and <code>-a</code> options. They allow code to be executed on the device.</p> <p dir="auto">The <code>-e</code> option allows existing firmware code to be branched to directly, or custom code after writing it to the device's memory using the <code>-w</code> option. The lowest bit of an <code>address</code> argument passed to the <code>retracker.py</code> command line utility specifies whether or not to use Thumb mode (0: ARM mode, 1: Thumb mode).</p> <p dir="auto">The <code>-a</code> command line argument accepts so called <code>Polyps</code>, which are Python modules containing patches for the <code>Polyend Tracker</code> in the form of assembly routines and version-specific offsets and data.</p> <p dir="auto">Loading any of these modules using the <code>-a</code> command line option causes their assembly routines</p> <ul dir="auto"> <li>to be assembled on the fly</li> <li>transferred to the connected device</li> <li>executed on the connected device</li> </ul> <p dir="auto">Example:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="# python retracker.py -a polyp.scroller Connected to Polyend Tracker Detected fw patch v0.3.0 on Tracker firmware v1.5.0 Assembling patch #1 Description: "Text scroller on the Tracker's pads" Target address: 70100000 Mode: thumb Patching memory Running code... Done"><pre class="notranslate"><code># python retracker.py -a polyp.scroller Connected to Polyend Tracker Detected fw patch v0.3.0 on Tracker firmware v1.5.0 Assembling patch #1 Description: "Text scroller on the Tracker's pads" Target address: 70100000 Mode: thumb Patching memory Running code... Done </code></pre></div> <p dir="auto">This does not only allow for convenient and sped-up development of custom code and features, it also does not require new firmware to be flashed onto the <code>Tracker</code> for testing new functionality (but a reboot in the worst case).</p> <p dir="auto">Please have a look at the available modules in the <a href="/patois/RETracker/blob/main/polyp">polyp/</a> folder, which contains a few initial demos that fade the <code>Tracker's</code> screen in and out or repurpose its pads as a text-scroller canvas.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Reverse Engineering the Tracker</h2><a id="user-content-reverse-engineering-the-tracker" class="anchor" aria-label="Permalink: Reverse Engineering the Tracker" href="#reverse-engineering-the-tracker"><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>Polyend Tracker</code> is believed to be based on a µc similar to the Teensy 3.6 of which <a href="https://www.pjrc.com/store/teensy36.html" rel="nofollow">data sheets and other tech info is available here</a>. Be sure to check out the <a href="https://www.pjrc.com/teensy/K66P144M180SF5RMV2.pdf" rel="nofollow">MK66FX</a> manual for a memory map in order to avoid running into device crashes when dumping memory.</p> <p dir="auto">The <code>Tracker</code> firmware image is in IntelHex format and can be unpacked using <a href="/patois/RETracker/blob/main/fwtool.py">fwtool.py</a> or loaded directly by disassemblers supporting the IntelHex format, such as the <a href="https://hex-rays.com/ida-pro/ida-disassembler/" rel="nofollow">IDA Pro disassembler</a> and probably others such as <a href="https://ghidra-sre.org/" rel="nofollow">GHIDRA</a> or <a href="https://binary.ninja/" rel="nofollow">Binary Ninja</a>. The processor module to choose is ARM / little-endian. The firmware should be loaded at address 0. Address/offset 4 is the the reset vector with a pointer to the reset vector handler (start disassembling there). Most, if not all of its code runs in Thumb mode. I've found address <code>0x70100000</code> and above to be a reliable address to plant a <code>Polyp</code> into and run its code from there.</p> <p dir="auto">If you'd like to give firmware development a go, grab a copy of both <a href="https://www.pjrc.com/teensy/td_download.html" rel="nofollow">Arduino and the Teensyduino addon</a>, build some of the examples and flash the resulting <code>.hex</code> files onto the Tracker (be sure to pick <code>Teensy 3.6</code> and rename the resulting <code>.hex</code> file into something like <code>PolyendTracker_teensy.ptf</code>). Going back to an original <code>Polyend Tracker</code> firmware will be possible anytime using the Tracker's emergency update procedure, since it resides on a separate chip that isn't affected/overwritten by firmware updates.</p> <p dir="auto"><a target="_blank" rel="noopener noreferrer" href="/patois/RETracker/blob/main/rsrc/teensyduino.jpg"><img src="/patois/RETracker/raw/main/rsrc/teensyduino.jpg" alt="Teensyduino screenshot" style="max-width: 100%;"></a></p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">RETracker Wiki</h2><a id="user-content-retracker-wiki" class="anchor" aria-label="Permalink: RETracker Wiki" href="#retracker-wiki"><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 RETracker wiki can be found <a href="https://github.com/patois/RETracker/wiki">here</a>.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Discussions / Forums</h2><a id="user-content-discussions--forums" class="anchor" aria-label="Permalink: Discussions / Forums" href="#discussions--forums"><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">Please <a href="https://github.com/patois/RETracker/discussions/7" data-hovercard-type="discussion" data-hovercard-url="/patois/RETracker/discussions/7/hovercard">take part in discussions</a> and tell everybody about your experience with RETracker and how you're using it!</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Disclaimer</h2><a id="user-content-disclaimer" class="anchor" aria-label="Permalink: Disclaimer" href="#disclaimer"><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 author does not take any responsibility for any damage this project may cause to your Polyend Tracker. By using RETracker or any information derived, you agree that you are using any of this project's code, data and other information at your own risk.</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="P0/PQ+TIRjh2hDRApAVcfuvuCzAnRv2cCP2+/2xFfscbpRNPQHOFn/XwZU1J24iUNhoYO79uUyhbf3AkCDQDbg==" /> </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"> Reverse Engineering Framework for the Polyend Tracker </p> <h3 class="sr-only">Topics</h3> <div class="my-3"> <div class="f6"> <a href="/topics/tracker" title="Topic: tracker" data-view-component="true" class="topic-tag topic-tag-link"> tracker </a> <a href="/topics/teensy" title="Topic: teensy" data-view-component="true" class="topic-tag topic-tag-link"> teensy </a> <a href="/topics/hack" title="Topic: hack" data-view-component="true" class="topic-tag topic-tag-link"> hack </a> <a href="/topics/firmware" title="Topic: firmware" data-view-component="true" class="topic-tag topic-tag-link"> firmware </a> <a href="/topics/mod" title="Topic: mod" data-view-component="true" class="topic-tag topic-tag-link"> mod </a> <a href="/topics/reverse-engineering" title="Topic: reverse-engineering" data-view-component="true" class="topic-tag topic-tag-link"> reverse-engineering </a> <a href="/topics/disassembler" title="Topic: disassembler" data-view-component="true" class="topic-tag topic-tag-link"> disassembler </a> <a href="/topics/modification" title="Topic: modification" data-view-component="true" class="topic-tag topic-tag-link"> modification </a> <a href="/topics/music-production" title="Topic: music-production" data-view-component="true" class="topic-tag topic-tag-link"> music-production </a> <a href="/topics/custom-firmware" title="Topic: custom-firmware" data-view-component="true" class="topic-tag topic-tag-link"> custom-firmware </a> <a href="/topics/teensyduino" title="Topic: teensyduino" data-view-component="true" class="topic-tag topic-tag-link"> teensyduino </a> <a href="/topics/teensy36" title="Topic: teensy36" data-view-component="true" class="topic-tag topic-tag-link"> teensy36 </a> <a href="/topics/impulse-tracker" title="Topic: impulse-tracker" data-view-component="true" class="topic-tag topic-tag-link"> impulse-tracker </a> <a href="/topics/polyend" title="Topic: polyend" data-view-component="true" class="topic-tag topic-tag-link"> polyend </a> <a href="/topics/polyend-tracker" title="Topic: polyend-tracker" data-view-component="true" class="topic-tag topic-tag-link"> polyend-tracker </a> <a href="/topics/mod-tracker" title="Topic: mod-tracker" data-view-component="true" class="topic-tag topic-tag-link"> mod-tracker </a> 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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>110</strong> stars</a> </div> <h3 class="sr-only">Watchers</h3> <div class="mt-2"> <a href="/patois/RETracker/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 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