{"id":672,"date":"2026-07-09T10:31:50","date_gmt":"2026-07-09T09:31:50","guid":{"rendered":"http:\/\/192.168.1.167\/wordpress\/?p=672"},"modified":"2026-08-13T10:50:39","modified_gmt":"2026-08-13T08:50:39","slug":"running-a-canopen-stack-on-stm32","status":"publish","type":"post","link":"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/running-a-canopen-stack-on-stm32\/","title":{"rendered":"Running a CANopen Stack on an STM32"},"content":{"rendered":"<p>The STM32 family is a natural home for CANopen devices: broad availability, integrated CAN (bxCAN or FDCAN) peripherals, and enough headroom for the protocol plus your application. Bringing a CANopen stack up on an STM32 is straightforward when the stack is designed for portability.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-flat ez-toc-counter ez-toc-container-direction\">\r\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\r\n<label for=\"ez-toc-cssicon-toggle-item-6ab2af09866eb\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #000000;color:#000000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #000000;color:#000000\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6ab2af09866eb\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/running-a-canopen-stack-on-stm32\/#What_the_hardware_gives_you\" >What the hardware gives you<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/running-a-canopen-stack-on-stm32\/#The_porting_layer\" >The porting layer<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/running-a-canopen-stack-on-stm32\/#Object_dictionary_and_integration\" >Object dictionary and integration<\/a><\/li><\/ul><\/nav><\/div>\r\n<h2><span class=\"ez-toc-section\" id=\"What_the_hardware_gives_you\"><\/span>What the hardware gives you<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Most CANopen designs need one CAN channel; gateways and bridges use two. A part such as an STM32F207 \u2014 with multiple CAN controllers and an Ethernet MAC \u2014 is a common choice for a CAN-to-Ethernet gateway, letting a single device bridge CANopen to an IP network.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_porting_layer\"><\/span>The porting layer<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A well-architected stack talks to the hardware through a thin abstraction: send\/receive a CAN frame, a millisecond timer, and (optionally) non-volatile storage for the object dictionary. Port those few functions to the STM32 HAL and the protocol logic runs unchanged. This is the essence of low hardware dependency \u2014 the same stack moves between MCUs without touching the certified core.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Object_dictionary_and_integration\"><\/span>Object dictionary and integration<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>You describe your device through its object dictionary (CiA&nbsp;301, plus any device profile). Good tooling generates the dictionary and the glue so you spend your time on the application \u2014 PDO mapping, SDO handling, NMT states \u2014 rather than protocol plumbing.<\/p>\n<p><em>Building a CANopen node or gateway on STM32? <a href=\"\/products\/canopen-slave\/\">Explore the ISIT-Neperis CANopen stack<\/a> or <a href=\"\/contact\/\">request integration support<\/a>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>STM32 microcontrollers are a popular, cost-effective base for CANopen nodes and gateways. What it takes to bring a CANopen stack up on one.<\/p>\n","protected":false},"author":1,"featured_media":977,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-672","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical"],"acf":[],"_links":{"self":[{"href":"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/wp-json\/wp\/v2\/posts\/672","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/wp-json\/wp\/v2\/comments?post=672"}],"version-history":[{"count":3,"href":"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/wp-json\/wp\/v2\/posts\/672\/revisions"}],"predecessor-version":[{"id":1586,"href":"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/wp-json\/wp\/v2\/posts\/672\/revisions\/1586"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/wp-json\/wp\/v2\/media\/977"}],"wp:attachment":[{"href":"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/wp-json\/wp\/v2\/media?parent=672"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/wp-json\/wp\/v2\/categories?post=672"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jfp-1970.tailb9a06.ts.net\/wordpress\/wp-json\/wp\/v2\/tags?post=672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}