{"id":13054,"date":"2026-06-25T10:54:04","date_gmt":"2026-06-25T10:54:04","guid":{"rendered":"https:\/\/imperix.com\/doc\/?p=13054"},"modified":"2026-06-25T12:00:00","modified_gmt":"2026-06-25T12:00:00","slug":"getting-started-with-cpp-sdk","status":"publish","type":"post","link":"https:\/\/imperix.com\/doc\/help\/getting-started-with-cpp-sdk","title":{"rendered":"Getting started with the CPP SDK"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 ez-toc-wrap-right-text counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/imperix.com\/doc\/help\/getting-started-with-cpp-sdk\/#Product-description\" >Product description<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/imperix.com\/doc\/help\/getting-started-with-cpp-sdk\/#CPP-SDK-programming-workflow\" >CPP SDK programming workflow<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/imperix.com\/doc\/help\/getting-started-with-cpp-sdk\/#Navigating-the-IDE\" >Navigating the IDE<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/imperix.com\/doc\/help\/getting-started-with-cpp-sdk\/#User-template-structure-and-content\" >User template structure and content<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/imperix.com\/doc\/help\/getting-started-with-cpp-sdk\/#Developing-the-user-code\" >Developing the user code<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/imperix.com\/doc\/help\/getting-started-with-cpp-sdk\/#Global-variables\" >Global variables<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/imperix.com\/doc\/help\/getting-started-with-cpp-sdk\/#UserInit-function\" >UserInit() function<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/imperix.com\/doc\/help\/getting-started-with-cpp-sdk\/#UserInterrupt-function\" >UserInterrupt() function<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/imperix.com\/doc\/help\/getting-started-with-cpp-sdk\/#Launching-the-user-code\" >Launching the user code<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/imperix.com\/doc\/help\/getting-started-with-cpp-sdk\/#Further-reading\" >Further reading<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">This article provides instructions to get started with the CPP SDK, focusing on the workflow associated with the development of C++ control algorithms for imperix controllers. Specifically targeted at first-time users, it notably addresses:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Product presentation:<\/strong>&nbsp;What the CPP SDK is, and what pieces of software it contains.<\/li>\n\n\n\n<li><strong>CPP SDK programming workflow:<\/strong> A general overview of the workflow to give a first idea of how imperix controllers are programmed.<\/li>\n\n\n\n<li><strong>Development with the C++ IDE:<\/strong> An introduction to the C++ IDE and to the structure and content of the user code template.<\/li>\n\n\n\n<li><strong>Buck converter example:<\/strong> An example initializing and operating the main hardware peripherals, such as ADCs and PWM modulators.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Instructions regarding the initial software installation and setup of the CPP SDK are detailed in <a href=\"https:\/\/imperix.com\/doc\/help\/getting-started-cpp-sdk\/installation-and-utilisation-of-cpp-sdk?currentThread=cpp-sdk\">PN146<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Product-description\"><\/span>Product description<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The&nbsp;<a href=\"https:\/\/imperix.com\/software\/cpp-sdk\">CPP SDK<\/a>&nbsp;is a Software Development Kit (SDK) for programming imperix controllers using C++ code. It includes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>An <strong>Eclipse-based IDE<\/strong> tailored to program imperix controllers<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1114\" height=\"846\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-41.png\" alt=\"C++ IDE to get started with CPP SDK development\" class=\"wp-image-45156\" style=\"aspect-ratio:1.31681045751634;width:653px;height:auto\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-41.png 1114w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-41-300x228.png 300w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-41-1024x778.png 1024w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-41-768x583.png 768w\" sizes=\"auto, (max-width: 1114px) 100vw, 1114px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>The BBOS&nbsp;<strong>operating system<\/strong>&nbsp;for the controllers.<\/li>\n\n\n\n<li>The standard&nbsp;<strong>FPGA firmware<\/strong>.<\/li>\n\n\n\n<li>The&nbsp;<strong>Cockpit<\/strong>&nbsp;monitoring software. <a href=\"https:\/\/imperix.com\/software\/cockpit\/\">Cockpit<\/a> enables real-time interaction and monitoring of the physical converter by providing access to the model variables and all the signals measured by imperix controllers.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"400\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-31.png\" alt=\"Getting started with CPP SDK - Cockpit overview\" class=\"wp-image-44262\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-31.png 640w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-31-300x188.png 300w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/imperix.com\/products\/power-electronic-controllers\/\">Imperix controllers<\/a> can also be programmed used graphical approaches from Simulink or PLECS, leveraging automated code generation. Users interested in that approach should refer to separate documentation regarding the <a href=\"https:\/\/imperix.com\/doc\/help\/installation-guide-acg-sdk?currentThread=b-box-4\">ACG SDK<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"CPP-SDK-programming-workflow\"><\/span><strong><strong>CPP SDK programming workflow<\/strong><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Before diving into control development, it is helpful to get the big picture of the CPP SDK workflow:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Code development:<\/strong> The control algorithm is implemented within the Imperix IDE (based on Eclipse).<\/li>\n\n\n\n<li><strong>Compilation:<\/strong> The code is built, and an executable binary file (<code>.elf<\/code>) is generated.<\/li>\n\n\n\n<li><strong>Flashing the code:<\/strong> This <code>.elf<\/code> file is retrieved by Cockpit and flashed to the controller over Ethernet.<\/li>\n\n\n\n<li><strong>Execution:<\/strong> The executable is loaded and run in real time on the controller.<\/li>\n<\/ol>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"307\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/Workflow-03-2-1024x307.png\" alt=\"\" class=\"wp-image-45919\" style=\"aspect-ratio:3.335629139072848;width:575px;height:auto\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/Workflow-03-2-1024x307.png 1024w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/Workflow-03-2-300x90.png 300w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/Workflow-03-2-768x230.png 768w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/Workflow-03-2-1536x460.png 1536w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/Workflow-03-2-2048x613.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Navigating-the-IDE\"><\/span>Navigating the IDE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Assuming that the user template is already imported into the workspace, users should be presented with a window as shown in the screenshot below. Instructions to import the user template is provided in the <a href=\"https:\/\/imperix.com\/doc\/help\/getting-started-cpp-sdk\/installation-and-utilisation-of-cpp-sdk?currentThread=cpp-sdk\">Installation guide for the CPP SDK<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The interface is organized into several key areas as follows:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Build and launch controls (top left):<\/strong> Dedicated buttons located in the upper-left toolbar are used to compile the code and deploy the executable to the controller.<\/li>\n\n\n\n<li><strong>Project explorer (left panel):<\/strong> Displays the project&#8217;s directory structure and project files. The contents of these files are detailed in the upcoming sections.<\/li>\n\n\n\n<li><strong>Code editor (center panel):<\/strong> Serves as the main workspace for editing the code.<\/li>\n\n\n\n<li><strong>Console (bottom panel):<\/strong> Outputs the system logs, displaying any compilation warnings or errors.<\/li>\n<\/ol>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1593\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/IDE_overview-scaled.png\" alt=\"CPP IDE layout to get started with the CPP SDK\" class=\"wp-image-45160\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/IDE_overview-scaled.png 2560w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/IDE_overview-300x187.png 300w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/IDE_overview-1024x637.png 1024w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/IDE_overview-768x478.png 768w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/IDE_overview-1536x956.png 1536w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/IDE_overview-2048x1274.png 2048w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"User-template-structure-and-content\"><\/span>User template structure and content<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The user template should be imported into the IDE workspace by following the <a href=\"https:\/\/imperix.com\/doc\/help\/getting-started-cpp-sdk\/installation-and-utilisation-of-cpp-sdk?currentThread=cpp-sdk\">Installation guide for imperix CPP SDK<\/a>. This template contains several folders, as shown and described below.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"136\" height=\"146\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-47.png\" alt=\"\" class=\"wp-image-45448\"\/><\/figure>\n<\/div>\n\n\n<h4 class=\"wp-block-heading\">My functions<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>My_functions<\/strong> is the folder where all user files should be stored. By default, it contains only two files:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>user.cpp<\/code>, which serves as the code root. It contains the initialization routine <code>UserInit()<\/code> and the main interrupt service routine <code>UserInterrupt()<\/code>. Further details regarding these two functions are provided in the example below.<\/li>\n\n\n\n<li><code>user.h<\/code>, which typically contains the prototypes of the user-defined routines as well as some useful readability helper definitions.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Includes<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Includes <\/strong>folder contains the header files for the user-accessible routines associated with the hardware peripherals. By reviewing these headers, users can obtain a quick overview of the available routines and the necessary information regarding their implementation. This folder is structured into two main subdirectories: <strong>Core<\/strong> and <strong>Driver<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Core<\/strong> folder notably includes routines managing the operational state (FAULT, BLOCKED, OPERATING) of imperix controllers. More information of the related operating principles is given in <a href=\"https:\/\/imperix.com\/doc\/help\/operating-principles-of-imperix-controllers\">PN261<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Driver<\/strong> folder contains the definitions of the peripheral driver routines. All of them are further detailed in the imperix software documentation: <a href=\"https:\/\/imperix.com\/software-documentation\/\">https:\/\/imperix.com\/software-documentation\/<\/a><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">API<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>API <\/strong>folder provides a predefined routines frequently used in power electronics. Developers are encouraged to use these standard functions, though they can be modified as needed. Key implementations provided within this directory include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PI controllers<\/li>\n\n\n\n<li>MPPT algorithms<\/li>\n\n\n\n<li>Basic PLLs, such as dq-frame and SOGI<\/li>\n\n\n\n<li>Coordinate transformations<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Developing-the-user-code\"><\/span><strong>Developing the user code<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This section addresses the development of the user-specific, application-level, part of the embedded software. This starts from the <code>user.cpp<\/code> file located in the <strong>My_functions<\/strong> folder. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here after, an example is developed, meant to operate a buck converter in an open-loop configuration. The resulting <code>user.cpp<\/code> file is shown below, with explanations about each section given afterward. Further details can on the application itself can be found in <a href=\"https:\/\/imperix.com\/doc\/implementation\/step-down-buck-converter?currentThread=current-controlled-buck-converter\">TN100<\/a>.<\/p>\n\n\n<style>.kt-accordion-id13054_4c3834-d5 .kt-accordion-inner-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:1px;}.kt-accordion-id13054_4c3834-d5 .kt-accordion-panel-inner{border-top:2px solid transparent;border-right:2px solid transparent;border-bottom:2px solid transparent;border-left:2px solid transparent;border-top-left-radius:2px;border-top-right-radius:2px;border-bottom-right-radius:2px;border-bottom-left-radius:2px;background:#ffffff;padding-top:20px;padding-right:20px;padding-bottom:20px;padding-left:20px;}.kt-accordion-id13054_4c3834-d5 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top:2px solid #f2f2f2;border-right:2px solid #f2f2f2;border-bottom:2px solid #f2f2f2;border-left:2px solid #f2f2f2;border-top-left-radius:2px;border-top-right-radius:2px;border-bottom-right-radius:2px;border-bottom-left-radius:2px;background:#ffffff;font-size:16px;line-height:24px;letter-spacing:0px;font-weight:bold;text-transform:none;color:var(--global-palette3, #1A202C);padding-top:12px;padding-right:10px;padding-bottom:8px;padding-left:16px;}.kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:before{background:var(--global-palette3, #1A202C);}.kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger{background:var(--global-palette3, #1A202C);}.kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger:before{background:#ffffff;}.kt-accordion-id13054_4c3834-d5 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id13054_4c3834-d5 .kt-blocks-accordion-header:focus-visible{color:#444444;background:#ffffff;border-top:2px solid #eeeeee;border-right:2px solid #eeeeee;border-bottom:2px solid #eeeeee;border-left:2px solid #eeeeee;}.kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:before, body:not(.hide-focus-outline) .kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-blocks-accordion--visible .kt-blocks-accordion-icon-trigger:after, body:not(.hide-focus-outline) .kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:before{background:#444444;}.kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger, body:not(.hide-focus-outline) .kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger{background:#444444;}.kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:before, body:not(.hide-focus-outline) .kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:after, body:not(.hide-focus-outline) .kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:before{background:#ffffff;}.kt-accordion-id13054_4c3834-d5 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id13054_4c3834-d5 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{color:var(--global-palette3, #1A202C);background:var(--global-palette9, #ffffff);border-top:2px solid var(--global-palette6, #718096);border-right:2px solid var(--global-palette6, #718096);border-bottom:2px solid var(--global-palette6, #718096);border-left:2px solid var(--global-palette6, #718096);}.kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id13054_4c3834-d5:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active 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.kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id13054_4c3834-d5 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{border-top:2px solid var(--global-palette6, #718096);border-right:2px solid var(--global-palette6, #718096);border-bottom:2px solid var(--global-palette6, #718096);border-left:2px solid var(--global-palette6, #718096);}}@media all and (max-width: 767px){.kt-accordion-id13054_4c3834-d5 .kt-accordion-inner-wrap{display:block;}.kt-accordion-id13054_4c3834-d5 .kt-accordion-inner-wrap .kt-accordion-pane:not(:first-child){margin-top:1px;}.kt-accordion-id13054_4c3834-d5 .kt-accordion-panel-inner{border-top:2px solid transparent;border-right:2px solid transparent;border-bottom:2px solid transparent;border-left:2px solid transparent;}.kt-accordion-id13054_4c3834-d5 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top:2px solid #f2f2f2;border-right:2px solid #f2f2f2;border-bottom:2px solid #f2f2f2;border-left:2px solid #f2f2f2;}.kt-accordion-id13054_4c3834-d5 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id13054_4c3834-d5 .kt-blocks-accordion-header:focus-visible{border-top:2px solid #eeeeee;border-right:2px solid #eeeeee;border-bottom:2px solid #eeeeee;border-left:2px solid #eeeeee;}.kt-accordion-id13054_4c3834-d5 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id13054_4c3834-d5 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{border-top:2px solid var(--global-palette6, #718096);border-right:2px solid var(--global-palette6, #718096);border-bottom:2px solid var(--global-palette6, #718096);border-left:2px solid var(--global-palette6, #718096);}}<\/style>\n<div class=\"wp-block-kadence-accordion alignnone\"><div class=\"kt-accordion-wrap kt-accordion-id13054_4c3834-d5 kt-accordion-has-8-panes kt-active-pane-0 kt-accordion-block kt-pane-header-alignment-left kt-accodion-icon-style-arrow kt-accodion-icon-side-left\" style=\"max-width:none\"><div class=\"kt-accordion-inner-wrap\" data-allow-multiple-open=\"false\" data-start-open=\"none\">\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-7 kt-pane13054_926211-04\"><div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\">user.cpp<\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div><div class=\"kt-accordion-panel kt-accordion-panel-hidden\"><div class=\"kt-accordion-panel-inner\"><pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"C++\" data-shcb-language-slug=\"cpp\"><span><code class=\"hljs language-cpp\"><span class=\"hljs-meta\">#<span class=\"hljs-meta-keyword\">include<\/span> <span class=\"hljs-meta-string\">\"user.h\"<\/span><\/span>\n\n<span class=\"hljs-comment\">\/**\n * Global variables\n * float, int, and unsigned int, can be monitored and altered from imperix Cockpit\n *\/<\/span>\n<span class=\"hljs-keyword\">float<\/span> Vdc_meas  = <span class=\"hljs-number\">0<\/span>;  <span class=\"hljs-comment\">\/\/ Measured DC bus voltage<\/span>\n<span class=\"hljs-keyword\">float<\/span> Vout_ref  = <span class=\"hljs-number\">25<\/span>; <span class=\"hljs-comment\">\/\/ Buck converter output voltage reference<\/span>\n<span class=\"hljs-keyword\">float<\/span> Vout_meas = <span class=\"hljs-number\">0<\/span>;  <span class=\"hljs-comment\">\/\/ Measured output voltage<\/span>\n<span class=\"hljs-keyword\">float<\/span> d         = <span class=\"hljs-number\">0<\/span>;  <span class=\"hljs-comment\">\/\/ CB-PWM duty cycle<\/span>\n\n<span class=\"hljs-comment\">\/**\n * Specify the number of devices used by this code.\n * This information is used by Cockpit for display purposes only.\n *\/<\/span>\nNUMBER_OF_DEVICES(<span class=\"hljs-number\">1<\/span>);\n\n<span class=\"hljs-comment\">\/**\n * Initialization routine executed only once, before the first call of the main interrupt\n * To be used to configure all needed peripherals and perform all needed initializations\n *\/<\/span>\n<span class=\"hljs-function\">tUserSafe <span class=\"hljs-title\">UserInit<\/span><span class=\"hljs-params\">(<span class=\"hljs-keyword\">void<\/span>)<\/span>\n<\/span>{\n\t<span class=\"hljs-comment\">\/**\n\t * Configuration of the main interrupt:\n\t * - The frequency of CLOCK_0 is set to the desired switching frequency\n\t * - The main interrupt routine is mapped on CLOCK_0, with a phase of 0.5.\n\t * - As the the sampling of the ADC channels happens just before the interrupt is executed,\n\t *   setting a phase of 0.5 allows to sample in the middle of each switching periods.\n\t *\/<\/span>\n\tClock_SetFrequency(CLOCK_0, SW_FREQ);\n\tConfigureMainInterrupt(UserInterrupt, CLOCK_0, <span class=\"hljs-number\">0.5<\/span>);\n\n\t<span class=\"hljs-comment\">\/**\n\t * Configuration of the ADC channels, with:\n\t * - sensor sensitivity defined in user.h\n\t * - no sensor offset compensation\n\t *\/<\/span>\n\tAdc_ConfigureSensor(ADC0, IX_PEB_800_40_V_SENSITIVITY, <span class=\"hljs-number\">0.0<\/span>, <span class=\"hljs-number\">0<\/span>);\n\tAdc_EnableSynchronousAveraging(ADC0);\n\n\tAdc_ConfigureSensor(ADC1, IX_VSR_500_HBW_SENSITIVITY, <span class=\"hljs-number\">0.0<\/span>, <span class=\"hljs-number\">0<\/span>);\n\tAdc_EnableSynchronousAveraging(ADC1);\n\n\t<span class=\"hljs-comment\">\/**\n\t * Configuration of PWM channel 0 (lines 0 &amp; 1)\n\t * - mapping on CLOCK_0\n\t * - triangle carrier\n\t * - 1 microsecond dead-time between complementary signals\n\t *\/<\/span>\n\tCbPwm_ConfigureChannel(PWM_CHANNEL_0, CLOCK_0, TRIANGLE, DEADTIME);\n\n\t<span class=\"hljs-comment\">\/**\n\t * Note: the function CbPwm_ConfigureChannel() is a helper defined in user.h\n\t * By default this routine:\n\t * - sets a phase of 0 between CLOCK_0 and PWM carrier\n\t * - sets outputs as 2 complementary signals\n\t * - activates the PWM channel\n\t *\/<\/span>\n\n\t<span class=\"hljs-keyword\">return<\/span> SAFE;\n}\n\n\n<span class=\"hljs-comment\">\/**\n * Main interrupt routine\n *\/<\/span>\n<span class=\"hljs-function\">tUserSafe <span class=\"hljs-title\">UserInterrupt<\/span><span class=\"hljs-params\">(<span class=\"hljs-keyword\">void<\/span>)<\/span>\n<\/span>{\n\t<span class=\"hljs-comment\">\/\/ Retrieve the measurements<\/span>\n\tVdc_meas  = Adc_GetValue(ADC0);\n\tVout_meas = Adc_GetValue(ADC1);\n\n\t<span class=\"hljs-comment\">\/\/ Compute the duty cycle for the CB-PWM modulator<\/span>\n\td = Vout_ref \/ Vdc_meas;\n\n\t<span class=\"hljs-comment\">\/\/ Update the PWM duty-cycles<\/span>\n\tCbPwm_SetDutyCycle(PWM_CHANNEL_0, d);\n\n\t<span class=\"hljs-keyword\">return<\/span> SAFE;\n}\n\n\n<span class=\"hljs-comment\">\/**\n * Routine executed when the core state goes into FAULT mode\n *\/<\/span>\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">UserError<\/span><span class=\"hljs-params\">(tErrorSource source)<\/span>\n<\/span>{\n\n}<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">C++<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">cpp<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre><\/div><\/div><\/div>\n<\/div><\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Global-variables\"><\/span>Global variables<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The initial segment of the <code>user.cpp<\/code>  file is dedicated to the declaration of global variables. All global variables (of type int, unsigned int, or float) will be available in Cockpit during run time. For the buck converter example, the following variables are instantiated, specifically for this purpose.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"607\" height=\"122\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-43.png\" alt=\"Global variables to get started with the CPP SDK\" class=\"wp-image-45322\" style=\"width:607px;height:auto\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-43.png 607w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-43-300x60.png 300w\" sizes=\"auto, (max-width: 607px) 100vw, 607px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"UserInit-function\"><\/span>UserInit() function<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The next function is <code>UserInit()<\/code>. This initialization routine is executed only once at startup, prior to the first call of the main interrupt. It is utilized to configure the interrupt timings and initialize all the necessary hardware peripherals. More information about how imperix controllers behave during run-time is given in <a href=\"https:\/\/imperix.com\/doc\/help\/operating-principles-of-imperix-controllers\">PN261<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>UserInit()<\/code> notably defines the control period, the sampling phase, and the switching frequency. Comprehensive details regarding the configuration of these clocks can be found in <a href=\"https:\/\/imperix.com\/doc\/help\/timing-configuration-on-imperix-controllers\">PN259<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For the specific case of the user template, the <code>UserInit()<\/code> function configures the following:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sets the frequency of <code>CLOCK_0<\/code> to the desired frequency (e.g. 20kHz).<\/li>\n\n\n\n<li><span style=\"color: var(--global-palette4);\">Maps the main interrupt to <\/span><code>CLOCK_0<\/code> and sets a sampling phase of 0.5 (the middle of the period)<\/li>\n\n\n\n<li>Configures ADC channels 0 and 1 with the proper sensor sensitivity. More information on the available routines is given in the documentation related to the <a href=\"https:\/\/imperix.com\/doc\/software\/analog-data-acquisition\">ADC<\/a> peripheral.<br>(Warning: for B-Box RCP 3.0 the configured sensitivity should consider the hardware gain configured input gain on the analog front end. A numerical example is given in <a href=\"https:\/\/imperix.com\/doc\/help\/analog-front-end-configuration-on-b-box-rcp\">PN105<\/a>.)<\/li>\n\n\n\n<li>Enables synchronous averaging for both ADC channels. More information on synchronous averaging is provided in <a href=\"https:\/\/imperix.com\/doc\/help\/sampling-techniques-for-power-electronics?currentThread=b-board-pro\">PN258<\/a>.<\/li>\n\n\n\n<li>Initializes a carrier-based PWM peripheral on <code>PWM_CHANNEL_0<\/code>. This modulator is mapped to <code>CLOCK_0<\/code>, is based on a triangular carrier, and is configured with a dead-time of 1 us. More information on the available routines is given in the documentation related to the <a href=\"https:\/\/imperix.com\/doc\/software\/carrier-based-pwm\">CB-PWM<\/a> peripheral.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"697\" height=\"678\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-45.png\" alt=\"User init function to get started with the CPP SDK\" class=\"wp-image-45400\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-45.png 697w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-45-300x292.png 300w\" sizes=\"auto, (max-width: 697px) 100vw, 697px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"UserInterrupt-function\"><\/span>UserInterrupt() function<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The <code>UserInterrupt()<\/code> routine is executed at the <code>CLOCK_0<\/code> frequency, as configured during <code>UserInit()<\/code>. This function encapsulates the main interrupt-based control routines required to operate the power stage. This generally includes the acquisition of ADC measurements, the execution of control strategies, and the update of the PWM duty cycles. More information on this typical process is given in <a href=\"https:\/\/imperix.com\/doc\/help\/operating-principles-of-imperix-controllers\">PN261<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In this example, the <code>UserInterrupt()<\/code> function simply computes the required duty cycle for the buck converter according to the input voltage measurement. It then updates the output of the PWM modulator.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"410\" height=\"211\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-46.png\" alt=\"Getting started with CPP SDK control development\" class=\"wp-image-45416\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-46.png 410w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-46-300x154.png 300w\" sizes=\"auto, (max-width: 410px) 100vw, 410px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Note that both the <code>UserInit()<\/code> and <code>UserInterrupt()<\/code> functions return the value <code>SAFE<\/code> when they were executed without errors. Otherwise, the B-Box goes into fault, should an error occur during the execution, or if the value <code>UNSAFE <\/code>is returned.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Launching-the-user-code\"><\/span><strong>Launching the user code<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Once the user code has been successfully written and compiled, Cockpit automatically opens up so that it can be flashed onto the controller. The subsequent steps are described in <a href=\"https:\/\/imperix.com\/doc\/help\/programming-imperix-controllers\">programming and operating imperix controllers<\/a>\u00a0and are identical for both imperix SDKs.<\/p>\n\n\n\n<div class=\"wp-block-simple-alerts-for-gutenberg-alert-boxes sab-alert sab-alert-warning\" role=\"alert\">Because offline simulation is not readily available with the CPP SDK, development relies heavily on incremental physical validation. It is hence critical to <strong>configure robust hardware protections<\/strong> prior to testing. The article on <a href=\"https:\/\/imperix.com\/doc\/help\/over-current-and-over-voltage-protection?currentThread=power-modules\">over-current and over-voltage protections<\/a> is a recommended starting point.<\/div>\n\n\n\n<h4 class=\"wp-block-heading\">Memory access errors<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Memory access violations may easily occur when writing code manually, most often due to misused pointers. When an invalid memory address is accessed, a so-called <strong>software fault<\/strong> is detected, immediately holding the blocking all PWM outputs. This is one of many other protection mechanisms available on imperix controllers, as documented in <a href=\"https:\/\/imperix.com\/doc\/help\/hardware-protections-on-imperix-controllers\">PN263<\/a>. In such a case, the user code must be restarted.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"570\" src=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-49-1024x570.png\" alt=\"Programming essentials for the CPP SDK pointer error\" class=\"wp-image-45698\" srcset=\"https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-49-1024x570.png 1024w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-49-300x167.png 300w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-49-768x428.png 768w, https:\/\/imperix.com\/doc\/wp-content\/uploads\/2022\/08\/image-49.png 1104w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Further-reading\"><\/span>Further reading<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">It is recommended to also read the following pages:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/imperix.com\/doc\/help\/programming-essentials-for-the-cpp-sdk\">Efficient programming with the CPP SDK<\/a> provides insights specific to power electronics applications.<\/li>\n\n\n\n<li>The <a href=\"https:\/\/imperix.com\/doc\/help\/cockpit-user-guide\">Cockpit user guide<\/a>&nbsp;also gives useful hints about how to use the monitoring software.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Additionally, controller-specific getting-started instructions can be found in the following notes:<a href=\"https:\/\/imperix.com\/doc\/help\/b-box-4-quick-start-guide\"><\/a><a href=\"https:\/\/imperix.com\/doc\/help\/getting-started-acg-sdk-simulink\"><\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/imperix.com\/doc\/help\/b-box-4-quick-start-guide\">B-Box 4 &#8211; Quick-start Guide<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/imperix.com\/doc\/help\/getting-started-with-b-box-micro\">B-Box 3 micro &#8211; Quick-start Guide<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/imperix.com\/doc\/help\/tpi-quick-start-guide\">TPI 8032 &#8211; Quick-start Guide<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>This article provides instructions to get started with the CPP SDK, focusing on the workflow associated with the development of C++ control algorithms for imperix&#8230;<\/p>\n","protected":false},"author":11,"featured_media":13282,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[14,3],"tags":[165,74,161],"software-environments":[105],"provided-results":[],"related-products":[31,32,92,166,51,110],"guidedreadings":[],"tutorials":[],"user-manuals":[136],"coauthors":[64],"class_list":["post-13054","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-getting-started-cpp-sdk","category-help","tag-b-box-4","tag-cpp-sdk","tag-imperix-controllers","software-environments-c-plus-plus","related-products-b-board-pro","related-products-b-box-rcp","related-products-b-box-micro","related-products-b-box-rcp-3-0","related-products-cpp-sdk","related-products-tpi","user-manuals-cpp-sdk"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - 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