<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <title>Firmware for CoreSight Debug Access Port</title> <title>CMSIS-DAP: Firmware for CoreSight Debug Access Port</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="cmsis.css" rel="stylesheet" type="text/css" /> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <script type="text/javascript" src="printComponentTabs.js"></script> <link href="navtree.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="resize.js"></script> <script type="text/javascript" src="navtree.js"></script> <script type="text/javascript"> $(document).ready(initResizable); $(window).load(resizeHeight); </script> <link href="search/search.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="search/search.js"></script> <script type="text/javascript"> $(document).ready(function() { searchBox.OnSelectItem(0); }); </script> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 46px;"> <td id="projectlogo"><img alt="Logo" src="CMSIS_Logo_Final.png"/></td> <td style="padding-left: 0.5em;"> <div id="projectname">CMSIS-DAP  <span id="projectnumber">Version 1.1.0</span> </div> <div id="projectbrief">Interface Firmware for CoreSight Debug Access Port</div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <div id="CMSISnav" class="tabs1"> <ul class="tablist"> <script type="text/javascript"> <!-- writeComponentTabs.call(this); //--> </script> </ul> </div> <!-- Generated by Doxygen 1.8.6 --> <script type="text/javascript"> var searchBox = new SearchBox("searchBox", "search",false,'Search'); </script> <div id="navrow1" class="tabs"> <ul class="tablist"> <li class="current"><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Usage and Description</span></a></li> <li><a href="modules.html"><span>Reference</span></a></li> <li> <div id="MSearchBox" class="MSearchBoxInactive"> <span class="left"> <img id="MSearchSelect" src="search/mag_sel.png" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" alt=""/> <input type="text" id="MSearchField" value="Search" accesskey="S" onfocus="searchBox.OnSearchFieldFocus(true)" onblur="searchBox.OnSearchFieldFocus(false)" onkeyup="searchBox.OnSearchFieldChange(event)"/> </span><span class="right"> <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a> </span> </div> </li> </ul> </div> </div><!-- top --> <div id="side-nav" class="ui-resizable side-nav-resizable"> <div id="nav-tree"> <div id="nav-tree-contents"> <div id="nav-sync" class="sync"></div> </div> </div> <div id="splitbar" style="-moz-user-select:none;" class="ui-resizable-handle"> </div> </div> <script type="text/javascript"> $(document).ready(function(){initNavTree('index.html','');}); </script> <div id="doc-content"> <!-- window showing the filter options --> <div id="MSearchSelectWindow" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" onkeydown="return searchBox.OnSearchSelectKey(event)"> <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Pages</a></div> <!-- iframe showing the search results (closed by default) --> <div id="MSearchResultsWindow"> <iframe src="javascript:void(0)" frameborder="0" name="MSearchResults" id="MSearchResults"> </iframe> </div> <div class="header"> <div class="headertitle"> <div class="title">Firmware for CoreSight Debug Access Port </div> </div> </div><!--header--> <div class="contents"> <div class="textblock"><p><b>CMSIS-DAP</b> is a specification and a implementation of a <b>Firmware</b> that supports access to the CoreSight <b>Debug Access Port</b> (DAP).ARM Cortex processors provide <a href="http://www.arm.com/products/system-ip/coresight/index.php" target="_blank">CoreSight Debug and Trace</a>. CMSIS-DAP supports target Devices that contain one or more Cortex processors. A Device provides a Debug Access Port (DAP) typically either with a 5-pin JTAG or with a 2-pin Serial Wired Debug (SWD) interface that connects to a Debug Unit. CMSIS-DAP is the interface firmware for a Debug Unit that connects the Debug Port to USB. Debuggers that execute on a host computer connect via USB and the Debug Unit to the Device which runs the application software.</p> <div class="image"> <img src="CMSIS_DAP_INTERFACE.png" alt="CMSIS_DAP_INTERFACE.png"/> <div class="caption"> CMSIS-DAP Overview</div></div> <h2>Benefits of CMSIS-DAP </h2> <ul> <li>Provides a standardized interface for debuggers.<ul> <li>Interfaces to many standard debuggers is already available. This includes also ARM DS-5 and Keil MDK-ARM.</li> </ul> </li> <li>Access to CoreSight registers of all Cortex processor architectures (Cortex-A/R/M).</li> <li>Connects via 5-pin JTAG or 2-pin Serial Wire Debug (SWD).</li> <li>Supports multi-core debugging.</li> <li>Supports Serial Wire Output of Cortex-M devices (new in CMSIS-DAP Version 1.10).</li> <li>Easy to deploy to Debug Units based on Cortex-M microcontrollers.</li> <li>Debug Unit may be integrated on an evaluation board.</li> <li>USB using HID (Human Interface Device) driver class that avoids driver installation on host PC.</li> <li>Supports time-critical JTAG or SWD command execution (new in CMSIS-DAP Version 1.10).</li> </ul> <h1>CMSIS-DAP Firmware </h1> <p>The CMSIS-DAP Firmware is provided as source code and is fully configurable to a new Debug Unit. A source code template and several reference implementations for popular Debug Units are provided. Refer to <a class="el" href="group__DAP__Config__gr.html">Firmware Configuration</a> for more information.</p> <p>The CMSIS-DAP Software Stack is composed of the following components:</p> <ul> <li>CMSIS-DAP Firmware that interfaces to JTAG or SWD Debug pins using standard I/O pins of the Cortex-M device.</li> <li>CMSIS-Driver USART that connects the UART of the Cortex-M device to the SWO output from the target.</li> <li>USB Communication Stack that interfaces to the USB Port of the Host Computer using the HID class.<ul> <li>The USB Device middleware may require CMSIS-RTOS and a CMSIS-Driver USB.</li> </ul> </li> </ul> <div class="image"> <img src="CMSIS_DAP_SWStack.png" alt="CMSIS_DAP_SWStack.png"/> <div class="caption"> CMSIS-DAP Software Stack</div></div> <p> In the examples provided the MDK Version 5 USB Communication Stack has been used. However it is possible to use alternative USB stacks instead.</p> <p>The CMSIS-DAP Firmware is provided in the following directory structure.</p> <table class="doxtable"> <tr> <th align="left">Directory </th><th align="left">Description </th></tr> <tr> <td align="left">.\CMSIS\DAP\Firmware\Config </td><td align="left">CMSIS-DAP Firmware configuration </td></tr> <tr> <td align="left">.\CMSIS\DAP\Firmware\Examples </td><td align="left">CMSIS-DAP Firmware adapted to various Debug Units </td></tr> <tr> <td align="left">.\CMSIS\DAP\Firmware\Include </td><td align="left">CMSIS-DAP Firmware header file </td></tr> <tr> <td align="left">.\CMSIS\DAP\Firmware\Source </td><td align="left">CMSIS-DAP Firmware source code </td></tr> <tr> <td align="left">.\CMSIS\DAP\Firmware\Template </td><td align="left">Interface Templates for MDK Version 5 middleware </td></tr> </table> <h2>Debug Access </h2> <dl class="section note"><dt>Note</dt><dd>ARM plans to provide the <b>RDDI-DAP Access DLL</b> that connects a debugger to the CMSIS-DAP Firmware. However as the DAP registers are standard in all Cortex devices, the debug access is well understood by the industry.</dd></dl> <h2>Validation </h2> <p>CMSIS-DAP compliant Debug Units must be validated using the scripts provided in <a class="el" href="group__DAP__Validate__gr.html">Validate Debug Unit</a>.</p> <hr/> </div></div><!-- contents --> </div><!-- doc-content --> <!-- start footer part --> <div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> <ul> <li class="footer">Generated on Wed Feb 8 2017 10:20:42 for CMSIS-DAP by ARM Ltd. All rights reserved. <!-- <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.6 --> </li> </ul> </div> </body> </html>