173 lines
7.7 KiB
HTML
173 lines
7.7 KiB
HTML
<!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>DAP_SWD_Sequence</title>
|
|
<title>CMSIS-DAP: DAP_SWD_Sequence</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 2.0.0</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><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('group__DAP__SWD__Sequence.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">DAP_SWD_Sequence<div class="ingroups"><a class="el" href="group__DAP__swd__gr.html">SWD Commands</a></div></div> </div>
|
|
</div><!--header-->
|
|
<div class="contents">
|
|
|
|
<p>Generate SWD sequence and output on SWDIO or capture input from SWDIO data.
|
|
<a href="#details">More...</a></p>
|
|
<p>Generate SWD sequence and output on SWDIO or capture input from SWDIO data. </p>
|
|
<dl class="section note"><dt>Note</dt><dd>The <a class="el" href="group__DAP__SWD__Sequence.html">DAP_SWD_Sequence</a> is available for CMSIS-DAP version 1.2 and higher. Refer to <a class="el" href="group__DAP__Info.html">DAP_Info</a> for more information on how to query the CMSIS-DAP version.</dd></dl>
|
|
<p>The <b>DAP_SWD_Sequence Command</b> is used to generate special sequences in SWD mode on the pins SWCLK and SWDIO. For example, for SWD multi-drop target selection (see picture) it is required to put the SWDIO pin to input mode (where it is not driven).</p>
|
|
<div class="image">
|
|
<img src="SWD_Sequence.png" alt="SWD_Sequence.png"/>
|
|
<div class="caption">
|
|
SWD sequence for multi-drop target selection</div></div>
|
|
<ul>
|
|
<li>For mode=0 (output: SWDIO is driven), the data for the SWDIO pin are part of the <b>DAP_SWD_Sequence Command</b>.</li>
|
|
<li>For mode=1 (input: SWDIO is not driven), the data from the SWDIO pin are captured and returned as part of the <b>DAP_SWD_Sequence Response</b>.</li>
|
|
</ul>
|
|
<p><b>DAP_SWD_Sequence Command</b>: </p>
|
|
<div class="fragment"><div class="line">| BYTE | BYTE **********| BYTE *********| BYTE ******|</div>
|
|
<div class="line">> 0x1D | Sequence Count | Sequence Info | SWDIO Data |</div>
|
|
<div class="line">|******|****************|<span class="comment">///////////////|++++++++++++|</span></div>
|
|
</div><!-- fragment --><ul>
|
|
<li><b>Sequence Count</b>: Number of Sequences</li>
|
|
<li><b>Sequence Info</b>: Contains number of SWCLK cycles and SWDIO mode<ul>
|
|
<li>Bit 5 .. 0: Number of TCK cycles: 1 .. 64 (64 encoded as 0)</li>
|
|
<li>Bit 6: reserved</li>
|
|
<li>Bit 7: mode: 0=output (SWDIO Data in command), 1=input (SWDIO Data in response)</li>
|
|
</ul>
|
|
</li>
|
|
<li><b>SWDIO Data</b> (only for output mode): Data generated on SWDIO<ul>
|
|
<li>One bit for each TCK cycle</li>
|
|
<li>LSB transmitted first, padded to BYTE boundary</li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
<p><b>DAP_SWD_Sequence Response</b>: </p>
|
|
<div class="fragment"><div class="line">| BYTE | BYTE **| BYTE ******|</div>
|
|
<div class="line">< 0x1D | Status | SWDIO Data |</div>
|
|
<div class="line">|******|********|++++++++++++|</div>
|
|
</div><!-- fragment --><ul>
|
|
<li><b>SWDIO Data</b> (only for input mode): Data captured from SWDIO<ul>
|
|
<li>One bit for each SWCLK cycle for input mode</li>
|
|
<li>LSB received first, padded to BYTE boundary</li>
|
|
</ul>
|
|
</li>
|
|
<li><b>Status:</b> <a class="el" href="group__DAP__Response__Status.html">Response Status</a> </li>
|
|
</ul>
|
|
</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 Aug 1 2018 17:12:11 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>
|