153 lines
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153 lines
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<title>CMSIS-DAP: Atomic Commands</title>
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<div id="projectname">CMSIS-DAP
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 <span id="projectnumber">Version 2.0.0</span>
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<div id="projectbrief">Interface Firmware for CoreSight Debug Access Port</div>
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<div class="title">Atomic Commands<div class="ingroups"><a class="el" href="group__DAP__Commands__gr.html">CMSIS-DAP Commands</a></div></div> </div>
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<p>Execute atomic commands.
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<a href="#details">More...</a></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="groups"></a>
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Content</h2></td></tr>
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<tr class="memitem:group__DAP__ExecuteCommands__gr"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__DAP__ExecuteCommands__gr.html">DAP_ExecuteCommands</a></td></tr>
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<tr class="memdesc:group__DAP__ExecuteCommands__gr"><td class="mdescLeft"> </td><td class="mdescRight">Execute multiple DAP commands from a single packet. <br/></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:group__DAP__QueueCommands__gr"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__DAP__QueueCommands__gr.html">DAP_QueueCommands</a></td></tr>
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<tr class="memdesc:group__DAP__QueueCommands__gr"><td class="mdescLeft"> </td><td class="mdescRight">Queue multiple DAP commands provided in a multiple packets. <br/></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Description</h2>
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<p>Execute atomic commands. </p>
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<p>CMSIS-DAP command set is extended with two top level commands that allow the execution of multiple DAP commands further USB communication. Executing multiple CMSIS-DAP commands is typically a requirement at the reset time of some devices. The sequence after reset can be time critical and any USB communication would violate the available time window.</p>
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<ul>
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<li><a class="el" href="group__DAP__ExecuteCommands__gr.html">DAP_ExecuteCommands</a> : execute multiple DAP commands from a single command request</li>
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<li><a class="el" href="group__DAP__QueueCommands__gr.html">DAP_QueueCommands</a> : queue of multiple DAP commands before execution</li>
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</ul>
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<p>These two DAP commands are used to collect several other DAP commands before execution. Packet Size and Packet Count limitation (as reported via <a class="el" href="group__DAP__Info.html">DAP_Info</a>) must be respected by the debugger.</p>
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<dl class="section note"><dt>Note</dt><dd>The <a class="el" href="group__DAP__atomic__gr.html">Atomic Commands</a> are only available when <a class="el" href="group__DAP__Info.html">DAP_Info</a> with ID=0xF0 (Capabilities) returns in <b>Info</b> - Bit 4: <b>1 = Atomic Commands</b>. </dd></dl>
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<li class="footer">Generated on Wed Aug 1 2018 17:12:11 for CMSIS-DAP by Arm Ltd. All rights reserved.
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