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<h2>
<a name="1207137"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">poke</font>
</h2><hr>
<p>
<a name="1267300"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Write to target memory address</font>
</p>
<h3>
<a name="1207139"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Command type</font>
</h3>
<p>
<a name="1226983"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Low level, hardware configuration</font>
</p>
<h3>
<a name="1207141"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Tool environment</font>
</h3>
<p>
<a name="1228083"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><strong>st20cc</strong>, <strong>st20run</strong>, <strong>st20sim</strong></font>
</p>
<h3>
<a name="1207142"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Synopsis</font>
</h3>
<a name="1207143"> </a><font size=2 face=Courier><strong>poke <font size=2 face=Courier><strong><em>address</em></strong></font> <font size=2 face=Courier><strong><em>value</em></strong></font> [-d]<br></strong></font>
<h3>
<a name="1236354"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Arguments</font>
</h3>
<p>
<a name="1236371"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong><em>address</em></strong></font></b></font>
<br>
<dl><dl> <dl>
<dt> <a name="1236373"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The byte aligned address to be written to</font>
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</dl></dl>
<p>
<a name="1236364"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong><em>value</em></strong></font></b></font>
<br>
<dl><dl> <dl>
<dt> <a name="1236366"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The integer value to be written at <font size=2 face=Courier><strong><em>address</em></strong></font></font>
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</dl></dl>
<h3>
<a name="1207148"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Options</font>
</h3>
<p>
<a name="1230076"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong>-d[evice]</strong></font></b></font>
<br>
<dl><dl> <dl>
<dt> <a name="1230078"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Do a device memory access</font>
</dl>
</dl></dl>
<h3>
<a name="1207151"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Debugger context</font>
</h3>
<p>
<a name="1207152"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The <font size=2 face=Courier><strong>poke</strong></font> command accesses the debugger context for the default address space.</font>
</p>
<h3>
<a name="1207153"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Description</font>
</h3>
<p>
<a name="1207154"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">When used with <strong>st20run</strong>, the command <font size=2 face=Courier><strong>poke</strong></font> writes the <font size=2 face=Courier><strong><em>value</em></strong></font> to the specified <font size=2 face=Courier><strong><em>address</em></strong></font> on the connected target.</font>
</p>
<p>
<a name="1247582"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">When used as input to <strong>st20cc</strong> during ROM image generation, the command <font size=2 face=Courier><strong>poke</strong></font> causes the <font size=2 face=Courier><strong><em>address</em></strong></font> and <font size=2 face=Courier><strong><em>value</em></strong></font> to be stored in a table in the ROM image. The ROM loader code performs each poke in this table, that is writes each value to its associated address, before any code or data is moved to RAM. The loader executes the pokes in the order they are given in the configuration <font size=2 face=Courier><strong>.cfg</strong></font> file. When used as input to <strong>st20cc</strong> during linked unit generation, this command has no effect.</font>
</p>
<p>
<a name="1207156"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">This mechanism can be used to initialize the processor early in the boot cycle, for example it can be used to program the EMI registers. The <font face="Verdana, Arial, Helvetica, sans-serif"><b>device</b></font> option directs the debugger to perform a device memory access.</font>
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<h3>
<a name="1207157"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Example</font>
</h3>
<p>
<a name="1207158"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The following example shows the <font size=2 face=Courier><strong>poke</strong></font> command being used from <font size=2 face=Courier><strong>st20run</strong></font>:</font>
</p>
<a name="1207159"> </a><font size=2 face=Courier><strong>>poke 0x80000140 0xfeedface<br>>peek 0x80000140<br>0xfeedface<br></strong></font>
<h3>
<a name="1207162"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">See also</font>
</h3>
<p>
<a name="1207172"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><a href="comman40.htm#1205993"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>fill</i></font></a>, <a href="comman60.htm#1206799"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>memset</i></font></a>, <a href="comman64.htm#1206924"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>modify</i></font></a></font>
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