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<p style="text-align: center;" align="center"><span
style="font-size: 18pt;">SysTickPeriodicInt</span><br>
<table class="MsoNormalTable"
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<p><b><span style="font-size: 18pt;">Readme</b></span>
<br> &nbsp;<br>
This is a C language project that implements periodic
interrupts using SysTick. The red LCD (PA0) on the LaunchPad
toggles within the SysTick ISR. <br>&nbsp;<br>
In the following figure, PB27 is toggled within the SysTick ISR, showing
the interrupt period is 1ms. PA0 is toggled in the main program,
so at this scale, PA0 toggles faster than can be captured.</p>
<p class="PictureWide"><span lang="en-US"><img src="SysTickPeriodicInt.png"></span></p>
<p>
Next figure shows the same two signals zoomed in.
The overall activity is PA0 toggling, ISR is invoked, PB27 is toggled in the ISR,
the main program is resumed, and the toggling on PA0 continues.
The recording shows the entire ISR consumed about 1.5us to process.
</p>
<p class="PictureWide"><span lang="en-US"><img src="SysTickPeriodicIntZoomIn.png"
></span></p>
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<p><b><span style="font-size: 18pt;">Hardware Required</b></span>
<br>
<ul>
<li>MSPM0G3507 LaunchPad&trade; Development Kit (LP-MSPM0G3507)</li>
</ul>
<b><span style="font-size: 18pt;">Pin assignments</b></span>
<br>
<ul>
<li>Output: PA0 is red LED1, index 0 in IOMUX PINCM table</li>
</ul>
<b><span style="font-size: 18pt;">LaunchPad Jumpers</b></span>
<br>
<ul>
<li>J5: Connects PB22 to blue LED2</li>
<li>J6: Connects PB26 to red LED2</li>
<li>J7: Connects PB27 to green LED2</li>
</ul>
</p> </td>
</tr>
</tbody>
</table>
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<p>
Simplified BSD License (FreeBSD License)
Copyright &copy; 2023, Jonathan Valvano, All rights reserved.<br>
&nbsp;<br>
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:<br>
<ol>
<li>Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.</li>
<li>Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.</li></ol>
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.<br>
&nbsp;<br>
The views and conclusions contained in the software and documentation are
those of the authors and should not be interpreted as representing official
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<br> &nbsp;
</p>
<p>For more information, see <a href="http://users.ece.utexas.edu/~valvano/">
http://users.ece.utexas.edu/~valvano/</a>.
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