377 lines
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377 lines
19 KiB
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<title>RTOS_MSPM0: PWMA1</title>
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<div id="projectname">RTOS_MSPM0
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 <span id="projectnumber">1.1</span>
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<div id="projectbrief">ECE445M starter code</div>
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<a href="#files">Files</a> |
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<a href="#define-members">Macros</a> |
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<a href="#func-members">Functions</a> </div>
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<div class="headertitle">
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<div class="title">PWMA1</div> </div>
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</div><!--header-->
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<div class="contents">
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<p>Pulse width modulation.
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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="files"></a>
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Files</h2></td></tr>
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<tr class="memitem:_p_w_m_a1_8h"><td class="memItemLeft" align="right" valign="top">file  </td><td class="memItemRight" valign="bottom"><a class="el" href="_p_w_m_a1_8h.html">PWMA1.h</a></td></tr>
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<tr class="memdesc:_p_w_m_a1_8h"><td class="mdescLeft"> </td><td class="mdescRight">Pulse width modulation. <br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
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Macros</h2></td></tr>
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<tr class="memitem:ga7497b42df7df560ce90e9b40508a5036"><td class="memItemLeft" align="right" valign="top"><a id="ga7497b42df7df560ce90e9b40508a5036"></a>
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#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_w_m_a1.html#ga7497b42df7df560ce90e9b40508a5036">PWMUSELFCLK</a>   2</td></tr>
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<tr class="memdesc:ga7497b42df7df560ce90e9b40508a5036"><td class="mdescLeft"> </td><td class="mdescRight">use PWMUSELFCLK to select LFCLK <br /></td></tr>
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<tr class="separator:ga7497b42df7df560ce90e9b40508a5036"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga5bc0918f95e19ab8f7c11d2b850331d8"><td class="memItemLeft" align="right" valign="top"><a id="ga5bc0918f95e19ab8f7c11d2b850331d8"></a>
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#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_w_m_a1.html#ga5bc0918f95e19ab8f7c11d2b850331d8">PWMUSEMFCLK</a>   4</td></tr>
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<tr class="memdesc:ga5bc0918f95e19ab8f7c11d2b850331d8"><td class="mdescLeft"> </td><td class="mdescRight">use PWMUSEMFCLK to select MFCLK <br /></td></tr>
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<tr class="separator:ga5bc0918f95e19ab8f7c11d2b850331d8"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga5a97982467a525ef6074c48f5841efdd"><td class="memItemLeft" align="right" valign="top"><a id="ga5a97982467a525ef6074c48f5841efdd"></a>
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#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_w_m_a1.html#ga5a97982467a525ef6074c48f5841efdd">PWMUSEBUSCLK</a>   8</td></tr>
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<tr class="memdesc:ga5a97982467a525ef6074c48f5841efdd"><td class="mdescLeft"> </td><td class="mdescRight">use PWMUSEBUSCLK to select bus CLK <br /></td></tr>
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<tr class="separator:ga5a97982467a525ef6074c48f5841efdd"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:ga291dc7daa7e613fa05ac91ed1393c22c"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_w_m_a1.html#ga291dc7daa7e613fa05ac91ed1393c22c">PWMA1_Init</a> (uint32_t timerClkSrc, uint32_t timerClkPrescale, uint32_t period, uint32_t duty0, uint32_t duty1)</td></tr>
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<tr class="memdesc:ga291dc7daa7e613fa05ac91ed1393c22c"><td class="mdescLeft"> </td><td class="mdescRight">Initialize PWMA1. <a href="group___p_w_m_a1.html#ga291dc7daa7e613fa05ac91ed1393c22c">More...</a><br /></td></tr>
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<tr class="separator:ga291dc7daa7e613fa05ac91ed1393c22c"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gac4a21e9491bb109052b63ca5acee0bf8"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_w_m_a1.html#gac4a21e9491bb109052b63ca5acee0bf8">PWMA1_SetDuty</a> (uint32_t duty0, uint32_t duty1)</td></tr>
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<tr class="memdesc:gac4a21e9491bb109052b63ca5acee0bf8"><td class="mdescLeft"> </td><td class="mdescRight">Set duty cycles. <a href="group___p_w_m_a1.html#gac4a21e9491bb109052b63ca5acee0bf8">More...</a><br /></td></tr>
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<tr class="separator:gac4a21e9491bb109052b63ca5acee0bf8"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gaa6dee984373940a668fa6adc73ad23d1"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_w_m_a1.html#gaa6dee984373940a668fa6adc73ad23d1">PWMA1_Forward</a> (uint32_t duty0)</td></tr>
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<tr class="memdesc:gaa6dee984373940a668fa6adc73ad23d1"><td class="mdescLeft"> </td><td class="mdescRight">Motor forward. <a href="group___p_w_m_a1.html#gaa6dee984373940a668fa6adc73ad23d1">More...</a><br /></td></tr>
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<tr class="separator:gaa6dee984373940a668fa6adc73ad23d1"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga3cde08a70f22f4de286ba41817330ff9"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_w_m_a1.html#ga3cde08a70f22f4de286ba41817330ff9">PWMA1_Backward</a> (uint32_t duty1)</td></tr>
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<tr class="memdesc:ga3cde08a70f22f4de286ba41817330ff9"><td class="mdescLeft"> </td><td class="mdescRight">Motor backward. <a href="group___p_w_m_a1.html#ga3cde08a70f22f4de286ba41817330ff9">More...</a><br /></td></tr>
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<tr class="separator:ga3cde08a70f22f4de286ba41817330ff9"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga279ac3ba48584016b385057fe6f298e2"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_w_m_a1.html#ga279ac3ba48584016b385057fe6f298e2">PWMA1_Break</a> (void)</td></tr>
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<tr class="memdesc:ga279ac3ba48584016b385057fe6f298e2"><td class="mdescLeft"> </td><td class="mdescRight">Motor break. <a href="group___p_w_m_a1.html#ga279ac3ba48584016b385057fe6f298e2">More...</a><br /></td></tr>
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<tr class="separator:ga279ac3ba48584016b385057fe6f298e2"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga4da15ad1cd99b7a86469488c041f9349"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___p_w_m_a1.html#ga4da15ad1cd99b7a86469488c041f9349">PWMA1_Coast</a> (void)</td></tr>
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<tr class="memdesc:ga4da15ad1cd99b7a86469488c041f9349"><td class="mdescLeft"> </td><td class="mdescRight">Motor coast. <a href="group___p_w_m_a1.html#ga4da15ad1cd99b7a86469488c041f9349">More...</a><br /></td></tr>
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<tr class="separator:ga4da15ad1cd99b7a86469488c041f9349"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<p>Pulse width modulation. </p>
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<a class="anchor" id="PWMA1pins2"></a>
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<table class="doxtable">
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<caption>PWM pins on the MSPM0G3507</caption>
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<tr>
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<th>Pin </th><th>Description </th></tr>
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<tr>
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<td>PB4 </td><td>CCP0 PWM output </td></tr>
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<tr>
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<td>PB1 </td><td>CCP1 PWM output </td></tr>
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</table>
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<h2 class="groupheader">Function Documentation</h2>
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<a id="ga3cde08a70f22f4de286ba41817330ff9"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga3cde08a70f22f4de286ba41817330ff9">◆ </a></span>PWMA1_Backward()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void PWMA1_Backward </td>
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<td>(</td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>duty1</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Motor backward. </p>
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<p>Set duty cycle on PB1 (time low), and set PB4 high. </p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">duty1</td><td>sets the duty cycle on PB1 </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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<dl class="section note"><dt>Note</dt><dd>assumes PWMA1_Init was called </dd></dl>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="group___p_w_m_a1.html#ga291dc7daa7e613fa05ac91ed1393c22c" title="Initialize PWMA1.">PWMA1_Init</a> </dd></dl>
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</div>
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</div>
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<a id="ga279ac3ba48584016b385057fe6f298e2"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga279ac3ba48584016b385057fe6f298e2">◆ </a></span>PWMA1_Break()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void PWMA1_Break </td>
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<td>(</td>
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<td class="paramtype">void </td>
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<td class="paramname"></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Motor break. </p>
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<p>Set PB1 high, and set PB4 high. </p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">none</td><td></td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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<dl class="section note"><dt>Note</dt><dd>assumes PWMA1_Init was called </dd></dl>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="group___p_w_m_a1.html#ga291dc7daa7e613fa05ac91ed1393c22c" title="Initialize PWMA1.">PWMA1_Init</a> </dd></dl>
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</div>
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</div>
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<a id="ga4da15ad1cd99b7a86469488c041f9349"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga4da15ad1cd99b7a86469488c041f9349">◆ </a></span>PWMA1_Coast()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void PWMA1_Coast </td>
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<td>(</td>
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<td class="paramtype">void </td>
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<td class="paramname"></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Motor coast. </p>
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<p>Set PB1 low, and set PB4 low. Goes into sleep mode </p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">none</td><td></td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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<dl class="section note"><dt>Note</dt><dd>assumes PWMA1_Init was called </dd></dl>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="group___p_w_m_a1.html#ga291dc7daa7e613fa05ac91ed1393c22c" title="Initialize PWMA1.">PWMA1_Init</a> </dd></dl>
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</div>
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</div>
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<a id="gaa6dee984373940a668fa6adc73ad23d1"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#gaa6dee984373940a668fa6adc73ad23d1">◆ </a></span>PWMA1_Forward()</h2>
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<div class="memitem">
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<td class="memname">void PWMA1_Forward </td>
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<td>(</td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>duty0</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Motor forward. </p>
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<p>Set duty cycle on PB4 (time low), and set PB1 high. </p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">duty0</td><td>sets the duty cycle on PB4 </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
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<dl class="section note"><dt>Note</dt><dd>assumes PWMA1_Init was called </dd></dl>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="group___p_w_m_a1.html#ga291dc7daa7e613fa05ac91ed1393c22c" title="Initialize PWMA1.">PWMA1_Init</a> </dd></dl>
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</div>
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</div>
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<a id="ga291dc7daa7e613fa05ac91ed1393c22c"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga291dc7daa7e613fa05ac91ed1393c22c">◆ </a></span>PWMA1_Init()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void PWMA1_Init </td>
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<td>(</td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>timerClkSrc</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>timerClkPrescale</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>period</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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||
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>duty0</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
|
||
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<td class="paramname"><em>duty1</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Initialize PWMA1. </p>
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<p>Initialize PWMA1 outputs on PB4, PB1. Rising edge synchronized. timerClkDivRatio = 1. Once started, hardware will continuously output the waves.</p><ul>
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||
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<li>timerClkSrc =<ul>
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<li>2 for 32768 Hz LFCLK</li>
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<li>4 for 4MHz MFCLK (not tested)</li>
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||
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<li>8 for 80/32/4 BUSCLK</li>
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||
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</ul>
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||
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</li>
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||
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<li>A0/A1 is on Power domain PD1<ul>
|
||
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<li>32MHz bus clock, BUSCLK clock is 32MHz</li>
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<li>40MHz bus clock, BUSCLK clock is ULPCLK 20MHz</li>
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||
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<li>80MHz bus clock, BUSCLK clock is ULPCLK 40MHz</li>
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||
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</ul>
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||
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</li>
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||
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<li>PWMFreq = (timerClkSrc / (timerClkDivRatio * (timerClkPrescale + 1) * period))<ul>
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||
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<li>For example, source=LFCLK, prescale = 0, period = 1000, PWM frequency = 32.768 Hz</li>
|
||
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<li>For example, source=BUSCLK, 80MHz bus, prescale=39, period = 10000, PWM frequency = 200Hz</li>
|
||
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</ul>
|
||
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</li>
|
||
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</ul>
|
||
|
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<dl class="params"><dt>Parameters</dt><dd>
|
||
|
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<table class="params">
|
||
|
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<tr><td class="paramname">timerClkSrc</td><td>is 2 4 or 8 </td></tr>
|
||
|
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<tr><td class="paramname">timerClkPrescale</td><td>divide clock by timerClkPrescale+1, 0 to 255 </td></tr>
|
||
|
|
<tr><td class="paramname">period</td><td>sets the PWM period </td></tr>
|
||
|
|
<tr><td class="paramname">duty0</td><td>sets the duty cycle on PB4 </td></tr>
|
||
|
|
<tr><td class="paramname">duty1</td><td>sets the duty cycle on PB1 </td></tr>
|
||
|
|
</table>
|
||
|
|
</dd>
|
||
|
|
</dl>
|
||
|
|
<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
|
||
|
|
<dl class="section note"><dt>Note</dt><dd>Will call LaunchPad_Init to reset and activate power </dd></dl>
|
||
|
|
<dl class="section see"><dt>See also</dt><dd><a class="el" href="group___p_w_m_a1.html#gac4a21e9491bb109052b63ca5acee0bf8" title="Set duty cycles.">PWMA1_SetDuty</a> </dd></dl>
|
||
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|
||
|
|
</div>
|
||
|
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</div>
|
||
|
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<a id="gac4a21e9491bb109052b63ca5acee0bf8"></a>
|
||
|
|
<h2 class="memtitle"><span class="permalink"><a href="#gac4a21e9491bb109052b63ca5acee0bf8">◆ </a></span>PWMA1_SetDuty()</h2>
|
||
|
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|
||
|
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<div class="memitem">
|
||
|
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<div class="memproto">
|
||
|
|
<table class="memname">
|
||
|
|
<tr>
|
||
|
|
<td class="memname">void PWMA1_SetDuty </td>
|
||
|
|
<td>(</td>
|
||
|
|
<td class="paramtype">uint32_t </td>
|
||
|
|
<td class="paramname"><em>duty0</em>, </td>
|
||
|
|
</tr>
|
||
|
|
<tr>
|
||
|
|
<td class="paramkey"></td>
|
||
|
|
<td></td>
|
||
|
|
<td class="paramtype">uint32_t </td>
|
||
|
|
<td class="paramname"><em>duty1</em> </td>
|
||
|
|
</tr>
|
||
|
|
<tr>
|
||
|
|
<td></td>
|
||
|
|
<td>)</td>
|
||
|
|
<td></td><td></td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
</div><div class="memdoc">
|
||
|
|
|
||
|
|
<p>Set duty cycles. </p>
|
||
|
|
<p>Set duty cycles on PB4, PB1. </p><dl class="params"><dt>Parameters</dt><dd>
|
||
|
|
<table class="params">
|
||
|
|
<tr><td class="paramname">duty0</td><td>sets the duty cycle on PB4 </td></tr>
|
||
|
|
<tr><td class="paramname">duty1</td><td>sets the duty cycle on PB1 </td></tr>
|
||
|
|
</table>
|
||
|
|
</dd>
|
||
|
|
</dl>
|
||
|
|
<dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
|
||
|
|
<dl class="section note"><dt>Note</dt><dd>assumes PWMA1_Init was called </dd></dl>
|
||
|
|
<dl class="section see"><dt>See also</dt><dd><a class="el" href="group___p_w_m_a1.html#ga291dc7daa7e613fa05ac91ed1393c22c" title="Initialize PWMA1.">PWMA1_Init</a> </dd></dl>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</div><!-- contents -->
|
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<!-- start footer part -->
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