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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic topic" role="article" aria-labelledby="ariaid-title1"><span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/xpwm/xpwm_config.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">参数配置</h1><div class="date inPage">5 Dec 2024</div><div style="color: gray;">
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Read time: 1 minute(s)
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</div><div class="- topic/body body"><section class="- topic/section section" id="id__ref-lite-xpwm-cfg" data-ofbid="id__ref-lite-xpwm-cfg"><h2 class="- topic/title title sectiontitle">驱动配置</h2>
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<ol class="- topic/ol ol arabic simple" id="id__ol_dzx_nyh_ddc" data-ofbid="id__ol_dzx_nyh_ddc"><li class="- topic/li li" data-ofbid="d89914e23__20250121171530">
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<p class="- topic/p p" data-ofbid="d89914e25__20250121171530">在 <span class="- topic/ph ph">Luban-Lite</span> 根目录下执行 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">scons --menuconfig</span>，进入 menuconfig
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的功能配置界面。</p>
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</li><li class="- topic/li li" data-ofbid="d89914e34__20250121171530">
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<p class="- topic/p p" data-ofbid="d89914e36__20250121171530">选择需要的 XPWM/PWM 通道。以下打开了部分 XPWM/PWM 通道：</p>
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</li></ol>
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<p class="- topic/p p" data-ofbid="d89914e40__20250121171530">3. 在 menuconfig 界面中打开 RT-Thread 的 XPWM/PWM 设备驱动框架。 使用 RT-Thread 内核的时，PWM/XPWM 驱动需要依赖
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RT-Thread 的 PWM 设备驱动框架。</p>
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<div class="- topic/note note tip note_tip" id="id__note_dnn_qn3_ddc" data-ofbid="id__note_dnn_qn3_ddc"><span class="note__title">提示：</span>
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<p class="- topic/p p" data-ofbid="d89914e45__20250121171530">为了简化使用，步骤 2 的 <span class="+ topic/ph ui-d/uicontrol ph uicontrol">Using XPWMx/PWMx</span> 会自动打开 RT-Thread 的 PWM 设备驱动框架。</p>
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</div>
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</section><section class="- topic/section section" id="id__pwm" data-ofbid="id__pwm"><h2 class="- topic/title title sectiontitle">PWM 自定义参数</h2>
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<p class="- topic/p p" data-ofbid="d89914e57__20250121171530">XPWM 驱动在 drv_xpwm.c 中提供了一个接口 <code class="+ topic/ph pr-d/codeph ph codeph">aic_xpwm_default_action()</code> 来配置 XPWM/PWM
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各通道的行为参数。</p>
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<p class="- topic/p p" data-ofbid="d89914e63__20250121171530">如果因为板级硬件设计的差异，和实际应用场景不同，可以对这些参数进行调整。参数的定义如下表：</p>
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<div class="table-container"><table class="- topic/table table frame-all" id="id__table_ezx_nyh_ddc" data-ofbid="id__table_ezx_nyh_ddc" data-cols="4"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 1</span><span class="table--title-label-punctuation">. </span></span><span class="table--title"></span></caption><colgroup><col style="width:19.038817005545287%"/><col style="width:18.484288354898336%"/><col style="width:36.04436229205176%"/><col style="width:26.432532347504615%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_ezx_nyh_ddc__entry__1">参数名称</th><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_ezx_nyh_ddc__entry__2">类型</th><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_ezx_nyh_ddc__entry__3">取值范围</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_ezx_nyh_ddc__entry__4">功能说明</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ezx_nyh_ddc__entry__1">default-level</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ezx_nyh_ddc__entry__2">正整数</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ezx_nyh_ddc__entry__3">[0, 1]</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ezx_nyh_ddc__entry__4">默认/初始电平</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_ezx_nyh_ddc__entry__1">polarity</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_ezx_nyh_ddc__entry__2">数据结构</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_ezx_nyh_ddc__entry__3">NORMAL/INVERSED</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_ezx_nyh_ddc__entry__4">使能模块后，输出信号状态</td></tr></tbody></table></div>
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</section><section class="- topic/section section" id="id__id3" data-ofbid="id__id3"><h2 class="- topic/title title sectiontitle">时钟配置</h2>
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<p class="- topic/p p" data-ofbid="d89914e108__20250121171530">XPWM 计数器为 32-bit 的计数器，计数器时钟由系统时钟分频得出，分频系数为 CLK_DIV。驱动中默认配置计数器时钟为 24MHz。</p>
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<div class=" wh_topic_toc "><div class="wh_topic_label">在本页上</div><ul><li class="section-item"><div class="section-title"><a href="#id__ref-lite-xpwm-cfg" data-tocid="id__ref-lite-xpwm-cfg">驱动配置</a></div></li><li class="section-item"><div class="section-title"><a href="#id__pwm" data-tocid="id__pwm">PWM 自定义参数</a></div></li><li class="section-item"><div class="section-title"><a href="#id__id3" data-tocid="id__id3">时钟配置</a></div></li></ul></div>
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