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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/pm/pm_faq.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">常见问题</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;"></div><div class="- topic/body body"><section class="- topic/section section" id="id__id2" data-ofbid="id__id2"><h2 class="- topic/title title sectiontitle">无法进入休眠</h2>
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<div class="- topic/p p" data-ofbid="d93214e24__20250121171531">无法进入休眠的原因及可能的解决方法如下：<ul class="- topic/ul ul" id="id__ul_npw_vdb_ddc" data-ofbid="id__ul_npw_vdb_ddc"><li class="- topic/li li" data-ofbid="d93214e27__20250121171531">
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<p class="- topic/p p" data-ofbid="d93214e29__20250121171531">检查休眠模式的申请和释放是否有成对使用，一般无法进入休眠是因为申请的次数大于释放的次数。可以通过 pm_dump 来辅助调试，详情可查看
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<a class="- topic/xref xref" href="pm_debug_guide.html">调试指南</a>。</p>
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</li><li class="- topic/li li" data-ofbid="d93214e36__20250121171531">
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<p class="- topic/p p" data-ofbid="d93214e38__20250121171531">PM 框架在初始化时，会默认申请 NONE 模式，因此在应用代码中需要注意释放 NONE 模式。例如，在进入休眠前，确保已经释放了默认申请的
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NONE 模式。</p>
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</li></ul></div>
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</section><section class="- topic/section section" id="id__id3" data-ofbid="id__id3"><h2 class="- topic/title title sectiontitle">休眠后无法唤醒</h2>
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<div class="- topic/p p" data-ofbid="d93214e47__20250121171531">
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<ul class="- topic/ul ul" id="id__ul_qp5_3gb_ddc" data-ofbid="id__ul_qp5_3gb_ddc"><li class="- topic/li li" data-ofbid="d93214e50__20250121171531">检查中断源的中断是否触发，确保用于唤醒系统的中断源确实触发了中断。可以通过调试工具或日志记录来确认中断是否被正确触发。</li><li class="- topic/li li" data-ofbid="d93214e52__20250121171531">检查该中断源是否是唤醒源。确保配置的中断源确实是唤醒源。有些中断可能只是普通中断，而不是唤醒源。</li></ul>
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</div>
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</section><section class="- topic/section section" id="id__id4" data-ofbid="id__id4"><h2 class="- topic/title title sectiontitle"> 唤醒后又立即进入休眠</h2>
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<p class="- topic/p p" data-ofbid="d93214e61__20250121171531">当 CPU
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被中断唤醒时，会执行唤醒流程，然后会执行中断源的中断处理函数，此时需要执行申请
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NONE
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模式的操作，以确保
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CPU 再次执行 idle 线程时，不会再次进入到休眠流程。否则，CPU 会在 idle 线程再次进入休眠，
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就会产生唤醒后又立即进入了休眠的现象。</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__id2" data-tocid="id__id2">无法进入休眠</a></div></li><li class="section-item"><div class="section-title"><a href="#id__id3" data-tocid="id__id3">休眠后无法唤醒</a></div></li><li class="section-item"><div class="section-title"><a href="#id__id4" data-tocid="id__id4"> 唤醒后又立即进入休眠</a></div></li></ul></div>
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