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<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-cn" lang="zh-cn" data-whc_version="26.0">
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<head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><meta name="description" content="RTC 时间丢失 现象 重启后，RTC 时间变成 1970-01-01 00:00:00。 原因分析 RTC 需要持续的供电，才能保持住配置的时间信息。可以按照以下流程逐个排查原因： 确认电源线是否有断开过。 确认是否安装有电池。 如有安装电池，确认电池的电量是否充足。 RTC 时间有误差 现象 RTC 模块的设计精度是 2 秒 / 3 天，即在长时间运行后，如果误差超过这个范围，说明 RTC ..."/><meta name="DC.rights.owner" content="(C) 版权 2025"/><meta name="copyright" content="(C) 版权 2025"/><meta name="generator" content="DITA-OT"/><meta name="DC.type" content="concept"/><meta name="DC.contributor" content="yan.wang"/><meta name="DC.date.modified" content="2024-12-13"/><meta name="DC.format" content="HTML5"/><meta name="DC.identifier" content="rtc_common_issues"/><meta name="DC.language" content="zh-CN"/><title>常见问题</title><!-- Build number 2023110923. --><meta name="wh-path2root" content="../../../"/><meta name="wh-toc-id" content=""/><meta name="wh-source-relpath" content="topics/sdk/rtc/rtc-common-issues.dita"/><meta name="wh-out-relpath" content="topics/sdk/rtc/rtc-common-issues.html"/>
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<link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-styles-web.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/notes.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-common.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-images.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/footnote.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/aic-web-watermark.css?buildId=2023110923"/><link rel="stylesheet" type="text/css" href="../../../webhelp/template/topic-body-list.css?buildId=2023110923"/></head>
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<body id="rtc_common_issues" class="wh_topic_page frmBody">
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跳转到主要内容
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<a href="http://www.artinchip.com" class=" wh_logo d-none d-sm-block "><img src="../../../company-logo-white.png" alt="RTOS SDK 使用指南SDK 指南文件"/></a>
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<div class=" wh_publication_title "><a href="../../../index.html"><span class="booktitle"><span class="ph mainbooktitle">RTOS SDK 使用指南</span><span class="ph booktitlealt">SDK 指南文件</span></span></a></div>
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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic concept/concept topic concept" 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/rtc/rtc-common-issues.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">常见问题</h1><div class="date inPage">13 Dec 2024</div><div style="color: gray;"></div><div class="- topic/body concept/conbody body conbody"><section class="- topic/section section" id="rtc_common_issues__rtc" data-ofbid="rtc_common_issues__rtc"><h2 class="- topic/title title sectiontitle">RTC 时间丢失</h2>
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<div class="- topic/div div"><strong class="+ topic/ph hi-d/b ph b">现象</strong><p class="- topic/p p" data-ofbid="d119629e30__20250121171558">重启后，RTC 时间变成 1970-01-01 00:00:00。</p></div>
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<div class="- topic/div div"><strong class="+ topic/ph hi-d/b ph b">原因分析</strong><div class="- topic/p p" data-ofbid="d119629e36__20250121171558">RTC 需要持续的供电，才能保持住配置的时间信息。可以按照以下流程逐个排查原因：<ol class="- topic/ol ol arabic simple" id="rtc_common_issues__ol_q3h_4wh_bdc" data-ofbid="rtc_common_issues__ol_q3h_4wh_bdc"><li class="- topic/li li" data-ofbid="d119629e39__20250121171558">
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<p class="- topic/p p" data-ofbid="d119629e41__20250121171558">确认电源线是否有断开过。</p>
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</li><li class="- topic/li li" data-ofbid="d119629e44__20250121171558">
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<p class="- topic/p p" data-ofbid="d119629e46__20250121171558">确认是否安装有电池。</p>
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</li><li class="- topic/li li" data-ofbid="d119629e49__20250121171558">
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<p class="- topic/p p" data-ofbid="d119629e51__20250121171558">如有安装电池，确认电池的电量是否充足。</p>
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</li></ol></div></div>
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</section><section class="- topic/section section" id="rtc_common_issues__id4" data-ofbid="rtc_common_issues__id4"><h2 class="- topic/title title sectiontitle">RTC 时间有误差</h2>
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<div class="- topic/div div"><strong class="+ topic/ph hi-d/b ph b">现象</strong><p class="- topic/p p" data-ofbid="d119629e63__20250121171558">RTC 模块的设计精度是 2 秒 / 3 天，即在长时间运行后，如果误差超过这个范围，说明 RTC 时间的误差需要校准。</p></div>
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<div class="- topic/div div"><strong class="+ topic/ph hi-d/b ph b">解决方法</strong><p class="- topic/p p" data-ofbid="d119629e69__20250121171558">实测 32K 晶振的时钟频率，将频率值填入 DTS 的参数 <code class="+ topic/ph pr-d/codeph ph codeph">clock-rate</code>，详见
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<a xml:lang="zh-CN" lang="zh-CN" class="- topic/xref xref" href="rtc-config-guide.html#rtc_configuration__ref-to-lite-rtc-cfg">rtc-config-guide.html#rtc_configuration__ref-to-lite-rtc-cfg</a>。</p></div>
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</section></div></article></main></div>
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<div id="wh_topic_toc_content">
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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="#rtc_common_issues__rtc" data-tocid="rtc_common_issues__rtc">RTC 时间丢失</a></div></li><li class="section-item"><div class="section-title"><a href="#rtc_common_issues__id4" data-tocid="rtc_common_issues__id4">RTC 时间有误差</a></div></li></ul></div>
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Update Time: 2025-01-21
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