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href="../../../topics/sdk/rtc/rtc-design-intro.html" id="rtc_design_intro-d4445e3592-link">设计说明</a></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem" class="active"><div data-tocid="rtc_key_procedures-d4445e3606" class="topicref" data-id="rtc_key_procedures" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/rtc/rtc-key-procedure.html" id="rtc_key_procedures-d4445e3606-link">关键流程设计</a></div></div></li><li role="treeitem"><div data-tocid="rtc_data_structure-d4445e3620" class="topicref" data-id="rtc_data_structure" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/rtc/rtc-data-structure.html" id="rtc_data_structure-d4445e3620-link">数据结构设计</a></div></div></li><li role="treeitem"><div data-tocid="rtc_interface_design-d4445e3634" class="topicref" data-id="rtc_interface_design" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/rtc/rtc-interface-design.html" id="rtc_interface_design-d4445e3634-link">接口设计</a></div></div></li><li role="treeitem"><div data-tocid="rtc_demo-d4445e3648" class="topicref" data-id="rtc_demo" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/rtc/rtc-demo.html" id="rtc_demo-d4445e3648-link">Demo</a></div></div></li></ul></li><li role="treeitem"><div data-tocid="rtc_common_issues-d4445e3662" class="topicref" data-id="rtc_common_issues" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/rtc/rtc-common-issues.html" id="rtc_common_issues-d4445e3662-link">常见问题</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="tsensor-d4445e3676" class="topicref" data-id="tsensor" data-state="not-ready"><span role="button" tabindex="0" 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class="wh-tooltip"><p class="shortdesc">GE、VE、Display、DVP、MPP、MPP 播放器等多媒体模块的介绍和使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_nww_hzh_pzb-d4445e5947" class="topicref" data-id="concept_nww_hzh_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_nww_hzh_pzb-d4445e5947-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-interface-sdk.html" id="concept_nww_hzh_pzb-d4445e5947-link">接口</a><div class="wh-tooltip"><p class="shortdesc">CAN、CIR、GPAI、GPIO、I2C、PSADC、PWM 等接口模块的介绍和使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-safety-d4445e7944" class="topicref" data-id="chapter-safety" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-safety-d4445e7944-link" class="wh-expand-btn"></span><div class="title"><a 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<span class="close-toc-icon-container">
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<span class="close-toc-icon"></span>
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</span>
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<button id="wh_close_topic_toc_button" class="close-toc-button d-none" aria-label="Toggle topic table of content" aria-controls="wh_topic_toc" aria-expanded="true">
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<span class="close-toc-icon-container">
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<span class="close-toc-icon"></span>
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|
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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" title="Edit this document" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/rtc/rtc-key-procedure.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">关键流程设计</h1>
|
||
|
||
<div class="date inPage">15 Jan 2024</div><div style="color: gray;">
|
||
Read time: 3 minute(s)
|
||
</div>
|
||
<div class="- topic/body concept/conbody body conbody">
|
||
<section class="- topic/section section" id="rtc_key_procedures__section_e1w_z5s_c1c" data-ofbid="rtc_key_procedures__section_e1w_z5s_c1c"><h2 class="- topic/title title sectiontitle">初始化流程</h2>
|
||
|
||
<p class="- topic/p p" data-ofbid="d106811e38__20250123155209">RTC 驱动的初始化过程见 aic_rtc_probe() 函数，除了普通 platform 设备的处理过程（申请 regs 资源、clk、reset）外，需要调用
|
||
RTC 子系统的接口 rtc_register_device() 来注册 RTC 设备。</p>
|
||
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="rtc_key_procedures__pre_f1w_z5s_c1c" data-ofbid="rtc_key_procedures__pre_f1w_z5s_c1c"><code>#<span class="hl-directive">define</span> rtc_register_device(device) __rtc_register_device(THIS_MODULE, device)</code></pre>
|
||
<div class="- topic/p p" data-ofbid="d106811e44__20250123155209">其中参数 device 中关键信息有：最大值、ops 等，aic_rtc_ops
|
||
定义如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="rtc_key_procedures__codeblock_h3r_kvs_c1c" data-ofbid="rtc_key_procedures__codeblock_h3r_kvs_c1c"><code><strong class="hl-keyword">static</strong> <strong class="hl-keyword">const</strong> <strong class="hl-keyword">struct</strong> rtc_class_ops aic_rtc_ops = {
|
||
.read_time = aic_rtc_read_time,
|
||
.set_time = aic_rtc_set_time,
|
||
.read_alarm = aic_rtc_read_alarm,
|
||
.set_alarm = aic_rtc_set_alarm,
|
||
.alarm_irq_enable = aic_rtc_alarm_irq_enable,
|
||
};</code></pre></div>
|
||
</section>
|
||
<section class="- topic/section section" id="rtc_key_procedures__section_h1w_z5s_c1c" data-ofbid="rtc_key_procedures__section_h1w_z5s_c1c"><h2 class="- topic/title title sectiontitle">校准算法设计</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d106811e55__20250123155209">校准的算法原理是，将输入的 32 KHz 晶振时钟校准到理想的 32
|
||
KHz，公式如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="rtc_key_procedures__codeblock_fbx_sdg_f1c" data-ofbid="rtc_key_procedures__codeblock_fbx_sdg_f1c"><code>(<span class="hl-number">100</span> * <span class="hl-number">1024</span> * <span class="hl-number">1024</span> + <span class="hl-number">100</span> * calibrate) / (clock-rate / <span class="hl-number">32</span>) = <span class="hl-number">1024</span>
|
||
=> calibrate = (clock-rate * <span class="hl-number">32</span> - <span class="hl-number">100</span> * <span class="hl-number">1024</span> * <span class="hl-number">1024</span>) / <span class="hl-number">100</span>;</code></pre></div>
|
||
<p class="- topic/p p" data-ofbid="d106811e60__20250123155209">其中：</p>
|
||
<ul class="- topic/ul ul" id="rtc_key_procedures__ul_j1w_z5s_c1c" data-ofbid="rtc_key_procedures__ul_j1w_z5s_c1c">
|
||
<li class="- topic/li li" data-ofbid="d106811e65__20250123155209">
|
||
<p class="- topic/p p" data-ofbid="d106811e67__20250123155209"><span class="+ topic/keyword pr-d/parmname keyword parmname">clock-rate</span>: 是用户实测 32K 晶振的频率值 * 100，需要配置在 DTS 中，详见 <a class="- topic/xref xref" href="rtc-config-guide.html#rtc_configuration__table_zjx_1ss_c1c">RTC 自定义参数</a></p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d106811e76__20250123155209">
|
||
<p class="- topic/p p" data-ofbid="d106811e78__20250123155209"><span class="+ topic/keyword pr-d/parmname keyword parmname">calibrate</span>: 最终要填入 RTC 控制器的校准值</p>
|
||
<div class="- topic/note note note note_note" id="rtc_key_procedures__note_wyf_fvs_c1c" data-ofbid="rtc_key_procedures__note_wyf_fvs_c1c"><span class="note__title">注：</span> <div class="note__body">
|
||
<p class="- topic/p p" data-ofbid="d106811e85__20250123155209">校准值 calibrate 分正负，正 - 表示 32K 晶振实际偏快了，负 - 表示 32K 晶振偏慢了。</p>
|
||
</div></div>
|
||
</li>
|
||
</ul>
|
||
</section>
|
||
<section class="- topic/section section" id="rtc_key_procedures__section_k1w_z5s_c1c" data-ofbid="rtc_key_procedures__section_k1w_z5s_c1c"><h2 class="- topic/title title sectiontitle">系统状态的备份功能</h2>
|
||
|
||
<p class="- topic/p p" data-ofbid="d106811e97__20250123155209">RTC 控制器提供了 128-bit 备份寄存器 SYS_BAK，用于掉电时一些重要状态或者参数的保存。RTC 驱动将这几个寄存器封装为对外接口（
|
||
<code class="+ topic/ph pr-d/codeph ph codeph">EXPORT_SYMBOL_GPL()</code> 的形式)，Linux 中其他驱动都可以调用。</p>
|
||
</section>
|
||
|
||
<section class="- topic/section section" id="rtc_key_procedures__section_l1w_z5s_c1c" data-ofbid="rtc_key_procedures__section_l1w_z5s_c1c"><h2 class="- topic/title title sectiontitle">Reboot Reason 的设计</h2>
|
||
|
||
<p class="- topic/p p" data-ofbid="d106811e111__20250123155209">将<a xml:lang="zh-CN" lang="zh-CN" class="- topic/xref xref" href="rtc-key-procedure.html#rtc_key_procedures__section_k1w_z5s_c1c">系统状态的备份功能</a> 中 <strong class="+ topic/ph hi-d/b ph b">系统备份寄存器</strong> 保存不同情况的
|
||
Reboot reason，可用于分析终端运行稳定性问题、进入快速启动模式等场景。</p>
|
||
<p class="- topic/p p" data-ofbid="d106811e121__20250123155209">SYS_BAK 寄存器需要和 WRI 模块一起配合来完成 reason 的处理：</p>
|
||
<ol class="- topic/ol ol" id="rtc_key_procedures__ol_m1w_z5s_c1c" data-ofbid="rtc_key_procedures__ol_m1w_z5s_c1c">
|
||
<li class="- topic/li li" data-ofbid="d106811e126__20250123155209">WRI<p class="- topic/p p" data-ofbid="d106811e128__20250123155209">负责记录 <strong class="+ topic/ph hi-d/b ph b">硬件可监测</strong> 到的 Reboot 原因，如过温保护、看门狗复位、外部输入复位等。</p></li>
|
||
<li class="- topic/li li" data-ofbid="d106811e134__20250123155209">SYS_BAK<p class="- topic/p p" data-ofbid="d106811e136__20250123155209">负责记录 <strong class="+ topic/ph hi-d/b ph b">软件可监测</strong> 到的 Reboot 原因，如 Suspend、Panic、进入烧写模式、正常重启等。</p></li>
|
||
</ol>
|
||
<p class="- topic/p p" data-ofbid="d106811e143__20250123155209">关于 Reboot 原因，梳理分类如下：</p>
|
||
<figure class="- topic/fig fig fignone" id="rtc_key_procedures__fig_wdz_bvs_c1c" data-ofbid="rtc_key_procedures__fig_wdz_bvs_c1c">
|
||
|
||
<br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="rtc_key_procedures__image_p1w_z5s_c1c" src="../../../images/boot/reboot_reason.png" width="576" alt="reboot_reason"/></div><br/>
|
||
<figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 1</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">各种情况的 reason 梳理</span></figcaption></figure>
|
||
<div class="- topic/note note tip note_tip" id="rtc_key_procedures__note_ntl_bvs_c1c" data-ofbid="rtc_key_procedures__note_ntl_bvs_c1c"><span class="note__title">提示：</span> <div class="note__body">
|
||
<p class="- topic/p p" data-ofbid="d106811e161__20250123155209">其中“外部 IO 复位”指常用的 Reset 按键。</p>
|
||
</div></div>
|
||
<div class="- topic/p p" data-ofbid="d106811e165__20250123155209">定义 <strong class="+ topic/ph hi-d/b ph b">SYS_BAK0 寄存器（4~7bit）</strong> 的值如下：（详见
|
||
include/linux/reboot-reason.h）<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="rtc_key_procedures__codeblock_zdl_53t_c1c" data-ofbid="rtc_key_procedures__codeblock_zdl_53t_c1c"><code><strong class="hl-keyword">enum</strong> aic_reboot_reason {
|
||
REBOOT_REASON_COLD = <span class="hl-number">0</span>,
|
||
REBOOT_REASON_CMD_REBOOT = <span class="hl-number">1</span>,
|
||
REBOOT_REASON_CMD_SHUTDOWN = <span class="hl-number">2</span>,
|
||
REBOOT_REASON_SUSPEND = <span class="hl-number">3</span>,
|
||
REBOOT_REASON_UPGRADE = <span class="hl-number">4</span>,
|
||
REBOOT_REASON_FASTBOOT = <span class="hl-number">5</span>,
|
||
|
||
<em class="hl-comment">/* Some software exception reason */</em>
|
||
REBOOT_REASON_SW_LOCKUP = <span class="hl-number">8</span>,
|
||
REBOOT_REASON_HW_LOCKUP = <span class="hl-number">9</span>,
|
||
REBOOT_REASON_PANIC = <span class="hl-number">10</span>,
|
||
REBOOT_REASON_RAMDUMP = <span class="hl-number">11</span>,
|
||
|
||
<em class="hl-comment">/* Some hardware exception reason */</em>
|
||
REBOOT_REASON_RTC = <span class="hl-number">17</span>,
|
||
REBOOT_REASON_EXTEND = <span class="hl-number">18</span>,
|
||
REBOOT_REASON_DM = <span class="hl-number">19</span>,
|
||
REBOOT_REASON_OTP = <span class="hl-number">20</span>,
|
||
REBOOT_REASON_UNDER_VOL = <span class="hl-number">21</span>,
|
||
};</code></pre></div>
|
||
<p class="- topic/p p" data-ofbid="d106811e173__20250123155209">针对不同场景，SYS_BAK0 寄存器中的 reason 和 WRI 中的 FLAG 值对应如下：</p>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="rtc_key_procedures__table_r1w_z5s_c1c" data-ofbid="rtc_key_procedures__table_r1w_z5s_c1c" data-cols="4"><caption></caption><colgroup><col style="width:20.40816326530612%"/><col style="width:36.93877551020408%"/><col style="width:22.244897959183675%"/><col style="width:20.40816326530612%"/></colgroup><thead class="- topic/thead thead">
|
||
<tr class="- topic/row">
|
||
<th class="- topic/entry entry colsep-1 rowsep-1" id="rtc_key_procedures__table_r1w_z5s_c1c__entry__1">场景</th>
|
||
<th class="- topic/entry entry colsep-1 rowsep-1" id="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">触发行为</th>
|
||
<th class="- topic/entry entry colsep-1 rowsep-1" id="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">WRI 状态</th>
|
||
<th class="- topic/entry entry colsep-0 rowsep-1" id="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">SYS_BAK 状态值</th>
|
||
</tr>
|
||
</thead><tbody class="- topic/tbody tbody">
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__1" rowspan="3">
|
||
<p class="- topic/p p" data-ofbid="d106811e213__20250123155209">正常重启</p>
|
||
</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">按 Reset 按键</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">EXT_RST</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">COLD</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">shell 中执行 reboot 命令</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">WDOG_RST</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">CMD_REBOOT</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">shell 执行 aicupg 命令进入烧写</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">WDOG_RST</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">UPGRADE</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__1" rowspan="3">
|
||
<p class="- topic/p p" data-ofbid="d106811e255__20250123155209">正常关机</p>
|
||
</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">长按 PowerOn 按键</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">SYS_POR</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">COLD</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">shell 中执行 poweroff 命令</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">SYS_POR</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">CMD_SHUTDOWN</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">进入深度休眠状态</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">SYS_POR</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">SUSPEND</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__1" rowspan="8">
|
||
<p class="- topic/p p" data-ofbid="d106811e298__20250123155209">异常重启</p>
|
||
</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">过温保护</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">OTP</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">COLD</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">通过 Jtag 执行 reset 命令</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">DM_RST</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">COLD</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">RTC 模块断电</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">RTC_POR</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">COLD</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">内核中发生 SW Lock</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">WDOG_RST</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">SW_LOCKUP</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">内核中发生 HW Lock</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">WDOG_RST</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">HW_LOCKUP</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">内核中发生 Panic</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">WDOG_RST</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">PANIC</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">内核中触发进入 Ramdump</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">WDOG_RST</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">RAMDUMP</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__2">电源电压不稳定</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__3">CMP_RST</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-0" headers="rtc_key_procedures__table_r1w_z5s_c1c__entry__4">COLD</td>
|
||
</tr>
|
||
</tbody></table></div>
|
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<div class="- topic/note note note note_note" id="rtc_key_procedures__note_drb_1vs_c1c" data-ofbid="rtc_key_procedures__note_drb_1vs_c1c"><span class="note__title">注：</span> <div class="note__body">
|
||
<p class="- topic/p p" data-ofbid="d106811e402__20250123155209">其中<span class="+ topic/ph ui-d/uicontrol ph uicontrol">按 Reset 按键</span>的情况，因为软件来不及设置 BAK，所以是初始值 0 （COLD）。</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="#rtc_key_procedures__section_e1w_z5s_c1c" data-tocid="rtc_key_procedures__section_e1w_z5s_c1c">初始化流程</a></div></li><li class="section-item"><div class="section-title"><a href="#rtc_key_procedures__section_h1w_z5s_c1c" data-tocid="rtc_key_procedures__section_h1w_z5s_c1c">校准算法设计</a></div></li><li class="section-item"><div class="section-title"><a href="#rtc_key_procedures__section_k1w_z5s_c1c" data-tocid="rtc_key_procedures__section_k1w_z5s_c1c">系统状态的备份功能</a></div></li><li class="section-item"><div class="section-title"><a href="#rtc_key_procedures__section_l1w_z5s_c1c" data-tocid="rtc_key_procedures__section_l1w_z5s_c1c">Reboot Reason 的设计</a></div></li></ul></div>
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