mirror of
https://gitee.com/Vancouver2017/luban-lite-t3e-pro.git
synced 2025-12-14 18:38:55 +00:00
219 lines
35 KiB
HTML
219 lines
35 KiB
HTML
<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-cn" lang="zh-cn" data-whc_version="26.0">
|
||
<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="看门狗 (Watchdog, WDT) 定时器可以监控系统的健康状态，并在系统无法正常使用时，强制复位系统。看门狗内部有一个递减计数器，在系统正常运行期间，通过重置计数可以保证看门狗模块不触发复位。 表 1 . 术语定义 术语 定义 注释说明 WDT Watchdog，下文简称 wdt 看门狗 clr_thd Clear threshold 清看门狗的计数时，当前计数必须要满足此门限 ..."/><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.relation" content="../../../topics/chapter-title/chapter-system.html"/><meta name="DC.relation" content="../../../topics/sdk/tsensor/tsensor-faq_2.html"/><meta name="DC.relation" content="../../../topics/sdk/watchdog/watchdog-config-lite.html"/><meta name="DC.relation" content="../../../topics/sdk/watchdog/watchdog-config-lite.html"/><meta name="DC.relation" content="../../../topics/sdk/watchdog/watchdog-debug-lite.html"/><meta name="DC.relation" content="../../../topics/sdk/watchdog/watchdog-test-guide-lite.html"/><meta name="DC.relation" content="../../../topics/sdk/watchdog/watchdog-design-lite.html"/><meta name="DC.contributor" content="yan.wang"/><meta name="DC.contributor" content="yan.wang"/><meta name="DC.date.modified" content="2024-01-15"/><meta name="DC.format" content="HTML5"/><meta name="DC.identifier" content="watchdog"/><meta name="DC.language" content="zh-CN"/><title>Watchdog 使用指南</title><!-- Build number 2023110923. --><meta name="wh-path2root" content="../../../"/><meta name="wh-toc-id" content="watchdog-d5856e3249"/><meta name="wh-source-relpath" content="topics/sdk/watchdog/watchdog-user-guide.dita"/><meta name="wh-out-relpath" content="topics/sdk/watchdog/watchdog-user-guide_2.html"/>
|
||
|
||
<link rel="stylesheet" type="text/css" href="../../../webhelp/app/commons.css?buildId=2023110923"/>
|
||
<link rel="stylesheet" type="text/css" href="../../../webhelp/app/topic.css?buildId=2023110923"/>
|
||
|
||
<script src="../../../webhelp/app/options/properties.js?buildId=20250121171154"></script>
|
||
<script src="../../../webhelp/app/localization/strings.js?buildId=2023110923"></script>
|
||
<script src="../../../webhelp/app/search/index/keywords.js?buildId=20250121171154"></script>
|
||
<script defer="defer" src="../../../webhelp/app/commons.js?buildId=2023110923"></script>
|
||
<script defer="defer" src="../../../webhelp/app/topic.js?buildId=2023110923"></script>
|
||
<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>
|
||
|
||
<body id="watchdog" class="wh_topic_page frmBody">
|
||
<a href="#wh_topic_body" class="sr-only sr-only-focusable">
|
||
跳转到主要内容
|
||
</a>
|
||
|
||
|
||
|
||
|
||
<header class="navbar navbar-default wh_header">
|
||
<div class="container-fluid">
|
||
<div class="wh_header_flex_container navbar-nav navbar-expand-md navbar-dark">
|
||
<div class="wh_logo_and_publication_title_container">
|
||
<div class="wh_logo_and_publication_title">
|
||
|
||
<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>
|
||
<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>
|
||
|
||
</div>
|
||
|
||
|
||
</div>
|
||
|
||
<div class="wh_top_menu_and_indexterms_link collapse navbar-collapse" id="wh_top_menu_and_indexterms_link">
|
||
|
||
|
||
|
||
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</header>
|
||
|
||
|
||
|
||
|
||
<div class=" wh_search_input navbar-form wh_topic_page_search search " role="form">
|
||
|
||
|
||
|
||
<form id="searchForm" method="get" role="search" action="../../../search.html"><div><input type="search" placeholder="搜索 " class="wh_search_textfield" id="textToSearch" name="searchQuery" aria-label="搜索查询" required="required"/><button type="submit" class="wh_search_button" aria-label="搜索"><span class="search_input_text">搜索</span></button></div></form>
|
||
|
||
|
||
|
||
</div>
|
||
|
||
<div class="container-fluid" id="wh_topic_container">
|
||
<div class="row">
|
||
|
||
<nav class="wh_tools d-print-none navbar-expand-md" aria-label="Tools">
|
||
|
||
<div data-tooltip-position="bottom" class=" wh_breadcrumb "><ol class="d-print-none"><li><span class="home"><a href="../../../index.html"><span>主页</span></a></span></li><li><div class="topicref" data-id="id"><div class="title"><a href="../../../topics/sdk/chapter-advanced-app.html">高级应用</a><div class="wh-tooltip"><p class="shortdesc">系统、存储、多媒体、接口、安全等模块的详细配置和设计说明。</p></div></div></div></li><li><div class="topicref" data-id="chapter-system"><div class="title"><a href="../../../topics/chapter-title/chapter-system.html">系统</a><div class="wh-tooltip"><p class="shortdesc"></p></div></div></div></li><li class="active"><div class="topicref" data-id="watchdog"><div class="title"><a href="../../../topics/sdk/watchdog/watchdog-user-guide_2.html">Watchdog 使用指南</a></div></div></li></ol></div>
|
||
|
||
|
||
|
||
<div class="wh_right_tools">
|
||
<button class="wh_hide_highlight" aria-label="切换搜索突出显示" title="切换搜索突出显示"></button>
|
||
<button class="webhelp_expand_collapse_sections" data-next-state="collapsed" aria-label="折叠截面" title="折叠截面"></button>
|
||
<div class=" wh_navigation_links "><span id="topic_navigation_links" class="navheader">
|
||
|
||
<span class="navprev"><a class="- topic/link link" href="../../../topics/sdk/tsensor/tsensor-faq_2.html" title="常见问题" aria-label="上一主题: 常见问题" rel="prev"></a></span>
|
||
<span class="navnext"><a class="- topic/link link" href="../../../topics/sdk/watchdog/watchdog-config-lite.html" title="Watchdog 配置" aria-label="下一主题: Watchdog 配置" rel="next"></a></span> </span></div>
|
||
|
||
|
||
|
||
<div class=" wh_print_link print d-none d-md-inline-block "><button onClick="window.print()" title="打印此页" aria-label="打印此页"></button></div>
|
||
|
||
<button type="button" id="wh_toc_button" class="custom-toggler navbar-toggler collapsed wh_toggle_button navbar-light" aria-expanded="false" aria-label="Toggle publishing table of content" aria-controls="wh_publication_toc">
|
||
<span class="navbar-toggler-icon"></span>
|
||
</button>
|
||
</div>
|
||
|
||
</nav>
|
||
</div>
|
||
|
||
|
||
|
||
|
||
<div class="wh_content_area">
|
||
<div class="row">
|
||
|
||
<nav id="wh_publication_toc" class="col-lg-3 col-md-3 col-sm-12 d-md-block d-none d-print-none" aria-label="Table of Contents Container">
|
||
<div id="wh_publication_toc_content">
|
||
|
||
<div class=" wh_publication_toc " data-tooltip-position="right"><span class="expand-button-action-labels"><span id="button-expand-action" role="button" aria-label="Expand"></span><span id="button-collapse-action" role="button" aria-label="Collapse"></span><span id="button-pending-action" role="button" aria-label="Pending"></span></span><ul role="tree" aria-label="Table of Contents"><li role="treeitem"><div data-tocid="revinfo_linux-d5856e989" class="topicref" data-id="revinfo_linux" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/revinfo/revinfo_rtos.html" id="revinfo_linux-d5856e989-link">修订记录</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e1003" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e1003-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/env/sdk-compile.html" id="id-d5856e1003-link">SDK 编译</a><div class="wh-tooltip"><p class="shortdesc">介绍不同编译环境下 SDK 的详细编译流程。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e1152" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e1152-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/advanced/sdk-usage.html" id="id-d5856e1152-link">使用指南</a><div class="wh-tooltip"><p class="shortdesc">系统镜像、编译选项、开发板、应用等相关的详细使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_rcx_czh_pzb-d5856e1416" class="topicref" data-id="concept_rcx_czh_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_rcx_czh_pzb-d5856e1416-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/chapter-app.html" id="concept_rcx_czh_pzb-d5856e1416-link">应用场景</a><div class="wh-tooltip"><p class="shortdesc">描述了 SDK 在不同应用场景中的配置和使用，包括系统更新、OTA、安全方案等。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e2119" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e2119-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/peripheral/peripheral-intro.html" id="id-d5856e2119-link">外设移植</a><div class="wh-tooltip"><p class="shortdesc"><span class="ph">CTP、U 盘、SD 卡、有线和无线网络</span>等外设的介绍和使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e2244" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e2244-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/chapter-bringup.html" id="id-d5856e2244-link">BringUp</a><div class="wh-tooltip"><p class="shortdesc">在硬件上电后快速初始化系统，为操作系统的启动准备好必要的硬件环境。</p></div></div></div></li><li role="treeitem" aria-expanded="true"><div data-tocid="id-d5856e2345" class="topicref" data-id="id" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action id-d5856e2345-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/chapter-advanced-app.html" id="id-d5856e2345-link">高级应用</a><div class="wh-tooltip"><p class="shortdesc">系统、存储、多媒体、接口、安全等模块的详细配置和设计说明。</p></div></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem" aria-expanded="false"><div data-tocid="_0-d5856e2360" class="topicref" data-id="_0" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action _0-d5856e2360-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/boot/lite_boot_direct.html" id="_0-d5856e2360-link">启动引导</a><div class="wh-tooltip"><p class="shortdesc">启动引导程序 Bootloader 可以实现加载启动应用程序、 烧录和升级功能。</p></div></div></div></li><li role="treeitem" aria-expanded="true"><div data-tocid="chapter-system-d5856e2435" class="topicref" data-id="chapter-system" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action chapter-system-d5856e2435-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-system.html" id="chapter-system-d5856e2435-link">系统</a><div class="wh-tooltip"><p class="shortdesc"></p></div></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-memory-d5856e2449" class="topicref" data-id="chapter-memory" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-memory-d5856e2449-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/mem/memory-user-guide.html" id="chapter-memory-d5856e2449-link">Memory 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="system_interrupt_user_guide-d5856e2565" class="topicref" data-id="system_interrupt_user_guide" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action system_interrupt_user_guide-d5856e2565-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/interrupt/interrupt-user-guide.html" id="system_interrupt_user_guide-d5856e2565-link">Interrupt 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="cmu-d5856e2601" class="topicref" data-id="cmu" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action cmu-d5856e2601-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/cmu/cmu-introduction_2.html" id="cmu-d5856e2601-link">CMU 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_or5_kn3_pzb-d5856e2697" class="topicref" data-id="concept_or5_kn3_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_or5_kn3_pzb-d5856e2697-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/dma/dma-user-guide_2.html" id="concept_or5_kn3_pzb-d5856e2697-link">DMA 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e2805" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e2805-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/hrtimer/hrtimer-user-guide.html" id="id-d5856e2805-link">HRTimer 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e2877" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e2877-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/mtop/mtop_user_guide.html" id="id-d5856e2877-link">MTOP 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_n2p_sn3_pzb-d5856e2937" class="topicref" data-id="concept_n2p_sn3_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_n2p_sn3_pzb-d5856e2937-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/rtc/rtc-user-guide_2.html" id="concept_n2p_sn3_pzb-d5856e2937-link">RTC 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e3057" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e3057-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/pm/pm_introduction.html" id="id-d5856e3057-link">Power Management 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="tsensor-d5856e3129" class="topicref" data-id="tsensor" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action tsensor-d5856e3129-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/tsensor/tsensor-user-guide_2.html" id="tsensor-d5856e3129-link">TSensor 使用指南</a></div></div></li><li role="treeitem" aria-expanded="true" class="active"><div data-tocid="watchdog-d5856e3249" class="topicref" data-id="watchdog" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action watchdog-d5856e3249-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/watchdog/watchdog-user-guide_2.html" id="watchdog-d5856e3249-link">Watchdog 使用指南</a></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem"><div data-tocid="id-d5856e3261" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/watchdog/watchdog-config-lite.html" id="id-d5856e3261-link">Watchdog 配置</a></div></div></li><li role="treeitem"><div data-tocid="id-d5856e3273" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/watchdog/watchdog-debug-lite.html" id="id-d5856e3273-link">调试指南</a></div></div></li><li role="treeitem"><div data-tocid="id-d5856e3285" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/watchdog/watchdog-test-guide-lite.html" id="id-d5856e3285-link">测试指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e3297" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e3297-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/watchdog/watchdog-design-lite.html" id="id-d5856e3297-link">设计说明</a></div></div></li></ul></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-memory-d5856e3357" class="topicref" data-id="chapter-memory" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-memory-d5856e3357-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-memory-sdk.html" id="chapter-memory-d5856e3357-link">存储</a><div class="wh-tooltip"><p class="shortdesc">SDMC、SPI NAND、SPI NOR<span class="ph"> 以及文件系统</span> 等存储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_mcc_32s_nbc-d5856e3639" class="topicref" data-id="concept_mcc_32s_nbc" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_mcc_32s_nbc-d5856e3639-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-multi-media-sdk.html" id="concept_mcc_32s_nbc-d5856e3639-link">多媒体</a><div 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-d5856e4868" 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-d5856e4868-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-interface-sdk.html" id="concept_nww_hzh_pzb-d5856e4868-link">接口</a><div class="wh-tooltip"><p class="shortdesc">CAN<span class="ph">、CAP</span>、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-d5856e6083" class="topicref" data-id="chapter-safety" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-safety-d5856e6083-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-safety-sdk.html" id="chapter-safety-d5856e6083-link">安全</a><div class="wh-tooltip"><p class="shortdesc">SPI ENC、CE、eFuse 等安全模块的介绍和使用说明。</p></div></div></div></li></ul></li></ul></div>
|
||
|
||
</div>
|
||
</nav>
|
||
|
||
|
||
<div class="col-lg-9 col-md-9 col-sm-12" id="wh_topic_body">
|
||
<button id="wh_close_publication_toc_button" class="close-toc-button d-none" aria-label="Toggle publishing table of content" aria-controls="wh_publication_toc" aria-expanded="true">
|
||
<span class="close-toc-icon-container">
|
||
<span class="close-toc-icon"></span>
|
||
</span>
|
||
</button>
|
||
|
||
|
||
<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/watchdog/watchdog-user-guide.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">Watchdog 使用指南</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
|
||
Read time: 1 minute(s)
|
||
</div><div class="- topic/body concept/conbody body conbody"><p class="- topic/p p" data-ofbid="d335568e24__20250121171844">看门狗 (Watchdog, WDT)
|
||
定时器可以监控系统的健康状态，并在系统无法正常使用时，强制复位系统。看门狗内部有一个递减计数器，在系统正常运行期间，通过重置计数可以保证看门狗模块不触发复位。</p><div class="table-container"><table class="- topic/table table frame-all" id="watchdog__table_pkr_nct_c1c" data-ofbid="watchdog__table_pkr_nct_c1c" data-cols="3"><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">术语定义</span></caption><colgroup><col style="width:14.306151645207438%"/><col style="width:28.898426323319025%"/><col style="width:56.79542203147353%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="watchdog__table_pkr_nct_c1c__entry__1">术语</th><th class="- topic/entry entry colsep-1 rowsep-1" id="watchdog__table_pkr_nct_c1c__entry__2">定义</th><th class="- topic/entry entry colsep-0 rowsep-1" id="watchdog__table_pkr_nct_c1c__entry__3">注释说明</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="watchdog__table_pkr_nct_c1c__entry__1">WDT</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="watchdog__table_pkr_nct_c1c__entry__2">Watchdog，下文简称 wdt</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="watchdog__table_pkr_nct_c1c__entry__3">看门狗</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="watchdog__table_pkr_nct_c1c__entry__1">clr_thd</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="watchdog__table_pkr_nct_c1c__entry__2">Clear threshold</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="watchdog__table_pkr_nct_c1c__entry__3">清看门狗的计数时，当前计数必须要满足此门限</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="watchdog__table_pkr_nct_c1c__entry__1">irq_thd</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="watchdog__table_pkr_nct_c1c__entry__2">IRQ threshold</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="watchdog__table_pkr_nct_c1c__entry__3">看门狗产生中断的计数值</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="watchdog__table_pkr_nct_c1c__entry__1">rst_thd</td><td class="- topic/entry entry colsep-1 rowsep-1" headers="watchdog__table_pkr_nct_c1c__entry__2">Reset threshold</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="watchdog__table_pkr_nct_c1c__entry__3">看门狗触发系统重启的门限值</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="watchdog__table_pkr_nct_c1c__entry__1">ping</td><td class="- topic/entry entry colsep-1 rowsep-0" headers="watchdog__table_pkr_nct_c1c__entry__2">-</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="watchdog__table_pkr_nct_c1c__entry__3">指将看门狗的计时器清零，使其重新计数，俗称“喂狗”</td></tr></tbody></table></div><section class="- topic/section section" id="watchdog__id3" data-ofbid="watchdog__id3"><h2 class="- topic/title title sectiontitle">Watchdog 功能说明</h2>
|
||
|
||
<p class="- topic/p p" data-ofbid="d335568e82__20250121171844">Watchdog
|
||
V1.0
|
||
提供了下列系统监控和保护功能：</p>
|
||
<ol class="- topic/ol ol arabic simple" id="watchdog__ol_rmx_cxh_bdc" data-ofbid="watchdog__ol_rmx_cxh_bdc"><li class="- topic/li li" data-ofbid="d335568e90__20250121171844">
|
||
<p class="- topic/p p" data-ofbid="d335568e92__20250121171844"><strong class="+ topic/ph hi-d/b ph b">中断信号通知</strong>：在复位系统前先（时刻可配置），Watchdog 能够发出一个中断信号，通知系统做复位前的准备工作。</p>
|
||
<p class="- topic/p p" data-ofbid="d335568e97__20250121171844">中断信号通知可允许系统在被强制复位之前执行一些关键操作，例如保存当前状态或清理资源。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d335568e100__20250121171844">
|
||
<p class="- topic/p p" data-ofbid="d335568e102__20250121171844"><strong class="+ topic/ph hi-d/b ph b">计数器清零限制</strong>：仅在当前计数值满足某个门限（可配置）值时才能执行清零操作。</p>
|
||
<p class="- topic/p p" data-ofbid="d335568e107__20250121171844">计数器清零限制有助于防止误操作导致的不必要复位，提高系统的可靠性。</p>
|
||
<figure class="- topic/fig fig fignone" id="watchdog__fig_xwq_qct_c1c" data-ofbid="watchdog__fig_xwq_qct_c1c"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="watchdog__image_smx_cxh_bdc" src="../../../images/watchdog/wdt_clr_window.png" alt="wdt_clr_window"/></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">Watchdog 清零的窗口示意</span></figcaption></figure>
|
||
</li><li class="- topic/li li" data-ofbid="d335568e117__20250121171844">
|
||
<p class="- topic/p p" data-ofbid="d335568e119__20250121171844"><strong class="+ topic/ph hi-d/b ph b">多通道配置</strong>：支持预先加载四个 Watchdog 的配置，运行时可一键切换。软件可以理解为多通道，目前只开放一个通道，即通道 0。</p>
|
||
<p class="- topic/p p" data-ofbid="d335568e124__20250121171844">多通道配置适用于需要在不同工作模式间灵活切换的系统，增强了系统的适应性和灵活性。</p>
|
||
</li><li class="- topic/li li" data-ofbid="d335568e127__20250121171844">
|
||
<p class="- topic/p p" data-ofbid="d335568e129__20250121171844"><strong class="+ topic/ph hi-d/b ph b">写失效保护机制</strong>：当配置了写失效，除了 OP 和 IRQ_STA 寄存器可读以外，其他寄存器均不可读。</p>
|
||
<p class="- topic/p p" data-ofbid="d335568e134__20250121171844">写失效保护适用于上述所有功能操作，可防止意外或恶意的软件修改 Watchdog 配置，保证系统的安全稳定运行。</p>
|
||
<figure class="- topic/fig fig fignone" id="watchdog__id5" data-ofbid="watchdog__id5"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="watchdog__image_umx_cxh_bdc" src="../../../images/watchdog/wdt_wr_protect.png" width="384" alt="wdt_wr_protect"/></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"> 2</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">Watchdog 写保护的状态迁移</span></figcaption></figure>
|
||
<p class="- topic/p p" data-ofbid="d335568e144__20250121171844">展示了不同状态下可进行的操作，以及如何进入和退出状态：</p>
|
||
<ul class="- topic/ul ul simple" id="watchdog__ul_vmx_cxh_bdc" data-ofbid="watchdog__ul_vmx_cxh_bdc"><li class="- topic/li li" data-ofbid="d335568e148__20250121171844">
|
||
<dl class="- topic/dl dl simple" id="watchdog__dl_wmx_cxh_bdc" data-ofbid="watchdog__dl_wmx_cxh_bdc"><dt class="- topic/dt dt dlterm" data-ofbid="d335568e152__20250121171844">写允许</dt><dd class="- topic/dd dd">
|
||
<p class="- topic/p p" data-ofbid="d335568e156__20250121171844">普通状态，无任何权限限制，随时可重新配置计数器。</p>
|
||
</dd></dl>
|
||
</li><li class="- topic/li li" data-ofbid="d335568e160__20250121171844">
|
||
<dl class="- topic/dl dl simple" id="watchdog__dl_xmx_cxh_bdc" data-ofbid="watchdog__dl_xmx_cxh_bdc"><dt class="- topic/dt dt dlterm" data-ofbid="d335568e164__20250121171844">写保护</dt><dd class="- topic/dd dd">
|
||
<p class="- topic/p p" data-ofbid="d335568e168__20250121171844"> 如果要重新配置 Watchdog 计时器，需先写入操作码 OP_WR_EN 解锁（进入“写允许”状态）。</p>
|
||
</dd></dl>
|
||
</li><li class="- topic/li li" data-ofbid="d335568e172__20250121171844">
|
||
<dl class="- topic/dl dl simple" id="watchdog__dl_ymx_cxh_bdc" data-ofbid="watchdog__dl_ymx_cxh_bdc"><dt class="- topic/dt dt dlterm" data-ofbid="d335568e176__20250121171844">写失效</dt><dd class="- topic/dd dd">
|
||
<p class="- topic/p p" data-ofbid="d335568e180__20250121171844"> 此时 Watchdog 进入只读状态，只有 OP
|
||
寄存器可写（用于喂狗、切换通道）。从图中可以看到此状态不可逆，如果要修改 Watchdog 配置，必须要
|
||
reset 系统才可以。</p>
|
||
</dd></dl>
|
||
</li></ul>
|
||
</li><li class="- topic/li li" data-ofbid="d335568e185__20250121171844">
|
||
<p class="- topic/p p" data-ofbid="d335568e187__20250121171844"><strong class="+ topic/ph hi-d/b ph b">支持操作码 (Operate Code)</strong>：支持多种操作码，如计时器清零、通道切换、写使能等，以实现更精细的控制。</p>
|
||
</li></ol>
|
||
</section></div></article></main></div>
|
||
|
||
<div class=" wh_child_links d-print-none "><nav aria-label="Child Links" role="navigation" class="- topic/related-links related-links"><ul class="ullinks"><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/watchdog/watchdog-config-lite.html">Watchdog 配置</a></strong></li><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/watchdog/watchdog-debug-lite.html">调试指南</a></strong></li><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/watchdog/watchdog-test-guide-lite.html">测试指南</a></strong></li><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/watchdog/watchdog-design-lite.html">设计说明</a></strong></li></ul></nav></div>
|
||
|
||
|
||
|
||
|
||
</div>
|
||
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
</div>
|
||
<footer class="navbar navbar-default wh_footer">
|
||
<div class=" footer-container mx-auto ">
|
||
<title>footer def</title>
|
||
<style><!--
|
||
|
||
.p1 {
|
||
font-family: FangZhengShuSong, Times, serif;
|
||
}
|
||
.p2 {
|
||
font-family: Arial, Helvetica, sans-serif;
|
||
}
|
||
.p3 {
|
||
font-family: "Lucida Console", "Courier New", monospace;
|
||
}
|
||
|
||
--></style>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<div class="webhelp.fragment.footer">
|
||
<p class="p1">Copyright © 2019-2024 广东匠芯创科技有限公司. All rights reserved.</p>
|
||
</div><div>
|
||
<div class="generation_time">
|
||
Update Time: 2025-01-21
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</footer>
|
||
|
||
<div id="go2top" class="d-print-none">
|
||
<span class="oxy-icon oxy-icon-up"></span>
|
||
</div>
|
||
|
||
<div id="modal_img_large" class="modal">
|
||
<span class="close oxy-icon oxy-icon-remove"></span>
|
||
<div id="modal_img_container"></div>
|
||
<div id="caption"></div>
|
||
</div>
|
||
|
||
|
||
<script src="${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer="defer"></script>
|
||
|
||
|
||
</body>
|
||
</html> |