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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/watchdog/watchdog-test-guide-lite.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">测试指南</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
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Read time: 2 minute(s)
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</div><div class="- topic/body body"><section class="- topic/section section" id="id__id2" data-ofbid="id__id2"><h2 class="- topic/title title sectiontitle">准备测试环境</h2>
|
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<div class="- topic/p p" data-ofbid="d268464e24__20250121171736">
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<ul class="- topic/ul ul" id="id__ul_wcs_wzg_ddc" data-ofbid="id__ul_wcs_wzg_ddc"><li class="- topic/li li" data-ofbid="d268464e27__20250121171736"><strong class="+ topic/ph hi-d/b ph b">硬件</strong><ul class="- topic/ul ul simple" id="id__ul_qwy_hxh_bdc" data-ofbid="id__ul_qwy_hxh_bdc"><li class="- topic/li li" data-ofbid="d268464e31__20250121171736">
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<p class="- topic/p p" data-ofbid="d268464e33__20250121171736">开发板</p>
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</li></ul></li><li class="- topic/li li" data-ofbid="d268464e36__20250121171736"><strong class="+ topic/ph hi-d/b ph b">软件</strong><ul class="- topic/ul ul simple" id="id__ul_rwy_hxh_bdc" data-ofbid="id__ul_rwy_hxh_bdc"><li class="- topic/li li" data-ofbid="d268464e40__20250121171736">
|
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<p class="- topic/p p" data-ofbid="d268464e42__20250121171736">PC 端的串口终端软件，用于 PC 和开发板进行串口通信</p>
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</li><li class="- topic/li li" data-ofbid="d268464e45__20250121171736">
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<p class="- topic/p p" data-ofbid="d268464e47__20250121171736"><span class="- topic/ph ph">Luban-Lite</span> 中打开 Watchdog 模块和
|
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<code class="+ topic/ph pr-d/codeph ph codeph">test_wdt</code> 功能</p>
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</li></ul></li></ul>
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</div></section><section class="- topic/section section" id="id__id5" data-ofbid="id__id5"><h2 class="- topic/title title sectiontitle">打开 <code class="+ topic/ph pr-d/codeph ph codeph">test-wdt</code></h2>
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<p class="- topic/p p" data-ofbid="d268464e63__20250121171736">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，按如下配置，打开 WDT 的综合功能测试 (<code class="+ topic/ph pr-d/codeph ph codeph">test_wdt</code>)：</p>
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<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_swy_hxh_bdc" data-ofbid="id__codeblock_swy_hxh_bdc">Drivers options --->
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Drivers examples --->
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||
[*] Enable WDT driver test command</pre>
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</section><section class="- topic/section section" id="id__id6" data-ofbid="id__id6"><h2 class="- topic/title title sectiontitle">测试
|
||
Watchdog
|
||
复位功能</h2>
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||
|
||
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||
<div class="- topic/p p" data-ofbid="d268464e83__20250121171736">
|
||
<ol class="- topic/ol ol" id="id__ol_xcn_p1h_ddc" data-ofbid="id__ol_xcn_p1h_ddc"><li class="- topic/li li" data-ofbid="d268464e86__20250121171736">连接开发板和 PC。</li><li class="- topic/li li" data-ofbid="d268464e88__20250121171736">按下开发板上的复位按钮或断开电源再重新上电来重启开发板。</li><li class="- topic/li li" data-ofbid="d268464e90__20250121171736">使用 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">reboot</span> 命令验证 Watchdog 的复位功能。<div class="- topic/p p" data-ofbid="d268464e95__20250121171736">WDT 驱动注册了一个
|
||
<span class="+ topic/keyword sw-d/cmdname keyword cmdname">reboot</span> 命令，可实现系统的复位，此命令可用来验证 WDT 的复位功能。
|
||
在串口终端中输入以下命令：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_dbb_s1h_ddc" data-ofbid="id__codeblock_dbb_s1h_ddc">reboot
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</pre></div><div class="- topic/p p" data-ofbid="d268464e102__20250121171736">系统输出示例如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_lnh_xv3_5dc" data-ofbid="id__codeblock_lnh_xv3_5dc"><span class="hl-number">01</span>-<span class="hl-number">01</span> <span class="hl-number">08</span>:<span class="hl-number">05</span>:<span class="hl-number">22</span> I/WDT: Restarting system ...
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Pre-Boot Program ... (<span class="hl-number">2023</span>-<span class="hl-number">03</span>-<span class="hl-number">02</span> <span class="hl-number">14</span>:<span class="hl-number">20</span>:<span class="hl-number">30</span>)
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Going to init DDR2. freq: <span class="hl-number">504</span>MHz, size: <span class="hl-number">64</span>MB.
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DDR2 initialized
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PBP done
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U-Boot SPL <span class="hl-number">2021.10</span>-<span class="hl-number">00008</span>-g13511a4f-dirty (Apr <span class="hl-number">172023</span> - <span class="hl-number">13</span>:<span class="hl-number">25</span>:<span class="hl-number">13</span> +<span class="hl-number">0800</span>)</pre></div></li></ol>
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</div>
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</section><section class="- topic/section section" id="id__id7" data-ofbid="id__id7"><h2 class="- topic/title title sectiontitle">测试
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Watchdog
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的综合功能</h2>
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||
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<div class="- topic/p p" data-ofbid="d268464e113__20250121171736">WDT
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||
注册了一个
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||
<code class="+ topic/ph pr-d/codeph ph codeph">test_wdt</code>
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命令，用于测试
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||
WDT
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||
的其他功能，比如喂狗，预处理等。以下为具体的使用示例：<ol class="- topic/ol ol" id="id__ol_c3y_y1h_ddc" data-ofbid="id__ol_c3y_y1h_ddc"><li class="- topic/li li" data-ofbid="d268464e119__20250121171736">设置 timeout 为 3
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秒并开启看门狗：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_rxr_cbh_ddc" data-ofbid="id__codeblock_rxr_cbh_ddc">test_wdt -s <span class="hl-number">3</span></pre><p class="- topic/p p" data-ofbid="d268464e123__20250121171736">结果：系统会在
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3 秒后重启。</p></li><li class="- topic/li li" data-ofbid="d268464e125__20250121171736">设置 pretimeout 为 3
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秒并开启超时中断：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_h3y_gbh_ddc" data-ofbid="id__codeblock_h3y_gbh_ddc">test_wdt -p <span class="hl-number">3</span>
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</pre><p class="- topic/p p" data-ofbid="d268464e129__20250121171736">结果：3 秒后触发超时中断。</p></li><li class="- topic/li li" data-ofbid="d268464e131__20250121171736">设置清除窗口为 3
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秒：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_hzc_jbh_ddc" data-ofbid="id__codeblock_hzc_jbh_ddc">test_wdt -c <span class="hl-number">3</span>
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</pre><p class="- topic/p p" data-ofbid="d268464e135__20250121171736">结果：计数到 3 秒之后才能“喂狗”。</p></li><li class="- topic/li li" data-ofbid="d268464e137__20250121171736">获取当前的
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timeout：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_nfh_jbh_ddc" data-ofbid="id__codeblock_nfh_jbh_ddc">test_wdt -g
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</pre><p class="- topic/p p" data-ofbid="d268464e141__20250121171736">结果：返回当前的 timeout 值。</p></li><li class="- topic/li li" data-ofbid="d268464e143__20250121171736">开启喂狗功能（空闲钩子）：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_rxx_kbh_ddc" data-ofbid="id__codeblock_rxx_kbh_ddc">test_wdt -k
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</pre><p class="- topic/p p" data-ofbid="d268464e147__20250121171736">结果：开启喂狗功能，防止系统因长时间未操作而重启。</p></li></ol></div>
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<p class="- topic/p p" data-ofbid="d268464e150__20250121171736">使用 <code class="+ topic/ph pr-d/codeph ph codeph">test_wdt -u</code> 帮助命令可以获取 WDT 相关帮助信息：</p>
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<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_uwy_hxh_bdc" data-ofbid="id__codeblock_uwy_hxh_bdc">test_wdt -u</pre>
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<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_jg3_zv3_5dc" data-ofbid="id__codeblock_jg3_zv3_5dc">Usage: test_wdt [-s timeout][-p pretimeout][-c clear threshold][-g][-k][-u]
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-s, --set-timeout Set a timeout, in second
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-p, --set-pretimeout Set a pretimeout, in second
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-c, --set-clear threshold Set clear threshold,in second(<span class="hl-number">0</span>~<span class="hl-number">3</span>)
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-g, --get-timeout Get the current timeout, in second
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-k, --keepalive Keepalive the watchdog
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-u, --usage
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</pre>
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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">准备测试环境</a></div></li><li class="section-item"><div class="section-title"><a href="#id__id5" data-tocid="id__id5">打开 <code class="+ topic/ph pr-d/codeph ph codeph">test-wdt</code></a></div></li><li class="section-item"><div class="section-title"><a href="#id__id6" data-tocid="id__id6">测试
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Watchdog
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复位功能</a></div></li><li class="section-item"><div class="section-title"><a href="#id__id7" data-tocid="id__id7">测试
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Watchdog
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的综合功能</a></div></li></ul></div>
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