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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/hrtimer/hrtimer-test_guide.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;">
Read time: 3 minute(s)
</div><div class="- topic/body concept/conbody body conbody"><section class="- topic/section section" id="hrtimer_test_guide__id2" data-ofbid="hrtimer_test_guide__id2"><h2 class="- topic/title title sectiontitle">准备测试环境</h2>
<ul class="- topic/ul ul" id="hrtimer_test_guide__ul_bvn_nl5_cdc" data-ofbid="hrtimer_test_guide__ul_bvn_nl5_cdc"><li class="- topic/li li" data-ofbid="d193170e30__20250121171631"><strong class="+ topic/ph hi-d/b ph b">硬件</strong><ul class="- topic/ul ul simple" id="hrtimer_test_guide__ul_jnc_s3d_bdc" data-ofbid="hrtimer_test_guide__ul_jnc_s3d_bdc"><li class="- topic/li li" data-ofbid="d193170e34__20250121171631">
<p class="- topic/p p" data-ofbid="d193170e36__20250121171631">开发板</p>
</li><li class="- topic/li li" data-ofbid="d193170e39__20250121171631">
<p class="- topic/p p" data-ofbid="d193170e41__20250121171631">USB 转串口的线缆</p>
</li></ul></li><li class="- topic/li li" data-ofbid="d193170e44__20250121171631"><strong class="+ topic/ph hi-d/b ph b">软件</strong><ul class="- topic/ul ul simple" id="hrtimer_test_guide__ul_knc_s3d_bdc" data-ofbid="hrtimer_test_guide__ul_knc_s3d_bdc"><li class="- topic/li li" data-ofbid="d193170e48__20250121171631">
<p class="- topic/p p" data-ofbid="d193170e50__20250121171631">PC 端的串口终端软件，用于 PC 和开发板进行串口通信</p>
</li><li class="- topic/li li" data-ofbid="d193170e53__20250121171631">
<p class="- topic/p p" data-ofbid="d193170e55__20250121171631"><span class="- topic/ph ph">Luban-Lite</span> 自带的 <code class="+ topic/ph pr-d/codeph ph codeph">test_hrtimer</code> 命令行工具</p>
</li></ul></li></ul>
</section><section class="- topic/section section" id="hrtimer_test_guide__id5" data-ofbid="hrtimer_test_guide__id5"><h2 class="- topic/title title sectiontitle">软件配置</h2>
<ol class="- topic/ol ol" id="hrtimer_test_guide__ol_oyl_244_tdc" data-ofbid="hrtimer_test_guide__ol_oyl_244_tdc"><li class="- topic/li li" data-ofbid="d193170e70__20250121171631">
<p class="- topic/p p" data-ofbid="d193170e72__20250121171631">在 SDK 根目录下执行 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">scons --menuconfig</span>，进入 menuconfig 的功能配置界面。</p>
</li><li class="- topic/li li" data-ofbid="d193170e78__20250121171631">
<div class="- topic/p p" data-ofbid="d193170e80__20250121171631">按如下选择，打开 <code class="+ topic/ph pr-d/codeph ph codeph">test_hrtimer</code>
命令行工具：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="hrtimer_test_guide__codeblock_tsy_244_tdc" data-ofbid="hrtimer_test_guide__codeblock_tsy_244_tdc">Drivers options ---&gt;
Drivers examples ---&gt;
[*] Enable HRTimer driver test command</pre></div>
</li><li class="- topic/li li" data-ofbid="d193170e88__20250121171631">
<div class="- topic/p p" data-ofbid="d193170e90__20250121171631">保存配置后，退出 menuconfig
并在根目录下执行下列命令进行编译：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="hrtimer_test_guide__codeblock_tpp_l44_tdc" data-ofbid="hrtimer_test_guide__codeblock_tpp_l44_tdc">scons</pre></div>
<p class="- topic/p p" data-ofbid="d193170e95__20250121171631">编译完成后，可以在终端中使用 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">test_hrtimer</span> 命令行工具。</p>
</li></ol>
</section><section class="- topic/section section" id="hrtimer_test_guide__section_kcv_cr4_tdc" data-ofbid="hrtimer_test_guide__section_kcv_cr4_tdc"><h2 class="- topic/title title sectiontitle">HRTimer 常见测试</h2>
<div class="- topic/p p" data-ofbid="d193170e107__20250121171631">使用 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">test_hrtimer</span> 命令分别创建和测试下列两类定时器：<div class="- topic/note note note note_note" id="hrtimer_test_guide__note_fky_jt4_tdc" data-ofbid="hrtimer_test_guide__note_fky_jt4_tdc"><span class="note__title">注：</span> 关于命令参数详细描述，可查看 <a class="- topic/xref xref" href="hrtimer-test_guide.html#hrtimer_test_guide__hrtimer">test_hrtimer 参数详解</a>。</div><ul class="- topic/ul ul" id="hrtimer_test_guide__ul_pcr_4r4_tdc" data-ofbid="hrtimer_test_guide__ul_pcr_4r4_tdc"><li class="- topic/li li" data-ofbid="d193170e119__20250121171631">
<div class="- topic/p p" data-ofbid="d193170e121__20250121171631">示例 1：启动一个 Oneshot 定时器，例如 <span class="+ topic/keyword pr-d/parmname keyword parmname">hrtime0</span>，超时时间为 2 秒 4
微秒。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="hrtimer_test_guide__codeblock_xym_f45_cdc" data-ofbid="hrtimer_test_guide__codeblock_xym_f45_cdc">test_hrtimer -c <span class="hl-number">0</span> -s <span class="hl-number">2</span> -u <span class="hl-number">4</span> -d</pre></div>
<div class="- topic/p p" data-ofbid="d193170e129__20250121171631">输出示例如下，表示创建成功：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="hrtimer_test_guide__codeblock_tmr_kl4_tdc" data-ofbid="hrtimer_test_guide__codeblock_tmr_kl4_tdc">hrtimer0: Create a timer of <span class="hl-number">2.000004</span> sec, Oneshot mode</pre></div>
<div class="- topic/p p" data-ofbid="d193170e134__20250121171631">当计时器超时时，可以看到如下调试日志输出：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="hrtimer_test_guide__codeblock_t1p_ft4_tdc" data-ofbid="hrtimer_test_guide__codeblock_t1p_ft4_tdc"><span class="hl-number">0</span>/<span class="hl-number">0</span> hrtimer0 timeout callback! Elapsed <span class="hl-number">2000012</span> us</pre></div>
</li><li class="- topic/li li" data-ofbid="d193170e139__20250121171631">
<p class="- topic/p p" data-ofbid="d193170e141__20250121171631">示例 2：启动一个 Period 定时器，例如 <span class="+ topic/keyword pr-d/parmname keyword parmname">HRTimer0</span>，超时时间为 3 秒 123
微秒，循环触发 19 次。</p>
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="hrtimer_test_guide__codeblock_ycq_345_cdc" data-ofbid="hrtimer_test_guide__codeblock_ycq_345_cdc">test_hrtimer -c <span class="hl-number">0</span> -s <span class="hl-number">3</span> -u <span class="hl-number">123</span> -d -m period</pre>
<div class="- topic/p p" data-ofbid="d193170e150__20250121171631">输出示例如下，表示创建成功：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="hrtimer_test_guide__codeblock_lwx_ss4_tdc" data-ofbid="hrtimer_test_guide__codeblock_lwx_ss4_tdc">hrtimer0: Create a timer of <span class="hl-number">3.000123</span> sec, Period mode
Will loop <span class="hl-number">19</span> times</pre></div>
<div class="- topic/p p" data-ofbid="d193170e155__20250121171631">当计时器每次超时时，调试日志输出如下所示：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="hrtimer_test_guide__codeblock_jp2_ct4_tdc" data-ofbid="hrtimer_test_guide__codeblock_jp2_ct4_tdc"><span class="hl-number">0</span>/<span class="hl-number">19</span> hrtimer0 timeout callback! Elapsed <span class="hl-number">3000129</span> us
<span class="hl-number">1</span>/<span class="hl-number">19</span> hrtimer0 timeout callback! Elapsed <span class="hl-number">2995773</span> us
...
<span class="hl-number">19</span>/<span class="hl-number">19</span> hrtimer0 timeout callback! Elapsed <span class="hl-number">2995689</span> us</pre></div>
<p class="- topic/p p" data-ofbid="d193170e160__20250121171631">本循环计数模式示例仅供演示使用，在持续大约 60
秒后会自动停止定时器。在实际使用过程中，如果配置了循环输出模式，则会不断输出直至配置为其他模式。</p>
</li></ul><div class="- topic/note note note note_note" id="hrtimer_test_guide__note_h1q_ws4_tdc" data-ofbid="hrtimer_test_guide__note_h1q_ws4_tdc"><span class="note__title">注：</span>
<p class="- topic/p p" data-ofbid="d193170e165__20250121171631">示例中的运行 log 出现了一些误差，属于合理现象。这是因为 HRTimer 的精度是微秒级，因此 RTOS
的调度、调试信息输出都会干扰到定时器的精度。</p>
</div></div>
</section><section class="- topic/section section" id="hrtimer_test_guide__hrtimer" data-ofbid="hrtimer_test_guide__hrtimer"><h2 class="- topic/title title sectiontitle">test_hrtimer 参数详解</h2>
<div class="- topic/p p" data-ofbid="d193170e174__20250121171631">以下是一个 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">test_hrtimer</span> 命令示例，配置 HRTimer0 为循环自动计数模式，并设置超时时间为 1 秒 3
微秒：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="hrtimer_test_guide__codeblock_fkj_s44_tdc" data-ofbid="hrtimer_test_guide__codeblock_fkj_s44_tdc">test_hrtimer -m oneshot -c <span class="hl-number">0</span> -s <span class="hl-number">2</span> -u <span class="hl-number">3</span></pre></div>
<div class="- topic/p p" data-ofbid="d193170e182__20250121171631"><span class="+ topic/keyword sw-d/cmdname keyword cmdname">test_hrtimer</span>
命令参数解释及示例如下所示：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="hrtimer_test_guide__codeblock_jgb_dp4_tdc" data-ofbid="hrtimer_test_guide__codeblock_jgb_dp4_tdc">test_hrtimer <var class="+ topic/keyword sw-d/varname keyword varname">parameter</var></pre><ul class="- topic/ul ul" id="hrtimer_test_guide__ul_ctz_qg4_tdc" data-ofbid="hrtimer_test_guide__ul_ctz_qg4_tdc"><li class="- topic/li li" data-ofbid="d193170e191__20250121171631"><code class="+ topic/ph pr-d/codeph ph codeph">-m <var class="+ topic/keyword sw-d/varname keyword varname">mode</var></code><div class="- topic/p p" data-ofbid="d193170e196__20250121171631">创建定时器类型，支持创建两类 Timer：<ul class="- topic/ul ul arabic simple" id="hrtimer_test_guide__ol_mnc_s3d_bdc" data-ofbid="hrtimer_test_guide__ol_mnc_s3d_bdc"><li class="- topic/li li" data-ofbid="d193170e199__20250121171631">
<div class="- topic/p p" data-ofbid="d193170e201__20250121171631"><code class="+ topic/ph pr-d/codeph ph codeph">oneshot</code>
类型定时器：单次触发，默认值。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="hrtimer_test_guide__codeblock_rnd_jp4_tdc" data-ofbid="hrtimer_test_guide__codeblock_rnd_jp4_tdc">-m oneshot</pre></div>
<p class="- topic/p p" data-ofbid="d193170e208__20250121171631">只触发一次超时，随后 Timer 会被注销。适用于需要一次性触发的任务，例如超时报警、单次事件等。</p>
</li><li class="- topic/li li" data-ofbid="d193170e211__20250121171631">
<div class="- topic/p p" data-ofbid="d193170e213__20250121171631"><code class="+ topic/ph pr-d/codeph ph codeph">period</code>
类型定时器：循环触发<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="hrtimer_test_guide__codeblock_rql_jp4_tdc" data-ofbid="hrtimer_test_guide__codeblock_rql_jp4_tdc">-m period</pre></div>
<p class="- topic/p p" data-ofbid="d193170e220__20250121171631">循环触发超时，适用于需要周期性触发的任务，例如心跳包发送、定时数据采集等。</p>
</li></ul></div></li><li class="- topic/li li" data-ofbid="d193170e223__20250121171631"><code class="+ topic/ph pr-d/codeph ph codeph">-c <var class="+ topic/keyword sw-d/varname keyword varname">HRTimer channel number</var></code>: <p class="- topic/p p" data-ofbid="d193170e229__20250121171631">指定使用的
HRTimer 通道编号，可选参数范围是 <code class="+ topic/ph pr-d/codeph ph codeph">[0, 2]</code>。</p><p class="- topic/p p" data-ofbid="d193170e234__20250121171631">示例：<code class="+ topic/ph pr-d/codeph ph codeph">-c
0</code> 或 <code class="+ topic/ph pr-d/codeph ph codeph">-c 2</code></p></li><li class="- topic/li li" data-ofbid="d193170e241__20250121171631"><code class="+ topic/ph pr-d/codeph ph codeph">-s <var class="+ topic/keyword sw-d/varname keyword varname">second</var></code><p class="- topic/p p" data-ofbid="d193170e246__20250121171631">设置定时器的秒数，必须大于
0。</p>示例：<code class="+ topic/ph pr-d/codeph ph codeph">-s 1</code>。</li><li class="- topic/li li" data-ofbid="d193170e252__20250121171631"><code class="+ topic/ph pr-d/codeph ph codeph">-u <var class="+ topic/keyword sw-d/varname keyword varname">microsecon</var></code><p class="- topic/p p" data-ofbid="d193170e257__20250121171631">设置定时器的微秒数，必须大于
0</p>示例：<code class="+ topic/ph pr-d/codeph ph codeph">-u 3</code> 表示设置微秒数为 3。</li><li class="- topic/li li" data-ofbid="d193170e263__20250121171631"><code class="+ topic/ph pr-d/codeph ph codeph">-d</code> 或
<code class="+ topic/ph pr-d/codeph ph codeph">--debug</code><p class="- topic/p p" data-ofbid="d193170e269__20250121171631">显示超时日志，用于调试目的。</p><p class="- topic/p p" data-ofbid="d193170e271__20250121171631"><span class="+ topic/keyword sw-d/cmdname keyword cmdname">test_hrtimer</span>
命令默认不打印定时器的超时信息，需要使用 <span class="+ topic/keyword pr-d/parmname keyword parmname">-d</span> 参数打开日志。</p></li><li class="- topic/li li" data-ofbid="d193170e278__20250121171631">
<div class="- topic/p p" data-ofbid="d193170e280__20250121171631"><code class="+ topic/ph pr-d/codeph ph codeph">h</code>:
显示帮助信息。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="hrtimer_test_guide__codeblock_w4h_yp4_tdc" data-ofbid="hrtimer_test_guide__codeblock_w4h_yp4_tdc">test_hrtimer -h
Usage: test_hrtimer [options]:
-m, --mode mode of timer, oneshot/period
-c, --channel the number of hrtimer [<span class="hl-number">0</span>, <span class="hl-number">2</span>]
-s, --second the second of timer (must &gt; <span class="hl-number">0</span>)
-u, --microsecond the microsecond of timer (must &gt; <span class="hl-number">0</span>)
-d, --debug show the timeout log
-h, --usage</pre></div>
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