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id="tsensor_key_procedures-d3703e3448-link">关键流程设计</a></div></div></li><li role="treeitem"><div data-tocid="tsensor_data_structure-d3703e3462" class="topicref" data-id="tsensor_data_structure" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/tsensor/tsensor-data-structure.html" id="tsensor_data_structure-d3703e3462-link">数据结构设计</a></div></div></li><li role="treeitem"><div data-tocid="tsensor_interface_design_luban_lite-d3703e3476" class="topicref" data-id="tsensor_interface_design_luban_lite" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/tsensor/tsensor-interface-design-lite.html" id="tsensor_interface_design_luban_lite-d3703e3476-link">接口设计</a></div></div></li><li role="treeitem" class="active"><div data-tocid="tsensor_demo_luban_lite-d3703e3490" class="topicref" data-id="tsensor_demo_luban_lite" data-state="leaf"><span role="button" 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data-id="chapter-memory" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-memory-d3703e3646-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-memory-sdk.html" id="chapter-memory-d3703e3646-link">存储</a><div class="wh-tooltip"><p class="shortdesc">SDMC、<span class="ph">PSRAM、</span>SPI NAND、SPI NOR 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-d3703e3980" 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-d3703e3980-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-multi-media-sdk.html" id="concept_mcc_32s_nbc-d3703e3980-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-d3703e5421" 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-d3703e5421-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-interface-sdk.html" id="concept_nww_hzh_pzb-d3703e5421-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-d3703e6676" class="topicref" data-id="chapter-safety" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-safety-d3703e6676-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-safety-sdk.html" id="chapter-safety-d3703e6676-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>
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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">
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<span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://aicdocco/taskstopics/sdk/tsensor/tsensor-demo-lite.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">Demo</h1>
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<div class="date inPage">9 Apr 2025</div><div style="color: gray;">
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Read time: 1 minute(s)
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</div>
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<div class="- topic/body concept/conbody body conbody">
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<div class="- topic/p p" data-ofbid="d187133e33__20250409171052">以下代码片段展示了一个用于传感器轮询的函数 <code class="+ topic/ph pr-d/codeph ph codeph">sensor_polling</code>，可以作为 TSensor
|
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设备的使用参考。<code class="+ topic/ph pr-d/codeph ph codeph">sensor_polling</code> 从命令行参数中获取设备名称和读取次数，并读取传感器数据并显示。关于
|
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<span class="+ topic/keyword sw-d/cmdname keyword cmdname">sensor_polling</span> 命令的代码，详见
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">kernel/rt-thread/components/drivers/sensors/sensor_cmd.c</span>：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="tsensor_demo_luban_lite__codeblock_dnr_crg_ddc" data-ofbid="tsensor_demo_luban_lite__codeblock_dnr_crg_ddc"><strong class="hl-keyword">static</strong> <strong class="hl-keyword">void</strong> sensor_polling(<strong class="hl-keyword">int</strong> argc, <strong class="hl-keyword">char</strong> **argv)
|
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{
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rt_uint16_t num = <span class="hl-number">10</span>;
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rt_device_t dev = RT_NULL;
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rt_sensor_t sensor;
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<strong class="hl-keyword">struct</strong> rt_sensor_data data;
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rt_size_t res, i;
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rt_int32_t delay;
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rt_err_t result;
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dev = rt_device_find(argv[<span class="hl-number">1</span>]);
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<strong class="hl-keyword">if</strong> (dev == RT_NULL)
|
||
{
|
||
LOG_E(<span class="hl-string">"Can't find device:%s"</span>, argv[<span class="hl-number">1</span>]);
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<strong class="hl-keyword">return</strong>;
|
||
}
|
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<strong class="hl-keyword">if</strong> (argc > <span class="hl-number">2</span>)
|
||
num = atoi(argv[<span class="hl-number">2</span>]);
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sensor = (rt_sensor_t)dev;
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||
delay = sensor->info.period_min > <span class="hl-number">100</span> ? sensor->info.period_min : <span class="hl-number">100</span>;
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<strong class="hl-keyword">for</strong> (i = <span class="hl-number">0</span>; i < num; i++)
|
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{
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||
res = rt_device_read(dev, <span class="hl-number">0</span>, &data, <span class="hl-number">1</span>);
|
||
<strong class="hl-keyword">if</strong> (res != <span class="hl-number">1</span>)
|
||
{
|
||
LOG_E(<span class="hl-string">"read data failed!size is %d"</span>, res);
|
||
}
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||
<strong class="hl-keyword">else</strong>
|
||
{
|
||
sensor_show_data(i, sensor, &data);
|
||
}
|
||
rt_thread_mdelay(delay);
|
||
}
|
||
rt_device_close(dev);
|
||
}</pre></div>
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