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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/xcap/xcap_design_guide.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">设计说明</h1><div class="date inPage">21 Nov 2024</div><div style="color: gray;">
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Read time: 7 minute(s)
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</div><div class="- topic/body body"><section class="- topic/section section" id="id__section_ww1_hpf_fdc" data-ofbid="id__section_ww1_hpf_fdc"><h2 class="- topic/title title sectiontitle">源码说明</h2>
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<p class="- topic/p p" data-ofbid="d75423e22__20250121171523">源代码位于 <code class="+ topic/ph pr-d/codeph ph codeph">bsp/artinchip/</code>：</p>
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<ul class="- topic/ul ul simple" id="id__ul_ncl_zyh_fdc" data-ofbid="id__ul_ncl_zyh_fdc"><li class="- topic/li li" data-ofbid="d75423e29__20250121171523">
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<p class="- topic/p p" data-ofbid="d75423e31__20250121171523">bsp/artinchip/drv/inputcap/drv_inputcap.c，CAP Driver 层实现</p>
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</li><li class="- topic/li li" data-ofbid="d75423e34__20250121171523">
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<p class="- topic/p p" data-ofbid="d75423e36__20250121171523">bsp/artinchip/hal/inputcap/hal_inputcap.c，CAP 模块的 HAL 层实现</p>
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</li><li class="- topic/li li" data-ofbid="d75423e39__20250121171523">
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<p class="- topic/p p" data-ofbid="d75423e41__20250121171523">bsp/artinchip/include/hal/hal_inputcap.h，CAP 模块的 HAL 层接口头文件</p>
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</li></ul>
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</section><section class="- topic/section section" id="id__section_vbn_1zh_fdc" data-ofbid="id__section_vbn_1zh_fdc"><h2 class="- topic/title title sectiontitle">模块架构</h2>
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<div class="- topic/div div section" id="id__id3">
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<p class="- topic/p p" data-ofbid="d75423e52__20250121171523">CAP 驱动 Driver 层采用 RT-Thread 的 INPUT CAPTURE 设备驱动框架。HAL 层也可以支持 Baremetal
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方式或配合自定义的设备驱动框架进行使用。 </p>
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<figure class="- topic/fig fig fignone" id="id__id7" data-ofbid="id__id7"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="id__image_ocl_zyh_fdc" src="../../../images/cap/sw_system12.png" alt="sw_system12"/></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">CAP 驱动的软件架构图</span></figcaption></figure>
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</div>
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</section><section class="- topic/section section" id="id__section_bbz_1zh_fdc" data-ofbid="id__section_bbz_1zh_fdc"><h2 class="- topic/title title sectiontitle">关键流程设计</h2>
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<div class="- topic/div div section" id="id__id5">
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<strong class="+ topic/ph hi-d/b ph b">初始化流程</strong>
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<p class="- topic/p p" data-ofbid="d75423e73__20250121171523">CAP 驱动的初始化接口通过 <code class="+ topic/ph pr-d/codeph ph codeph">INIT_DEVICE_EXPORT(drv_inputcap_init)</code> 完成，主要是通过调用
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INPUT CAPTURE 子系统的接口 rt_device_inputcapture_register() 注册一个 CAP 设备。</p><p class="- topic/p p" data-ofbid="d75423e78__20250121171523">CAP
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控制器的配置过程，主要步骤有：</p><ol class="- topic/ol ol arabic simple" id="id__ol_pcl_zyh_fdc" data-ofbid="id__ol_pcl_zyh_fdc"><li class="- topic/li li" data-ofbid="d75423e81__20250121171523">
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<p class="- topic/p p" data-ofbid="d75423e83__20250121171523">初始化 CAP 模块的 clk</p>
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</li><li class="- topic/li li" data-ofbid="d75423e86__20250121171523">
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<p class="- topic/p p" data-ofbid="d75423e88__20250121171523">使能 CAP 指定通道的 clk</p>
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</li><li class="- topic/li li" data-ofbid="d75423e91__20250121171523">
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<p class="- topic/p p" data-ofbid="d75423e93__20250121171523">设置 CAP 捕捉事件</p>
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</li><li class="- topic/li li" data-ofbid="d75423e96__20250121171523">
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<p class="- topic/p p" data-ofbid="d75423e98__20250121171523">使能 CAP 的中断或 DMA</p>
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</li><li class="- topic/li li" data-ofbid="d75423e101__20250121171523">
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<p class="- topic/p p" data-ofbid="d75423e103__20250121171523">启动 CAP 计数</p>
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</li></ol></div>
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</section><section class="- topic/section section" id="id__section_tkj_bzh_fdc" data-ofbid="id__section_tkj_bzh_fdc"><h2 class="- topic/title title sectiontitle">数据结构设计</h2>
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<div class="- topic/div div section" id="id__struct-aic-inputcap-pdata">
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<strong class="+ topic/ph hi-d/b ph b">struct aic_inputcap_pdata</strong>
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<div class="- topic/p p" data-ofbid="d75423e117__20250121171523">属于 HAL 层接口，记录每一个 CAP
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通道的捕捉数据信息：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_vgj_dzh_fdc" data-ofbid="id__codeblock_vgj_dzh_fdc"><strong class="hl-keyword">struct</strong> aic_inputcap_pdata {
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u8 id;
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u8 isr_event;
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<strong class="hl-keyword">enum</strong> inputcap_polarity event0_pol;
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<strong class="hl-keyword">enum</strong> inputcap_polarity event1_pol;
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u32 cur_cnt;
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u32 last_cnt;
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<strong class="hl-keyword">struct</strong> aic_inputcap_transfer_info t_info0;
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<strong class="hl-keyword">struct</strong> aic_inputcap_transfer_info t_info1;
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};</pre></div>
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</div>
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<div class="- topic/div div section" id="id__struct-aic-inputcap">
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<strong class="+ topic/ph hi-d/b ph b">struct aic_inputcap</strong>
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<div class="- topic/p p" data-ofbid="d75423e128__20250121171523">属于 Driver 层接口，记录一个 CAP
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设备的配置信息：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_xnw_dzh_fdc" data-ofbid="id__codeblock_xnw_dzh_fdc"><strong class="hl-keyword">struct</strong> aic_inputcap {
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<strong class="hl-keyword">struct</strong> rt_inputcapture_device rtdev;
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<strong class="hl-keyword">struct</strong> aic_inputcap_pdata *data;
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};</pre></div></div>
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</section><section class="- topic/section section" id="id__section_tfx_czh_fdc" data-ofbid="id__section_tfx_czh_fdc"><h2 class="- topic/title title sectiontitle">Driver 层接口设计</h2>
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<div class="- topic/p p" data-ofbid="d75423e138__20250121171523">以下接口是 INPUT CAPTURE
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设备驱动框架的标准接口。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_q13_2zh_fdc" data-ofbid="id__codeblock_q13_2zh_fdc"><strong class="hl-keyword">struct</strong> rt_inputcapture_ops
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{
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rt_err_t (*init)(<strong class="hl-keyword">struct</strong> rt_inputcapture_device *inputcapture);
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rt_err_t (*open)(<strong class="hl-keyword">struct</strong> rt_inputcapture_device *inputcapture);
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rt_err_t (*close)(<strong class="hl-keyword">struct</strong> rt_inputcapture_device *inputcapture);
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rt_err_t (*get_pulsewidth)(<strong class="hl-keyword">struct</strong> rt_inputcapture_device *inputcapture, rt_uint32_t *pulsewidth_us);
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#<strong class="hl-keyword">if</strong> defined (AIC_INPUTCAP_DRV) && defined (AIC_DMA_DRV)
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rt_err_t (*set_buf)(<strong class="hl-keyword">struct</strong> rt_inputcapture_device *inputcapture, <strong class="hl-keyword">struct</strong> rt_inputcapture_fifo_buf *ptr);
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#endif
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};</pre></div>
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<p class="- topic/p p" data-ofbid="d75423e143__20250121171523">其中 <code class="+ topic/ph pr-d/codeph ph codeph">(*set_buf)</code> 为 CAP 拓展的接口，用于 DMA 模式。 </p>
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<div class="table-container"><table class="- topic/table table frame-all" id="id__table_qcl_zyh_fdc" data-ofbid="id__table_qcl_zyh_fdc" data-cols="2"><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">aic_inputcap_init</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_qcl_zyh_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_qcl_zyh_fdc__entry__2">static rt_err_t aic_inputcap_init(struct
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rt_inputcapture_device *inputcapture)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qcl_zyh_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qcl_zyh_fdc__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qcl_zyh_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qcl_zyh_fdc__entry__2">
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<div class="- topic/div div">
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<div class="- topic/div div">inputcapture - 指向 rt_inputcapture_device 设备的指针</div>
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</div>
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</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_qcl_zyh_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_qcl_zyh_fdc__entry__2">0，成功；<0，失败</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_qcl_zyh_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_qcl_zyh_fdc__entry__2">- </td></tr></tbody></table></div>
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||
<div class="table-container"><table class="- topic/table table frame-all" id="id__table_rcl_zyh_fdc" data-ofbid="id__table_rcl_zyh_fdc" data-cols="2"><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"> 2</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aic_inputcap_open</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_rcl_zyh_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_rcl_zyh_fdc__entry__2">static rt_err_t aic_inputcap_open(struct
|
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rt_inputcapture_device *inputcapture)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_rcl_zyh_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_rcl_zyh_fdc__entry__2">并配置使能 CAP</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_rcl_zyh_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_rcl_zyh_fdc__entry__2">
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<div class="- topic/div div">
|
||
<div class="- topic/div div">inputcapture - 指向 rt_inputcapture_device 设备的指针</div>
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||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_rcl_zyh_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_rcl_zyh_fdc__entry__2">0，成功；<0，失败</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_rcl_zyh_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_rcl_zyh_fdc__entry__2">- </td></tr></tbody></table></div>
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||
<div class="table-container"><table class="- topic/table table frame-all" id="id__table_scl_zyh_fdc" data-ofbid="id__table_scl_zyh_fdc" data-cols="2"><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"> 3</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aic_inputcap_close</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_scl_zyh_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_scl_zyh_fdc__entry__2">static rt_err_t aic_inputcap_close(struct
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rt_inputcapture_device *inputcapture)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_scl_zyh_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_scl_zyh_fdc__entry__2">关闭 CAP</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_scl_zyh_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_scl_zyh_fdc__entry__2">
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<div class="- topic/div div">
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<div class="- topic/div div">inputcapture - 指向 rt_inputcapture_device 设备的指针</div>
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</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_scl_zyh_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_scl_zyh_fdc__entry__2">0，成功；<0，失败</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_scl_zyh_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_scl_zyh_fdc__entry__2">- </td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="id__table_tcl_zyh_fdc" data-ofbid="id__table_tcl_zyh_fdc" data-cols="2"><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"> 4</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aic_inputcap_get_pulsewidth</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_tcl_zyh_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_tcl_zyh_fdc__entry__2">static rt_err_t aic_inputcap_get_pulsewidth(struct
|
||
rt_inputcapture_device *inputcapture, rt_uint32_t
|
||
*pulsewidth_us)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_tcl_zyh_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_tcl_zyh_fdc__entry__2">计算脉冲间隔时间</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_tcl_zyh_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_tcl_zyh_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">inputcapture - 指向 rt_inputcapture_device 设备的指针</div>
|
||
<div class="- topic/div div">pulsewidth_us - RT-Thread 回调参数脉冲间隔变量的指针</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_tcl_zyh_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_tcl_zyh_fdc__entry__2">0，成功；<0，失败</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_tcl_zyh_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_tcl_zyh_fdc__entry__2">- </td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="id__table_ucl_zyh_fdc" data-ofbid="id__table_ucl_zyh_fdc" data-cols="2"><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"> 5</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">aic_inputcap_setbuf</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="id__table_ucl_zyh_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="id__table_ucl_zyh_fdc__entry__2">static rt_err_t aic_inputcap_setbuf(struct
|
||
rt_inputcapture_device *inputcapture, struct
|
||
rt_inputcapture_fifo_buf *ptr)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ucl_zyh_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ucl_zyh_fdc__entry__2">设置 DMA 的 BUFF 地址</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ucl_zyh_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ucl_zyh_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">inputcapture - 指向 rt_inputcapture_device 设备的指针</div>
|
||
<div class="- topic/div div">ptr - 指向 rt_inputcapture_fifo_buf FIFO 地址、长度信息</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="id__table_ucl_zyh_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="id__table_ucl_zyh_fdc__entry__2">0，成功；<0，失败</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="id__table_ucl_zyh_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="id__table_ucl_zyh_fdc__entry__2">当使用 DMA 模式才需要设置</td></tr></tbody></table></div>
|
||
</section><section class="- topic/section section" id="id__section_wyd_hzh_fdc" data-ofbid="id__section_wyd_hzh_fdc"><h2 class="- topic/title title sectiontitle">HAL 层接口设计</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d75423e361__20250121171523">HAL 层的函数接口声明存放在 hal_cap.h
|
||
中，主要接口有：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_r5g_3zh_fdc" data-ofbid="id__codeblock_r5g_3zh_fdc"><strong class="hl-keyword">void</strong> hal_inputcap_evnt_en(u32 i, u32 event, u32 enable);
|
||
<strong class="hl-keyword">void</strong> hal_inputcap_pol_set(u32 i, u32 event, <strong class="hl-keyword">enum</strong> inputcap_polarity event_pol);
|
||
<strong class="hl-keyword">void</strong> hal_inputcap_cnt_en(u32 i, u32 enable);
|
||
u32 hal_inputcap_get_cnt(u32 i);
|
||
<strong class="hl-keyword">void</strong> hal_inputcap_set_fifo(u32 i, u32 fifo, u32 enable);
|
||
u32 hal_inputcap_int_stat(u32 i);
|
||
<strong class="hl-keyword">void</strong> hal_inputcap_int_clr(u32 i, u32 mask);
|
||
u32 hal_inputcap_get_event_fifo(u32 i, u32 fifo);
|
||
<strong class="hl-keyword">void</strong> hal_inputcap_fifo_flush(u32 i, u32 fifo);
|
||
#ifdef AIC_DMA_DRV
|
||
<strong class="hl-keyword">void</strong> hal_inputcap_dma_config(<strong class="hl-keyword">struct</strong> aic_inputcap_pdata *chan, u32 event,
|
||
dma_async_callback callback, <strong class="hl-keyword">void</strong> *callback_param);
|
||
#endif</pre></div>
|
||
</section><section class="- topic/section section" id="id__section_lbm_hzh_fdc" data-ofbid="id__section_lbm_hzh_fdc"><h2 class="- topic/title title sectiontitle">Demo</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d75423e371__20250121171523">本 Demo 是 test_inputcap
|
||
的部分源码（bsp/examples/test-inputcap/test_inputcap.c）：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_y5n_3zh_fdc" data-ofbid="id__codeblock_y5n_3zh_fdc">#<span class="hl-directive">define</span> WATER_MARK <span class="hl-number">64</span>
|
||
|
||
#ifdef AIC_DMA_DRV
|
||
#<span class="hl-directive">define</span> INPUTCAP_CLK_RATE <span class="hl-number">48000000</span>
|
||
rt_uint32_t data_buf0[WATER_MARK] __attribute__((aligned(<span class="hl-number">32</span>))) = {<span class="hl-number">0</span>};
|
||
rt_uint32_t data_buf1[WATER_MARK] __attribute__((aligned(<span class="hl-number">32</span>))) = {<span class="hl-number">0</span>};
|
||
rt_uint8_t event0_flag = <span class="hl-number">0</span>;
|
||
rt_uint8_t event1_flag = <span class="hl-number">0</span>;
|
||
#endif
|
||
|
||
<em class="hl-comment">/* callback function */</em>
|
||
<strong class="hl-keyword">static</strong> rt_err_t inputcap_cb(rt_device_t dev, rt_size_t size)
|
||
{
|
||
#ifdef AIC_DMA_DRV
|
||
rt_uint8_t *p = dev->user_data;
|
||
|
||
<strong class="hl-keyword">if</strong> ((rt_uint32_t)*p == <span class="hl-number">0</span>)
|
||
event0_flag = <span class="hl-number">1</span>;
|
||
<strong class="hl-keyword">else</strong>
|
||
event1_flag = <span class="hl-number">1</span>;
|
||
|
||
#ifdef ULOG_USING_ISR_LOG
|
||
rt_uint32_t temp_cnt;
|
||
<strong class="hl-keyword">if</strong> ((rt_uint32_t)*p == <span class="hl-number">0</span>) {
|
||
<strong class="hl-keyword">for</strong> (<strong class="hl-keyword">int</strong> i = <span class="hl-number">0</span>; i < WATER_MARK - <span class="hl-number">1</span>; i++) {
|
||
<strong class="hl-keyword">if</strong> (data_buf0[i + <span class="hl-number">1</span>] > data_buf0[i])
|
||
temp_cnt = data_buf0[i + <span class="hl-number">1</span>] - data_buf0[i];
|
||
<strong class="hl-keyword">else</strong>
|
||
temp_cnt = data_buf0[i + <span class="hl-number">1</span>] + ((<span class="hl-number">0xFFFFFFFF</span> - data_buf0[i]) + <span class="hl-number">1</span>);
|
||
|
||
rt_kprintf(<span class="hl-string">"%s event%d: pulsewidth:%d us\n"</span>, &dev->parent.name, (rt_uint32_t)*p, temp_cnt / (INPUTCAP_CLK_RATE / <span class="hl-number">1000000</span>));
|
||
}
|
||
} <strong class="hl-keyword">else</strong> {
|
||
<strong class="hl-keyword">for</strong> (<strong class="hl-keyword">int</strong> i = <span class="hl-number">0</span>; i < WATER_MARK - <span class="hl-number">1</span>; i++) {
|
||
<strong class="hl-keyword">if</strong> (data_buf1[i + <span class="hl-number">1</span>] > data_buf1[i])
|
||
temp_cnt = data_buf1[i + <span class="hl-number">1</span>] - data_buf1[i];
|
||
<strong class="hl-keyword">else</strong>
|
||
temp_cnt = data_buf1[i + <span class="hl-number">1</span>] + ((<span class="hl-number">0xFFFFFFFF</span> - data_buf1[i]) + <span class="hl-number">1</span>);
|
||
|
||
rt_kprintf(<span class="hl-string">"%s event%d: pulsewidth:%d us\n"</span>, &dev->parent.name, (rt_uint32_t)*p, temp_cnt / (INPUTCAP_CLK_RATE / <span class="hl-number">1000000</span>));
|
||
}
|
||
}
|
||
#endif
|
||
|
||
#<strong class="hl-keyword">else</strong>
|
||
<strong class="hl-keyword">struct</strong> rt_inputcapture_data inputcap_data[WATER_MARK];
|
||
rt_device_read(dev, <span class="hl-number">0</span>, (<strong class="hl-keyword">void</strong> *)inputcap_data, size);
|
||
#ifdef ULOG_USING_ISR_LOG
|
||
<strong class="hl-keyword">for</strong> (<strong class="hl-keyword">int</strong> i = <span class="hl-number">0</span>; i < size; i++)
|
||
rt_kprintf(<span class="hl-string">"%s: pulsewidth:%d us\n"</span>, &dev->parent.name, inputcap_data[i].pulsewidth_us);
|
||
#endif
|
||
#endif
|
||
<strong class="hl-keyword">return</strong> RT_EOK;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> test_inputcap(<strong class="hl-keyword">int</strong> argc, <strong class="hl-keyword">char</strong> **argv)
|
||
{
|
||
rt_uint32_t watermark = WATER_MARK;
|
||
rt_device_t inputcap_dev = RT_NULL;
|
||
<strong class="hl-keyword">char</strong> device_name[<span class="hl-number">8</span>] = {<span class="hl-string">"incap"</span>};
|
||
<strong class="hl-keyword">int</strong> ret;
|
||
|
||
<strong class="hl-keyword">if</strong> (argc != <span class="hl-number">2</span>) {
|
||
rt_kprintf(<span class="hl-string">"Usage: test_inputcap 0\n"</span>);
|
||
<strong class="hl-keyword">return</strong> -RT_EINVAL;
|
||
}
|
||
|
||
strcat(device_name, argv[<span class="hl-number">1</span>]);
|
||
|
||
inputcap_dev = rt_device_find(device_name);
|
||
<strong class="hl-keyword">if</strong> (inputcap_dev == RT_NULL) {
|
||
rt_kprintf(<span class="hl-string">"Can't find %s device!\n"</span>, device_name);
|
||
<strong class="hl-keyword">return</strong> -RT_EEMPTY;
|
||
}
|
||
|
||
#ifdef AIC_DMA_DRV
|
||
<strong class="hl-keyword">struct</strong> rt_inputcapture_fifo_buf buf_para;
|
||
buf_para.event0_buf = data_buf0;
|
||
buf_para.event0_buflen = <strong class="hl-keyword">sizeof</strong>(data_buf0);
|
||
buf_para.event1_buf = data_buf1;
|
||
buf_para.event1_buflen = <strong class="hl-keyword">sizeof</strong>(data_buf1);
|
||
ret = rt_device_control(inputcap_dev, INPUTCAPTURE_CMD_SET_DATA_BUF, (<strong class="hl-keyword">void</strong> *)&buf_para);
|
||
<strong class="hl-keyword">if</strong> (ret != RT_EOK) {
|
||
rt_kprintf(<span class="hl-string">"Failed to set %s device watermark!\n"</span>, device_name);
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
#endif
|
||
ret = rt_device_control(inputcap_dev, INPUTCAPTURE_CMD_SET_WATERMARK, &watermark);
|
||
<strong class="hl-keyword">if</strong> (ret != RT_EOK) {
|
||
rt_kprintf(<span class="hl-string">"Failed to set %s device watermark!\n"</span>, device_name);
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
|
||
<em class="hl-comment">/* set callback function */</em>
|
||
rt_device_set_rx_indicate(inputcap_dev, inputcap_cb);
|
||
|
||
ret = rt_device_open(inputcap_dev, RT_DEVICE_OFLAG_RDWR);
|
||
<strong class="hl-keyword">if</strong> (ret != RT_EOK) {
|
||
rt_kprintf(<span class="hl-string">"Failed to open %s device!\n"</span>, device_name);
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
|
||
rt_kprintf(<span class="hl-string">"inputcap%d open.\n"</span>, atoi(argv[<span class="hl-number">1</span>]));
|
||
|
||
#ifdef AIC_DMA_DRV
|
||
<strong class="hl-keyword">int</strong> wait_count = <span class="hl-number">1000</span>;
|
||
<strong class="hl-keyword">while</strong> (<span class="hl-number">1</span>) {
|
||
<strong class="hl-keyword">if</strong> (event0_flag == <span class="hl-number">1</span> && event1_flag == <span class="hl-number">1</span>) {
|
||
event0_flag = <span class="hl-number">0</span>;
|
||
event1_flag = <span class="hl-number">0</span>;
|
||
rt_device_close(inputcap_dev);
|
||
<strong class="hl-keyword">break</strong>;
|
||
}
|
||
rt_thread_mdelay(<span class="hl-number">10</span>);
|
||
wait_count--;
|
||
<strong class="hl-keyword">if</strong> (wait_count == <span class="hl-number">0</span>) {
|
||
rt_kprintf(<span class="hl-string">"no signal input!\n"</span>);
|
||
rt_device_close(inputcap_dev);
|
||
<strong class="hl-keyword">break</strong>;
|
||
}
|
||
}
|
||
rt_kprintf(<span class="hl-string">"inputcap%d close.\n"</span>, atoi(argv[<span class="hl-number">1</span>]));
|
||
#endif
|
||
|
||
<strong class="hl-keyword">return</strong> <span class="hl-number">0</span>;
|
||
}
|
||
MSH_CMD_EXPORT_ALIAS(test_inputcap, test_inputcap, Test the inputcap);</pre></div>
|
||
</section></div></article></main></div>
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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__section_ww1_hpf_fdc" data-tocid="id__section_ww1_hpf_fdc">源码说明</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_vbn_1zh_fdc" data-tocid="id__section_vbn_1zh_fdc">模块架构</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_bbz_1zh_fdc" data-tocid="id__section_bbz_1zh_fdc">关键流程设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_tkj_bzh_fdc" data-tocid="id__section_tkj_bzh_fdc">数据结构设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_tfx_czh_fdc" data-tocid="id__section_tfx_czh_fdc">Driver 层接口设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_wyd_hzh_fdc" data-tocid="id__section_wyd_hzh_fdc">HAL 层接口设计</a></div></li><li class="section-item"><div class="section-title"><a href="#id__section_lbm_hzh_fdc" data-tocid="id__section_lbm_hzh_fdc">Demo</a></div></li></ul></div>
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