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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/dvp/dvp_test.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">测试指南</h1><div class="date inPage">24 Dec 2024</div><div style="color: gray;">
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Read time: 2 minute(s)
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</div><div class="- topic/body concept/conbody body conbody"><section class="- topic/section section" id="dvp_test_guide__section_bzy_ykt_2bc" data-ofbid="dvp_test_guide__section_bzy_ykt_2bc"><h2 class="- topic/title title sectiontitle">测试环境</h2>
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<div class="- topic/p p" data-ofbid="d144696e27__20250121171610">
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<ul class="- topic/ul ul" id="dvp_test_guide__ul_dsq_124_f1c" data-ofbid="dvp_test_guide__ul_dsq_124_f1c"><li class="- topic/li li" data-ofbid="d144696e30__20250121171610"><strong class="+ topic/ph hi-d/b ph b">硬件</strong><ul class="- topic/ul ul" id="dvp_test_guide__ul_vsk_dzg_d1c" data-ofbid="dvp_test_guide__ul_vsk_dzg_d1c"><li class="- topic/li li" data-ofbid="d144696e34__20250121171610">
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<p class="- topic/p p" data-ofbid="d144696e36__20250121171610">开发板，或者 D211 的 FPGA 板</p>
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</li><li class="- topic/li li" data-ofbid="d144696e39__20250121171610">
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<p class="- topic/p p" data-ofbid="d144696e41__20250121171610">可转接摄像头的子板</p>
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</li><li class="- topic/li li" data-ofbid="d144696e44__20250121171610">
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<p class="- topic/p p" data-ofbid="d144696e46__20250121171610">摄像头，如 OV5640</p>
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</li></ul></li><li class="- topic/li li" data-ofbid="d144696e49__20250121171610"><strong class="+ topic/ph hi-d/b ph b">软件</strong><ul class="- topic/ul ul" id="dvp_test_guide__ul_wsk_dzg_d1c" data-ofbid="dvp_test_guide__ul_wsk_dzg_d1c"><li class="- topic/li li" data-ofbid="d144696e53__20250121171610">
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<p class="- topic/p p" data-ofbid="d144696e55__20250121171610">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="d144696e58__20250121171610">
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<p class="- topic/p p" data-ofbid="d144696e60__20250121171610">DVP 模块的测试 demo：test_dvp</p>
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</li></ul></li></ul>
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</div></section><section class="- topic/section section" id="dvp_test_guide__section_xsk_dzg_d1c" data-ofbid="dvp_test_guide__section_xsk_dzg_d1c"><h2 class="- topic/title title sectiontitle">软件配置</h2>
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<ol class="- topic/ol ol" id="dvp_test_guide__ol_is1_qzg_d1c" data-ofbid="dvp_test_guide__ol_is1_qzg_d1c"><li class="- topic/li li" id="dvp_test_guide__li_ccc_g34_f1c" data-ofbid="dvp_test_guide__li_ccc_g34_f1c">配置 OV5640 摄像头<div class="- topic/p p" data-ofbid="d144696e72__20250121171610">测试中需要用到摄像头，以 OV5640 为例，在
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Luban 的根目录下通过 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">make
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kernel-menuconfig</span>，按如下选择：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="dvp_test_guide__pre_ysk_dzg_d1c" data-ofbid="dvp_test_guide__pre_ysk_dzg_d1c">Linux
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Device Drivers
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Multimedia support
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Media ancillary drivers
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Camera sensor devices
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<*> OmniVision OV5640 sensor support
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</pre></div><div class="- topic/p p" data-ofbid="d144696e79__20250121171610">在 <span class="+ topic/ph sw-d/filepath ph filepath">board.dts</span> 中，也需要增加
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OV5640 的配置，假设 OV5640 是接在 I2C3
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通道：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="dvp_test_guide__codeblock_l3h_rzg_d1c" data-ofbid="dvp_test_guide__codeblock_l3h_rzg_d1c">&i2c3 {
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pinctrl-names = <span class="hl-string">"default"</span>;
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pinctrl-<span class="hl-number">0</span> = <&i2c3_pins_a>, <&clk_out1_pins>; <em class="hl-comment">/* i2c3 引脚及 clock 引脚 */</em>
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status = <span class="hl-string">"okay"</span>;
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ov5640: camera@<span class="hl-number">3</span>C {
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compatible = <span class="hl-string">"ovti,ov5640"</span>;
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reg = <<span class="hl-number">0x3C</span>>;
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clocks = <&cmu CLK_APB1>;
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clock-names = <span class="hl-string">"xclk"</span>;
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reset-gpios = <&gpio_p <span class="hl-number">5</span> GPIO_ACTIVE_LOW>;
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powerdown-gpios = <&gpio_p <span class="hl-number">6</span> GPIO_ACTIVE_HIGH>;
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port {
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ov5640_out: endpoint {
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remote-endpoint = <&dvp0_in>;
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<em class="hl-comment">/* V4L2_FWNODE_BUS_TYPE_BT656
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bus-type = <6>; */</em>
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bus-width = <<span class="hl-number">8</span>>;
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data-shift = <<span class="hl-number">2</span>>;
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hsync-active = <<span class="hl-number">0</span>>;
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vsync-active = <<span class="hl-number">1</span>>;
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pclk-sample = <<span class="hl-number">1</span>>;
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};
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};
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};
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};</pre><div class="- topic/note note note note_note" id="dvp_test_guide__note_gzj_szg_d1c" data-ofbid="dvp_test_guide__note_gzj_szg_d1c"><span class="note__title">注：</span>
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<ol class="- topic/ol ol" type="a" id="dvp_test_guide__ol_atk_dzg_d1c" data-ofbid="dvp_test_guide__ol_atk_dzg_d1c"><li class="- topic/li li" data-ofbid="d144696e89__20250121171610">
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<p class="- topic/p p" data-ofbid="d144696e91__20250121171610">如果要使用 BT656 模式，请打开 bus-type 参数。</p>
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</li><li class="- topic/li li" data-ofbid="d144696e94__20250121171610">
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<p class="- topic/p p" data-ofbid="d144696e96__20250121171610">如果是 YUV422，不需要配置 bus-type，代码中默认采用 YUV422（即
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V4L2_FWNODE_BUS_TYPE_PARALLEL，定义在
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<span class="+ topic/ph sw-d/filepath ph filepath">drivers/media/v4l2-core/v4l2-fwnode.c</span>）。</p>
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</li></ol>
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</div></div></li><li class="- topic/li li" data-ofbid="d144696e103__20250121171610">test_dvp 配置<p class="- topic/p p" data-ofbid="d144696e105__20250121171610">在 <span class="- topic/ph ph">Luban-Lite</span> 根目录，运行，按如下选择：</p><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="dvp_test_guide__pre_ctk_dzg_d1c" data-ofbid="dvp_test_guide__pre_ctk_dzg_d1c">ArtInChip packages
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Sample code
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[*] test-dvp
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</pre></li></ol>
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</section><section class="- topic/section section" id="dvp_test_guide__section_dtk_dzg_d1c" data-ofbid="dvp_test_guide__section_dtk_dzg_d1c"><h2 class="- topic/title title sectiontitle">test_dvp 测试</h2>
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<p class="- topic/p p" data-ofbid="d144696e118__20250121171610">test_dvp 的主要功能是将摄像头的数据采集后，传给 DE 模块的 Video 图层去显示。</p>
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<div class="- topic/p p" data-ofbid="d144696e121__20250121171610">在打开 test_dvp 的编译后，<span class="- topic/ph ph">板子上的 test_dvp 位于
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<span class="+ topic/ph sw-d/filepath ph filepath">/usr/local/bin/</span>，无需进入该目录，</span>直接运行 test_dvp
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即可：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="dvp_test_guide__codeblock_ztb_5zg_d1c" data-ofbid="dvp_test_guide__codeblock_ztb_5zg_d1c">test_dvp -u</pre><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="dvp_test_guide__codeblock_usx_vcs_5dc" data-ofbid="dvp_test_guide__codeblock_usx_vcs_5dc">Usage: test_dvp [options]:
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-f, --format format of input video, NV12/NV16 etc
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-c, --count the number of capture frame
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-w, --width the width of sensor
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-h, --height the height of sensor
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-r, --framerate the framerate of sensor
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-u, --usage
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-v, --verbose
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Example: test_dvp -f nv16 -c <span class="hl-number">1</span>
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</pre></div>
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||
<div class="- topic/p p" data-ofbid="d144696e134__20250121171610">示例：设置摄像头的分辨率为 720*576，帧率为 15 帧/s，使用 NV12 格式（默认）输出到 Video Layer 显示，共采集并显示 100
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帧数据：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="dvp_test_guide__codeblock_bmf_wcs_5dc" data-ofbid="dvp_test_guide__codeblock_bmf_wcs_5dc">test_dvp -w <span class="hl-number">720</span> -h <span class="hl-number">576</span> -r <span class="hl-number">15</span> -c <span class="hl-number">100</span></pre></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="#dvp_test_guide__section_bzy_ykt_2bc" data-tocid="dvp_test_guide__section_bzy_ykt_2bc">测试环境</a></div></li><li class="section-item"><div class="section-title"><a href="#dvp_test_guide__section_xsk_dzg_d1c" data-tocid="dvp_test_guide__section_xsk_dzg_d1c">软件配置</a></div></li><li class="section-item"><div class="section-title"><a href="#dvp_test_guide__section_dtk_dzg_d1c" data-tocid="dvp_test_guide__section_dtk_dzg_d1c">test_dvp 测试</a></div></li></ul></div>
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