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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" title="Edit this document" 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>
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|
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<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>
|
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<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>
|
||
|
||
<div class="- topic/p p" data-ofbid="d160198e37__20250123155216">
|
||
<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="d160198e41__20250123155216"><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="d160198e46__20250123155216">
|
||
<p class="- topic/p p" data-ofbid="d160198e48__20250123155216">开发板，或者 D211 的 FPGA 板</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d160198e52__20250123155216">
|
||
<p class="- topic/p p" data-ofbid="d160198e54__20250123155216">可转接摄像头的子板</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d160198e58__20250123155216">
|
||
<p class="- topic/p p" data-ofbid="d160198e60__20250123155216">摄像头，如 OV5640</p>
|
||
</li>
|
||
</ul></li>
|
||
<li class="- topic/li li" data-ofbid="d160198e65__20250123155216"><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="d160198e70__20250123155216">
|
||
<p class="- topic/p p" data-ofbid="d160198e72__20250123155216">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="d160198e76__20250123155216">
|
||
<p class="- topic/p p" data-ofbid="d160198e78__20250123155216">DVP 模块的测试 demo：test_dvp</p>
|
||
</li>
|
||
</ul></li>
|
||
</ul>
|
||
</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>
|
||
|
||
<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="d160198e94__20250123155216">测试中需要用到摄像头，以 OV5640 为例，在
|
||
Luban 的根目录下通过 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">make
|
||
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"><code>Linux
|
||
Device Drivers
|
||
Multimedia support
|
||
Media ancillary drivers
|
||
Camera sensor devices
|
||
<*> OmniVision OV5640 sensor support
|
||
</code></pre></div><div class="- topic/p p" data-ofbid="d160198e101__20250123155216">在 <span class="+ topic/ph sw-d/filepath ph filepath">board.dts</span> 中，也需要增加
|
||
OV5640 的配置，假设 OV5640 是接在 I2C3
|
||
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"><code>&i2c3 {
|
||
pinctrl-names = <span class="hl-string">"default"</span>;
|
||
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>
|
||
status = <span class="hl-string">"okay"</span>;
|
||
|
||
ov5640: camera@<span class="hl-number">3</span>C {
|
||
compatible = <span class="hl-string">"ovti,ov5640"</span>;
|
||
reg = <<span class="hl-number">0x3C</span>>;
|
||
clocks = <&cmu CLK_APB1>;
|
||
clock-names = <span class="hl-string">"xclk"</span>;
|
||
reset-gpios = <&gpio_p <span class="hl-number">5</span> GPIO_ACTIVE_LOW>;
|
||
powerdown-gpios = <&gpio_p <span class="hl-number">6</span> GPIO_ACTIVE_HIGH>;
|
||
|
||
port {
|
||
ov5640_out: endpoint {
|
||
remote-endpoint = <&dvp0_in>;
|
||
<em class="hl-comment">/* V4L2_FWNODE_BUS_TYPE_BT656
|
||
bus-type = <6>; */</em>
|
||
bus-width = <<span class="hl-number">8</span>>;
|
||
data-shift = <<span class="hl-number">2</span>>;
|
||
hsync-active = <<span class="hl-number">0</span>>;
|
||
vsync-active = <<span class="hl-number">1</span>>;
|
||
pclk-sample = <<span class="hl-number">1</span>>;
|
||
};
|
||
};
|
||
};
|
||
};</code></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> <div class="note__body">
|
||
<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="d160198e112__20250123155216">
|
||
<p class="- topic/p p" data-ofbid="d160198e114__20250123155216">如果要使用 BT656 模式，请打开 bus-type 参数。</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d160198e118__20250123155216">
|
||
<p class="- topic/p p" data-ofbid="d160198e120__20250123155216">如果是 YUV422，不需要配置 bus-type，代码中默认采用 YUV422（即
|
||
V4L2_FWNODE_BUS_TYPE_PARALLEL，定义在
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">drivers/media/v4l2-core/v4l2-fwnode.c</span>）。</p>
|
||
</li>
|
||
</ol>
|
||
</div></div></div></li>
|
||
<li class="- topic/li li" data-ofbid="d160198e129__20250123155216">test_dvp 配置<p class="- topic/p p" data-ofbid="d160198e131__20250123155216">在 <span class="- topic/ph ph">Luban</span> 根目录，运行<span class="- topic/ph ph">make linux-menuconfig</span>，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"><code>ArtInChip packages
|
||
Sample code
|
||
[*] test-dvp
|
||
</code></pre></li>
|
||
</ol>
|
||
</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>
|
||
|
||
<p class="- topic/p p" data-ofbid="d160198e149__20250123155216">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>
|
||
<div class="- topic/p p" data-ofbid="d160198e152__20250123155216">在打开 test_dvp 的编译后，<span class="- topic/ph ph">板子上的 test_dvp 位于
|
||
<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
|
||
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"><code>test_dvp -u</code></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"><code>Usage: test_dvp [options]:
|
||
-f, --format format of input video, NV12/NV16 etc
|
||
-c, --count the number of capture frame
|
||
-w, --width the width of sensor
|
||
-h, --height the height of sensor
|
||
-r, --framerate the framerate of sensor
|
||
-u, --usage
|
||
-v, --verbose
|
||
|
||
Example: test_dvp -f nv16 -c <span class="hl-number">1</span>
|
||
</code></pre></div>
|
||
<div class="- topic/p p" data-ofbid="d160198e165__20250123155216">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
|
||
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"><code>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></code></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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