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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/dvp/dvp_config_lite.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">参数配置</h1><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><div class="- topic/body body"><div class="- topic/p p" data-ofbid="d270029e19__20250121171739">按照以下流程打开相应的驱动模块：<ol class="- topic/ol ol" id="id__ol_u4z_jft_2dc" data-ofbid="id__ol_u4z_jft_2dc"><li class="- topic/li li" data-ofbid="d270029e22__20250121171739"><strong class="+ topic/ph hi-d/b ph b">打开 MPP VIN</strong><div class="- topic/p p" data-ofbid="d270029e25__20250121171739">在 <span class="- topic/ph ph">Luban-Lite</span> 根目录下执行 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">scons --menuconfig</span>，进入
|
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menuconfig 的功能配置界面，按如下选择：<div class="- topic/note note note note_note" id="id__note_qv3_52t_2dc" data-ofbid="id__note_qv3_52t_2dc"><span class="note__title">注：</span>
|
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<p class="- topic/p p" data-ofbid="d270029e35__20250121171739">DVP 驱动依赖 MPP 中的 VIN 子模块，所以需要提前打开。</p>
|
||
</div><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_anl_p2t_2dc" data-ofbid="id__codeblock_anl_p2t_2dc">Local packages options --->
|
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ArtInChip packages options --->
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[*] aic-mpp --->
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[*] Enable Video Input interface
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(<span class="hl-number">1843264</span>) Size of Video Input buffer</pre></div><p class="- topic/p p" data-ofbid="d270029e40__20250121171739">其中
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<span class="+ topic/keyword pr-d/parmname keyword parmname">Size of Video Input buffer</span> 需要根据实际的摄像头数据格式来计算。 以 YUV422
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格式、640*480 分辨率为例:</p><ol class="- topic/ol ol arabic simple" type="a" id="id__ol_jw1_l2t_2dc" data-ofbid="id__ol_jw1_l2t_2dc"><li class="- topic/li li" data-ofbid="d270029e46__20250121171739">
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<p class="- topic/p p" data-ofbid="d270029e48__20250121171739">需要申请的 Buf 大小为： 640*480*2*3=1843200 （计算方法详见 MPP VIN 模块中的 <a xml:lang="zh-CN" lang="zh-CN" class="- topic/xref xref" href="../mpp/mpp-vin-design-interface.html#mpp_vin_%E8%AE%BE%E8%AE%A1%E5%8F%8A%E6%8E%A5%E5%8F%A3%E8%AF%B4%E6%98%8E__section_znl_jf4_f1c">Buf 队列管理</a> ）</p>
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</li><li class="- topic/li li" data-ofbid="d270029e55__20250121171739">
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<p class="- topic/p p" data-ofbid="d270029e57__20250121171739">在 Buf 尾部多申请 64B，是为了满足 Cacheline 对齐的技术要求。</p>
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</li></ol></li><li class="- topic/li li" data-ofbid="d270029e60__20250121171739">
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<div class="- topic/div div section" id="id__dvp">
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<strong class="+ topic/ph hi-d/b ph b">打开 DVP</strong>
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||
<div class="- topic/p p" data-ofbid="d270029e67__20250121171739">在 <span class="- topic/ph ph">Luban-Lite</span> 根目录下执行 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">scons --menuconfig</span>，进入 menuconfig
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||
的功能配置界面，按如下选择：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_n13_q2t_2dc" data-ofbid="id__codeblock_n13_q2t_2dc">Board options --->
|
||
[*] Using DVP</pre></div></div>
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</li><li class="- topic/li li" id="id__li_wf4_qjt_2dc" data-ofbid="id__li_wf4_qjt_2dc">
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<div class="- topic/div div section" id="id__camera">
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||
<strong class="+ topic/ph hi-d/b ph b">打开 Camera</strong>
|
||
<div class="- topic/p p" data-ofbid="d270029e85__20250121171739">在 <span class="- topic/ph ph">Luban-Lite</span> 根目录下执行 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">scons --menuconfig</span>，进入
|
||
menuconfig 的功能配置界面完成配置，以连接到 I2C2 的 OV5640
|
||
为例，按如下选择：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_a53_r2t_2dc" data-ofbid="id__codeblock_a53_r2t_2dc">Board options --->
|
||
[*] Using i2c2
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||
Camera Support --->
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||
[*] Using camera device
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||
Select camera device (Using camera OV5640) --->
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||
(<span class="hl-number">2</span>) The No. of I2C channel
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||
(PE.<span class="hl-number">14</span>) The reset pin of Camera
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||
(PE.<span class="hl-number">15</span>) The power down pin of Camera</pre></div><div class="- topic/p p" data-ofbid="d270029e95__20250121171739">DVP
|
||
需要 Camera 一起配合，整个数据采集通路才是完整的。 Camera 外设的这些参数和板级电路相关：<ul class="- topic/ul ul simple" id="id__ul_kw1_l2t_2dc" data-ofbid="id__ul_kw1_l2t_2dc"><li class="- topic/li li" data-ofbid="d270029e98__20250121171739">
|
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<p class="- topic/p p" data-ofbid="d270029e100__20250121171739">连接到哪个 I2C 口</p>
|
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</li><li class="- topic/li li" data-ofbid="d270029e103__20250121171739">
|
||
<p class="- topic/p p" data-ofbid="d270029e105__20250121171739">Reset pin 使用的是哪个 IO</p>
|
||
</li><li class="- topic/li li" data-ofbid="d270029e108__20250121171739">
|
||
<p class="- topic/p p" data-ofbid="d270029e110__20250121171739">Powerdown pin 使用的是哪个 IO</p>
|
||
</li></ul></div></div>
|
||
</li><li class="- topic/li li" data-ofbid="d270029e114__20250121171739">
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||
<strong class="+ topic/ph hi-d/b ph b">打开 CLK_OUTx</strong>
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||
<div class="- topic/p p" data-ofbid="d270029e119__20250121171739">参考板级电路设计，在 menuconfig 中选择打开对应的
|
||
CLK_OUT：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="id__codeblock_swd_s2t_2dc" data-ofbid="id__codeblock_swd_s2t_2dc">Board options --->
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||
Clocks options --->
|
||
[ ] Enable CLK_OUT0
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||
[*] Enable CLK_OUT1
|
||
[ ] Enable CLK_OUT2
|
||
[ ] Enable CLK_OUT3</pre></div><p class="- topic/p p" data-ofbid="d270029e123__20250121171739">Camera 外设需要 SoC 提供一路 clock
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||
信号作为运行时的时钟源。由于 ArtInChip 产品支持的 clock 路数不同，具体应该用哪一路，取决于板级电路的设计。例如，D21x 和 D13x
|
||
都支持输出 4 路 clock，分别是 CLK_OUT0~CLK_OUT3。</p></li></ol></div></div></article></main></div>
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