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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
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 >
< 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 --->
ArtInChip packages options --->
[*] aic-mpp --->
[*] Enable Video Input interface
(< span class = "hl-number" > 1843264< / span > ) Size of Video Input buffer< / pre > < / div > < p class = "- topic/p p" data-ofbid = "d270029e40__20250121171739" > 其中
< 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
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" >
< 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 >
< / li > < li class = "- topic/li li" data-ofbid = "d270029e55__20250121171739" >
< p class = "- topic/p p" data-ofbid = "d270029e57__20250121171739" > 在 Buf 尾部多申请 64B， < / p >
< / li > < / ol > < / li > < li class = "- topic/li li" data-ofbid = "d270029e60__20250121171739" >
< div class = "- topic/div div section" id = "id__dvp" >
< strong class = "+ topic/ph hi-d/b ph b" > 打开 DVP< / strong >
< 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
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 >
< / li > < li class = "- topic/li li" id = "id__li_wf4_qjt_2dc" data-ofbid = "id__li_wf4_qjt_2dc" >
< div class = "- topic/div div section" id = "id__camera" >
< 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
Camera Support --->
[*] Using camera device
Select camera device (Using camera OV5640) --->
(< span class = "hl-number" > 2< / span > ) The No. of I2C channel
(PE.< span class = "hl-number" > 14< / span > ) The reset pin of Camera
(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" >
< p class = "- topic/p p" data-ofbid = "d270029e100__20250121171739" > 连接到哪个 I2C 口< / p >
< / 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" >
< strong class = "+ topic/ph hi-d/b ph b" > 打开 CLK_OUTx< / strong >
< 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 --->
Clocks options --->
[ ] Enable CLK_OUT0
[*] 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
信号作为运行时的时钟源。由于 ArtInChip 产品支持的 clock 路数不同， ， ，
都支持输出 4 路 clock， < / p > < / li > < / ol > < / div > < / div > < / article > < / main > < / div >
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< / div >
< / footer >
< div id = "go2top" class = "d-print-none" >
< span class = "oxy-icon oxy-icon-up" > < / span >
< / div >
< div id = "modal_img_large" class = "modal" >
< span class = "close oxy-icon oxy-icon-remove" > < / span >
< div id = "modal_img_container" > < / div >
< div id = "caption" > < / div >
< / div >
< script src = "${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer = "defer" > < / script >
< / body >
2025-01-23 16:37:00 +08:00
< / html >
