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Read time: 2 minute(s)
< / 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 >
< div class = "- topic/p p" data-ofbid = "d144696e27__20250121171610" >
< 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" >
< p class = "- topic/p p" data-ofbid = "d144696e36__20250121171610" > 开发板，或者 D211 的 FPGA 板< / p >
< / li > < li class = "- topic/li li" data-ofbid = "d144696e39__20250121171610" >
< p class = "- topic/p p" data-ofbid = "d144696e41__20250121171610" > 可转接摄像头的子板< / p >
< / li > < li class = "- topic/li li" data-ofbid = "d144696e44__20250121171610" >
< p class = "- topic/p p" data-ofbid = "d144696e46__20250121171610" > 摄像头，如 OV5640< / p >
< / 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" >
< 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 >
< / li > < li class = "- topic/li li" data-ofbid = "d144696e58__20250121171610" >
< p class = "- topic/p p" data-ofbid = "d144696e60__20250121171610" > DVP 模块的测试 demo： < / 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 = "d144696e72__20250121171610" > 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" > Linux
Device Drivers
Multimedia support
Media ancillary drivers
Camera sensor devices
< *> OmniVision OV5640 sensor support
< / 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
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" > & 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 > > ;
};
};
};
};< / 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 >
< 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" >
< 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 >
< / li > < li class = "- topic/li li" data-ofbid = "d144696e94__20250121171610" >
< p class = "- topic/p p" data-ofbid = "d144696e96__20250121171610" > 如果是 YUV422， ， （
V4L2_FWNODE_BUS_TYPE_PARALLEL，
< span class = "+ topic/ph sw-d/filepath ph filepath" > drivers/media/v4l2-core/v4l2-fwnode.c< / span > ）。< / p >
< / li > < / ol >
< / 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
Sample code
[*] test-dvp
< / 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 = "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 >
< 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
< 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" > 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]:
-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 >
< / pre > < / div >
< div class = "- topic/p p" data-ofbid = "d144696e134__20250121171610" > 示例：设置摄像头的分辨率为 720*576， ，
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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