@oleg
This link provides a reference for workarounds to this problem.
Camera menu appears on VEYE-MIPI-IMX327S

However, I'm curious why this issue occurs so frequently on your end. Could you please measure the SCL level using an oscilloscope? When the VEYE module is not configured, SCL should always remain high. If there are frequent and continuous level changes, it indicates that the system is operating on the I2C bus.

430b65cc-ea10-47f9-ae2a-42c02f3119eb-bddd9a7161c7e66c0648f1da3766162.png

@egor Sorry, I think the accurate way to do this now is still through an external sensor like a photocell.

@carrot said in Can't select 25Hz framerate on MIPI IMX462:

Please try this:

sudo ./veye_mipi_i2c.sh -w -f videoformat -p1 PAL -b 9 gst-launch-1.0 nvv4l2camerasrc device=/dev/video0 ! "video/x-raw(memory:NVMM),format=(string)UYVY,width=(int)1920,height=(int)1080" ! nvvidconv ! "video/x-raw(memory:NVMM),format=(string)I420" ! fpsdisplaysink video-sink=fakesink -v

@veye_xumm 请问FPGA和RK3588直连，没有I2C，怎么在设备树里添加相机？相机驱动又该怎样处理？

@nb 您好，我遇到了类似的问题，请问一下您的解决方案就是将4.6的opencv更换成4.2的opencv吗？

@veye_xumm 感谢感谢，谢谢楼主指点

@etherealhorizon
使用mv_mipi_i2c.sh脚本，只是直接写入了摄像头寄存器，配置了摄像头的数据格式，但是v4l2驱动中并未得到通知。建议你采用v4l2-ctl配置相机关于相机分辨率，帧率，数据格式的参数。
比如用下面这个脚本测测看。

export WIDTH=704 export HEIGHT=544 export FPS=319 v4l2-ctl --set-ctrl roi_x=0 v4l2-ctl --set-ctrl roi_y=0 v4l2-ctl --set-fmt-video=width=$WIDTH,height=$HEIGHT,pixelformat=XY12 v4l2-ctl --set-ctrl frame_rate=$FPS v4l2-ctl --set-fmt-video=width=$WIDTH,height=$HEIGHT,pixelformat=XY12 --stream-mmap --stream-count=1000 -d /dev/video0 --verbose --stream-to=test1.raw

@dan
Please try this image.

export I2C_BUS=7 export WIDTH=1280 export HEIGHT=1024 export FPS=108 media-ctl -d /dev/media0 --set-v4l2 '"m00_b_mvcam '"$I2C_BUS"'-003b":0[fmt:Y8_1X8/'"$WIDTH"'x'"$HEIGHT"'@1/'"$FPS"']' v4l2-ctl -d /dev/video0 --set-fmt-video=width=$WIDTH,height=$HEIGHT,pixelformat=GREY --stream-mmap --stream-count=-1 --stream-to=/dev/null

93427bda-d9b6-4263-be24-30aac77b3df5-image.png

@lin 应该还是设备树配置的问题。

@sqf121
这个问题已经解决，请参考一下github上的更新。
https://github.com/veyeimaging/raspberrypi_v4l2

@lnlinh said in CS-MIPI-IMX307 hardware trigger:

streammode

Sorry, CS-MIPI-IMX307 does not support external trigger mode, only free running and sync mode.

@w88121446 我们用的firefly的板子，gstreamer是支持gray8数据格式的。

@lin 你好，现在我们并没有使用rk3588内部的isp的经验。不好意思。

@newleaf
Looking at the image you sent, I do think it's an IR cut issue.
Could you tell me which aespeed-related command you used to reproduce this phenomenon?

@etherealhorizon

@etherealhorizon said in IMX 287 opencv python多线程多相机硬触发帧率下降:

最后是用python多进程为每个相机分别subprocess运行v4l2-ctl命令行然后读取--stream-mmap --verbose的时间戳

这个时间戳不够准确，如果你的算法对事件准确性要求不高，也可以先这样用。

@etherealhorizon said in IMX 287 opencv python多线程多相机硬触发帧率下降:

还想请教一下怎么做real time binning，就是实时地将2x2或者4x4的像素值求和再保存，我们的c水平比较烂哈哈。

这个我们也缺乏实际经验。不好意思。

@lin 不客气。

@veye_xumm 解决了,dphy4不支持4lane

客户已解决。是kernel配置中关于rkcif的配置原因。