@veye_xumm 由于时间太久了,客户没有进一步的反馈,我会把这个帖子标记为已解决.

@veye_xumm Ok

@vvxy
当然，327型号只支持1080p这个模式。
具体可以看我们wiki上的手册。

@fabricio-borges
This question has been asked for a long time and the status has not been updated. I will mark the status as solved, so you can follow up again if needed, or just open the question.

@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。

@jdx-jdx
是的。probe成功才会生成video节点。

@veye_xumm Okay. Anyway Thank you.

@veye_xumm 好的 谢谢 我再重新搞一下

@veye_xumm I was just looking at the i2c program. Call this resolved.

@lyj 我说的这个buffer不是camera里面的buffer，而是jetson主板上为了接收图像而创建的buffer。 不能设置为1，需要有一定的冗余才好。

@lin 应该还是设备树配置的问题。

@dufuwei 不好意思，我们这个无法绕过ISP模块。也不能提供完整的原理图。

@阿坎德 你好，有进一步的结果吗？

@veye_xumm 对的，所以我感觉很奇怪。 下面是我修改的install_driver.sh
echo "Add cma=128M to /boot/firmware/cmdline.txt "
echo "--------------------------------------"
sudo sed 's/cma=128M//g' -i /boot/firmware/cmdline.txt
sudo sed 's/[[:blank:]]*$//' -i /boot/firmware/cmdline.txt
sudo sed 's/$/& cma=128M/g' -i /boot/firmware/cmdline.txt
echo "Installing the $driver_name.ko driver"
echo "--------------------------------------"
sudo install -p -m 644 ./driver_bin/$(uname -r)/$driver_name.ko /lib/modules/$(uname -r)/kernel/drivers/media/i2c/
sudo install -p -m 644 ./driver_bin/$(uname -r)/$driver_name.dtbo /boot/firmware/overlays/
sudo /sbin/depmod -a $(uname -r)
echo "reboot now?(y/n):"

谢谢！

已私信。已私信。

@yongjin
I don't know what your current state of knowledge is. If you don't understand i2C, you don't understand fpdlink, you don't understand registers. I think you should first learn the basics and be able to understand the information and code we provide now, and then proceed to your next work.
Good luck.

With this fix it seems more reliable but it did crash again last night leaving a veye_raspistill Zombie. Short stack trace:-

Apr 11 23:31:21 allsky kernel: [22053.109872] WARNING: CPU: 3 PID: 20358 at drivers/firmware/raspberrypi.c:64 rpi_firmware_transaction+0xec/0x128
Apr 11 23:31:21 allsky kernel: [22053.109884] Firmware transaction timeout
Apr 11 23:31:21 allsky kernel: [22053.109895] Modules linked in: rpcsec_gss_krb5 8021q garp stp llc spidev brcmfmac brcmutil sha256_generic i2c_mux_pinctrl i2c_mux raspberrypi_hwmon cfg80211 rfkill bcm2835_codec(C) v4l2_mem2mem bcm2835_v4l2(C) bcm2835_isp(C) bcm2835_mmal_vchiq(C) videobuf2_vmalloc snd_bcm2835(C) videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_common snd_pcm snd_timer i2c_bcm2835 snd spi_bcm2835 videodev mc vc_sm_cma(C) uio_pdrv_genirq uio fixed i2c_dev ip_tables x_tables ipv6
Apr 11 23:31:21 allsky kernel: [22053.110362] CPU: 3 PID: 20358 Comm: kworker/3:0 Tainted: G C 5.10.17-v7+ #1403
Apr 11 23:31:21 allsky kernel: [22053.110369] Hardware name: BCM2835
Apr 11 23:31:21 allsky kernel: [22053.110386] Workqueue: events dbs_work_handler

@zjutony
a5a4e9a6-73d9-4791-be79-2b8d3929796d-image.png
c8d0ee25-5791-4830-baae-bb3c47232379-image.png
你好，我这边freerunning模式跑的，测试没问题。
要不你配置一下sysreset，让模组恢复下默认值，然后再测试试试？

@wqeeqweqwwccsd
你这种测试方法是极为模糊和不确切的。请参考我上一个帖子发给你的链接。

@veye_xumm ok