Problems using previewOpencv.py using the 4 Channel Multi Camera Adapter Board with the 12 MP RaspberryPi HQ Camera (IMX477)

Raspberry Pi Cameras
1
  1. Where did you get the camera module(s)?

Amazon

  1. Model number of the product(s)?

Arducam Multi Camera Adapter V 2.2 (UC-475 Rev. C) and Raspberry Pi High Quality Camera (IMX477 Sensor)

  1. What hardware/platform were you working on?

Raspberry Pi 4 Model B

  1. Instructions you have followed. (link/manual/etc.)
  1. Problems you were having?

When running previewOpencv.py no preview image is displayed. Instead the message “Error: write failed” is displayed. Displaying the camera image using the C++ version (multiCamOpenCV.cpp) works. The Multi Camera Board is connected properly to the Raspberry Pi and I have one camera connected to port A.

  1. The dmesg log from your hardware?

  2. Troubleshooting attempts you’ve made?

I have determined that line 39 in AdapterBoard.py (https://github.com/ArduCAM/RaspberryPi/blob/master/Multi_Camera_Adapter/Multi_Adapter_Board_4Channel/Multi_Camera_Adapter_V2.2_python/AdapterBoard.py) produces the error.

  1. What help do you need?
    Any hints on how to read images from the camera using Python would be highly appreciated.
2

Here is the dmesg output when trying to run previewOpencv.py. I have only one camera module connected to the Multi Camera Adapter Board ( Camera A)

[Mi Okt 6 10:14:19 2021] bcm2835-v4l2-0: Failed enabling camera, ret -2
[Mi Okt 6 10:14:19 2021] bcm2835-v4l2-0: Failed to enable camera
[Mi Okt 6 10:14:19 2021] ------------[ cut here ]------------
[Mi Okt 6 10:14:19 2021] WARNING: CPU: 1 PID: 989 at drivers/media/common/videobuf2/videobuf2-core.c:1548 vb2_start_streaming+0x108/0x178 [videobuf2_common]
[Mi Okt 6 10:14:19 2021] Modules linked in: cmac rfcomm bnep hci_uart btbcm bluetooth ecdh_generic ecc fuse squashfs 8021q garp stp llc brcmfmac brcmutil sha256_generic cfg80211 rfkill v3d gpu_sched vc4 raspberrypi_hwmon bcm2835_codec(C) i2c_mux_pinctrl i2c_mux v4l2_mem2mem bcm2835_isp(C) videobuf2_dma_contig bcm2835_v4l2(C) cec bcm2835_mmal_vchiq(C) videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common drm_kms_helper videodev mc vc_sm_cma(C) snd_bcm2835(C) i2c_bcm2835 drm drm_panel_orientation_quirks snd_soc_core rpivid_mem snd_compress snd_pcm_dmaengine snd_pcm snd_timer snd syscopyarea sysfillrect sysimgblt nvmem_rmem fb_sys_fops backlight uio_pdrv_genirq uio i2c_dev ip_tables x_tables ipv6
[Mi Okt 6 10:14:19 2021] CPU: 1 PID: 989 Comm: python Tainted: G C 5.10.63-v7l+ #1457
[Mi Okt 6 10:14:19 2021] Hardware name: BCM2711
[Mi Okt 6 10:14:19 2021] Backtrace:
[Mi Okt 6 10:14:19 2021] [] (dump_backtrace) from [] (show_stack+0x20/0x24)
[Mi Okt 6 10:14:19 2021] r7:ffffffff r6:00000000 r5:60000013 r4:c12e6b3c
[Mi Okt 6 10:14:19 2021] [] (show_stack) from [] (dump_stack+0xcc/0xf8)
[Mi Okt 6 10:14:19 2021] [] (dump_stack) from [] (__warn+0xfc/0x114)
[Mi Okt 6 10:14:19 2021] r10:bf2ff218 r9:00000009 r8:bf22a1ec r7:0000060c r6:00000009 r5:bf22a1ec
[Mi Okt 6 10:14:19 2021] r4:bf22ef90 r3:c1205094
[Mi Okt 6 10:14:19 2021] [] (__warn) from [] (warn_slowpath_fmt+0x70/0xd8)
[Mi Okt 6 10:14:19 2021] r7:0000060c r6:bf22ef90 r5:c1205048 r4:00000000
[Mi Okt 6 10:14:19 2021] [] (warn_slowpath_fmt) from [] (vb2_start_streaming+0x108/0x178 [videobuf2_common])
[Mi Okt 6 10:14:19 2021] r9:bf250068 r8:c32d2b98 r7:00000001 r6:c32d2d40 r5:c32d2e40 r4:ffffffea
[Mi Okt 6 10:14:19 2021] [] (vb2_start_streaming [videobuf2_common]) from [] (vb2_core_streamon+0x90/0x180 [videobuf2_common])
[Mi Okt 6 10:14:19 2021] r7:00000001 r6:c1205048 r5:c2e08180 r4:c32d2d40
[Mi Okt 6 10:14:19 2021] [] (vb2_core_streamon [videobuf2_common]) from [] (vb2_streamon+0x24/0x64 [videobuf2_v4l2])
[Mi Okt 6 10:14:19 2021] r5:c2e08180 r4:00000001
[Mi Okt 6 10:14:19 2021] [] (vb2_streamon [videobuf2_v4l2]) from [] (vb2_ioctl_streamon+0x4c/0x50 [videobuf2_v4l2])
[Mi Okt 6 10:14:19 2021] [] (vb2_ioctl_streamon [videobuf2_v4l2]) from [] (v4l_streamon+0x2c/0x30 [videodev])
[Mi Okt 6 10:14:19 2021] r5:40045612 r4:bf2e6084
[Mi Okt 6 10:14:19 2021] [] (v4l_streamon [videodev]) from [] (__video_do_ioctl+0x234/0x460 [videodev])
[Mi Okt 6 10:14:19 2021] r5:40045612 r4:c32d2858
[Mi Okt 6 10:14:19 2021] [] (__video_do_ioctl [videodev]) from [] (video_usercopy+0x138/0x5f0 [videodev])
[Mi Okt 6 10:14:19 2021] r10:00000000 r9:c546fe3c r8:00000000 r7:c1205048 r6:00000000 r5:40045612
[Mi Okt 6 10:14:19 2021] r4:40045612
[Mi Okt 6 10:14:19 2021] [] (video_usercopy [videodev]) from [] (video_ioctl2+0x20/0x24 [videodev])
[Mi Okt 6 10:14:19 2021] r10:00000003 r9:c546e000 r8:00000000 r7:c2e08180 r6:c2e08180 r5:c1205048
[Mi Okt 6 10:14:19 2021] r4:bf255ff0
[Mi Okt 6 10:14:19 2021] [] (video_ioctl2 [videodev]) from [] (v4l2_ioctl+0x4c/0x60 [videodev])
[Mi Okt 6 10:14:19 2021] [] (v4l2_ioctl [videodev]) from [] (sys_ioctl+0x1d4/0x8ec)
[Mi Okt 6 10:14:19 2021] r5:c1205048 r4:40045612
[Mi Okt 6 10:14:19 2021] [] (sys_ioctl) from [] (ret_fast_syscall+0x0/0x28)
[Mi Okt 6 10:14:19 2021] Exception stack(0xc546ffa8 to 0xc546fff0)
[Mi Okt 6 10:14:19 2021] ffa0: b6f1f010 01819ea8 00000003 40045612 0181a448 00000000
[Mi Okt 6 10:14:19 2021] ffc0: b6f1f010 01819ea8 00000000 00000036 0155b628 c044560f b6539000 beda7a78
[Mi Okt 6 10:14:19 2021] ffe0: b6539bf0 beda75a4 b5d41a98 b6cba50c
[Mi Okt 6 10:14:19 2021] r10:00000036 r9:c546e000 r8:c0200204 r7:00000036 r6:00000000 r5:01819ea8
[Mi Okt 6 10:14:19 2021] r4:b6f1f010
[Mi Okt 6 10:14:19 2021] —[ end trace 4cc37ef73f243be9 ]—
[Mi Okt 6 10:14:20 2021] i2c-bcm2835 fe205000.i2c: i2c transfer timed out
[Mi Okt 6 10:14:21 2021] bcm2835-v4l2-0: Failed enabling camera, ret -2
[Mi Okt 6 10:14:21 2021] bcm2835-v4l2-0: Failed to enable camera
[Mi Okt 6 10:14:21 2021] ------------[ cut here ]------------
[Mi Okt 6 10:14:21 2021] WARNING: CPU: 1 PID: 989 at drivers/media/common/videobuf2/videobuf2-core.c:1548 vb2_start_streaming+0x108/0x178 [videobuf2_common]
[Mi Okt 6 10:14:21 2021] Modules linked in: cmac rfcomm bnep hci_uart btbcm bluetooth ecdh_generic ecc fuse squashfs 8021q garp stp llc brcmfmac brcmutil sha256_generic cfg80211 rfkill v3d gpu_sched vc4 raspberrypi_hwmon bcm2835_codec(C) i2c_mux_pinctrl i2c_mux v4l2_mem2mem bcm2835_isp(C) videobuf2_dma_contig bcm2835_v4l2(C) cec bcm2835_mmal_vchiq(C) videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common drm_kms_helper videodev mc vc_sm_cma(C) snd_bcm2835(C) i2c_bcm2835 drm drm_panel_orientation_quirks snd_soc_core rpivid_mem snd_compress snd_pcm_dmaengine snd_pcm snd_timer snd syscopyarea sysfillrect sysimgblt nvmem_rmem fb_sys_fops backlight uio_pdrv_genirq uio i2c_dev ip_tables x_tables ipv6
[Mi Okt 6 10:14:21 2021] CPU: 1 PID: 989 Comm: python Tainted: G WC 5.10.63-v7l+ #1457
[Mi Okt 6 10:14:21 2021] Hardware name: BCM2711
[Mi Okt 6 10:14:21 2021] Backtrace:
[Mi Okt 6 10:14:21 2021] [] (dump_backtrace) from [] (show_stack+0x20/0x24)
[Mi Okt 6 10:14:21 2021] r7:ffffffff r6:00000000 r5:60000013 r4:c12e6b3c
[Mi Okt 6 10:14:21 2021] [] (show_stack) from [] (dump_stack+0xcc/0xf8)
[Mi Okt 6 10:14:21 2021] [] (dump_stack) from [] (__warn+0xfc/0x114)
[Mi Okt 6 10:14:21 2021] r10:bf2ff218 r9:00000009 r8:bf22a1ec r7:0000060c r6:00000009 r5:bf22a1ec
[Mi Okt 6 10:14:21 2021] r4:bf22ef90 r3:c1205094
[Mi Okt 6 10:14:21 2021] [] (__warn) from [] (warn_slowpath_fmt+0x70/0xd8)
[Mi Okt 6 10:14:21 2021] r7:0000060c r6:bf22ef90 r5:c1205048 r4:00000000
[Mi Okt 6 10:14:21 2021] [] (warn_slowpath_fmt) from [] (vb2_start_streaming+0x108/0x178 [videobuf2_common])
[Mi Okt 6 10:14:21 2021] r9:bf250068 r8:c32d2b98 r7:00000001 r6:c32d2d40 r5:c32d2e40 r4:ffffffea
[Mi Okt 6 10:14:21 2021] [] (vb2_start_streaming [videobuf2_common]) from [] (vb2_core_streamon+0x90/0x180 [videobuf2_common])
[Mi Okt 6 10:14:21 2021] r7:00000001 r6:c1205048 r5:c2e08180 r4:c32d2d40
[Mi Okt 6 10:14:21 2021] [] (vb2_core_streamon [videobuf2_common]) from [] (vb2_streamon+0x24/0x64 [videobuf2_v4l2])
[Mi Okt 6 10:14:21 2021] r5:c2e08180 r4:00000001
[Mi Okt 6 10:14:21 2021] [] (vb2_streamon [videobuf2_v4l2]) from [] (vb2_ioctl_streamon+0x4c/0x50 [videobuf2_v4l2])
[Mi Okt 6 10:14:21 2021] [] (vb2_ioctl_streamon [videobuf2_v4l2]) from [] (v4l_streamon+0x2c/0x30 [videodev])
[Mi Okt 6 10:14:21 2021] r5:40045612 r4:bf2e6084
[Mi Okt 6 10:14:21 2021] [] (v4l_streamon [videodev]) from [] (__video_do_ioctl+0x234/0x460 [videodev])
[Mi Okt 6 10:14:21 2021] r5:40045612 r4:c32d2858
[Mi Okt 6 10:14:21 2021] [] (__video_do_ioctl [videodev]) from [] (video_usercopy+0x138/0x5f0 [videodev])
[Mi Okt 6 10:14:21 2021] r10:00000000 r9:c546fe3c r8:00000000 r7:c1205048 r6:00000000 r5:40045612
[Mi Okt 6 10:14:21 2021] r4:40045612
[Mi Okt 6 10:14:21 2021] [] (video_usercopy [videodev]) from [] (video_ioctl2+0x20/0x24 [videodev])
[Mi Okt 6 10:14:21 2021] r10:00000003 r9:c546e000 r8:00000000 r7:c2e08180 r6:c2e08180 r5:c1205048
[Mi Okt 6 10:14:21 2021] r4:bf255ff0
[Mi Okt 6 10:14:21 2021] [] (video_ioctl2 [videodev]) from [] (v4l2_ioctl+0x4c/0x60 [videodev])
[Mi Okt 6 10:14:21 2021] [] (v4l2_ioctl [videodev]) from [] (sys_ioctl+0x1d4/0x8ec)
[Mi Okt 6 10:14:21 2021] r5:c1205048 r4:40045612
[Mi Okt 6 10:14:21 2021] [] (sys_ioctl) from [] (ret_fast_syscall+0x0/0x28)
[Mi Okt 6 10:14:21 2021] Exception stack(0xc546ffa8 to 0xc546fff0)
[Mi Okt 6 10:14:21 2021] ffa0: b6f1f010 01819ea8 00000003 40045612 0181a448 00000000
[Mi Okt 6 10:14:21 2021] ffc0: b6f1f010 01819ea8 00000000 00000036 0155b628 c044560f b6539000 beda7a78
[Mi Okt 6 10:14:21 2021] ffe0: b6539bf0 beda75a4 b5d41a98 b6cba50c
[Mi Okt 6 10:14:21 2021] r10:00000036 r9:c546e000 r8:c0200204 r7:00000036 r6:00000000 r5:01819ea8
[Mi Okt 6 10:14:21 2021] r4:b6f1f010
[Mi Okt 6 10:14:21 2021] —[ end trace 4cc37ef73f243bea ]—
[Mi Okt 6 10:14:22 2021] i2c-bcm2835 fe205000.i2c: i2c transfer timed out
[Mi Okt 6 10:14:23 2021] bcm2835-v4l2-0: Failed enabling camera, ret -2
[Mi Okt 6 10:14:23 2021] bcm2835-v4l2-0: Failed to enable camera
[Mi Okt 6 10:14:23 2021] ------------[ cut here ]------------
[Mi Okt 6 10:14:23 2021] WARNING: CPU: 1 PID: 989 at drivers/media/common/videobuf2/videobuf2-core.c:1548 vb2_start_streaming+0x108/0x178 [videobuf2_common]
[Mi Okt 6 10:14:23 2021] Modules linked in: cmac rfcomm bnep hci_uart btbcm bluetooth ecdh_generic ecc fuse squashfs 8021q garp stp llc brcmfmac brcmutil sha256_generic cfg80211 rfkill v3d gpu_sched vc4 raspberrypi_hwmon bcm2835_codec(C) i2c_mux_pinctrl i2c_mux v4l2_mem2mem bcm2835_isp(C) videobuf2_dma_contig bcm2835_v4l2(C) cec bcm2835_mmal_vchiq(C) videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common drm_kms_helper videodev mc vc_sm_cma(C) snd_bcm2835(C) i2c_bcm2835 drm drm_panel_orientation_quirks snd_soc_core rpivid_mem snd_compress snd_pcm_dmaengine snd_pcm snd_timer snd syscopyarea sysfillrect sysimgblt nvmem_rmem fb_sys_fops backlight uio_pdrv_genirq uio i2c_dev ip_tables x_tables ipv6
[Mi Okt 6 10:14:23 2021] CPU: 1 PID: 989 Comm: python Tainted: G WC 5.10.63-v7l+ #1457
[Mi Okt 6 10:14:23 2021] Hardware name: BCM2711
[Mi Okt 6 10:14:23 2021] Backtrace:
[Mi Okt 6 10:14:23 2021] [] (dump_backtrace) from [] (show_stack+0x20/0x24)
[Mi Okt 6 10:14:23 2021] r7:ffffffff r6:00000000 r5:60000013 r4:c12e6b3c
[Mi Okt 6 10:14:23 2021] [] (show_stack) from [] (dump_stack+0xcc/0xf8)
[Mi Okt 6 10:14:23 2021] [] (dump_stack) from [] (__warn+0xfc/0x114)
[Mi Okt 6 10:14:23 2021] r10:bf2ff218 r9:00000009 r8:bf22a1ec r7:0000060c r6:00000009 r5:bf22a1ec
[Mi Okt 6 10:14:23 2021] r4:bf22ef90 r3:c1205094
[Mi Okt 6 10:14:23 2021] [] (__warn) from [] (warn_slowpath_fmt+0x70/0xd8)
[Mi Okt 6 10:14:23 2021] r7:0000060c r6:bf22ef90 r5:c1205048 r4:00000000
[Mi Okt 6 10:14:23 2021] [] (warn_slowpath_fmt) from [] (vb2_start_streaming+0x108/0x178 [videobuf2_common])
[Mi Okt 6 10:14:23 2021] r9:bf250068 r8:c32d2b98 r7:00000001 r6:c32d2d40 r5:c32d2e40 r4:ffffffea
[Mi Okt 6 10:14:23 2021] [] (vb2_start_streaming [videobuf2_common]) from [] (vb2_core_streamon+0x90/0x180 [videobuf2_common])
[Mi Okt 6 10:14:23 2021] r7:00000001 r6:c1205048 r5:c2e08180 r4:c32d2d40
[Mi Okt 6 10:14:23 2021] [] (vb2_core_streamon [videobuf2_common]) from [] (vb2_streamon+0x24/0x64 [videobuf2_v4l2])
[Mi Okt 6 10:14:23 2021] r5:c2e08180 r4:00000001
[Mi Okt 6 10:14:23 2021] [] (vb2_streamon [videobuf2_v4l2]) from [] (vb2_ioctl_streamon+0x4c/0x50 [videobuf2_v4l2])
[Mi Okt 6 10:14:23 2021] [] (vb2_ioctl_streamon [videobuf2_v4l2]) from [] (v4l_streamon+0x2c/0x30 [videodev])
[Mi Okt 6 10:14:23 2021] r5:40045612 r4:bf2e6084
[Mi Okt 6 10:14:23 2021] [] (v4l_streamon [videodev]) from [] (__video_do_ioctl+0x234/0x460 [videodev])
[Mi Okt 6 10:14:23 2021] r5:40045612 r4:c32d2858
[Mi Okt 6 10:14:23 2021] [] (__video_do_ioctl [videodev]) from [] (video_usercopy+0x138/0x5f0 [videodev])
[Mi Okt 6 10:14:23 2021] r10:00000000 r9:c546fe3c r8:00000000 r7:c1205048 r6:00000000 r5:40045612
[Mi Okt 6 10:14:23 2021] r4:40045612
[Mi Okt 6 10:14:23 2021] [] (video_usercopy [videodev]) from [] (video_ioctl2+0x20/0x24 [videodev])
[Mi Okt 6 10:14:23 2021] r10:00000003 r9:c546e000 r8:00000000 r7:c2e08180 r6:c2e08180 r5:c1205048
[Mi Okt 6 10:14:23 2021] r4:bf255ff0
[Mi Okt 6 10:14:23 2021] [] (video_ioctl2 [videodev]) from [] (v4l2_ioctl+0x4c/0x60 [videodev])
[Mi Okt 6 10:14:23 2021] [] (v4l2_ioctl [videodev]) from [] (sys_ioctl+0x1d4/0x8ec)
[Mi Okt 6 10:14:23 2021] r5:c1205048 r4:40045612
[Mi Okt 6 10:14:23 2021] [] (sys_ioctl) from [] (ret_fast_syscall+0x0/0x28)
[Mi Okt 6 10:14:23 2021] Exception stack(0xc546ffa8 to 0xc546fff0)
[Mi Okt 6 10:14:23 2021] ffa0: b6f1f010 01819ea8 00000003 40045612 0181a448 00000000
[Mi Okt 6 10:14:23 2021] ffc0: b6f1f010 01819ea8 00000000 00000036 0155b628 c044560f b6539000 beda7a78
[Mi Okt 6 10:14:23 2021] ffe0: b6539bf0 beda75a4 b5d41a98 b6cba50c
[Mi Okt 6 10:14:23 2021] r10:00000036 r9:c546e000 r8:c0200204 r7:00000036 r6:00000000 r5:01819ea8
[Mi Okt 6 10:14:23 2021] r4:b6f1f010
[Mi Okt 6 10:14:23 2021] —[ end trace 4cc37ef73f243beb ]—

3

Hello, have you enabled I2C communication? Can you send me the connection diagram of the camera?

4

Yes I have enabled I2C communication. I have a Arducam Multi Camera Adapter Board V 2.2 connected to the Pi and two Raspberry Pi HQ cameras conncted to ports A and C of the adapter board (see attached image). The sample program written in C++ works fine with the setup. I am able to see live images of the two connected cams. However, when I try to use the same program written in Python, it fails at the I2C commands. I was able to capture still images by changing the y-flag of the command “i2cset” to 1:

i2c_cmd":"i2cset -y 1 0x70 0x00 0x04

for camera channel A. Nonetheless, I am switching to implementing my project in C++ since the switching of channels seems to be very slow using Python.

IMG_20211014_102115
IMG_20211014_1021151920×1440 180 KB

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