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android-rpi / device_arpi_rpi4

Device build-config for Raspberry Pi 4
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I can't find video0 under /dev #17

Closed Midysen closed 4 years ago

Midysen commented 4 years ago

I have successfully built device_arpi_rpi4 from source code by following instructions as mentioned in - https://github.com/android-rpi/device_arpi_rpi4. I am using RPI4 version which has 4 GB of RAM. But,when I use USB camera, I can't find video0 under /dev. Anybody can tell me why?

jaeminkang2 commented 4 years ago

Hi That's my stupid question, ^^ When you use the usb camera, did you check the file creation? I think we need to check the file creation in log first.

Midysen commented 4 years ago 
[  485.514957] usb 1-1.1: New USB device found, idVendor=1bcf, idProduct=2283, bcdDevice= 0.05
[  485.523807] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[  485.531223] usb 1-1.1: Product: Aoni HD Camera
[  485.535796] usb 1-1.1: Manufacturer: Sunplus IT Co 
[  485.820950] usb 1-1.1: Warning! Unlikely big volume range (=4096), cval->res is probably wrong.
[  485.829869] usb 1-1.1: [5] FU [Mic Capture Volume] ch = 1, val = 0/4096/1

This is the dmesg that I can see ! I can't find the file be created about usb camera.

jaeminkang2 commented 4 years ago

Hi

I don't think that I can see it on dmsg. I meant logcat. But I don't know if the contents of file creation will be shown in log. And.. If you can't see it in logcat, i think that you can also check the location of the file to be created in adb shell. It just my thought. Good luck ^^

Midysen commented 4 years ago

I have solved this problem. Please confirm the kernel configuration of " USB Video Class (UVC)" is "*".

jaeminkang2 commented 4 years ago

Sorry. I don't know that much. I just talked about test content.

But I'm glad you solved it. Good luck. ^^