USB camera hanging in DM8168EVM

Srikanth Babu Jasty

Hi,

I am using the TI gingerbread-2.3-Devkit-2.0 for my DM8168 EVM board. I am trying to bringup the USB camera on this board.

By setting the flag 'USE_CAMERA_STUB=false' I was able to open the usb camera (Microsoft UVC camera) and get preview in the camera application. But, the preview is hanging after 5-20 seconds. When I kept some logs, I have observed that the code is not returning from the following call in V4L2Camera::GrabRawFrame

ioctl(camHandle, VIDIOC_DQBUF, &videoIn->buf);

Can anyone point me if I am missing something that needs to be changed in the driver or the V4L2 kernel module to make the camera work properly.

Regards,

Srikanth Babu Jasty

over 13 years ago

0 Vishveshwar Bhat over 13 years ago

TI__Genius 10210 points

Hi,

Currently USB camera is not supported with the TI Android DevKit

Some members of our rowboat community have reported that they are able to get USB camera working. We suggest you post your query to the rowboat forum:
http://groups.google.com/group/rowboat

0 Srikanth Babu Jasty over 13 years ago in reply to Vishveshwar Bhat

Prodigy 20 points

Hi,

I have finally made the USB camera to work on the board.

The issue is, as far as I understand, over use of the USB bandwidth. That is the A8 is not able to process all the data being sent by the Camera. Due to this the camera is hanging.

When I reduce the image resolution to QVGA, I am able to make the camera work consistently without any artifacts and hangs.

Regards,

Srikanth Babu Jasty

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USB camera hanging in DM8168EVM