i.MX ProcessorsのトピックRe: mx6q usb camera

mx6q usb camera

mrleo — Mon, 30 Jun 2014 05:20:31 GMT

Hi all,

Usb camera Empia 2775 can suport in mx6q android 4.2.2?

How to support in mx6q android 4.2.2?

Thanks,

Leo

Re: mx6q usb camera

igorpadykov — Tue, 01 Jul 2014 06:00:13 GMT

Hi mrleo

yes, if this UVC camera, please check link below

"Hardware for SABRE AI: Front Camera: UVC camera".

https://community.freescale.com/docs/DOC-94798

Seems you can find on web how to add support to new usb camera to

Android, like below

http://www.infinitegra.co.jp/en/solution/AndroidUsbCam.htm

Best regards

chip

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Re: mx6q usb camera

mrleo — Tue, 01 Jul 2014 06:24:17 GMT

Hi chipexpert,

I configure the back camera for uvc in init.rc.

Now I use android camera app to test the camera,I can see the image,it will get the error.later image will stop.

<3>uvcvideo: Failed to resubmit video URB (-27).
<3>uvcvideo: Failed to resubmit video URB (-27).
<3>uvcvideo: Failed to resubmit video URB (-27).
<3>uvcvideo: Failed to resubmit video URB (-27).
<3>uvcvideo: Failed to resubmit video URB (-27).

Thanks,

Leo

Re: mx6q usb camera

igorpadykov — Tue, 01 Jul 2014 06:47:15 GMT

Hi mrleo

This could be because the driver fell behind the real-time stream and wasn't

able to keep up.

Try to reduce frame rate or resolution.

Best regards

chip

Re: mx6q usb camera

mrleo — Tue, 01 Jul 2014 13:57:48 GMT

Hi chipexpert,

I found my camera capture image all is Purple. Default the camera Preview is 640x480 ,ps is 15.But preview images are not normal, the flower screen and changing.

I change preview fps is 1fps or 4fps or 25fps or 30fps is not resolve preview image.

I found my custom usb camera have feature have support still image capture,but uvc is not support this feature.

Also I use c170 camera is ok for my mx6q board,But my custom usb camera is not ok for me.

What 's the probelm for my custom usb camera? Is it can not support in mx6q android4.2.2 system or linux uvc? Have you can give me some advices?

Thanks,

Leo

Re: mx6q usb camera

XiaoPong — Mon, 15 Sep 2014 06:04:47 GMT

Hi, Leo,

Have you got answer yet? What is max resolution that your USB camera supports? I bet it is not only VGA.

Re: mx6q usb camera

igorpadykov — Mon, 15 Sep 2014 10:32:40 GMT

He Leo

please check below

https://github.com/rabeeh/android-imx6-kitkat/blob/master/platform/external/linux-test.git/0433-ENGR00291326-mx6-Add-USB-camera-unit-test.patch

~igor