4 Replies Latest reply on Oct 12, 2017 8:37 PM by gotsc_2774976

FX3 UVC YUV422 / RAW Camera

userc_38555 Aug 18, 2017 12:54 PM

Hello everyone,

I'm trying to stream video from an Aptina-Camera with UVC to a PC. Using the FX3-Board and the USBVideoClass-Example (for RAW - Aptina MT9M114) I get no picture / video on PC.

Here my setup:

- Camera 10bit RAW or YUV422 (both doesn't work) with I2C connection to another device - so there is no need for sensor.c/sensor.h

- Camera 1280 x 960 30FPS

- AN75779 / FX3_RAWData_Cypress Driver and Descriptors.zip example

changes made:

uvc.c

uint8_t glProbeCtrl[CY_FX_UVC_MAX_PROBE_SETTING]

uint8_t glProbeCtrl20[CY_FX_UVC_MAX_PROBE_SETTING]

cyfxuvcdscr.c

/* Class specific Uncompressed VS Frame descriptor */

/* Class specific Uncompressed VS format descriptor */

-> set resolution, FPS and bitrate ...

I got often

Error in CyU3PDmaMultiChannelCommitBuffer: code 71

and the I made modification like in

//http://www.cypress.com/forum/usb-30-super-speed/an75779-modification-fx3-streaming-image-sensor-data

Then I got debug prints like ...

UVC: Completed 106 frames and 135 buffers

UVC: Completed 106 frames and 147 buffers

...

But no video at all

Are there any other changes I must made to get the cam working?

Thank You,

Regards Norman

1. Re: FX3 UVC YUV422 / RAW Camera

raghuramh_86 Jun 19, 2017 6:13 AM (in response to userc_38555)

Hi Norman,

If you are frequently getting error code:71, could you please implement the modifications mentioned in the following Knowledge Base Article:

http://www.cypress.com/knowledge-base-article/invalid-sequence-error-multi-channel-commit-buffer-kba218830



Regards,

Raghuram
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2. Re: FX3 UVC YUV422 / RAW Camera

userc_38555 Jun 19, 2017 9:19 PM (in response to userc_38555)

Hi Raghuram,

thank you for your answer. In my first post I didn't mention that I already made this modifications. It doesn't work too....



Regards, Norman
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3. Re: FX3 UVC YUV422 / RAW Camera

rahe_2687266 Aug 23, 2017 3:10 AM (in response to userc_38555)

Hi Norman,

Could you share the project with the modifications you have made.
Are you getting the debug print 'SUSPEND encountered...' ?
Which is the UVC Host Application you are using?
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4. Re: FX3 UVC YUV422 / RAW Camera

gotsc_2774976 Oct 12, 2017 8:37 PM (in response to userc_38555)

Hi Norman
if you can get debug message
UVC: Completed 106 frames and 135 buffers
with frame and buffer valid, in my case , if no image shows up
it most likely the width or height or frame size or frame rate incorrect
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