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AN75779 CyU3PDmaMultiChannelSetWrapUp() Problem | Cypress Semiconductor

AN75779 CyU3PDmaMultiChannelSetWrapUp() Problem

Summary: 2 Replies, Latest post by ss liang on 20 May 2013 10:06 PM PDT
Verified Answers: 0
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cykwon's picture
1 post

 I used AN75779(How to Implement an Image Sensor Interface with EZ-USB® FX3™ in a USB) Source.

CyU3PDmaMultiChannelSetWrapUp() function is succeed. But Sometimes CyFxUvcApplnDmaCallback() isn't called.

So losing about 2 frame per second, 28 frame appears.

Please help me.


shah's picture
Cypress Employee
9 posts

 please look for the updates under #define check_last_buffer. See if this helps.




ss liang's picture
1 post

Hi shah 

I had the same error in my firmware"AN75779 CyU3PDmaMultiChannelSetWrapUp () Problem" error code 71.

But i can't find "# define check_last_buffer". could you tell me where i can find it.



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