AN75779 and USB 2.0, not USB transfers happen | Cypress Semiconductor
AN75779 and USB 2.0, not USB transfers happen
I've seen other posts with this problem, but no solutions.
In AN75779 on FX3 with USB2.0, CyU3PDmaMultiChannelCommitBuffer() doesn't seem to do anything. CyFxUvcApplnDmaCallback never gets called, and you soon run out of DMA buffers, which then causes the next CyU3PDmaMultiChannelCommitBuffer() to fail with an error code 71
Here's what I see on the debug output:
Error in multichannelcommitbuffer: Code = 71, size = 3FF0, dmaDone 8, cons = 0