Messages in this thread | | | From | Minas Harutyunyan <> | Subject | Re: RPi4 DWC2 gadget doesn't copy data to a buffer in ep0 SETUP + DATA OUT transaction | Date | Thu, 11 Feb 2021 11:21:15 +0000 |
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Hi Ruslan,
On 2/1/2021 3:44 AM, Ruslan Bilovol wrote: > Hi Minas and other USB experts, > > I'm currently developing new features for UAC1/UAC2 audio gadgets > like Volume/Mute controls which use Control SETUP + DATA OUT > transactions through ep0. > > While it works fine on BeagleBone black board with MUSB UDC, > on Raspberry Pi 4 with DWC2 UDC there is an issue. > > I found that when DWC2 receives ep0 SETUP + DATA OUT transaction, > it doesn't copy data transferred from the host to EP0 in DATA OUT stage > to the usb_request->buf buffer. This buffer contains unchanged data from > previous transactions. >
Could you please send debug log with issue and usb trace.
Thanks, Minas
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