On 03/20/2015 10:27 AM, Terry Moore wrote:
Your device can’t NAK setup packets; that’s not defined behavior in the USB spec. Your device can either ACK (in which case the host begins the data or status phase, as appropriate) or be completely silent.
Aren't you supposed to stall endpoint 0 if you can't respond with ACK? That's different being being completely silent, right?
I mean, in general for control transfers. I'm pretty sure CDC ACM protocol requires a non-stall response on SET_LINE_CODING.
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