@NotSoMega​ Sorry for late reply, I was busy doing something else too. I'm using the USB controller in DMA mode, so my use-case is a bit different. I encountered the problem you described, but in somewhat bizzare form, where DMA sometimes skips the s...

@NotSoMega​ I'm currently trying to implement split transactions myself and what I found is that after setting COMPLSPLT bit you need to send the corresponding token again (in your case, Setup token) to actually generate the Complete Split token on t...