That was it. The HAL_Delay(5) was something I’d added while guessing, removing it and waiting on TC gives me all 9 bytes and the CRC checks out every time. No more echo either. Moving to idle line DMA next like Aoife suggested.
That was it. The HAL_Delay(5) was something I’d added while guessing, removing it and waiting on TC gives me all 9 bytes and the CRC checks out every time. No more echo either. Moving to idle line DMA next like Aoife suggested.