I'm interfacing the TMC2209 using the UART peripheral. It's a simple single wire half-duplex protocol.It's also a command-reply protocol, so collisions won't be an issue. I have it working using separate TX and RX pins. The two pins are connected with a resistor and the RX side is connected to the d...

> Am strongly suspecting that, when using the RMT system in loop rather than in one-shot mode; it either ignores, or gets confused by the sentinels; and mis-counts during the final ticks in the final block. IMHO what happens is that the sentinel itself counts as a single event. So for the double-buf...