RC Impossible Day!

Today I chose, unwisely to try and get Rust compiled and flashed onto the Arduino Uno R4, which has a Renesas RA4M1 (Arm Cortex-M4) chip. There is a rust hardware abstraction layer crate for this chip, as well as a compile target . I failed spectacularly, and the outcome of my efforts was the ability to get the Arduino into a boot loop. Hooray! I started with the cortex-m quickstart, which…