Non-blocking UART transfer

[RAc]

@richard-damon

A second task sending doesn’t need to wait for the buffer to be empty, it can just add to the buffer, and will continue as long as it isn’t full.

A related discussion is here:

Issue with uart RX data when sharing with multiple tasks - Kernel - FreeRTOS Community Forums

Just out of curiosity, how does your architecture handle acknowledgements (ie serial reads that need to sync up with the transmissions), or does your protocol not need those? (warning, slightly off topic)