Using the 'Radio' service to connect micro:bit to micro:bit
https://forum.makecode.com/t/microbit-ignoring-radio-message-when-in-while-loop/5100/2
Behind the MakeCode Hardware - Radio in micro:bit
Mar 22
https://forum.makecode.com/t/microbit-ignoring-radio-message-when-in-while-loop/5100/2