uart.in_waiting always zero for nrf #1391
Description
There appears to be a problem with the uart.in_wating property for the nrf port -- I have been trying to use it on Particle Argon board but it seems to always return zero even when there is definitely something in the UART receive buffer.
uart.readline() works and returns the data even though uart.in_waiting says 0 bytes
This function works properly on the ATMEL SAMD51 (feather m4 express) I am trying to use the same code on the particle argon board.