RE: NRF52 clear UART FIFO

Christopher — Wed, 06 Apr 2016 17:29:27 GMT

The FIFO implementation documentation is available in the "SDK common libraries" section, see this link.

You can use the app_fifo_flush function to equals the FIFO read and write pointers and "invalidate" the data stored in the FIFO.

To avoid FIFO overflow and to not lost bytes sent over UART, you could use Hardware Flow Control to stop the UART stream until you have processed the data available in the FIFO.