How to use GPIO analog a uart?

[shark]

I'm use freeRTOS by the nrf52832.But it only 1 channel uart,I need to two channels uart。if analog uart by GPIO,need to  us delay.How to generate us delay？

[Nguyen Hoan Hoang]

try this https://github.com/IOsonata/IOsonata/blob/master/ARM/include/idelay.h

[shark]

I mean is GPIO analog a uart。if use “nop” delay，BLE function will be influnences，BLE will be disability。How to use timer analog uart in freeRTOS？

[Nguyen Hoan Hoang]

usec delay is too short to affect anything.  By the time you setup the timer for your delay, you already used up 100+ usec.  Timer delay is only useful for long delays in range of msec+.