How to program an Analogic output on pin 18

[PhilippeG]

Hello

I have seen in the various examples that most of the time the output are digital (0 or 1) . i program a PWM signal to make any DC output on the pin 18

but unfortunately, this occurs into a loop checking UART data coming. It is simple to let a pin at 0 or 1, but i need to constantly generate the PWM signal if something in between. if i write a while loop in this event handler, i cannot check if there is new data coming since my event handler is stuck doing the PWM. 

How is the best way to turn a pin as an analog output without condamning the event loop to detect if there is a BLE data coming to shut down this signal or modify its value?

Thanks

Philippe

[haakonsh]

You need a HW PWM, either use the PWM peripheral or make one with TIMER + PPI + GPIOTE. 

Search the devzone for implementation specifics. 

[PhilippeG]

Thanks I will check that. It seems like the event of a button changing the demo numbers in the pwm_driver example might be the closest of what i need to do. some PWM who can be changed by an event