PWM configuration to stop it after x number of pulses

[MarcosDNordic]

We need to work with the PWM, the idea is to set one frequency, duty 50%, and put out these pulses to one pin, we understand how to do that but we need to stop these pulses after a number x of pulses, one option we think connects it with the event to one-timer to count it and with an ISR stop it. However, we already are using two-timers and we try to avoid using another one.

Do you recommend another solution to stop the PWM or are we missing something?

Thanks

[Simon]

One option is to run the PWM from a function from main, a separate thread, or a work queue thread like this:

static void run_pwm(struct k_work *work){
    pwm_pin_set_usec(pwm, PIN, PERIOD, PULSE , 0);
    k_sleep(DURATION);
    //STOP PWM
}

You could also use the NRFX api and the function nrfx_pwm_simple_playback(). Check out this case for more information about this function: https://devzone.nordicsemi.com/f/nordic-q-a/73503/nrfx_pwm_simple_playback-on-nrf9160

If you change your mind about timers, this ticket may be useful: https://devzone.nordicsemi.com/f/nordic-q-a/74591/timers-in-nrf5340 

Best regards,

Simon