Stop PWM output after N steps

[harry_rostovtsev]

Posted on August 27, 2012 at 20:01

Is there a way to tell a TIMer on STM32 chips to do some number of steps and automatically stop after finished (and give an interrupt)?  I can do it now with a counter in the ISR but a few pulses slip out before I can shutdown the PWM output or the timer.

[barry]

Posted on October 22, 2015 at 04:02

I have this code running correctly for Timer 8 channel 1.  When I try to use this code for other channels on Timer 8, I run into problems.

Channel 2n  (complementary) does not work (i.e. no PWM output)

Channel 3 continually outputs pulses

All I have changed is the GPIO pin configuration

and I use OCxInit for each channel.

Does anyone know what else is channel dependent.  

Thanks