mlaz commented on issue #955: pwm enabled? URL: https://github.com/apache/mynewt-core/issues/955#issuecomment-381155913 > What happen when: > > cycles are finished: is the pwm just stopped, is it disabled, unconfigured ? Should be configured but disabled. > a call to pwm_enable is made, what are the consequences on the cycle counter? (in normal thread, in seq_end_handler, in cycle_handler) If seq_end_handler is set it should be fired whenever the PWM stops (regardless it is playing for a given number of cycles or in loop (i.e. n_cycles = 0)). If cycle_handler is set it is fired every cycle (so, yes be careful when using it on high freq). > Is it possible to call pwm_set_frequency, after pwm_chan_config, pwm_enable? > (what will be the consquences?) It should be, the PWM should restart automatically on the new freq. > Is it possible to know the cycle couter value in pwm_cycle_handler? No (not right now), you would have to use am external variable. This sounds like an interesting improvement although would compromise the generality of the handler [prototype](https://github.com/apache/mynewt-core/blob/8ac604d63ac004ad18734c19dc34dbcb36a6772d/hw/drivers/pwm/include/pwm/pwm.h#L112).
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