I'm not sure. Because of channel 2 is disabled it should not be signal on PA20?
In order to rapair this I should change this
PWM-> PWM_ENA = PWM_ENA_CHID3;
to PWM-> PWM_ENA | = PWM_ENA_CHID3; ?
Why there are inverted?
I wanted to do 2 non-inverted,Independent channels on PA20 and PC9.