Since there is only 1 counter for each FTM module so 2 PWM channels in 1 FTM have same frequency in typical. This is the case we need full PWM capability channels. If we need only something like frequency generator, we can configure
counter with 100Hz frequency
channel 0 operates in Output Compare mode, toggle output on matching
channel 1 operates in normal PWM mode, dutycycle = 50%
Finally, software PWM can be used if frequency is low and pulse width is big enough. Channel should be configured in output compare mode. In matching ISR, Cv is recalculated and write again.