CrossRoads:
So you are saying this
& B11111000
is not clearing bits 2 & 1 prior to the ORing of bit 0 only?
If not, I don't understand the question either.
Thank you! To resume my question: I'm controlling two DC motors, in order to avoid humming, I'm manipulating the timer frequency (timer 2). For one motor it has to be set to 31372.55 Hz and 30.517 Hz for the other motor. If both are DC motors, aren't they supposed to stop humming using the same PWM frequency ?