Connecting PWM1 -> RC0
Dan Michaels email (remove spam text)
>Dan Michaels writes:
> > Rodrigo Real wrote:
> > It is not clear what the problem is here. What does +/-300hz
> > signal mean?
> It means the frequency is around 300Hz (it is not changing, if that's what
you are thinking), I expect it were 20KHz, just like the PWM frequency.
If you simply write a loop to poll RC1 [or RC0/RB0 when using
external connections - as you indicated you have already done],
then you should see the 20khz PWM signal on your portB pin.
1 - check that PWM is actually coming out of RC1. This is PWM
channel **2**, BTW.
2 - maybe you programmed PWM ch#1 instead --> comes out RC2.
3 - simple loop should do it, without any external connections.
L1 btfss portc,1 ; PWM ch#2 output bit
bcf portb,2 ; signal out
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