Hello everyone,

            I'm looking to make a circuit that uses two analogue inputs to
drive a PWM.  I am trying to make the frequency of the output anywhere from
10 KHz to 250 KHz based on a potentiometer.  Also, the duty of the circuit
needs to have an approximate 10% duty, but needs to be able to vary, again,
based on a potentiometer.  I would like to use a 16F87x for this, and in
assembly (or if someone could help me find a decent compiler for some other
language, that would be simpler).  The 16F877 already has a hardware PWM,
and I plan to use that, but I'm confused on how to make variable frequency
and variable pulsewidth.



Any suggestions about where to start, or some example codes would be
helpful.

Thanks,

~Zack S.

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