PIC16F877: PWM with less than 250Hz possible?

[PCM programmer]

I didn't actually write the inner loop code. Someone else on the
forum wrote that as a fragment. I incorporated it into a test program
just to be my helpful old self. But I'll try to explain it.

The 'loop' variable is initialized to 100 (Set in LOOPCNT).

The first if() statement decrements the loop counter once per pass.
It will decrement to 99, then 98, etc., down to 0 (after 100 interrupts).
When it goes to 0, the if() statement will reload the loop counter with
the initial value of 100.

I think there's a bug with the 'pulse' variable. It's not initialized.
One quick fix would be to initialize it to 0 in the static declaration:

[ckielstra]

[PCM programmer]

You're right, and I looked for that in the .LST file but I missed it.
It is there (with no explicit init of pulse in the code):

[Brian]

Everything is working now and makes sense.

Thanks!