[billbo911]

Originally Posted by comphappy

Yes, I am aware of that, but in this case the PWM is being driven with out any user input, should be ether 0 or 255, nothing in the middle.

I'm not sure I am following what the question is. If you have a PWM value that is going to be only one of two states, 0 or 255, then just test for one state. For example:

if (pwm03 > 127)
    {
      accumulator ++;
    }
else
    {
     accumulator --;
    }

I chose 127 just for simplicity.

Just as easily, you could test for the actual value.

if (pwm03 == 255)
    {
      accumulator ++;
    }
else
    {
     accumulator --;
    }