16khz PWM

Lightfoot

Will this work for a 16khz PWM circuit (not sure if I have the math right).

62.5

'50% duty cycle: code is not accurate either

here:

ra.0 = 1
pauseus 31
ra.0 = 0
pauseus 31

goto here:

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JonnyMac

If you just want this to run in a loop you might try:

Main:
  DO
    TOGGLE RA.0
    PAUSEUS 31.2
  LOOP

When using PAUSEUS inline as above you can have fractional values -- that might get you a bit closer. And by using toggle the duty cycle should be dead-on 50% (your program will have a slightly longer off-time due to the jump after the second PAUSEUS).

Bean

Actually "RA.0 = ~RA.0" will execute much faster than "TOGGLE RA.0" since it doesn't set the pin to output everytime.

Bean.

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JonnyMac

Good point -- let me modify the [noparse][[/noparse]simple] listing:

Main:
  OUTPUT RA.0
  DO
    RA.0 = ~RA.0
    PAUSEUS 31.2        ' <-- fine tune to adjust frequency
  LOOP