Art, What would you use as a reference in that situation?
Dave Purola,
N8NTA
Art, What would you use as a reference in that situation?
Dave Purola,
N8NTA
If you have a PIC that supports Internal/External Oscillator Switchover then you shouldn't need a firmware solution to determine osc speed. You already know what it should be after you write to OSCCON & flip the System Clock Select bit.
If you have one running on the internal oscillator, and you need to calibrate it, then Microchip has a few app notes for this using TMR1 with an external 32.768kHz watch type crystal. Or you could just output the internal clock on OSC2/CLKO and test it with an O-scope.
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