Quote Originally Posted by financecatalyst View Post
Hello Darrel, I tried adding "DEFINE OSCCAL_1K 1" once above the @_Config....statement and once below it, both cases my PIC went dead. Is it that any other statement goes along with this?
That means the OSCCAL value is gone.
Without the calibration's RETLW, using OSCCAL_1K creates an infinite loop.

And without the calibration, SERIN has a snowball's chance ...

You could try random OSCCAL values, you might get lucky.
Or, stick a crystal or resonator on it, and it should be able to SERIN.
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