Scott Pierce wrote:

> Any help you could give me is greatly appreciated.


Hi Scott,

One problem I see in your code is:

  TXIF = 1;      //set Transmit interrupt flag

It appears that you have the understanding that setting this bit will
trigger an interrupt, but this will not work.
The TXIF bit is a read-only bit. Take a look at the PIC16F627 data sheet and
study up on the UART section -- this should give you a better feel for
things.

For now, replace the line of code above with:
  TXREG = Data;  //Send Data

Remove the following from your ISR:
  TXREG = Data;  //Send Data


Once you get back on track after reading the data sheet you might modify
your code as you see fit.

I hope this makes sense to you, if not chime on back with another question.


Best regards,

Ken Pergola

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