pic18f4520 baud rate change to 115200

[mister_e]

With 16 MHz the best error Percentage you'll get will be -0.79% witch is usually fair enough.

This assume you're aware that you MUST use the 16 bit baudrate generator for that.

Now to set it in C... it's your problem In PicBasic Pro

DEFINE HSER_RCSTA 90h ' Enable serial port & continuous receive
DEFINE HSER_TXSTA 24h ' Enable transmit, BRGH = 1
DEFINE HSER_CLROERR 1 ' Clear overflow automatically
DEFINE HSER_SPBRG 34  ' 115200 Baud @ 16MHz, -0.79%
SPBRGH = 0
BAUDCON.3 = 1         ' Enable 16 bit baudrate generator

My PicMultiCalc should help you a little bit
http://www.mister-e.org/pages/utilitiespag.html