Just need some guidance on setting up the defines for serial communications when using a particular crystal.
I'm using a 20 mhz crystal.
Here are my config settings
I've cut and pasted code from a previous project but that won't allow connection with the port.
I've tried changing the baud rate to 9600, and different values for SPBRG as I'm not running the PIC at 40Mhz...
Any help would be appreciated
Malcolm
I'm using a 20 mhz crystal.
Here are my config settings
Code:
ASM
__CONFIG _CONFIG1H, _OSC_HS_1H
__CONFIG _CONFIG2L, _PWRT_ON_2L
__CONFIG _CONFIG2H, _WDT_ON_2H & _WDTPS_512_2H
__CONFIG _CONFIG3H, _MCLRE_ON_3H & _LPT1OSC_OFF_3H & _PBADEN_OFF_3H
__CONFIG _CONFIG4L, _LVP_OFF_4L & _XINST_OFF_4L
ENDASMCode:
DEFINE HSER_BAUD 115200 ' Hser baud rate
DEFINE HSER_RCSTA 90h ' Hser receive status init
DEFINE HSER_TXSTA 20h ' Hser transmit status init
DEFINE HSER_CLROERR 1 ' Hser clear overflow automatically
DEFINE HSER_SPBRG 25 ' 115200 Baud @ 40MHz, -0.22%
SPBRGH = 0
BAUDCON.3 = 1 ' Enable 16 bit baudrate generator
ColumnWidth CON 10Any help would be appreciated
Malcolm