The config bits settings for usart in pic18f4550 at baud rate 9600 using CCS

I had problem using the usart feature of PIC18F4550.
I facing problem on sending data using TX pin of PIC18F4550.
I tried to send Eg: putc(0b10101010); to send 10101010 to other PIC.
It does not show anything.
the code for receiving is input = getch();
I using CCS software.
Thanks for your professional help.

Can you please post your code?

This is the code for transmitter side of PIC18F4550
#include "main.h"
#include "LCD.c"

void main()
{
setup_adc_ports(NO_ANALOGS|VSS_VDD);
setup_adc(ADC_OFF);
setup_wdt(WDT_OFF);
setup_timer_0(RTCC_INTERNAL);
setup_timer_1(T1_DISABLED);
setup_comparator(NC_NC_NC_NC);
setup_vref(FALSE);
//Setup_Oscillator parameter not selected from Intr Oscillator Config tab


// TODO: USER CODE!!
lcd_init();


while(true)
{


//Body
putc(0b10101010);
}
}
This is the main.h for PIC18F4550
#include <18F4550.h>
#device adc=8

#FUSES NOWDT //No Watch Dog Timer
#FUSES WDT128 //Watch Dog Timer uses 1:128 Postscale
#FUSES HS //High speed Osc (> 4mhz for PCM/PCH) (>10mhz for PCD)
#FUSES NOPROTECT //Code not protected from reading
#FUSES BROWNOUT //Reset when brownout detected
#FUSES BORV20 //Brownout reset at 2.0V
#FUSES NOPUT //No Power Up Timer
#FUSES NOCPD //No EE protection
#FUSES STVREN //Stack full/underflow will cause reset
#FUSES NODEBUG //No Debug mode for ICD
#FUSES NOLVP //Low Voltage Programming on B3(PIC16) or B5(PIC18)
#FUSES NOWRT //Program memory not write protected
#FUSES NOWRTD //Data EEPROM not write protected
#FUSES IESO //Internal External Switch Over mode enabled
#FUSES FCMEN //Fail-safe clock monitor enabled
#FUSES NOPBADEN //PORTB pins are configured as analog input channels on RESET
#FUSES NOWRTC //configuration not registers write protected
#FUSES NOWRTB //Boot block not write protected
#FUSES NOEBTR //Memory not protected from table reads
#FUSES NOEBTRB //Boot block not protected from table reads
#FUSES NOCPB //No Boot Block code protection
#FUSES MCLR //Master Clear pin enabled
#FUSES LPT1OSC //Timer1 configured for low-power operation
#FUSES NOXINST //Extended set extension and Indexed Addressing mode disabled (Legacy mode)
#FUSES PLL12 //Divide By 12(48MHz oscillator input)
#FUSES CPUDIV4 //System Clock by 4
#FUSES USBDIV //USB clock source comes from PLL divide by 2
#FUSES VREGEN //USB voltage regulator enabled
#FUSES ICPRT //ICPRT enabled

#use delay(clock=20000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8)




This is the usart.h code for receiver side, I plan to use PIC16F877A
#ifndef _SERIAL_H_
#define _SERIAL_H_

#define BAUD 9600
#define FOSC 20000000L
#define NINE 0 /* Use 9bit communication? FALSE=8bit */

#define DIVIDER ((int)(FOSC/(16UL * BAUD) -1))
#define HIGH_SPEED 1

#if NINE == 1
#define NINE_BITS 0x40
#else
#define NINE_BITS 0
#endif

#if HIGH_SPEED == 1
#define SPEED 0x4
#else
#define SPEED 0
#endif

#if defined(_16F87) || defined(_16F88)
// #define RX_PIN TRISB2
// #define TX_PIN TRISB5
//#else
#define RX_PIN TRISC7
#define TX_PIN TRISC6
#endif

/* Serial initialization */
#define init_comms()\
RX_PIN = 1; \
TX_PIN = 1; \
SPBRG = DIVIDER; \
RCSTA = (NINE_BITS|0x90); \
TXSTA = (SPEED|NINE_BITS|0x20)

void putch(unsigned char);
unsigned char getch(void);
unsigned char getche(void);

#endif

Receiver code
#include <htc.h>
#include <stdio.h> //for sprintf
#include "lcd.h" // to call function
#include "usart.h"
#include "delay.h"

__CONFIG(0x3f72);

void main (void)
{
while(1)
{
unsigned char input;
input = getch();
PORTB = input;
}
}

**It does work as what I expect. Please advice.Thanks.

Hi,

Don't try with both circuits simultaneously;

First take the transmitter only; with an uart emulator (like uart-tool in pickit2 or in micro-c or hyperterminal ) check is it transmit correct data ?.
Then check receiver same way for correct receive of data.

Then you can connect both,

Hope this helps you.