/*
sensor.c
*/
#include <16F877A.h>
#device adc=8
#use delay(clock=20000000)
#fuses NOWDT,HS, PUT, BROWNOUT, NOLVP


// #use rs232(baud=9600,xmit=PIN_C6,rcv=PIN_C7)
// i exchange pin_c6 & c7 because 2 ports are connected directly

#use rs232(baud=9600,xmit=PIN_C7,rcv=PIN_C6)
#use i2c(Master,Fast,sda=PIN_C4,scl=PIN_C3)

void main() {

while (1) {
printf("Hello World!");
}

}

/*
receiver.c
*/

#include <16F877A.h>
#device adc=8
#use delay(clock=20000000)
#fuses NOWDT,HS, PUT, BROWNOUT, NOLVP
#use rs232(baud=9600,xmit=PIN_C6,rcv=PIN_C7)
#use i2c(Master,Fast,sda=PIN_C4,scl=PIN_C3)

#USE RS232(BAUD=9600, XMIT=PIN_C6, RCV=PIN_C7, STREAM=RS_DEBUG)
#USE RS232(BAUD=9600, XMIT=PIN_B6, RCV=PIN_B7, STREAM=RS_DATA)

void main() {

while (1) {

fprintf(RS_DEBUG, "--%C", fgetc(RS_DATA));
}

}

I got 2 rs232 port on receiver. one is for debugging, one is for receiving data from sensor.
However, it only generates rubbish on the screen, but not "Hello World"

How to display data from other PIC via rs232?

cheers

 

It sounds like your baud rate is slightly off. Try rechecking your baud rate generation and make sure it's correct.

Brent