UART communication using 2 dsPIC's

[prodigyaj]

dspic uart

hy all ,

I am very new to communicating the dsPIC's via UART. I use 2 controllers dsPICFJ128MC804 and dsPIC33FJ128MC802. The transmitter is 804 and reciver is 802.

my code for transmitter is as follows :

int main(void)
{
setup();
int i;

   /* wait at least 104 usec (1/9600) before sending first char , we wait atleast 200uS for safety */
   for(i = 0; i < 8000; i++)
       {
           Nop();
       }

   U1TXREG = 'a'; // Transmit one character
   while(1)
   {
   }
}
   void __attribute__((__interrupt__)) _U1TXInterrupt(void)
   {
   IFS0bits.U1TXIF = 0; // clear TX interrupt flag
   U1TXREG = 'a'; // Transmit one character
   }

for the receiver code for 802 is as follows

#include <p33fj128mc802.h>
#include <libpic30.h>
#define FCY   39613750L  //define FCY = FOSC/2, before including mydelay.h
#include <mydelay.h>
extern void setup(void);

int main(void)
{
int flag=0;
char ReceivedChar;
_LATB1=_LATB6=_LATB7=_LATB8=_LATB9=1;
setup();

while(flag==0)
   {
   
       _LATB7=0;
   //     check for receive errors 
       if(U1STAbits.FERR == 1)
       {
       continue;
       }

   //     must clear the overrun error to keep uart receiving 
       if(U1STAbits.OERR == 1)
       {
       U1STAbits.OERR = 0;
       continue;
       }

   //     get the data 
       if(U1STAbits.URXDA == 1)
       {
       ReceivedChar = U1RXREG;
       flag = 1;
       _LATB8=0;
       }
   
   }

   if ( ReceivedChar == 'a' )
       {
               _LATB1=_LATB6=0;
       }

   while(1){}
}

In the setup i have set everything properly to the corresponding re programmable pins. My LED at _LATB7 is always ON. and there is no transmission taking place.
Both are configured to work at 80Mhz.

Any solution to the problem ? ANy error in code ?

let me add I use baud rate of 9600 and internal oscillator