pic stop when read RS232 ???

[lerastas]

Hello everybody, I would like if you know why my pic 16F876A stop the read of RS232.

In fact, the pic read the data but stop when it want!!! I don't know why. Is it because the GPS data doesn't send the data every time. But my code wait a $ before continue.
It's the GPGGA data.

If anyone can reply, it will be cool!!

Thanks, sorry for the English!!

Lerastas

#include <16F876A.h>

#use delay(clock=20000000)
#use rs232(baud=38400,xmit=PIN_C6,rcv=PIN_C7, stream=GPS)
#include <string.h>
#include <stdlib.h>

char k;
char i;
char string[6];
char buffer[45];
char compar[]="GPGGA,";
char heure[3], minutes[3], sec[3], ms[3], sat[3], trame[6];

void read_GPS ()
{
while ( fgetc(GPS) != 36 ); // wait a $

for (k=0;k<45;k++) buffer[k]=fgetc(GPS);

while (strncmp(buffer,compar,6)!=0);

for (i=0; i<2; i++)
{
heure[i]=buffer[i+6];
heure[2] = '\0';
}
for (i=0; i<2; i++)
{
minutes[i]=buffer[i+8];
minutes[2] = '\0';
}
for (i=0; i<2; i++)
{
sec[i]=buffer[i+10];
sec[2] = '\0';
}
for (i=0; i<2; i++)
{
ms[i]=buffer[i+13];
ms[2] = '\0';
}
for (i=0; i<2; i++)
{
sat[i]=buffer[i+43];
sat[2] = '\0';
}
heure_bis=atoi(heure);
minutes_bis=atoi(minutes);
sec_bis=atoi(sec);
ms_bis=atol(ms)*10;
sat_bis=atol(sat);
}


void main(void)
{
init();

while(1)
{
read_GPS(); //lecture de la trame GPS

fprintf(GPS,"donnees GPS %u heure %u minutes %u sec %u nb sat %ld ms\n\r", heure_bis,minutes_bis ,sec_bis, sat_bis,ms_bis);

}
}

[PCM programmer]

The UART receiver may be locking up. When you do the large fprintf()
statement, you are not checking the UART for incoming characters.
If the hardware fifo fills up (it can only hold 2 characters) and you
receive one more character, then the UART receiver will lock up.
You can make the compiler add code to automatically clear the lock-up
by adding the ERRORS parameter as shown in bold below.