gps+pic

Hi,

I need to find the location by using gps

i wrote the code but its not working properly.

kindly help as soon as possible

Code:

I am reading gprmc format

#include<pic.h>
#include"gps.h"
#include"usart.h"
#include<stdio.h>
#include <string.h>

unsigned char input=0;
unsigned char getdata[5];
unsigned char gps_format[6]="GPRMC";
//unsigned char utc_time[12]={0};
unsigned char gprmc_utctime[10] = {0};
unsigned char gprmc_longitude[9] = {0};
unsigned char gprmc_latitude[9] = {0};
//unsigned char gprmc_date[16] = {0};
unsigned char status = 0x00,north_south=0x00,east_west=0x00;
unsigned char speed[4];

void gps_data_rcv()
{
unsigned int i,at,x,count;

// $GPRMC,042148.000,A,1259.0663,N,07733.2670,E,0.32, 17.36,130310,,,A*58
//input=0;
for (i=0;i<10;i++)
{
gprmc_utctime = 0x00;
//gprmc_longitude = 0x00;
//gprmc_latitude = 0x00;
}

for (i=0;i<9;i++)
{
//gprmc_utctime = 0x00;
gprmc_longitude = 0x00;
gprmc_latitude = 0x00;
}
for(i=0; i<4; i++)
{
speed=0x00;
}

for(i=0; i<5; i++)
{
getdata=0x00;
}
//sputs("GPS Data:");

while((input=getch())!='$');

for(i=0; i<5; i++)
{
getdata=getch();
}

getdata='\0';
//for(i=0; i<5; i++)
//{
//putch(getdata);
//}

if((getdata[0]=='G')&&(getdata[1]=='P')&&(getdata[2]=='R')&&(getdata[3]=='M')&&(getdata[4]=='c'))
//if(strcmp(getdata,gps_format)==0)
{

while((input=getch())!=',');

for(x=0; x<10; x++)
{
gprmc_utctime[x]=getch();
}
gprmc_utctime[x]='\0';

x=0;

sputs("Time:");

//sputs("Time: ");
putch(gprmc_utctime[x+0]);
putch(gprmc_utctime[x+1]);
putch(':');
putch(gprmc_utctime[x+2]);
putch(gprmc_utctime[x+3]);
putch(':');
putch(gprmc_utctime[x+4]);
putch(gprmc_utctime[x+5]);

while((input=getch())!=',');

while((input=getch())!='A'); //A-for Valid data, V-invalid data

while((input=getch())!=',');

for(x=0; x<9; x++)
{
gprmc_longitude[x]=getch();
}

gprmc_longitude[x]='\0';

sputs("Longitude:");

for(x=0; x<9; x++)
{
putch(gprmc_longitude[x]);
}

while((input=getch())!=',');

while((input=getch())!=('N'||'S')); //North/south

while((input=getch())!=',');


for(x=0; x<9; x++)
{

gprmc_latitude[x]=getch();
}
gprmc_latitude[x]='\0';
sputs("Latitude:");

for(x=0; x<9; x++)
{

putch(gprmc_latitude[x]);
}

while((input=getch())!=',');

while((input=getch())!=('E'||'W')); //North/south

while((input=getch())!=',');

for(x=0; x<4; x++)
{
speed[x]=getch();
}

sputs("Speed:");
for(x=0; x<4; x++)
{
putch(speed[x]);
}
// break;
}

}

Thanks in advance.