Trying to run this code but cant go through it. needs help!!!

[fadi]

#include<reg51.h>

#define port2 P2

sbit rs = P1^0;

sbit rw = P1^1;

sbit e = P1^2;

char info[70];

char test[6]={“$GPGGA”};

char comma_position[15];

unsigned int check=0,i;

unsigned char a;

void receive_data();

void lcd_latitude();

void lcd_longitude();

 

//DELAY FUNCTION

void delay(unsigned int msec)

{

int i,j ;

for(i=0;i<msec;i++)

for(j=0;j<1275;j++); 

}

 

// LCD COMMAND SENDING FUNCTION

void lcd_cmd(unsigned char item)

{

port2 = item;

rs= 0;

rw=0;

e=1;

delay(1);

e=0;

return;

} 

 

// LCD DATA SENDING FUNCTION

void lcd_data(unsigned char item)

{

port2 = item;

rs= 1;

rw=0;

e=1;

delay(1);

e=0;    

return;

}

 

 // LCD STRING SENDING FUNCTION 

void lcd_string(unsigned char *str)

{

int i=0;

while(str!=’’)

{

        lcd_data(str);

        i++;

        delay(10);

   }

        return;

}

 

// SERIAL PORT SETTING

void serial()

{

TMOD=0x20;      //MODE=2

TH1=0xfa;     // 4800 BAUD

SCON=0x50  ;    // SERIAL MODE 1 ,8- BIT DATA ,1 STOP BIT ,1 START BIT , RECEIVING ON

TR1=1;         //TIMER START

}

 

void find_comma()

{

unsigned int i,count=0;

for(i=0;i<70;i++)

{

if(info==’,’)

{

comma_position[count++]=i;

}

    }

}

void compare()

{  

IE=0x00;       //Interrupt disable 

find_comma();   //Function to detect position of comma in the string

lcd_latitude();   //Function to show Latitude

lcd_longitude(); //Function to show Longitude

check=0;

IE=0x90;   //Interrupt enable

}

void receive_data()   interrupt 4  

{

info[check++]=SBUF;  //Read SBUF

if(check<7)         //Condition to check the required data

    {

if(info[check-1]!=test[check-1])

check=0;

    }

RI=0;

}

void lcd_shape()      //Function to create shape of degree

{

lcd_cmd(64);

lcd_data(10);

lcd_data(17);

lcd_data(17);

lcd_data(10);

lcd_data(0);

lcd_data(0);

lcd_data(0);

lcd_data(0);

}

 

void lcd_latitude() //Function to display Latitude

{

unsigned int c2=comma_position[1]; //Position of second comma

lcd_shape();

lcd_cmd(0x01);         // Clear LCD display

lcd_cmd(0x84);         //Move cursor to position 6 of line 1

lcd_string(“LATITUDE”); //Showing Latitude

lcd_cmd(0xC0); //Beginning of second line  

lcd_data(info[c2+1]);

lcd_data(info[c2+2]);

lcd_data(0); //Degree symbol

lcd_data(info[c2+3]);

lcd_data(info[c2+4]);

lcd_data(info[c2+5]);

lcd_data(info[c2+6]);

lcd_data(info[c2+7]);

lcd_data(info[c2+8]);

lcd_data(info[c2+9]);

lcd_data(0x27);          //ASCII of minute sign(‘)

lcd_data(info[c2+10]);

lcd_data(info[c2+11]);

delay(250);

} 

 

void lcd_longitude()

{

unsigned int c4=comma_position[3];

lcd_cmd(0x01);            //Clear LCD display

lcd_cmd(0x84);            //Move cursor to position 4 of line 1

lcd_string(“LONGITUDE”); //Showing Longitude

lcd_cmd(0xC0);    //Begining of second line  

lcd_data(info[c4+1]);

lcd_data(info[c4+2]);

lcd_data(info[c4+3]);

lcd_data(0);

lcd_data(info[c4+4]);

lcd_data(info[c4+5]);

lcd_data(info[c4+6]);

lcd_data(info[c4+7]);

lcd_data(info[c4+8]);

lcd_data(info[c4+9]);

lcd_data(info[c4+10]);

lcd_data(0x27);               //ASCII of minute sign(‘)

lcd_data(info[c4+11]);

lcd_data(info[c4+12]);

delay(250);

}

void main()

{

serial();

lcd_cmd(0x38);        //2 LINE, 5X7 MATRIX

lcd_cmd(0x0e);         //DISPLAY ON, CURSOR BLINKING

IE=0x90;

while(1)

{

if(check==69)

compare();

}

}

[Ashutosh Bhatt]

r u trying to display GPS data on LCD?

what is the problem u r gattine?

is ur GPS working fine?

[Author]

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