lcd is not displaying i am AT89C51 on proteus

[ADORE]

i am a beginner please help

 

[Ian Rogers]

Your main loop is over 200 lines long.....

On Proteus, you have to init() the screen by the book...

send 0x30 three times with the correct delays 15ms, 5ms and 5ms..
Then 0x38 etc...

I cannot follow your foreverloop. its painstaking.. there is a mismatch in the braces ( but that could have been me..)

here it is for the others to fallasleep to..

#include<reg51.h>
#include<stdio.h>
#include<math.h>
#define dataport P1
sbit cap1=P0^0;
sbit cap2=P0^1;
sbit cap3=P0^2;
sbit cap4=P0^3;
sbit relay=P0^4;
sbit autoled=P0^5;
sbit manualled=P2^0;
sbit clsw=P0^6;
sbit amsw=P0^7;
char array[10];
//char array1[16];
void TOM1Delay(void);
sbit rs=P2^3;
sbit rw=P2^2;
sbit en=P2^1;
sbit sw1=P2^4;
sbit sw2=P2^5;
sbit sw3=P2^6;
sbit sw4=P2^7;
sbit white=P3^2;
sbit black=P3^3;
void delay_ms(unsigned int count)
    {
    unsigned int i,j;
        for(i=0;i<=count;i++)
        {
            for(j=0;j<=56;j++);
        }
    }
void lcdcmd(unsigned char cmd) // send command to LCD
    {
    dataport=cmd;
    rs=0,en=1;
    delay_ms(2),
    en=0;
    }
void lcddata(unsigned char item) //send data to LCD
    {
    dataport=item;
    rs=1,en=1;
    delay_ms(2),en=0;
    }
void lcd_init() //LCD initialize
    {
    lcdcmd(0x38);
    lcdcmd(0x06);
    lcdcmd(0x0c);
    lcdcmd(0x01);
    }
void lcd_string(unsigned char *text,unsigned int loc)
    {
    int i;
    lcdcmd(loc);
    delay_ms(500);
    for(i=0;text[i]!='\0';i++)
        {
        lcddata(text[i]);
        }
    }
void TOM1Delay(void)
    {
    TMOD=0X01;
    TL0=0XFD;
    TH0=0X4B;
    TR0=1;
    while(TF0==0);
    TR0=0;
    TF0=0;
    }
void main(void)
    {
     int a=0, b=0;
     float c=0, cd=0, d=0, e=0, f=0, pf=0, pf1=0, pf2=0, ipf=0;
     rw=0;
     relay=0;
     lcd_init();
     lcd_string("POWER FACTOR ", 0x80);
     lcd_string("CONTROLLER ", 0xC0);
     TMOD=0X01;
     TL0=0X00;
     TH0=0X00;
     cap1=0; //relay1 on
     cap2=0; //relay2 off
     cap3=0;
     cap4=0;
     lcdcmd(0x01);
     while(1)
        {
         //AUTO MODE //
        if(amsw==1)
            {
            autoled=1;
            manualled=0;
        TL0=0X00;
        TH0=0X00;
        while(white==1);
        while(white==0);
        TR0=1;
        while(black==0);
        TR0=0;
        a=TL0;
        b=TH0;
        c=b*256;
        d=c+a;
        d=d*1.085;
        d=d/1000;
        if(d<5)
            {
            e=d*18*0.017453292;
            pf=cos(e);
           
            sprintf(array,"%.2f msec",d);
            lcd_string("I LAGS=", 0x80);
            lcd_string(array, 0x87);
            sprintf(array,"%.2f",pf);
            lcd_string("PF=------", 0xC0);
            lcd_string(array, 0xC3);
             if(d<1)
                {
                lcd_string("OFF CAPACITORS ", 0xC9);
                cap1=0; //relay1 off
                cap2=0; //relay2 off
                cap3=0;
                cap4=0;
                }
            else if(d<2)
                {
                cap1=1; //relay1 on
                cap2=0; //relay2 off
                cap3=0;
                cap4=0;
                lcd_string("ONE capacitor ON ", 0xC9);
                }
            else if(d<3)
                {
                ;
                cap1=1; //relay1 on
                cap2=1; //relay2 on
                cap3=0;
                cap4=0;
                lcd_string("TWO capacitor ON ", 0xC9);
                }
            else if(d<4)
                {
                ;
                cap1=1; //relay1 on
                cap2=1; //relay2 on
                cap3=1;
                cap4=0;
                lcd_string("THREE capacitor ON ", 0xC9);
                }
            else if(d<5)
                {
                ;
                cap1=1; //relay1 on
                cap2=1; //relay2 on
                cap3=1;
                cap4=1;
                lcd_string("FOUR capacitor ON ", 0xC9);
                }
            }
        else
            {
            cap1=0; //relay1 off
            cap2=0; //relay2 off
            cap3=0;
            cap4=0;
            cd=10-d;
            e=cd*18*0.017453292;
            pf=cos(e);
            sprintf(array,"%.2f msec",cd);
            lcd_string("I LEADS=", 0x80);
            lcd_string(array, 0x88);
            sprintf(array,"%.2f",pf);
            lcd_string("PF=------", 0xC0);
            lcd_string(array, 0xC3);
            }
        if(clsw==0)
            {
            relay=0;
            }
        else
            {
            relay=1;
            }
        }
     // MANUAL MODE //
     else
        {
        autoled=0;
        manualled=1;
        TL0=0X00;
        TH0=0X00;
        while(white==1);
        while(white==0);
        TR0=1;
        TR0=0;
        a=TL0;
        b=TH0;
        c=b*256;
        d=c+a;
        d=d*1.085;
        d=d/1000;
        pf=cos(e);
   
        if(sw1==0)
            {
            cap1=1;
            }
        else
            {
            cap1=0;
            }
        if(sw2==0)
            {
            cap2=1;
            }
        else
            {
            cap2=0;
            }
        if(sw3==0)
            {
            cap3=1;
            }
        else
            {
            cap3=0;
            }
        if(sw4==0)
            {
            cap4=1;
            }
        else
            {
            cap4=0;
            }
   
        if(d<5)
            {
            sprintf(array,"%.2f msec",d);
            lcd_string("I LAGS=", 0x80);
            lcd_string(array, 0x87);
            sprintf(array,"%.2f",pf);
            lcd_string("PF = ----------- ", 0xC0);
            lcd_string(array, 0xC5);
            if(clsw==0)
                {
                relay=0; //lagging
                 pf1=pf;
                }
            else
                {
                relay=1; //compensated
                delay_ms(2000);
                pf2=pf;
                ipf=pf2-pf1;
                sprintf(array,"%.2f",ipf);
                if(pf1>0)
                    {
                    lcdcmd(0x01);
                    lcd_string("IMPROOVED PF =", 0x80);
                    lcd_string(array, 0xC0);
                    }
                else
                    {
                    lcdcmd(0x01);
                    lcd_string("plese measure PF", 0x80);
                    lcd_string("in lagging mode", 0xC0);
                    }
                delay_ms(2000);
                lcdcmd(0x01);
                }
            }
        else
            {
            cd=10-d;
            e=cd*18*0.017453292;
            pf=cos(e);
            sprintf(array,"%.2f msec",cd);
            lcd_string("I LEADS=", 0x80);
            lcd_string(array, 0x88);
            sprintf(array,"%.2f",pf);
            lcd_string("PF = ", 0xC0);
            lcd_string(array, 0xC5);
            if(clsw==0)
                {
                relay=0; //lagging
                pf1=pf;
                }
            else
                {
                relay=1;
                delay_ms(2000);
                pf2=pf;
                sprintf(array,"%.2f",ipf);
                if(pf1>0)
                    {
                    lcdcmd(0x01);
                    lcd_string("IMPROOVED PF =", 0x80);
                    lcd_string(array, 0xC0);
                    }
                else
                    {
                    lcdcmd(0x01);
                    lcd_string("plese measure PF", 0x80);
                    lcd_string("in lagging mode", 0xC0);
                    }
                lcdcmd(0x01);
                }
            }
        }
    }