LCD interfacing with AT89S52

[RANJEET]

I wirte code for LCD interfacing with AT89S52. It's showing characters on display but  the problem is 'each character is repeated 3 times'. my code is given below

#include<reg52.h>

#define ldata P1

sbit rs=P2^2;

sbit rw=P2^1;

sbit en=P2^0;

 

void delay();

void lcdcmd();

void lcddat();

 

void delay(unsigned int value)

{

unsigned int i,j;

for(j=0;j<1275;j++)

{

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

}

}

void lcdcmd(unsigned char cmd)

{

ldata=cmd;

rs=0;

rw=0;

en=1;

delay(10);

en=0;

return;

}

void lcddat(unsigned char dat)

{

ldata=dat;

rs=1;

rw=0;

en=1;

delay(10);

en=0;

return;

}

 

void main()

{

lcdcmd(0x38);

delay(50);

lcdcmd(0x0E);

delay(50);

lcdcmd(0x01);

delay(50);

lcdcmd(0x06);

delay(50);

lcdcmd(0x86);

delay(50);

 

lcddat('R');

lcddat('A');

lcddat('K');

 

}

 

[Hari Prasaath K]

Look at the link for tutorial, you will get the solution

https://www.engineersgarage.com/microcontroller/8051projects/display-text-LCD-AT89C51-circuit

[Ashutosh Bhatt]

you have not given enough delay before sending data or command to LCD

pls refer other LCD interfacing programs

[Author]

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