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16 * 2 LCD interfacing with NXP 89v51rd2

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krishnaraj.jadav

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I am using 89v51rd2 NXP controller.I prepared whole circuit but when i run my circuit nothing happen.
I am confuse whether i used wrong port for pins.Please help me out from this problem

port 1 pins

rs-p1^0
e-p1^2
rw-ground

Port 2 pins

D0 to D7- port 2
View attachment lcd kraj.bmp

Code:

#include<reg51.h>

void delay(int);
void lcdinit(void);
void writecmd(int);
void writedata(char);

sbit RS=P1^0;
sbit E=P1^1;


void main(void)
{

lcdinit(); //Initilize LCD

writedata('k'); //write
writedata('r'); //write
writedata('i'); //write
writedata('s'); //write
writedata('h'); //write
writedata('n'); //write
writedata('a'); //write
writedata('r'); //write
writedata('a'); //write
writedata('j'); //write

while(1)
{
}

}

void writedata(char t)
{
RS = 1; // => RS = 1
P2 = t; //Data transfer
E = 1; // => E = 1
delay(150);
E = 0; // => E = 0
delay(150);
}


void writecmd(int z)
{
RS = 0; // => RS = 0
P2 = z; //Data transfer
E = 1; // => E = 1
delay(150);
E = 0; // => E = 0
delay(150);
}

void lcdinit(void)
{
writecmd(0x38); //function set
writecmd(0x0c); //display on,cursor off,blink off
writecmd(0x01); //clear display
writecmd(0x80);
writecmd(0x06); //entry mode, set increment

}

void delay(int a)
{
int i;
for(i=0;i<a;i++); //null statement
}
 

krishnaraj.jadav

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140320131282.jpg

Finally Circuit Run :)
 

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