Tuesday, August 9, 2011

Interface 16x2 LCD with 8051 microcontroller (AT89C51)






//Program to test LCD. Display single character "A"

#include
#define cmdport P3
#define dataport P2
#define q 100
sbit rs = cmdport^0; //register select pin
sbit rw = cmdport^1; // read write pin
sbit e = cmdport^6; //enable pin

void delay(unsigned int msec) // Function to provide time delay in msec.
{
int i,j ;
for(i=0;ifor(j=0;j<1275;j++);
}

void lcdcmd(unsigned char item) //Function to send command to LCD
{
dataport = item;
rs= 0;
rw=0;
e=1;
delay(1);
e=0;
}

void lcddata(unsigned char item) //Function to send data to LCD
{
dataport = item;
rs= 1;
rw=0;
e=1;
delay(1);
e=0;
}

void main()
{
lcdcmd(0x38); // for using 8-bit 2 row mode of LCD
delay(100);
lcdcmd(0x0E); // turn display ON for cursor blinking
delay(100);
lcdcmd(0x01); //clear screen
delay(100);
lcdcmd(0x06); //display ON
delay(100);
lcdcmd(0x86); // bring cursor to position 6 of line 1
delay(100);
lcddata('A');
}

3 comments:

  1. Great Work!

    Naksh

    www.nrdcentre.com

    ReplyDelete
  2. The fundamental reasons individuals like them are they are thin and lightweight, there is almost no glare on the screen, they use about half as much vitality as a Plasma, there is no difference in a screen consume in like in a Plasma, and they come in sizes from around 19 inches and up to no less than 65 inches of screen estimate.Best 19 inch tvs

    ReplyDelete
  3. I like models private text. It can be really good to seek out a person demonstrate around thoughts within the main and perhaps wholesomeness in such a special vitally important market might be effortlessly expert. 24 inch flat screen tv

    ReplyDelete