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LCD interfacing with 89C51

I am working on my final year project "RFID based Access System"..

Here's the code to interface the LCD with 89C51..

Code:
#define cmdpt P3
#define datapt P2
#define q 100
sbit rs = cmdpt^0;  //register select pin
sbit rw = cmdpt^1;  // read write pin
sbit e = cmdpt^6;  //enable pin

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

void lcdcmd(unsigned char item)  //Function to send command to LCD
{
datapt = 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(0xC7);  // bring cursor to position 6 of line 1
delay(100);
lcddata('D');
}

Comments

Nice code man....I was looking to implement the same in PIC may be I will take a look at your code .... only one small question ......r u used this code in while(1) any time....
 
Sorry Milind, I'm not getting your question...

I suppose you are asking whether it can be used in a while(1) loop all the time..
If so, the answer is yes..
 

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errakeshpillai
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