#include <LPC21xx.H>
void delay(int count ) ;
void lcddata(int c);
void lcdcmd(int t);
void delay(int count)
{
int j=0, i=0;
for (j=0;j<count;j++)
for (i=0;i<250;i++);
}
void lcdcmd(int t)
{
int s=0;
s=(t>>4) & 0x0f;
s=s << 16;
IO0CLR=0x10000000; // rs =0 p0.28
IO0CLR=0x20000000; // rw =0 p0.29
IO0SET=0x40000000;
IO1CLR=0X000F0000;
IO1SET = s;
delay(1000);
IO0CLR=0x40000000; //en=0 p0.30
s = t & 0x0f;
s=s<<16;
IO0CLR=0x10000000; // rs =1 p0.28
IO0CLR=0x20000000; // rw =0 p0.29
IO0SET=0x40000000;
IO1CLR=0X000F0000;
IO1SET = s;
delay(1000);
IO0CLR=0x40000000; //en=0 p0.30
}
void lcddata(int c)
{
int d=0;
d=((c>>4) & 0x0f);
d= d<<16;
IO0SET=0x10000000; // rs =1 p0.28
IO0CLR=0x20000000; // rw =0 p0.29
IO0SET=0x40000000;
IO1CLR=0X000F0000;
IO1SET = d;
delay(1000);
IO0CLR=0x40000000; //en=0 p0.30
d= c & 0x0f;
d=d<<16;
IO0SET=0x10000000; // rs =1 p0.28
IO0CLR=0x20000000; // rw =0 p0.29
IO0SET=0x40000000;
IO1CLR=0X000F0000;
IO1SET = d;
delay(1000);
IO0CLR=0x40000000; //en=0 p0.30
}
void msgdisplay(unsigned char k[])
{
int i;
for(i=0; k!=’ ’; i++)
{
lcddata(k);
delay(1000);
}
}
int main( )
{
PINSEL1=0X00000000;
PINSEL2=0X00000000;
IO0DIR=0X70000000;
IO1DIR=0X000f0000;
delay(100);
lcdcmd(0x02);
lcdcmd(0x28);
lcdcmd(0x0c);
lcdcmd(0x06);
lcdcmd(0x01);
while(1)
{
msgdisplay(“INFORMATION”);
delay(1000);
//lcdcmd(0xc0);
//msgdisplay(“HYDERABAD”);
//delay(1000);
}
}