LPC2148 Code.c

#include<lpc214x.h>
#define bit(x) (1<<x)
#define delay for(i=0;i<7000;i++);
 
#define SOUND (IO1PIN & (1<<24))
 
unsigned int i;
 
void lcd_int();
void dat(unsigned char);
void cmd(unsigned char);
void string(unsigned char *);
 
void main()
{
    IO0DIR =0XFFF;
    IO1DIR = 0x0;
    lcd_int();
    cmd(0x80);
    string("Group 12");
    while(1) {
            if(SOUND == 0) {  //When the sound detection module detects a signal, Print in the LCD
                    string("Sound Detected");
            }
            delay;delay;
            cmd(0x01);
        }
}
 
void lcd_int()
{
    cmd(0x38);
    cmd(0x0c);
    cmd(0x06);
    cmd(0x01);
    cmd(0x80);
}
 
void cmd(unsigned char a)
{
    IO0PIN&=0x00;
    IO0PIN|=(a<<0);
    IO0CLR|=bit(8);                //rs=0
    IO0CLR|=bit(9);                //rw=0
    IO0SET|=bit(10);               //en=1
    delay;
    IO0CLR|=bit(10);               //en=0
}
 
void dat(unsigned char b)
{
    IO0PIN&=0x00;
    IO0PIN|=(b<<0);
    IO0SET|=bit(8);                //rs=1
    IO0CLR|=bit(9);                //rw=0
    IO0SET|=bit(10);               //en=1
    delay;
    IO0CLR|=bit(10);               //en=0
}
 
void string(unsigned char *p)
{
    while(*p!='\0') {
        dat(*p++);
    }
}