The document contains code snippets for several microcontroller programs including a buzzer, LCD display, down counter, up counter, left shift, right shift, and voltage converter/ADC. The code defines pin configurations, registers, and functions for delay, counting, shifting bits, and reading analog voltage values from an ADC converter.

1. Buzzer:
#include <lpc214x.h>
#define BUZZER_ON() IO1CLR=(1<<25)
#define BUZZER_OFF() IO1SET=(1<<25)
#define Count 100
void Buzzer_Delay(unsigned char j);
void Buzzer_Delay(unsigned char j)
{
unsigned int i;
for(;j>0;j--)
{
for(i=0; i<60000; i++);
}
}
int main(void)
{
PINSEL0 = 0x0000000;
PINSEL1 = 0x00000000;
PINSEL2 = 0x00000000;
IO1DIR = (1<<25) ;
while(1)
{
BUZZER_ON();
Buzzer_Delay(Count);
BUZZER_OFF();
}
}

2. LCD:
#include "lcd.h"
unsigned char Name[]="MyName";
unsigned char Surname[] = "Surname";
int main (void)
{
init_lcd();
lcd_putstring(0,Name);
lcd_putstring(1,Surname);
while (1) ;
}
-------------------------------not required to write if not asked for it-------------------------------------------
#ifndef _LCD_H
#define _LCD_H
#define MAX_CHAR_IN_ONE_LINE 16
enum ROW_NUMBERS
{
LINE1,
LINE2
};
void init_lcd(void);
void lcd_putstring(unsigned char line, char *string);
void lcd_clear(void);
void lcd_backlight_on(void);
int lcd_gotoxy(unsigned int x, unsigned int y);
void lcd_putchar(int c);
#endif

3. Down counter:
#include<p24fj128ga010.h>
_CONFIG1( JTAGEN_OFF & GCP_OFF & GWRP_OFF & COE_OFF & FWDTEN_OFF & ICS_PGx2)
_CONFIG2( FCKSM_CSDCMD & OSCIOFNC_OFF & POSCMOD_XT & FNOSC_PRI)
void delay();
int main(void)
{
unsigned int b=255;
TRISA = 0x0000;
while(1)
{
PORTA=b;
delay();
delay();
b--;
if (!b)
{
delay();
delay();
delay();
delay();
b = 255;
}
}
}

4. void delay()
{
long int x;
for(x=0;x<90000;x++);
}
UP counter:
#include<p24fj128ga010.h>
_CONFIG1( JTAGEN_OFF & GCP_OFF & GWRP_OFF & COE_OFF & FWDTEN_OFF & ICS_PGx2)
_CONFIG2( FCKSM_CSDCMD & OSCIOFNC_OFF & POSCMOD_XT & FNOSC_PRI)
void delay();
int main(void)
{
unsigned int b=1;
TRISA = 0x0000;
while(1)
{
PORTA=b;
delay();
delay();
b++;
if (!b)
{
delay();

5. delay();
delay();
delay();
b = 0x0000;
}
}
}
void delay()
{
long int x;
for(x=0;x<90000;x++);
}
Left shift:
#include<p24fj128ga010.h>
_CONFIG1( JTAGEN_OFF & GCP_OFF & GWRP_OFF & COE_OFF & FWDTEN_OFF & ICS_PGx2)
_CONFIG2( FCKSM_CSDCMD & OSCIOFNC_OFF & POSCMOD_XT & FNOSC_PRI)
#define init_count 1
void delay();
unsigned int counter;
int main(void)
{
int i;
TRISA = 0x0000;
counter = init_count;

6. while(1)
{
for(i=0;i<8;i++)
{
PORTA=counter;
delay();
counter = counter << 1;
}
counter = 1;
}
}
void delay()
{
long int x;
for(x=0;x<90000;x++);
}
Right shift:
#include<p24fj128ga010.h>
_CONFIG1( JTAGEN_OFF & GCP_OFF & GWRP_OFF & COE_OFF & FWDTEN_OFF & ICS_PGx2)
_CONFIG2( FCKSM_CSDCMD & OSCIOFNC_OFF & POSCMOD_XT & FNOSC_PRI)
#define init_count 128
void delay();
unsigned int counter;
int main(void)

7. {
int i;
TRISA = 0x0000;
counter = init_count;
while(1)
{
for(i=0;i<8;i++)
{
PORTA=counter;
delay();
counter = counter >> 1;
}
counter = 128;
}
}
void delay()
{
long int x;
for(x=0;x<60000;x++);
}
Voltage converter/ADC:
#include<p24fj128ga010.h>
_CONFIG1( JTAGEN_OFF & GCP_OFF & GWRP_OFF & COE_OFF & FWDTEN_OFF & ICS_PGx2)
_CONFIG2( FCKSM_CSDCMD & OSCIOFNC_OFF & POSCMOD_XT & FNOSC_PRI)

8. #define init_count 128
int main(void)
{
unsigned int ADC_Result;
TRISA = 0x0000;
AD1CON1 = 0x80E4;
AD1CON2 = 0;
AD1CON3 = 0x1F05;
AD1CHS = 5;
TRISBbits.TRISB2 = 1;
TRISBbits.TRISB3 = 1;
AD1PCFGbits.PCFG5 = 0;
AD1CSSL = 0;
AD1CON1bits.ADON = 1;
while (1)
{
while(!AD1CON1bits.DONE);
ADC_Result = (long) ADC1BUF0;
ADC_Result >>= 7;
PORTA = (0x80 >> ADC_Result);
}
}

9. Note:
Device specific keywords in the program for ex: PORTA or TRISA etc are case sensitive.
Take care to ensure the cases in the program while executing.