Halo :D , kali ini saya akan share tentang membuat Rangkaian Jam Digital LCD Menggunakan Mikrokontroler Atmega 16. Berikut bahannya ya :
kemudian layoutnya jadi seperti ini
Untuk Scriptnya dibawah ini. Oiya software compilernya saya pakai Atmel studio.
=====================================================================
#define F_CPU 4000000UL
#include <avr/delay.h>
#include <avr/io.h>
#include <string.h>
#include <avr/interrupt.h>
/*Global Variables Declarations*/
unsigned char hours = 0;
unsigned char minutes = 0;
unsigned char seconds = 0;
char time[] = "00:00:00";
/*LCD function declarations */
void LCD_send_command(unsigned char cmnd);
void LCD_send_data(unsigned char data);
void LCD_init();
void LCD_goto(unsigned char y, unsigned char x);
void LCD_print(char *string);
void LCD_update_time(void);
/*Timer Counter 1 Compare Match A Interrupt Service Routine/Interrupt Handler*/
ISR(TIMER1_COMPA_vect);
#define LCD_DATA_PORT PORTB
#define LCD_DATA_DDR DDRB
#define LCD_DATA_PIN PINB
#define LCD_CNTRL_PORT PORTC
#define LCD_CNTRL_DDR DDRC
#define LCD_CNTRL_PIN PINC
#define LCD_RS_PIN 5
#define LCD_RW_PIN 6
#define LCD_ENABLE_PIN 7
#define SET_HOUR 3
#define SET_MINUTE 4
int main(void)
{
unsigned char i;
LCD_init();
LCD_goto(1,2);
LCD_print("KELOMPOK TUJUH");
LCD_goto(2,4);
LCD_print(time);
LCD_CNTRL_PORT = (1<<SET_HOUR | 1<<SET_MINUTE);
TCCR1B = (1<<CS12|1<<WGM12);
OCR1A = 15625-1;
TIMSK = 1<<OCIE1A;
sei();
while(1)
{
if(!(LCD_CNTRL_PIN & (1<<SET_HOUR)))
{
hours++;
if(hours > 23)
hours = 0;
}
if(!(LCD_CNTRL_PIN & (1<<SET_MINUTE)))
{
minutes++;
if(minutes > 59)
minutes = 0;
}
_delay_ms(250);
}
}
/* This function sends a command 'cmnd' to the LCD module*/
void LCD_send_command(unsigned char cmnd)
{
LCD_DATA_PORT = cmnd;
LCD_CNTRL_PORT &= ~(1<<LCD_RW_PIN);
LCD_CNTRL_PORT &= ~(1<<LCD_RS_PIN);
LCD_CNTRL_PORT |= (1<<LCD_ENABLE_PIN);
_delay_us(2);
LCD_CNTRL_PORT &= ~(1<<LCD_ENABLE_PIN);
_delay_us(100);
}
/* This function sends the data 'data' to the LCD module*/
void LCD_send_data(unsigned char data)
{
LCD_DATA_PORT = data;
LCD_CNTRL_PORT &= ~(1<<LCD_RW_PIN);
LCD_CNTRL_PORT |= (1<<LCD_RS_PIN);
LCD_CNTRL_PORT |= (1<<LCD_ENABLE_PIN);
_delay_us(2);
LCD_CNTRL_PORT &= ~(1<<LCD_ENABLE_PIN);
_delay_us(100);
}
void LCD_init()
{
LCD_CNTRL_DDR = 0xFF;
LCD_CNTRL_PORT = 0x00;
LCD_DATA_DDR = 0xFF;
LCD_DATA_PORT = 0x00;
_delay_ms(10);
LCD_send_command(0x38);
LCD_send_command(0x0C);
LCD_send_command(0x01);
_delay_ms(10);
LCD_send_command(0x06);
}
/* This function moves the cursor the line y column x on the LCD module*/
void LCD_goto(unsigned char y, unsigned char x)
{
unsigned char firstAddress[] = {0x80,0xC0,0x94,0xD4};
LCD_send_command(firstAddress[y-1] + x-1);
_delay_ms(10);
}
void LCD_print(char *string)
{
unsigned char i;
while(string[i]!=0)
{
LCD_send_data(string[i]);
i++;
}
}
void LCD_update_time()
{
unsigned char temp;
LCD_goto(2,4);
itoa(hours/10,temp,10);
LCD_print(temp);
itoa(hours%10,temp,10);
LCD_print(temp);
LCD_print(":");
itoa(minutes/10,temp,10);
LCD_print(temp);
itoa((minutes%10),temp,10);
LCD_print(temp);
LCD_print(":");
itoa(seconds/10,temp,10);
LCD_print(temp);
itoa(seconds%10,temp,10);
LCD_print(temp);
}
/*Timer Counter 1 Compare Match A Interrupt Service Routine/Interrupt Handler*/
ISR(TIMER1_COMPA_vect)
{
seconds++;
if(seconds == 60)
{
seconds = 0;
minutes++;
}
if(minutes == 60)
{
minutes = 0;
hours++;
}
if(hours > 23)
hours = 0;
LCD_update_time();
}
=======================================================================
Selamat mencoba ya, semoga bermanfaat ya
