Up Down Count berikut ini adalah simulasi up down count sederhana menggunakan LCD yang di simulasikan menggunakan proteus .Langsung saja untuk skemanya sebagai berikut :
Up down count ini menggukan IC Atmega 16 sebagai mikrokontrollernya dan LCD 16x2 sebagai penampil displaynya.Untuk membuatnya siapkan semua toll yang diperlukan dan komponen pastinya.Setelah semua siap mesti ada pertanyaan mana source codenya?jangan bingung dengan source codenya karena berikut adalah source codenya:
#include mega16.h
#include stdlib.h
// Alphanumeric LCD functions
#include alcd.h
// Declare your global variables here
//eeprom
int data=0;
unsigned char tampil[6];
bit status_up=0,status_down=0;
#define tombol_up PINB.1
#define tombol_down PINB.0
#define on 0
#define off 1
void main(void)
{
// Declare your local variables here
// Input/Output Ports initialization
// Port A initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTA=0x00;
DDRA=0x00;
// Port B initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=P State0=P
PORTB=0x03;
DDRB=0x00;
// Port C initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTC=0x00;
DDRC=0x00;
// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTD=0x00;
DDRD=0x00;
// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=0xFF
// OC0 output: Disconnected
TCCR0=0x00;
TCNT0=0x00;
OCR0=0x00;
// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer1 Stopped
// Mode: Normal top=0xFFFF
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;
// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer2 Stopped
// Mode: Normal top=0xFF
// OC2 output: Disconnected
ASSR=0x00;
TCCR2=0x00;
TCNT2=0x00;
OCR2=0x00;
// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
// INT2: Off
MCUCR=0x00;
MCUCSR=0x00;
// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x00;
// USART initialization
// USART disabled
UCSRB=0x00;
// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;
// ADC initialization
// ADC disabled
ADCSRA=0x00;
// SPI initialization
// SPI disabled
SPCR=0x00;
// TWI initialization
// TWI disabled
TWCR=0x00;
// Alphanumeric LCD initialization
// Connections are specified in the
// Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu:
// RS - PORTC Bit 0
// RD - PORTC Bit 1
// EN - PORTC Bit 2
// D4 - PORTC Bit 4
// D5 - PORTC Bit 5
// D6 - PORTC Bit 6
// D7 - PORTC Bit 7
// Characters/line: 16
lcd_init(16);
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf(" UP DOWN ");
lcd_gotoxy(0,1);
lcd_putsf("DATA:");
while (1)
{
// Place your code here
if (tombol_up==off) status_up=on;
if ((tombol_up==on)&(status_up==on)) { data++;
if (data>=1000){ data=1000;}
status_up=off;
lcd_clear();
}
if (tombol_down==off) status_down=on;
if ((tombol_down==on)&(status_down==on)) {
data--;
if (data<1){ data=0;}
status_down=off;
lcd_clear();
}
lcd_gotoxy(0,0);
lcd_putsf(" UP DOWN");
lcd_gotoxy(0,1);
lcd_putsf("DATA COUNT:");
itoa(data,tampil);
lcd_gotoxy(12,1);
lcd_puts(tampil);
}
}
Oke semua sudah komplit tinggal compile source codenya dan programkan ke IC Atmega 16,rakit cek dan coba.Semoga bermanfaat
