contoh kode program code vision avr

1. #include <mega16.h>
#include <stdio.h>
#include <stdlib.h>
#include <delay.h>
// Alphanumeric LCD Module functions
#asm
.equ __lcd_port=0x18 ;PORTB
#endasm
#include <lcd.h>
unsigned char indeks=0;
char temp1[16],temp2[16],temp3[16],temp4[16];
unsigned char count;
float waktu1,waktu2,percepatan,kecepatan,x;
// Timer 0 overflow interrupt service routine
interrupt [TIM0_OVF] void timer0_ovf_isr(void)
{
TCNT0=0x8A;
count++;
}
void cepat1()
{
percepatan=0.8/(0.5*(waktu1*waktu1));
lcd_gotoxy(2,1);
ftoa(percepatan,2,temp1);
lcd_puts(temp1);
}
void cepat2()
{
kecepatan=0.2/waktu2;
lcd_gotoxy(12,1);
ftoa(kecepatan,2,temp2);
lcd_puts(temp2);
}

2. void tampil_lcd1()
{
waktu1=((float)count)/10;
lcd_gotoxy(3,0);
ftoa(waktu1,2,temp3);
lcd_puts(temp3);
}
void detek_tombol()
{
if (PINA.0==1 && (indeks==0 || indeks==2))//start timer
{
indeks=1;
TIMSK=0x01;//memulai timer
lcd_clear();
}
if (PINA.1==1 && indeks==1)//stop timer
{
indeks=2;
TIMSK=0x00;//menstop timer
tampil_lcd1();
cepat1();
TIMSK=0x01;
}
if (PINA.2==1 && indeks==2)//reset timer
{
indeks=0;//semua data direset
TIMSK=0x00;//menstop timer
cepat2();
}
}

3. void tampil_lcd2()
{
lcd_gotoxy(0,0);
lcd_putsf("t1=");
lcd_gotoxy(0,1);
lcd_putsf("a=");
lcd_gotoxy(8,1);
lcd_putsf("v=");
lcd_gotoxy(8,0);
lcd_putsf("t2=");
x=((float)count)/10;
waktu2=x-waktu1;
lcd_gotoxy(12,0);
ftoa(waktu2,2,temp4);
lcd_puts(temp4);
}
void main(void)
{
PORTA=0x00;
DDRA=0x00;
// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: 11.719 kHz
// Mode: Normal top=FFh
// OC0 output: Disconnected
TCCR0=0x05;
TCNT0=0x8A;
OCR0=0x00;
// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;
// LCD module initialization
lcd_init(16);
// Global enable interrupts
#asm("sei")

4. lcd_gotoxy(0,0);
lcd_putsf("Lab. Fisika");
lcd_gotoxy(0,1);
lcd_putsf("FKIP-UNTAD");
delay_ms(100);
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf("Pesawat");
lcd_gotoxy(0,1);
lcd_putsf("Atwood");
delay_ms(100);
lcd_clear();
while (1)
{
detek_tombol();
tampil_lcd2();
};
}