پروژه راه اندازی ماژول سنسور سنجش فاصله GP2D12 با استفاده از مجموعه آموزشی AVR WIZARD توسط برد پلاریس به زبان C

				
					
#include <mega16a.h>
#include <delay.h>
// Alphanumeric LCD functions
#include <alcd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int timer_ovf=0;
float distance=0.0;
char dist_str[20];
// Declare your global variables here
// Timer 0 overflow interrupt service routine
interrupt [TIM0_OVF] void timer0_ovf_isr(void)
{
timer_ovf++;
TCNT0=0;
}
void main(void)
{
// Declare your local variables here
// Input/Output Ports initialization
// Port A initialization
// Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In
DDRA=(0<<DDA7) | (0<<DDA6) | (0<<DDA5) | (0<<DDA4) | (0<<DDA3) | (0<<DDA2) | (1<<DDA1) | (0<<DDA0);
// State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T
PORTA=(0<<PORTA7) | (0<<PORTA6) | (0<<PORTA5) | (0<<PORTA4) | (0<<PORTA3) | (0<<PORTA2) | (0<<PORTA1) | (0<<PORTA0);
// Port B initialization
// Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In
DDRB=(0<<DDB7) | (0<<DDB6) | (0<<DDB5) | (0<<DDB4) | (0<<DDB3) | (0<<DDB2) | (0<<DDB1) | (0<<DDB0);
// State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T
PORTB=(0<<PORTB7) | (0<<PORTB6) | (0<<PORTB5) | (0<<PORTB4) | (0<<PORTB3) | (0<<PORTB2) | (0<<PORTB1) | (0<<PORTB0);
// Port C initialization
// Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In
DDRC=(0<<DDC7) | (0<<DDC6) | (0<<DDC5) | (0<<DDC4) | (0<<DDC3) | (0<<DDC2) | (0<<DDC1) | (0<<DDC0);
// State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T
PORTC=(0<<PORTC7) | (0<<PORTC6) | (0<<PORTC5) | (0<<PORTC4) | (0<<PORTC3) | (0<<PORTC2) | (0<<PORTC1) | (0<<PORTC0);
// Port D initialization
// Function: Bit7=In Bit6=In Bit5=In Bit4=In Bit3=In Bit2=In Bit1=In Bit0=In
DDRD=(0<<DDD7) | (0<<DDD6) | (0<<DDD5) | (0<<DDD4) | (0<<DDD3) | (0<<DDD2) | (0<<DDD1) | (0<<DDD0);
// State: Bit7=T Bit6=T Bit5=T Bit4=T Bit3=T Bit2=T Bit1=T Bit0=T
PORTD=(0<<PORTD7) | (0<<PORTD6) | (0<<PORTD5) | (0<<PORTD4) | (0<<PORTD3) | (0<<PORTD2) | (0<<PORTD1) | (0<<PORTD0);
// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: 2000.000 kHz
// Mode: Normal top=0xFF
// OC0 output: Disconnected
// Timer Period: 0.128 ms
TCCR0=(0<<WGM00) | (0<<COM01) | (0<<COM00) | (0<<WGM01) | (0<<CS02) | (1<<CS01) | (0<<CS00);
TCNT0=0x00;
OCR0=0x00;
// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=(0<<OCIE2) | (0<<TOIE2) | (0<<TICIE1) | (0<<OCIE1A) | (0<<OCIE1B) | (0<<TOIE1) | (0<<OCIE0) | (1<<TOIE0);
// Alphanumeric LCD initialization
// Connections are specified in the
// Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu:
// RS - PORTB Bit 0
// RD - PORTB Bit 1
// EN - PORTB Bit 2
// D4 - PORTA Bit 4
// D5 - PORTA Bit 5
// D6 - PORTA Bit 6
// D7 - PORTA Bit 7
// Characters/line: 16
lcd_init(16);
lcd_clear();
lcd_gotoxy( 0 , 0 );
lcd_putsf( "WWW.REDRONIC.COM" ) ;
delay_ms(2000);
// Global enable interrupts
#asm("sei")
while (1)
{
PORTA.1=1; // set trig pulse
TCNT0= 0;
TCCR0=(0<<WGM00) | (0<<COM01) | (0<<COM00) | (0<<WGM01) | (0<<CS02) | (1<<CS01) | (0<<CS00);
while(TCNT0<20);
PORTA.1=0; //reset trig pulse
TCCR0=0;
while(PINA.2==0); //listen to echo puls
timer_ovf=0;
TCNT0=0;
TCCR0=(0<<WGM00) | (0<<COM01) | (0<<COM00) | (0<<WGM01) | (0<<CS02) | (1<<CS01) | (0<<CS00);
while(PINA.2==1); //listen to echo puls
TCCR0=0;
distance=((timer_ovf*256+TCNT0)/116.62) ; // calculate distance
if(distance>450)
{
//lcd_clear();
lcd_gotoxy(0,1);
lcd_putsf(" ");
lcd_gotoxy(0,1);
lcd_putsf("Out of Range");
delay_ms(500);
}
else
{
//sprintf(dist_str,"Distance = %3.1f cm",distance);
ftoa(distance,1,dist_str);
lcd_gotoxy(0,1);
lcd_putsf("Distance:");
lcd_gotoxy(9,1);
lcd_puts(dist_str);
lcd_gotoxy(14,1);
lcd_putsf("cm");
delay_ms(1000);
lcd_gotoxy(9,1);
lcd_putsf(" ");
}
}
}