پروژه راه اندازی سنسور دما SMT172 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>
// Declare your global variables here
char apply_rising=1;
unsigned long int t0_ovf=0;
unsigned long int high_time=0;
unsigned long int low_time=0;
unsigned char temp[30];
// External Interrupt 1 service routine
interrupt [EXT_INT1] void ext_int1_isr(void)
{
// Place your code here
TCCR0=0;
if(apply_rising==1)
{
low_time=t0_ovf*256+TCNT0;
// INT1 Mode: Falling Edge
MCUCR=(1<<ISC11) | (0<<ISC10) | (0<<ISC01) | (0<<ISC00);
apply_rising=0;
}
else
{
high_time=t0_ovf*256+TCNT0;
// INT1 Mode: Rising Edge
MCUCR=(1<<ISC11) | (1<<ISC10) | (0<<ISC01) | (0<<ISC00);
apply_rising=1;
}
TCNT0=0x00;
t0_ovf=0;
TCCR0=(0<<WGM00) | (0<<COM01) | (0<<COM00) | (0<<WGM01) | (0<<CS02) | (1<<CS01) | (1<<CS00);
}
// Timer 0 overflow interrupt service routine
interrupt [TIM0_OVF] void timer0_ovf_isr(void)
{
// Place your code here
t0_ovf++;
}
void main(void)
{
float temprature,dutycycle;
// 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) | (0<<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);
// External Interrupt(s) initialization
// INT0: Off
// INT1: On
// INT1 Mode: Rising Edge
// INT2: Off
GICR|=(1<<INT1) | (0<<INT0) | (0<<INT2);
MCUCR=(1<<ISC11) | (1<<ISC10) | (0<<ISC01) | (0<<ISC00);
MCUCSR=(0<<ISC2);
GIFR=(1<<INTF1) | (0<<INTF0) | (0<<INTF2);
// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: 250.000 kHz
// Mode: Normal top=0xFF
// OC0 output: Disconnected
// Timer Period: 1.024 ms
TCCR0=(0<<WGM00) | (0<<COM01) | (0<<COM00) | (0<<WGM01) | (0<<CS02) | (1<<CS01) | (1<<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) | (0<<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);
// Global enable interrupts
#asm("sei")
lcd_clear();
lcd_putsf(" HI Welcom");
delay_ms(2000);
while (1)
{
lcd_clear();
lcd_putsf("www.redronic.com");
#asm("cli");
dutycycle=(float)high_time/(float)(high_time+low_time); //calculate D.C
#asm("sei");
temprature=dutycycle*212.77-68.085;
ftoa(temprature,0,temp);
lcd_gotoxy( 0 ,1);
lcd_putsf("SMT172:");
lcd_gotoxy(9 ,1);
lcd_puts(temp);
lcd_gotoxy(12,1);
lcd_putsf("C");
delay_ms(5000);
//lcd_clear();
// Place your code here
}
}
}