سلام خدمت دوستان و اساتید محترم این برنامه رو برای سنسور ds18b20 نوشتم ولی موقع خوندن دما مقدار صفر برمی گردونه کسی می تونه کمک کنه؟
#include <mega16.h>
#include <delay.h>
#include <stdio.h>
#include <ds18b20.h>
// 1 Wire Bus functions
#asm
.equ __w1_port=0x1B ;PORTA
.equ __w1_bit=0
#endasm
#include <1wire.h>
// Alphanumeric LCD Module functions
#asm
.equ __lcd_port=0x15 ;PORTC
#endasm
#include <lcd.h>
#define MAX_DEVICES 8
// Declare your global variables here
unsigned char rom_codes[MAX_DEVICES][9];
char str[];
void main(void)
{
// Declare your local variables here
unsigned char i,j,devices;
// 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=T State0=T
PORTB=0x00;
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=FFh
// OC0 output: Disconnected
TCCR0=0x00;
TCNT0=0x00;
OCR0=0x00;
// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer1 Stopped
// Mode: Normal top=FFFFh
// 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=FFh
// 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;
// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;
// 1 Wire Bus initialization
w1_init();
// LCD module initialization
lcd_init(16);
devices=w1_search(0xf0,rom_codes);
sprintf(str,"DEVICE(S) %d DETECTED",devices);//پیدا کردن سنسور ها
lcd_puts(str);
delay_ms(1000);
lcd_clear();
if (ds18b20_init(NULL,0,150,DS18B20_12BIT_RES))//مقدار دهی اولیه
{
lcd_putsf("OK"
;
lcd_clear();
}
else
{
lcd_putsf("NOT ready"
;
while(1);
}
while (1)
{
// Place your code here //
sprintf(str,"%d c",ds18b20_temperature(NULL)); // خواندن دما
lcd_puts(str);
delay_ms(1000);
lcd_clear();
};
}
ممنون می شم کمکم کنین
اینم مدارم : Madar.JPG
اینم کدش تو کد ویژن : 1.c
#include <mega16.h>
#include <delay.h>
#include <stdio.h>
#include <ds18b20.h>
// 1 Wire Bus functions
#asm
.equ __w1_port=0x1B ;PORTA
.equ __w1_bit=0
#endasm
#include <1wire.h>
// Alphanumeric LCD Module functions
#asm
.equ __lcd_port=0x15 ;PORTC
#endasm
#include <lcd.h>
#define MAX_DEVICES 8
// Declare your global variables here
unsigned char rom_codes[MAX_DEVICES][9];
char str[];
void main(void)
{
// Declare your local variables here
unsigned char i,j,devices;
// 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=T State0=T
PORTB=0x00;
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=FFh
// OC0 output: Disconnected
TCCR0=0x00;
TCNT0=0x00;
OCR0=0x00;
// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer1 Stopped
// Mode: Normal top=FFFFh
// 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=FFh
// 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;
// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;
// 1 Wire Bus initialization
w1_init();
// LCD module initialization
lcd_init(16);
devices=w1_search(0xf0,rom_codes);
sprintf(str,"DEVICE(S) %d DETECTED",devices);//پیدا کردن سنسور ها
lcd_puts(str);
delay_ms(1000);
lcd_clear();
if (ds18b20_init(NULL,0,150,DS18B20_12BIT_RES))//مقدار دهی اولیه
{
lcd_putsf("OK"

lcd_clear();
}
else
{
lcd_putsf("NOT ready"

while(1);
}
while (1)
{
// Place your code here //
sprintf(str,"%d c",ds18b20_temperature(NULL)); // خواندن دما
lcd_puts(str);
delay_ms(1000);
lcd_clear();
};
}
ممنون می شم کمکم کنین
اینم مدارم : Madar.JPG
اینم کدش تو کد ویژن : 1.c
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