HI
code software LM35
#include <mega16.h>
#include <stdio.h>
#include <delay.h>
#asm
.equ __lcd_port=0x18 ;PORTB
#endasm
#include <lcd.h>
#define Up PIND.0
#define Down PIND.1
#define Enter PIND.2
#define high_LED PORTA.1
unsigned char compare=0,set=0xff;
float temp;
//__________________________________________
void display(){
char lcd_buf[32];
sprintf(lcd_buf,”Temp=%3.1fxdfCnHigh Temp=%i”,temp,compare);
lcd_clear();
lcd_gotoxy(0,0);
lcd_puts(lcd_buf);
lcd_gotoxy(13,1);
if(high_LED==1) lcd_putsf(“on “);
if(high_LED==0) lcd_putsf(“off”);
}
//_________________________________________
interrupt [ADC_INT] void adc_isr(void){
unsigned int adc_data;
adc_data=ADCW;
temp=adc_data*2.56/1024;
temp=temp*100;
if(temp>=set) high_LED=1;
else high_LED=0;
}
//_________________________________________up
void inc_set_temp(){
if(compare<99) compare++;
}
//__________________________________________Down
void dec_set_temp(){
if(compare!=0) compare–;
}
//__________________________________________
void main(){
PORTD=0XFF;
DDRD=0X00;
PORTA.1=0;
DDRA.1=1;
ACSR=0XC0;
SFIOR=0X00;
ADMUX=0XC0;
ADCSRA=0X8F;
lcd_init(16);
#asm(“sei”)
ADCSRA=0XCF;
while(1){
display();
delay_ms(250);
ADCSRA=0XCF;
if(Up==0) inc_set_temp();
if(Down==0) dec_set_temp();
if(Enter==0) set=compare;
};
}