#include <stdlib.h>
#include <mega8.h>
#include <delay.h>
#include <alcd.h>
#include <LM35.h>
#define ADC_VREF_TYPE ((0<<REFS1) | (1<<REFS0) | (0<<ADLAR))

float celcius; char bf[20];

// Read the AD conversion result
unsigned int read_adc(unsigned char adc_input)
{
ADMUX=adc_input | ADC_VREF_TYPE;
// Delay needed for the stabilization of the ADC input voltage
delay_us(10);
// Start the AD conversion
ADCSRA|=(1<<ADSC);
// Wait for the AD conversion to complete
while ((ADCSRA & (1<<ADIF))==0);
ADCSRA|=(1<<ADIF);
return ADCW;
}

void main(void)
{
//DDRB = 0xff;
//DDRD |= (1<<PORTD.7);
// ADC initialization
// ADC Clock frequency: 125,000 kHz
// ADC Voltage Reference: AVCC pin
ADMUX=ADC_VREF_TYPE;
ADCSRA=(1<<ADEN) | (0<<ADSC) | (0<<ADFR) | (0<<ADIF) | (0<<ADIE) | (1<<ADPS2) | (0<<ADPS1) | (1<<ADPS0);
SFIOR=(0<<ACME);

// 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 - PORTB Bit 3
// D5 - PORTB Bit 4
// D6 - PORTB Bit 5
// D7 - PORTD Bit 7
// Characters/line: 16
lcd_init(16);

while (1)
      {
      celcius=LM35_C(0);
      ftoa(celcius,1,bf);
      lcd_puts("Temp = ");
      lcd_gotoxy(0,1);
      lcd_puts(bf);
      lcd_gotoxy(5,1);
      lcd_putchar('C');
      delay_ms(500);
      lcd_clear();
      }
}