void ADC_Init(){

DDRC = 0x00; /* Make ADC port as input */

ADCSRA = (1<<ADEN)|(1<<ADPS2)|(1<<ADPS1)|(1<< ADPS0);

/* Enable ADC, with freq/128 */

ADMUX = (1<<REFS0); /* Vref: Avcc, ADC channel: 0 */

}

int ADC_Read(char channel)

{

ADMUX = 0x40 | (channel & 0x07); // set input channel to read

ADCSRA |= (1<<ADSC); // Start ADC conversion

while (!(ADCSRA & (1<<ADIF)));
// Wait until end of conversion by polling ADC interrupt flag

ADCSRA |= (1<<ADIF); // Clear interrupt flag

_delay_ms(1); // Wait a little bit

return ADCW; // Return ADC word

}

int main()

{

char Voltage[10];

float volt;

while (1) {

volt = (ADC_Read(0)*0.0488);

volt = (volt/10.00);

_delay_ms(10);

}}