Chip type               : ATmega16A 
Program type            : Application 
AVR Core Clock frequency: 8.000000 MHz 
Memory model            : Small 
External RAM size       : 0 
Data Stack size         : 256 
***********/ 
 
#include <mega16a.h> 
 
#include <delay.h> 
 
// Declare your global variables here 
int x; 
 
// Standard Input/Output functions 
#include <stdio.h> 
 
// Voltage Reference: AVCC pin 
#define ADC_VREF_TYPE ((0<<REFS1) | (1<<REFS0) | (1<<ADLAR)) 
 
// Read the 8 most significant bits 
// of the AD conversion result 
unsigned char 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 ADCH; 
} 
 
void main(void) 
{ 
// 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); 
 
// Timer/Counter 0 initialization 
// Clock source: System Clock 
// Clock value: Timer 0 Stopped 
// Mode: Normal top=0xFF 
// OC0 output: Disconnected 
TCCR0=(0<<WGM00) | (0<<COM01) | (0<<COM00) | (0<<WGM01) | (0<<CS02) | (0<<CS01) | (0<<CS00); 
TCNT0=0x00; 
OCR0=0x00; 
 
// Timer/Counter 1 initialization 
// Clock source: System Clock 
// Clock value: Timer1 Stopped 
// Mode: Normal top=0xFFFF 
// OC1A output: Disconnected 
// OC1B output: Disconnected 
// 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=(0<<COM1A1) | (0<<COM1A0) | (0<<COM1B1) | (0<<COM1B0) | (0<<WGM11) | (0<<WGM10); 
TCCR1B=(0<<ICNC1) | (0<<ICES1) | (0<<WGM13) | (0<<WGM12) | (0<<CS12) | (0<<CS11) | (0<<CS10); 
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=0xFF 
// OC2 output: Disconnected 
ASSR=0<<AS2; 
TCCR2=(0<<PWM2) | (0<<COM21) | (0<<COM20) | (0<<CTC2) | (0<<CS22) | (0<<CS21) | (0<<CS20); 
TCNT2=0x00; 
OCR2=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); 
 
// External Interrupt(s) initialization 
// INT0: Off 
// INT1: Off 
// INT2: Off 
MCUCR=(0<<ISC11)
?
| (0<<ISC10) | (0<<ISC01) | (0<<ISC00); 
MCUCSR=(0<<ISC2); 
 
// USART initialization 
// Communication Parameters: 8 Data, 1 Stop, No Parity 
// USART Receiver: Off 
// USART Transmitter: On 
// USART Mode: Asynchronous 
// USART Baud Rate: 2400 
UCSRA=(0<<RXC) | (0<<TXC) | (0<<UDRE) | (0<<FE) | (0<<DOR) | (0<<UPE) | (0<<U2X) | (0<<MPCM); 
UCSRB=(0<<RXCIE) | (0<<TXCIE) | (0<<UDRIE) | (0<<RXEN) | (1<<TXEN) | (0<<UCSZ2) | (0<<RXB8) | (0<<TXB8); 
UCSRC=(1<<URSEL) | (0<<UMSEL) | (0<<UPM1) | (0<<UPM0) | (0<<USBS) | (1<<UCSZ1) | (1<<UCSZ0) | (0<<UCPOL); 
UBRRH=0x00; 
UBRRL=0xCF; 
 
// Analog Comparator initialization 
// Analog Comparator: Off 
// The Analog Comparator's positive input is 
// connected to the AIN0 pin 
// The Analog Comparator's negative input is 
// connected to the AIN1 pin 
ACSR=(1<<ACD) | (0<<ACBG) | (0<<ACO) | (0<<ACI) | (0<<ACIE) | (0<<ACIC) | (0<<ACIS1) | (0<<ACIS0); 
 
// ADC initialization 
// ADC Clock frequency: 1000.000 kHz 
// ADC Voltage Reference: AVCC pin 
// ADC Auto Trigger Source: ADC Stopped 
// Only the 8 most significant bits of 
// the AD conversion result are used 
ADMUX=ADC_VREF_TYPE; 
ADCSRA=(1<<ADEN) | (0<<ADSC) | (0<<ADATE) | (0<<ADIF) | (0<<ADIE) | (0<<ADPS2) | (1<<ADPS1) | (1<<ADPS0); 
SFIOR=(0<<ADTS2) | (0<<ADTS1) | (0<<ADTS0); 
 
// SPI initialization 
// SPI disabled 
SPCR=(0<<SPIE) | (0<<SPE) | (0<<DORD) | (0<<MSTR) | (0<<CPOL) | (0<<CPHA) | (0<<SPR1) | (0<<SPR0); 
 
// TWI initialization 
// TWI disabled 
TWCR=(0<<TWEA) | (0<<TWSTA) | (0<<TWSTO) | (0<<TWEN) | (0<<TWIE); 
 
      printf("%d\r\n",100); 
      delay_ms(250); 
      printf("%d\r\n",100); 
      delay_ms(250); 
      printf("%d\r\n",100); 
      delay_ms(250); 
      printf("%d\r\n",15); 
      delay_ms(250); 
      printf("%d\r\n",15); 
      delay_ms(250); 
      printf("%d\r\n",15); 
      delay_ms(250); 
      printf("%d\r\n",83); 
      delay_ms(250); 
      printf("%d\r\n",83); 
      delay_ms(250); 
      printf("%d\r\n",83); 
      delay_ms(250);  
      printf("%d\r\n",105); 
      delay_ms(250); 
      printf("%d\r\n",105); 
      delay_ms(250); 
      printf("%d\r\n",105); 
      delay_ms(250); 
      printf("%d\r\n",67); 
      delay_ms(250); 
      printf("%d\r\n",67); 
      delay_ms(250); 
      printf("%d\r\n",67); 
      delay_ms(250); 
 
while (1) 
      { 
      // Place your code here      
      x=read_adc(0); 
      delay_ms(100);  
      printf("%d\r\n",x); 
       
 
      } 
}