ACD Atmega16 PortA als Eingang 0x00 setzen

#define F_CPU  4000000UL

#include <avr/io.h>

#include <stdio.h>

#include <avr/interrupt.h>

#include <util/delay.h>

int main(void)

{

  DDRB = 0xFF;

  unsigned char i;

  LCD_init();

  //Configure ADC

  //Enable interrupts function in ADC

  //8-Bit or 10-Bit results

  //1,000,000/50,000 =100/5=20 1,000,000/200,000 = 10/2 =5

  ADCSRA |= 1<<ADPS2;

  ADMUX |= 1<<ADLAR;

  ADCSRA |= 1<<ADIE;

  ADMUX |= 1<<REFS0;

  //Enable a prescaler-determine by the internal/external clock

  //Turn on the ADC feature

  ADCSAR |= 1<<ADEN;

  //Enable the global interrupts

  sei();

  //Start the first conversion

  ADCSRA |= 1<<ADSC;

  while(1)

  {

    //for(i=0;i<2;i++)

    LCD_blink();

    //PORTB = 0xFF;

    //_delay_us(1000);

    //PORTB = 0x00;

    //_delay_us(1000);

    //for(i=0;i<15;i++)

    //LCD_scroll(0);

    //for(i=0;i<4;i++)

    //LCD_scroll(1);

    //for(i=0;i<2;i++)

    //LCD_scroll(0);

  }

}

// Add the interrupt routine and display the results

ISR(ADC_vect)

{

  //LCD String variable declaration

  char adcResult[4];

  itoa(ADCH, adcResult, 10);

  //Convert the ADC Conversion result

  //Select a location on the LCD to display the number

  LCD_goto(1,1);

  //Display the string on the LCD

  //LCD_send_string(adcResult);

  LCD_send_command(adcResult);    

  ADCSRA |= 1<<ADSC;

}

void LCD_init()

{

  LCD_CNTRL_DDR = 0xFF;

  LCD_CNTRL_PORT = 0x00;

  LCD_DATA_DDR = 0xFF;

  LCD_DATA_PORT = 0x00;

  _delay_ms(50);

  //LCD_send_command(0x38);

  //LCD_send_command(0x0C);

  LCD_send_command(0x01);

  //LCD_send_command(0x0E);

  _delay_ms(1000);

  LCD_send_command(0x14);

  LCD_send_command(0x0F);

  //LCD_send_command(0x01);

   //_delay_ms(10);

  LCD_send_command(0xFF);

  //LCD_send_command(0x06);

}

void LCD_goto(unsigned char y, unsigned char x)

{

  unsigned char firstAddress[] = {0x80,0xC0,0x94,0xD4};

  LCD_send_command(firstAddress[y-1] + x-1);

  _delay_ms(10);

}