GccApplication1.cpp

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#define F_CPU 16000000UL
#include <avr/io.h>
#include <stdlib.h>
#include <avr/interrupt.h>
#include <util/delay.h>
extern "C" {
    #include "lcd-routines.h"
}

#define DEBUGCYCLETIME 5000 //In ms

void setup();   //Setup IO Registers
void LCD_WRITE(const char buffer[16]);  //Write in the first Line of the LCD Display from left to right

int main(void)
{
    //LCD_WRITE("Started");
    //_delay_ms(3000); //Time for reading the Message
        
    setup();
    
    while (1)
    {
        //do nothing
        volatile int i; i++; //dummy
    }
}

void setup()
{
    //LCD_WRITE("Setup");
    //_delay_ms(1); //Time for reading the Message
    
    DDRB = 0;
    PORTB = 0;
    DDRC = 0;
    PORTC = 0;
    DDRD = _BV(6);    //Led pin as Output
    PORTD = 0;
    
    //setup LCD
    //lcd_init();
    //              LCD Pins are defined in lcd-routines.h
        
    //setup PWM Module
    TCCR0A |= _BV(WGM01) | _BV(WGM00); TCCR0B |= _BV(WGM02);//Fast PWM
    TCCR0A |= _BV(COM0A1); //Non-Inverting mode
    TCCR0B |= _BV(CS01); //Prescaler
    TIMSK0 |=  _BV(OCIE0A)| _BV(TOIE0); //just for fun
    
    
    
    //setup ADC:
    
    ADCSRA |=_BV(ADEN); //enable ADC
    ADMUX |= _BV(REFS0) | _BV(ADLAR); //Reverence Voltage
    ADCSRA |= _BV(ADPS2); //Prescaler & ENABLE
    ADCSRA |= _BV(ADIE); //Enable conversion finnished Interrupt
    //ADCSRA |= _BV(ADATE); //free running mode
    
    //start PWM Module
    ADCSRA |= _BV(ADSC); //start first Conversion
    sei(); 
}

ISR(ADC_vect)
{
    OCR0A = ADCH; //set value in PWM Module
    OCR0A = 55;   // simulation only
    //LCD_WRITE("ADC_ISR");
    
    //_delay_ms(DEBUGCYCLETIME);
    ADCSRA |= _BV(ADSC); //start next Conversion
    sei();
}

void LCD_WRITE(const char buffer[16])
{
    lcd_clear();
    lcd_home();
    lcd_string(buffer);
}
ISR(TIMER0_COMPA_vect)
{
    volatile int i; i++; //dummy
    
}
ISR(TIMER0_OVF_vect)
{
    volatile int i; i++; //dummy
    
}