Chain Oiler - ATtiny24/44/84 - tomko222

/*
Chain oiler - tomko222
attiny24/44/84
PA0 - switch
PA1, PA2, PA3 - LEDs
PA7 - valve
*/
#define F_CPU 1000000L
#include <avr/io.h>
#include <util/delay.h>
#include <avr/eeprom.h>
#include <avr/interrupt.h>
void delay(int time);
void ledBlink(int cont);
struct mode
{
    volatile int wait_time;
    volatile int open_time;
};
//modes - temp values!!!
struct mode modeLow = {.wait_time = 60, .open_time = 5};
struct mode modeMid = {.wait_time = 45, .open_time = 7};
struct mode modeHigh = {.wait_time = 30, .open_time = 10};
volatile struct mode* currentModeP;
int volatile modeNumber = 0;//0 - off, 1 - modeLow, 2 - modeMid, 3 - modeHigh
int volatile initializationFinished = 0;
void setCurrentMode(int number);
void init();
int buttonPushed = 0;

void init()
{
    DDRA |= _BV(1) |_BV(2) |_BV(3);//LEDs - out
    DDRA &= ~_BV(0);//PA0 (INT0) - switch - in
    DDRA |= _BV(7);//valve - out

    //interrupts
    GIMSK |= (1 << PCIE0);
    PCMSK0 = (1<<PCINT0);
    sei();

    ledBlink(3);
    initializationFinished = 1;
}

int main()
{
    initializationFinished = 0;
    init();

    while(1)
    {
        if(modeNumber > 0 && modeNumber <= 3)
        {
            delay((*currentModeP).wait_time);//wait wait_time
            PORTA |= _BV(7);//open
            delay((*currentModeP).open_time);//wait open_time
            PORTA &= ~_BV(7);//close
        }else {
            PORTA &= ~_BV(7);//close
        }
    }

    return 0;
}

ISR(PCINT0_vect)
{
    if(!buttonPushed)
        buttonPushed = 1;
    else
        buttonPushed = 0;

    if(initializationFinished == 1)
    {
        PORTA &= ~_BV(7);
        if(buttonPushed)
        {
            if(modeNumber >= 0 && modeNumber < 3)
            {
                setCurrentMode(++modeNumber);
            }else if(modeNumber == 3)
            {
                setCurrentMode(0);
            }
        }
    }
}

void delay(int time)
{
    while(time--)
       _delay_ms(100);
}

void ledBlink(int count)
{
    for(; count; count--)
    {
        _delay_ms(300);
        PORTA &= ~_BV(1) & ~_BV(2) & ~_BV(3);//turn on
        _delay_ms(300);
        PORTA |= _BV(1) |_BV(2) |_BV(3);//turn off

    }
}

void setCurrentMode(int number)
{
    if(number >=0 && number <=4)
    {
        if(number == 0)
        {
            PORTA &= ~_BV(7);
            modeNumber = 0;
            //LEDs
            PORTA |= _BV(1) |_BV(2) |_BV(3);

        }else if(number == 1)
        {
            modeNumber = 1;
            currentModeP = &modeLow;
            //LEDs
            PORTA |= _BV(2) |_BV(3);
            PORTA &= ~_BV(1);
        }else if(number == 2)
        {
            modeNumber = 2;
            currentModeP = &modeMid;
            //LEDs
            PORTA |= _BV(1) |_BV(3);
            PORTA &= ~_BV(2);
        }else if(number == 3)
        {
            modeNumber = 3;
            currentModeP = &modeHigh;
            //LEDs
            PORTA |= _BV(1) |_BV(2);
            PORTA &= ~_BV(3);
        }
    }
}