Ошибки в коде

#include <io.h>
#include <interrupt.h>
#include <eeprom.h>
#include <sleep.h>
#include <delay.h>
 
// the number of light states
#define NSTATES 4
// for when no key is pressed
#define KEY_NONE '@'
 
// stateDurations0 in eeprom, read on reset, written on change by user
const unsigned stateDurations0[NSTATES]  = {3, 1, 3, 1};
// state durations
unsigned stateDurations[NSTATES];
// light states, one hex digit per lights set
const unsigned lightStates[NSTATES] = {0x41, 0x23, 0x14, 0x32};
// current lights state
int state = 0;
// seconds left for state change
int secondsLeft = 3;
// bool, set by timer interrupt, read and cleared in main loop
int inputMode = 0;
 
// for keyboard debouncing
void ShortDelay()
{
    _delay_ms(15);
}
 
// returns a pressed key code (digit, ascii '*' or '#') or KEY_NONE
char ReadKey()
{
    static const char keyCodes[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, '*', 0, '#'};
    for (unsigned col = 0, colMask = 1; col < 3; col++, colMask <<= 1)
    {
        PORTA = ~colMask;
        for (unsigned row = 0, rowMask = 1; row < 4; row++, rowMask <<= 1)
            if (!(PINC & rowMask))
                return keyCodes[row * 3 + col];
    }
    return KEY_NONE;
}
 
char WaitAndReadKey()
{
    char key;
    while ((key = ReadKey()) == KEY_NONE)
        ;
    return key;
}
 
void WaitForKeyUp()
{
    while (ReadKey() != KEY_NONE)
        ;
}
 
ISR(TIMER1_COMPA_vect)
{
    if (ReadKey() == '*')
        inputMode = 1;
    if (--secondsLeft == 0)
    {
        if (++state == NSTATES)
            state = 0;
        secondsLeft = stateDurations[state];
    }
    // lights
    PORTD = lightStates[state];
    // indicators
    PORTB = secondsLeft / 10 << 4 | secondsLeft % 10;
}
 
int main(void)
{
    // Disable stuff to reduce power consumption
    ACSR |= 1 << ACD;
    // load state durations
    eeprom_read_block(stateDurations, stateDurations0, sizeof(stateDurations));
    secondsLeft = stateDurations[0];
    // output to lights
    DDRD = 0xff;
    // output to indicators
    DDRB = 0xff;
    // output to keypad
    DDRA = 0x0f;
    // input from keypad, enable pull-ups for all pins
    PORTC = 0xff;
    DDRC = 0x00;
    // timer1: clk/1024, clear on compare
    // make sure F_CPU is right
    // multiply by 8 if prescaler is disabled
    OCR1A = (F_CPU + 0.5) / 1024;
    TCCR1B = 1 << WGM12 | 1 << CS12 | 0 << CS11 | 1 << CS10;
    TIMSK1 = 1 << OCIE1A;
    sei();
    while (1)
    {
        if (!inputMode)
        {
            // idle mode, io clock is still active
            set_sleep_mode(SLEEP_MODE_IDLE);
            sleep_mode();
            continue;
        }
        // light durations input mode
        cli();
        // '*' is probably still pressed, though may not be
        WaitForKeyUp();
        ShortDelay();
        for (unsigned curState = 0; curState < NSTATES; curState++)
        {
            // show current state on indicator
            PORTB = curState;
            int newDuration = 0;
            for (unsigned i = 0; i < 2; i++)
            {
                char key = WaitAndReadKey();
                // ignore non-digit keys
                if (key >= 0 && key < 10)
                    newDuration = newDuration * 10 + key;
                ShortDelay();
                WaitForKeyUp();
                ShortDelay();
            }
            stateDurations[curState] = newDuration;
        }
        // update durations in eeprom
        // for some reason src is first in WinAVR, ignore warning!
        eeprom_write_block(stateDurations, stateDurations0, sizeof(stateDurations));
        inputMode = 0;
        // start from state 0
        state = 0;
        secondsLeft = stateDurations[0];
        sei();
    }
    // just for the sake of it
    return 0;
}