#define F_CPU 8000000UL
#include <avr/io.h>
#include <util/delay.h>
#include <stdlib.h>
#include <inttypes.h>
#include <avr/pgmspace.h>
#include <string.h>
#define RS PB1
#define E PB0
#define LCD_RS_SIGNAL	      0 	      //PD0 pin37 of uC to LCD RS - pin 4 of LCD
#define LCD_RW_SIGNAL	      1 	      //PD1 pin36 of uC (don't connect) to LCD R/W - currently grounded
#define LCD_ENABLE_SIGNAL     2  	      //PD2 pin36 of uC to LCD E - pin 6 of LCD
#define LCD_C4_SIGNAL	      4	              //PC4 pin33 of uC to LCD D3 - pin 11 of LCD
#define LCD_C5_SIGNAL	      5	              //PC5 pin32 of uC  to LCD D4 - pin 12 of LCD
#define LCD_C6_SIGNAL	      6	              //PC6 pin31 of uC to LCD D5 - pin 13 of LCD
#define LCD_C7_SIGNAL	      7	              //PC7 pin30 of uC to LCD D6 - pin 14 of LCD

#define LCD_dir DDRB
#define LCD_Port PORTB




void LCDcmd(unsigned char cmd) // command mode
{
	LCD_Port =(LCD_Port&0x0f)|(cmd&0xf0); // set the first 4 high bit to LCDport
	LCD_Port &=~(1<<RS);
	LCD_Port |=(1<<E);
	_delay_us(1);
	LCD_Port&=~(1<<E);
	
	_delay_us(200);
	
	LCD_Port =(LCD_Port&0x0f)|(cmd<<4); // set the first 4 low bit to LCDport
	LCD_Port |=(1<<E);
	_delay_us(1);
	LCD_Port&=~(1<<E);
	_delay_ms(2);
	
}

void LCDchar(unsigned char data) //send data
{
	LCD_Port =(LCD_Port&0x0f)|(data&0xf0); // set the first 4 high bit of data to LCDport
	LCD_Port |=(1<<RS);
	LCD_Port |=(1<<E);
	_delay_us(1);
	LCD_Port&=~(1<<E);
	
	_delay_us(200);
	
	LCD_Port =(LCD_Port&0x0f)|(data<<4); // set the first 4 low bit to LCDport
	LCD_Port |=(1<<E);
	_delay_us(1);
	LCD_Port&=~(1<<E);
	_delay_ms(2);
	
	
}

void LCD_string(char *s, int LCD_line, int LCD_cursor_position)
{
	if(LCD_line==1)
	LCDcmd(0x80+LCD_cursor_position);
	else LCDcmd(0xc0+LCD_cursor_position);
	while (*s)
	LCDchar(*s++);
}

void LCD_cursor_blink()
{
	LCDcmd(0x0f);
}

void LCD_float_string(float LCD_number, int LCD_line, int LCD_cursor_position)
{
	char buffer_LCD[13];
	dtostre(LCD_number, buffer_LCD,5, 4);
	LCD_string(buffer_LCD,LCD_line,LCD_cursor_position);
	
}

void LCD_int_string(int LCD_number, int LCD_line, int LCD_cursor_position)
{
	char buffer_LCD[10];
	itoa(LCD_number, buffer_LCD, 10);
	LCD_string(buffer_LCD, LCD_line, LCD_cursor_position);
}


void LCDinit()
{
	LCD_dir	=0xff;
	_delay_ms(20);
	LCDcmd(0x33);
	LCDcmd(0x32);
	LCDcmd(0x01);
	LCDcmd(0x28);
	LCDcmd(0x0C);
	LCDcmd(0x06);
	LCDcmd(0x1c);
	_delay_ms(2);
	LCDcmd(0x80);
	
}
void LCD_String (char *str)				/* Send string to LCD function */
{
	//int i;
	//for(i=0;str[i]!=0;i++)				/* Send each char of string till the NULL */
	//{
	//LCDchar (str[i]);
	//}
	while (*str)
	LCDchar(*str++);
}

void LCD_String_xy (char row, char pos, char *str)	/* Send string to LCD with xy position */
{
	if (row == 0 && pos<16)
	LCDcmd((pos & 0x0F)|0x80);		/* Command of first row and required position<16 */
	else if (row == 1 && pos<16)
	LCDcmd((pos & 0x0F)|0xC0);		/* Command of first row and required position<16 */
	LCD_String(str);					/* Call LCD string function */
}
void LCD_clear()
{
	LCDcmd(0x01);
	_delay_ms(2);
	LCDcmd(0x80);
	
}
void LCD_home()
{
	LCDcmd(1<<1);
}
void ADC_init()
{
	DDRA=0x00;
	ADCSRA=0;
	ADCSRA|=(1<<ADPS2)|(1<<ADPS1)|(1<<ADEN)|(1<<ADIE);; //adc clock=freq/64, enable ADC,
	ADMUX|=(0<<REFS1)|(1<<REFS0)|(1<<ADLAR)|(0<<MUX4)|(0<<MUX3)|(0<<MUX0)|(0<<MUX1)|(0<<MUX2); // set pin A0 as analog input
}
int ADC_read()
{
	ADCSRA|=(1<<ADSC);
	while(!(ADCSRA&(1<<ADIF)))
	{
		ADCSRA|=(1<<ADIF);
		_delay_ms(1);
		return ADCW;
	}
}
void T1delay()
{
	TCNT1=0x00;
	OCR1A=3125;
	TCCR1A=0x00;
	TCCR1A|=(1<<WGM01);
	TCCR1B=0x00;
	TCCR1B|=(1<<CS12);
	while((TIFR1&(1<<TOV1))==0);
	TCCR1B=0x00;
	TIFR1|=(1<<TOV1);
}

void port_init(){
	EICRA=0x00;
	DDRD=0x00;
	PORTD|=(1<<PD0);
	EICRA|=(1<<ISC01);
	EIMSK|=(1<<INT0);
}
void init_devices(){
 cli();
 port_init();
 sei();
}
int main()
{
	int value_check =0;
	float time=0;
	//LCDinit();
	//DDRF=0x00;

	while(1){
    

	}
	
}

SIGNAL(INT0_vect, ISR_NOBLOCK){
	init_devices();
	LCDinit();
	int count =0;
	while((EIMSK&(1<<INT0))==1)
	{
		LCD_string("The timer is counting:", 1, 1)
		LCD_int_string(count, 2, 1);
		T1delay();
		count++;
	}


}