#include <avr/io.h>
#define F_CPU 8000000UL
#include <avr/interrupt.h>
#include "LCD.h"



// Senden der Startbedingung (MASTER -> SLAVE)
void twi_start(void)
{
	TWCR =  (1<<TWINT)|(1<<TWSTA) | (1<<TWEN);
	
	
	while((TWCR & (1<<TWINT)))
	{	
		Write_String("Error: TWIstart");
		CurserHome();
		_delay_ms(1000);
	}
	
}

// Senden der Slave-Adresse (MASTER -> Slave)
void twi_addr(uint8_t sla_x)
{
	TWDR = sla_x;
	TWCR = (1<<TWINT) | (1<<TWEN);

	while(!(TWCR & (1<<TWINT)))
	{	
		Write_String("Error:TWIaddr");
		
		CurserHome();
		_delay_ms(1000);
		
	}

}

void twi_start_mit_addr(uint8_t addr)
{
	
	twi_start();
	
	twi_addr(addr);
}

//Senden von Daten (MASTER -> SLAVE)
void twi_send(uint8_t data)
{
	TWDR = data;
	TWCR = (1<<TWINT) | (1<<TWEN);
	while(!(TWCR & (1<<TWINT)))
	{	
		Write_String("Error: TWIsend");
		CurserHome();
		_delay_ms(1000);
	}

}

// Senden der Stoppbedinung
void twi_stop(void)
{
	TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
}

//Emfangen von Daten
uint8_t twi_receive(uint8_t ea)
{
	TWCR = (1<<TWINT) | (1<<TWEN) | (ea<<TWEA);
	Write_Int(TWCR);
	while(!(TWCR & (1<<TWINT)))
	{	
		Write_String("Error: TWIreceive");
		CurserHome();
		_delay_ms(1000);
	}
	return TWDR;

}


int main(void)
{
	LCD_Init();
	
	TWBR = 32;
	
	uint8_t a,b,c,d,e,f;
		
	
	
		twi_start_mit_addr(0xd0);
	
	
	twi_send(0);
	twi_start_mit_addr(0xd1);

	
	a = twi_receive(1);
	
	b = twi_receive(1);
	c = twi_receive(1);
	d = twi_receive(1);
	e = twi_receive(1);
	f = twi_receive(0);
	
	
	twi_stop();
	

	Write_Int(c);
	Write_String(":");

	Write_Int(b);
	Write_String(":");

	Write_Int(a);
	Write_String(" ");

	Write_Int(d);
	Write_String(" ");


	

	
	



	while(1)
	{
		
	}
}