uint8_t twi_repeated_start(uint8_t address, uint8_t r_w)
{
	TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
	while (!(TWCR & (1<<TWINT)));

	if ((TWSR & 0xF8) != TW_REP_START)
	{
		return 1; 
	}	
	
	TWDR = ((address << 1) | r_w); 
	TWCR = (1<<TWINT) | (1<<TWEN); 
	
	while (!(TWCR & (1<<TWINT))); 	
		
	uint8_t STATUS_CODE = (TWSR & 0xF8);
	if ((STATUS_CODE != TW_MT_SLA_ACK) && (STATUS_CODE!= TW_MR_SLA_ACK)) 
	{
		return 1; 
	}
	
	else return 0; 
}