#ifndef I2C_H
#define I2C_H	          
//=============================================================================
// define macros
//=============================================================================
//= Править здесь =============================================================
#define I2C_SDA_PORT	  PORTC	
#define SDA_PIN 	      PC1	    
#define I2C_SCL_PORT	  PORTC	    
#define SCL_PIN 	      PC0	    
// ============================================================================
#define I2C_SDA_OUT_REG   PORTC
#define I2C_SCL_OUT_REG   PORTC
#define I2C_SDA_DDR_REG   DDRC
#define I2C_SCL_DDR_REG   DDRC
#define I2C_SDA_PIN_REG   PINC
#define I2C_SCL_PIN_REG   PINC
#define SCL_1()   I2C_SCL_DDR_REG &= ~(1<<SCL_PIN)
#define SCL_0()   I2C_SCL_DDR_REG |= (1<<SCL_PIN)
#define SDA_1()   I2C_SDA_DDR_REG &= ~(1<<SDA_PIN)
#define SDA_0()   I2C_SDA_DDR_REG |= (1<<SDA_PIN)
#define RELEASE_I2C_BUS() { SCL_1(); SDA_1(); }
// ============================================================================
#define I2C_DELAY	   ( (I2C_DELAY_TIME * (F_CPU / 60000)) / 100 )  
#define I2C_TIMEOUT	   ( (I2C_TIMEOUT_TIME * (F_CPU / 60000)) / 100 ) 
#define I2C_DELAY_TIME	  				 5	    
#define I2C_TIMEOUT_TIME  				 1000	
#define I2C_READ	 	  				 1
#define I2C_WRITE	      				 0
#define I2C_QUIT	      				 0
#define I2C_CONTINUE      				 1
#define I2C_NO_ERROR      				 0
#define I2C_ERROR_DEVICE_BUSY			 1
#define I2C_ERROR_DEVICE_NOT_RESPONDING  2
#define I2C_ASK                          1
#define I2C_NOASK                        0
// Functions prototype
void delay(unsigned long us);
void I2C_init (void);
void I2C_start (void);
unsigned char I2C_write (unsigned char data);
void I2C_stop (void);
unsigned char I2C_read (unsigned char ack);
#endif