i2c.h

用AVR控制旭光高频头JS-6B1/111程序.

#ifndef __I2C_H_
#define __I2C_H_

#define I2C_PORT PORTD
#define I2C_PIN	PIND
#define I2C_DDR DDRD
#define SDA 7
#define SCL 5

#define SDA_H I2C_PORT|=(1<<SDA)
#define SDA_L I2C_PORT&=~(1<<SDA)

#define SCL_H I2C_PORT|=(1<<SCL)
#define SCL_L I2C_PORT&=~(1<<SCL)

//#define ACK_FAIL I2C_PIN&(1<<SDA)
//#define SDA_HIGH I2C_PIN&(1<<SDA)
#define ACK_FAIL (I2C_PIN>>SDA)&0x01
#define SDA_HIGH (I2C_PIN>>SDA)&0x01


extern void Start_I2C(void);
extern void Stop_I2C(void);
extern void Ack_I2C(unsigned char a);
extern void SendByte(unsigned char c);
extern unsigned char ReceiveByte(void);

#endif