main.h

HT单片机模拟I2C通讯

#ifndef MAIN_H
#define MAIN_H

#define uint8		unsigned char
//#define uint8		unsigned int
//#define sint8		short int
//#define usint8	unsigned short int
#define uint16		unsigned long

#define	CLI()		_emi=0				/*关中断*/
#define SEI()		_emi=1				/*开中断*/

#define I2C_SCL		_pb3				/*I2C时钟线*/
#define I2C_SDA		_pd0				/*I2C数据线*/
#define SCL_IN()	_pbc |= 0x08		/*设置SCL为输入*/
#define SCL_OUT()	_pbc &= 0xf7		/*设置SCL为输出*/
#define SDA_IN()	_pdc |= 0x01		/*设置SDA为输入*/
#define SDA_OUT()	_pdc &= 0xfe		/*设置SDA为输出*/

#endif