i2c.h

I2C总线驱动程序(用两个普通IO模拟I2C总线)

//1 可移植的数据类型
#if 0
typedef	unsigned char uint8;
typedef	unsigned int	uint16;
typedef	unsigned long	uint32;
#define 	bool 		bit
#define 	true 		1
#define 	false 		0
#define	PAGE_SIZE	8
#define 	SomeNOP();	 _nop_();_nop_();_nop_();_nop_();

//1 I/O端口定义
sbit		SDA=P2^7;
sbit		SCL=P2^5;
sbit		WDT=P1^5;
#endif

#ifndef 		TRUE
#define 		TRUE  1
#endif

#ifndef 		FALSE
#define 		FALSE 0
#endif

//1 I2C函数声明
extern	void 	I2CStart(void);
extern	void 	I2CStop(void);
extern	bit		WaitAck(void);
extern	void 	SendAck(void);
extern	void 	SendNotAck(void);
extern	void 	I2CSendByte(uint8 ch);
extern	uint8 	I2CReceiveByte(void);
//extern	void 	GetPCF8563(uint8 firsttype,uint8 count,uint8 *buff);
//extern	void 	SetPCF8563(uint8 timetype,uint8 value);
//extern	void 	SetAlarm(uint8 alarmtype,uint8 count);
//extern	void 	CleanAlarm(void);
//extern	uint8 	read1380 (uint8 command);
//extern	void 	write1380(uint8 command ,uint8 time);
//extern	void 	time_display(uint8 x0,uint8 y0,bit type);		 //液晶时间显示
extern	void 	readEeprom(uint8 chipAddr,uint8 subAddr,uint8 *buff, uint8 n);
extern	void 	writeEeprom(uint8 chipAddr, uint8 subAddr, uint8 *buff, uint8 n);
extern	void 	delay1ms(uint16 n);