iic.h

来自「pcf8565驱动」· C头文件 代码 · 共 23 行

#ifndef _IIC_H_
#define _IIC_H_


#define	RTC_SCL		PE4//时钟
#define	RTC_SDA	PE5//时钟数据
#define	PCF865_R_ADDR	       0xA3
#define	PCF865_W_ADDR 	0xA2
//#define SCL(En)  (En)?(PORTE |=BIT(RTC_SCL)):(PORTE &= ~ BIT(RTC_SCL))
#define SCL(En)  (En)?(PORTE |=0x10):(PORTE &= 0xef)
//#define SDA(En)  (En)?(PORTE |=BIT(RTC_SDA)):(PORTE &= ~ BIT(RTC_SDA))
#define SDA(En)  (En)?(PORTE |=0x20):(PORTE &= 0xdf)
//#define SDA_In()  PINE&BIT(RTC_SDA)
#define SDA_In()  (PINE&0x20)>>5
//#define SDA_Dir(En)  (En)?(DDRE |=BIT(RTC_SDA)):(DDRE &= ~ BIT(RTC_SDA))// 1输入0输出
#define SDA_Dir(En)  (En)?(DDRE |=0x20):(DDRE &= 0xdf)// 1输入0输出

extern void init_I2C(void);
extern void I2C_start(void);
extern void I2C_stop(void);
extern unsigned char   I2C_Receive_Byte(void);
extern unsigned char   I2C_Send_Byte(unsigned char   data);
#endif