clock.h

AVR单片机用C语言编写的包括时钟

//PD0  SCL
//PD1  SDA
#define START  0x08
#define MT_SLA_ACK  0x18
#define MT_DATA_ACK  0x28
#define MR_SLA_ACK  0x40
#define MR_DATA_ACK  0x50
#define BIT0  0x01
#define BIT1  0x02
#define SDA_1       PORTD |=  BIT1              //SDA = 1
#define SDA_0       PORTD &=~ BIT1              //SDA = 0
#define SCL_1       PORTD |=  BIT0              //SCL = 1
#define SCL_0       PORTD &=~ BIT0              //SCL = 0
#define DIR_IN      DDRD &=~ BIT1;  SDA_1      //I/O????
#define DIR_OUT     DDRD |=  BIT1              //I/0????
#define SCL_OUT     DDRD |=BIT0;
#define SDA_IN      ((PIND & 0x02)>>1)        //Read SDA
extern float syst_parm[50];
void Init(void);
void Start(void);
void Stop(void);
void Delay(int n);
unsigned char ReadByte(void);
void Ack(unsigned char a);
unsigned char WriteByte(unsigned char WriteData);
unsigned char Read8Byte(unsigned char *TimeBuffer);
unsigned char Write8Byte( unsigned char *WriteData);
unsigned char TWIWriteByte(unsigned char *Bdata);
unsigned char TWIReadBytes(unsigned char *rBytes);
void Init_TWI(void);
unsigned char Init_Clock(void);
unsigned char TWIWriteOneByte(unsigned char wData,unsigned char wAddr);
unsigned char ReadTime(unsigned char *rTimBuff);
unsigned char SetTime(void);