fm3104.h

铁电存储器fm3104读写子程序。fm3104是串行256byte、rtc、可编程看门狗集成多功能芯片

//IOPB5 SCL
//IOPB7 SDA

UWORD Factor;

extern CLOCK Clock;
extern volatile UWORD *PBDATDIR;

#define SDA_1     	*PBDATDIR|=0x0080           //SDA = 1
#define SDA_0       *PBDATDIR&=0xff7f           //SDA = 0
#define SCL_1       *PBDATDIR|=0x0020           //SCL = 1
#define SCL_0       *PBDATDIR&=0xffdf           //SCL = 0
#define DIR_IN      *PBDATDIR&=0x7fff 	        //SDA为输入
#define DIR_OUT     *PBDATDIR|=0x8000           //SDA为输出
#define SDA_IN      (((*PBDATDIR)>>7)&0x0001)   //Read SDA

void InitRtc(void);
void StartRtc(UWORD cal);
void ReadRtc(void);
void WriteRtc(void);
void ReadEeprom(UWORD address,UWORD *buffer,UWORD n);
void WriteEeprom(UWORD address,UWORD *buffer,UWORD n);
void EnableDog(void);
void DisableDog(void);
void ClearDog(void);
void StartI2C(void);
void StopI2C(void);
void WriteAByte(UWORD data);
UWORD ReadAByte(void);
UWORD ReceiveI2CAck(void);
void SendI2CAck(void);
void SendI2CNAck(void);
void SetCurrentAddress(UWORD slave,UWORD address);
void ReadBytes(UWORD slave,UWORD *buffer,UWORD n);
void WriteBytes(UWORD *buffer,UWORD n);

void Delay(UWORD xms);