pcf8583.c

单片机c语言程序设计100例--基于PIC+PROTEUS

//-----------------------------------------------------------------
//  名称: PCF8583实时时钟芯片程序
//-----------------------------------------------------------------
#include  <pic.h>
#include "PCF8583.h"
bit ack = 0;
//I2C通用操作宏定义
#define Idle()        {while ((SSPCON2 & 0x1F)|(RW));}
#define Wait()        {while (SSPIF == 0); SSPIF = 0;}
#define Start()       {Idle(); SSPIF = 0;  SEN = 1; Wait();}
#define Stop()        {Idle(); SSPIF = 0;  PEN = 1; Wait();}
#define RepStart()    {Idle(); SSPIF = 0;  RSEN = 1;Wait();}
#define WriteByte(x)  {Idle(); SSPBUF = x; Wait(); ack = !ACKSTAT; }
#define EnableRecv()  {Idle(); RCEN = 1;   while (SSPIF == 0);}
#define AckI2C()      {ACKDT = 0;ACKEN = 1;Wait();}
#define NoAckI2C()    {ACKDT = 1;ACKEN = 1;Wait();}

//所读取的RTC数据及转换后的时间数据
INT8U RTC_DATA[4], DateTime[4];
//-----------------------------------------------------------------
// I2C初始化
//-----------------------------------------------------------------
void I2C_Init()
{



}

//-----------------------------------------------------------------
// 将buf缓冲的len个字节写入RTC指定地址     
//-----------------------------------------------------------------
void RTC_Write(INT8U addr,INT8U *buf,INT8U len)
{


}

//-----------------------------------------------------------------
// 从RTC指定地址读多字节到buf缓冲   
//-----------------------------------------------------------------
void RTC_Read(INT8U addr,INT8U *buf,INT8U len)
{    	


}
 
//-----------------------------------------------------------------
// BCD码转换为DEC码  
//-----------------------------------------------------------------
INT8U BCD_TO_DEC(INT8U d)
{


}

//-----------------------------------------------------------------
// DEC码转换为BCD码  
//-----------------------------------------------------------------
INT8U DEC_TO_BCD(INT8U b)
{


}

//-----------------------------------------------------------------
// 读取RTC时钟数据并转换为BCD码
//-----------------------------------------------------------------
void GetDateTime()
{


}