rtc.c

时钟芯片读写程序

/*
  时钟读写头文件
  文件名:RTC.c
*/

#include "Common.h"
#include "IOPortMap.h"
#include "RTC.h"
#include "GM20IOPort.H"
#include "InportMap.h"
#include "Macro.h"
#include "F281x.h"

INLINE VOID RTCEnable();
INLINE VOID RTCDisable();
INLINE VOID WriteByte(UINT value);
INLINE UINT ReadByte();
INLINE VOID RTCWrite(UINT port,UINT value);
INLINE UINT RTCRead(UINT port);
INLINE UINT BCDToASCII(UINT value);
INLINE UINT ASCII2BCD(UINT value);
INLINE VOID SetSecond(UINT second);
INLINE UINT GetSecond();
INLINE VOID SetMinute(UINT minute);
INLINE UINT GetMinute();
INLINE VOID SetHour(UINT hour);
INLINE UINT GetHour();
INLINE VOID SetDay(UINT day);
INLINE UINT GetDay();
INLINE VOID SetMonth(UINT month);
INLINE UINT GetMonth();
INLINE VOID SetYear(UINT year);
INLINE UINT GetYear();
VOID SetDate(TIME date);
TIME GetDate();
VOID OSCBegin();

INLINE VOID WriteByte(UINT value)
{
  UINT data,i;
  Delay(RTC_DELAY);
  RTCIO_Out;
  Delay(RTC_DELAY);
  data = value;
  for(i=0;i<8;i++)
   {
      if(((data>>i)&0x0001)==0x0001)
      {
        RTCIO_High;
      }else
      {
        RTCIO_Low;
      }
      NOP;
      RTCCLK_Low;
      Delay(RTC_DELAY);
      RTCCLK_High;
      Delay(RTC_DELAY);
   }
}

INLINE UINT ReadByte()
{
   UINT data,i;
   Delay(RTC_DELAY);
   RTCIO_IN;
   Delay(RTC_DELAY);
   data = 0;
   for(i=0;i<8;i++)
   {
      Delay(RTC_DELAY);
      RTCCLK_High;      //Clock 1
      Delay(RTC_DELAY);
      RTCCLK_Low;       //Clock 0
      data = data>>1;
      if(ifRTCIO)
      {
        data = data|0x0080;
      }else
      {
        data = data|0x0000;
      }
      
   }

   return data;
}
INLINE VOID RTCEnable()
{
   
   RTCCLK_Low;   //Clock = 0
   Delay(RTC_DELAY);
   RTCCS_High;   //CS = 1
   Delay(RTC_DELAY);
}

INLINE VOID RTCDisable()
{
   
   RTCCS_Low;
   Delay(RTC_DELAY);
   RTCCLK_Low;
   Delay(RTC_DELAY);
}
INLINE UINT RTCRead(UINT port)
{
   UINT value;
  
   RTCEnable();
   WriteByte(0x008E);
   WriteByte(0x0000);
   RTCDisable();
  
   
   RTCEnable();
   WriteByte(port);
   value = ReadByte();
   RTCDisable();
   
   RTCEnable();
   WriteByte(0x008E);
   WriteByte(0x0080);
   RTCDisable();
   return value;
}
INLINE VOID RTCWrite(UINT port,UINT value)
{
   
   RTCEnable();
   WriteByte(0x008E);
   WriteByte(0x0000);
   RTCDisable();
   
   RTCEnable();
   WriteByte(port);
   WriteByte(value);
   RTCDisable();
   
   RTCEnable();
   WriteByte(0x008E);
   WriteByte(0x0080);
   RTCDisable();
}

//BCD TO ASCII
INLINE UINT BCDToASCII(UINT value)
{
   UINT valueH,valueL;
   valueH = (value>>4)&0X0007;
   valueL = value&0X000F;
   value = valueH*10+valueL;
   return value;
}

INLINE UINT ASCII2BCD(UINT value)
{
  UINT bcd_data;
  UINT temp;
  temp=value%100;
  bcd_data=((UINT)value)/100<<8;
  bcd_data=bcd_data|temp/10<<4;
  bcd_data=bcd_data|temp%10;
  return bcd_data;
}

INLINE VOID SetSecond(UINT second)
{
   
   RTCWrite(0x0080,ASCII2BCD(second));
}
INLINE UINT GetSecond()
{
   UINT second;
   second = RTCRead(0x0081);
   second = BCDToASCII(second);
   return second;
}
INLINE VOID SetMinute(UINT minute)
{  
   RTCWrite(0x0082,ASCII2BCD(minute));
   
}
INLINE UINT GetMinute()
{
   UINT minute;
   minute = RTCRead(0x0083);
   minute = BCDToASCII(minute);
   return minute;
}
INLINE VOID SetHour(UINT hour)
{
   RTCWrite(0x0084,ASCII2BCD(hour));
}
INLINE UINT GetHour()
{
  UINT hour;
  hour = RTCRead(0x0085);
  hour = BCDToASCII(hour);
  return hour;
}
INLINE VOID SetDay(UINT day)
{
  RTCWrite(0x0086,ASCII2BCD(day));
}
INLINE UINT GetDay()
{
  UINT day;
  day = RTCRead(0x0087);
  day = BCDToASCII(day);
  return day;
}

INLINE VOID SetMonth(UINT month)
{ 
  RTCWrite(0x0088,ASCII2BCD(month));
}

INLINE UINT GetMonth()
{
  UINT month;
  month = RTCRead(0x0089);
  month = BCDToASCII(month);
  return month;
}

INLINE VOID SetYear(UINT year)
{ 
  RTCWrite(0x008C,ASCII2BCD(year));
}

INLINE UINT GetYear()
{
  UINT year;
  year = RTCRead(0x008D);
  year = BCDToASCII(year);
  return year;
}

VOID OSCBegin()
{
   UINT second;
   second = GetSecond();
   second = second&0x007F;
   SetSecond(second);
}

VOID SetDate(TIME date)
{

   SetSecond(date.second);
   SetMinute(date.minute);
   SetHour(date.hour); 
   SetDay(date.day);
   SetMonth(date.month);
   SetYear(date.year);

}
TIME GetDate()
{
   TIME date;
   date.second = GetSecond();
   date.minute = GetMinute();
   date.hour   = GetHour();
   date.day    = GetDay();
   date.month  = GetMonth();
   date.year   = GetYear();

   return date;
}