rtc.c

ucos-II 在英飞凌xc164的移植

//****************************************************************************
// @Module        Real Timer Clock (RTC)
// @Filename      RTC.C
// @Project       rtc.dav
//----------------------------------------------------------------------------




//****************************************************************************
// @Project Includes
//****************************************************************************

#include "MAIN.H"
extern int n;

/****************************************************************************************************************
             @Function      void RTC_vInit(void) 



*****************************************************************************************************************/




void RTC_vInit(void)
{


  MAIN_vUnlockProtecReg();       //unlock SYSCON0
  SYSCON0_RTCCM  =  0;           // enable access to control bits

  ///  -----------------------------------------------------------------------
  ///  Configuration of the RTC Counter:
  ///  -----------------------------------------------------------------------
  ///  - RTC input frequency is 375.000 kHz
  ///  - the input clock is divided by factor 8
  ///  - counter is started after initialization

  while((RTC_CON & 0x8000) == 0x0000);      // wait until access is possible
  RTC_CON        =  0x0002;      // load RTC control register

  ///  - overflow period on T14:  10.0053 [ms]
  ///  - overflow period on CNT0: 40.0213 [ms]
  ///  - overflow period on CNT1: 2.5614 [s]
  ///  - overflow period on CNT2: 2.7321 [min]
  ///  - overflow period on CNT3: 1.9428 [days]

  RTC_T14REL     =  0xFE2B;      // load T14 count/reload register
  RTC_RTCL       =  0x03FC;      // load RTC low register
  RTC_RELL       =  0x03FC;      // load RTC reload low register
  RTC_RTCH       =  0x0000;      // load RTC high register
  RTC_RELH       =  0x0000;      // load RTC reload high register

  ///  -----------------------------------------------------------------------
  ///  Configuration of the used RTC Interrupts:
  ///  -----------------------------------------------------------------------
  ///  RTC service request node configuration:
  ///  - RTC interrupt priority level (ILVL) = 13
  ///  - RTC interrupt group level (GLVL) = 1
  ///  - RTC group priority extension (GPX) = 0

  RTC_IC         =  0x0075;     

  RTC_ISNC       =  0x0004;      // load RTC interrupt sub node register

  RTC_CON_RUN    =  1;           // starts the counter

  // USER CODE BEGIN (Init,3)

  // USER CODE END

} //  End of function RTC_vInit


//****************************************************************************
// @Function      void RTC_viRTC(void) 
//
//----------------------------------------------------------------------------
// @Description   This is the RTC interrupt service routine. It is called up 
//                when:
//                 - counter T14 overflows and is reloaded
//                 - counter CNT0 overflows and is reloaded
//                 - counter CNT1 overflows and is reloaded
//                 - counter CNT2 overflows and is reloaded
//                 - counter CNT3 overflows and is reloaded
//                This interrupt request may eg. be used to provide a system 
//                time tick independent of the CPU frequency, or to wake up 
//                regularly from idle mode.
//                
//                Please note that you have to add application specific code 
//                to this function.


//****************************************************************************


void RTC_viRTC(void) interrupt RTCINT
{


  if(RTC_ISNC_0IR)            // if counter CNT0 overflow
  {

    // USER CODE BEGIN (RTC,4)

    // USER CODE END

    RTC_ISNC_0IR = 0;

  }
  
  
   if(n%2)
  { 
     P1H = 0x00FF;
	 P1L = 0x0000;
	  }
  else
  {
      P1H = 0x0000;
	  P1L = 0x00FF;
	  }  
	n++;
  
} 
//  End of function RTC_viRTC




// USER CODE BEGIN (RTC_General,10)

// USER CODE END