smartclock_alarm.c

SmaRTclock Silicon labs Real Time Clock 實現

//
// File Name:smaRTClock_Alarm.c
//----------------------------------------------------------------------------
// Project Name: SmaRTClock
// Module Name: Alarm Setting
//----------------------------------------------------------------------------
//
// Company: Semiconductor Device Solution, Inc
// http://www.sdsi.com.tw/
//
// Engineer: Owen Chen
// Create Date: 19:51:30 03/25/2007 
// Revision: 1.01
//
// Description: Setting a smaRTClock Alarm
//              Step1). Disable smaRTClock Alarm Events (RTC0AEN = 0).
//              Step2). Set ALARMn registers to the desired value.
//              Step3). Enable smaRTClock Alarm Events (RTC0AEN = 0).
//              
//                                           
// 
// Target Devcies: C8051F412
//
// Tool Chain: Tool chain: KEIL Eval 'c'
// Copyright Semiconductor Device Solution, Inc.All Rights Reserved

//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------

#include <c8051f410.h>                 // SFR declarations
typedef unsigned char  uchar;

//-----------------------------------------------------------------------------
// Function PROTOTYPES
//-----------------------------------------------------------------------------

void RTC_Init(void);                       // smaRTClock Initialization
void ALARM_Set(void);
void Interrupt_Init(void);

//-----------------------------------------------------------------------------
// Global CONSTANTS
//-----------------------------------------------------------------------------

#define RTC_WAIT()                      while ( RTC0ADR & 0x80)   // Poll on the BUSY bit
#define RTC_WRITE( addr, dat )         { RTC_WAIT(); RTC0ADR = (addr)   ; RTC0DAT = dat; }

//-----------------------------------------------------------------------------
// Global VARIABLES
//-----------------------------------------------------------------------------

uchar data ALARM_data[6] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06};

// RTC register address

enum {    CAPTURE0, CAPTURE1, CAPTURE2, CAPTURE3, CAPTURE4, CAPTURE5,   
          RTC0CN, 
          RTC0XCN,
          ALARM0, ALARM1, ALARM2, ALARM3, ALARM4, ALARM5,     
          RAMADDR,    
          RAMDATA
};


//-----------------------------------------------------------------------------
// MAIN Routine
//-----------------------------------------------------------------------------
//start main

void main()
{   
    	
//-----------------------------------------------------------------------------
// Initialization Subroutines
//-----------------------------------------------------------------------------

     PCA0MD &= ~0x40;    // disable WDT temporarily 
          
     // Unlock
	 RTC0KEY   =  0xA5;
	 RTC0KEY   =  0xF1;
	 
	 ALARM_Set();       // Setting ALARM Time

	 Interrupt_Init();
	 
// Read Time
     
	 while(1)
	 	{

		   RTC_WRITE(RTC0CN, 0x91);		   

		}

	 
}


//-----------------------------------------------------------------------------
// Setting the smaRTClock Alarm 
//-----------------------------------------------------------------------------

void ALARM_Set(void)
{
     // Disable smaRTClock Allarm
     RTC_WRITE(RTC0CN, 0x90);  // point to RTC0CN
                                 // smaRTClock Enable, smaRTClock Timer Run
                                 // smaRTCLock Alarm Disable

	 // Setting ALARMn register

	 RTC_WRITE(ALARM0, ALARM_data[0]);  // ALARM0

	 RTC_WRITE(ALARM1, ALARM_data[1]);  // ALARM1

	 RTC_WRITE(ALARM2, ALARM_data[2]);  // ALARM2

	 RTC_WRITE(ALARM3, ALARM_data[3]);  // ALARM3

	 RTC_WRITE(ALARM4, ALARM_data[4]);  // ALARM4

	 RTC_WRITE(ALARM5, ALARM_data[5]);  // ALARM5

	 

	 RTC_WRITE(RTC0CN, 0x98);    // point to RTC0CN
                                 // smaRTClock Enable, smaRTClock Timer Run
                                 // smaRTCLock Alarm Enable

     RTC_WRITE(RTC0XCN, 0x40);   // point to RTC0XCN
                                 // Crystal Mode

}

//-----------------------------------------------------------------------------
// Interrupt Service Routines
//-----------------------------------------------------------------------------

void Interrupt_Init()
{
    EIE1      = 0x02;    // EIE1: Extended Interrupt Enable 1
	                     // Enable smaRTClock Interrupt
    IE        = 0x80;    // Enable each interrupt
	

}

//-----------------------------------------------------------------------------
// smaRTClock interrupt ISR
//-----------------------------------------------------------------------------
//
// Description:
//
//-----------------------------------------------------------------------------

void smaRTClock_ISR(void) interrupt 8
{
     

}

//-----------------------------------------------------------------------------
// End Of File
//-----------------------------------------------------------------------------