MSP430 RTC

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* MSP430 CODE EXAMPLE DISCLAIMER
*
* MSP430 code examples are self-contained low-level programs that typically
* demonstrate a single peripheral function or device feature in a highly
* concise manner. For this the code may rely on the device's power-on default
* register values and settings such as the clock configuration and care must
* be taken when combining code from several examples to avoid potential side
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* for an API functional library-approach to peripheral configuration.
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//******************************************************************************
// MSP430F54xA Demo - RTC_A in real time clock mode
//
// Description: This program demonstrates the RTC mode by triggering an
// interrupt every second and minute. This code toggles P1.0 every second.
// This code recommends an external LFXT1 crystal for RTC accuracy.
// ACLK = LFXT1 = 32768Hz, MCLK = SMCLK = default DCO = 32 x ACLK = 1048576Hz
//
// MSP430F54xA
// -----------------
// /|\ | XIN|-
// | | | 32kHz
// ---|RST XOUT|-
// | |
// | P1.0 |--> Toggles every second
// | |
//
// W. Goh
// Texas Instruments Inc.
// April 2010
// Built with CCS version 4.2 and IAR Embedded Workbench Version: 4.21.8
//******************************************************************************

#include <msp430.h>

int main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop Watchdog Timer
P1DIR |= BIT0; // Set P1.0 as output

// Initialize LFXT1
P7SEL |= 0x03; // Select XT1
UCSCTL6 &= ~(XT1OFF); // XT1 On
UCSCTL6 |= XCAP_3; // Internal load cap

// Loop until XT1,XT2 & DCO fault flag is cleared
do
{
UCSCTL7 &= ~(XT2OFFG + XT1LFOFFG + XT1HFOFFG + DCOFFG);
// Clear XT2,XT1,DCO fault flags
SFRIFG1 &= ~OFIFG; // Clear fault flags
}while (SFRIFG1&OFIFG); // Test oscillator fault flag

// Configure RTC_A
RTCCTL01 |= RTCTEVIE + RTCRDYIE + RTCBCD + RTCHOLD + RTCMODE;
// RTC enable, BCD mode, RTC hold
// enable RTC read ready interrupt
// enable RTC time event interrupt

RTCYEAR = 0x2010; // Year = 0x2010
RTCMON = 0x4; // Month = 0x04 = April
RTCDAY = 0x05; // Day = 0x05 = 5th
RTCDOW = 0x01; // Day of week = 0x01 = Monday
RTCHOUR = 0x10; // Hour = 0x10
RTCMIN = 0x32; // Minute = 0x32
RTCSEC = 0x45; // Seconds = 0x45

RTCADOWDAY = 0x2; // RTC Day of week alarm = 0x2
RTCADAY = 0x20; // RTC Day Alarm = 0x20
RTCAHOUR = 0x10; // RTC Hour Alarm
RTCAMIN = 0x23; // RTC Minute Alarm

RTCCTL01 &= ~(RTCHOLD); // Start RTC calendar mode

__bis_SR_register(LPM3_bits + GIE); // Enter LPM3 mode with interrupts
// enabled
__no_operation();
}

#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=RTC_VECTOR
__interrupt void RTC_ISR(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(RTC_VECTOR))) RTC_ISR (void)
#else
#error Compiler not supported!
#endif
{
switch(__even_in_range(RTCIV,16))
{
case RTC_NONE: // No interrupts
break;
case RTC_RTCRDYIFG: // RTCRDYIFG
P1OUT ^= 0x01; // Toggles P1.0 every second
break;
case RTC_RTCTEVIFG: // RTCEVIFG
__no_operation(); // Interrupts every minute
break;
case RTC_RTCAIFG: // RTCAIFG
break;
case RTC_RT0PSIFG: // RT0PSIFG
break;
case RTC_RT1PSIFG: // RT1PSIFG
break;
case 12: break; // Reserved
case 14: break; // Reserved
case 16: break; // Reserved
default: break;
}
}

麻烦你帮我看一下，我的程序进不去中断。

#include <msp430.h>
#include "oled.h"

int hour=0;
int min=0;
int sec=0;

void main()
{
	WDTCTL = WDTPW + WDTHOLD;

//时钟设置
	  P1DIR |= BIT0;                            // ACLK set out to pin
	  P1SEL |= BIT0;
	  P5SEL |= BIT4+BIT5;                       // Select XT1

	  UCSCTL6 &= ~(XT1OFF);                     // XT1 On
	  UCSCTL6 |= XCAP_3;                        // Internal load cap
	  UCSCTL3 = 0;                              // FLL Reference Clock = XT1

	  // Loop until XT1,XT2 & DCO stabilizes - In this case loop until XT1 and DCo settle
	  do
	  {
	    UCSCTL7 &= ~(XT2OFFG + XT1LFOFFG + DCOFFG);
	                                            // Clear XT2,XT1,DCO fault flags
	    SFRIFG1 &= ~OFIFG;                      // Clear fault flags
	  }while (SFRIFG1&OFIFG);                   // Test oscillator fault flag

	  UCSCTL6 &= ~(XT1DRIVE_3);                 // Xtal is now stable, reduce drive strength

	  UCSCTL4 |= SELA_0;                        // ACLK = LFTX1 (by default)


	  RTCCTL01 |= RTCTEVIE + RTCRDYIE + RTCBCD + RTCHOLD + RTCMODE;


	RTCCTL0 |= RTCTEVIE + RTCRDYIE;
	RTCCTL1 |= RTCMODE + RTCHOLD;
	
    RTCSEC=50;//RTC初始化，定位2015.4.27/01 23:59:50
    RTCMIN=59;
    RTCHOUR=23;
    RTCDOW=01;
    RTCDAY=27;
    RTCMON=04;
    RTCYEARH = 20;
    RTCYEARL=15;
    
    RTCCTL1 &= ~(RTCHOLD); // Start RTC calendar mode

    _EINT();
//    __bis_SR_register( GIE);

	OLED_Init();
	OLED_Clear();

	 while(1)
	 {
		 OLED_ShowNum(0, 0, sec, 2, 16);
		 OLED_ShowNum(0, 2, min, 2, 16);
		 OLED_ShowNum(0, 4, hour, 2, 16);
	 }
}
#pragma vector=RTC_VECTOR
__interrupt void RTC_ISR(void)
{
	switch(__even_in_range(RTCIV,16))
  {
       case 2 : P3OUT ^= BIT6;  //根据前面的知识，中断向量第二位是用来读时间寄存器中的值的
           sec = RTCSEC;                       //更新秒
           min = RTCMIN;                      //更新分钟
           hour = RTCHOUR;//更新小时
       break;             //RTCRDYIFG
       case 6 :
       break;
  }
}