MSP430f249读取DS1302时钟显示在1602和串口

单片机源程序如下:

#include 

#include  "cry1602.h"

#include  "cry1602.c"

#include  "DS1302.c"

unsigned char counter=0;

unsigned char second=0;

unsigned char minute=0;

unsigned char hour=0;

//signed char miao=10;

struct sTime bufTime; //time buffer

/*write 1 bcd byte on screen,(x,y)-position on screen, bcd-BCD byte to display*/

void Show2DigitNumber(unsigned char x, unsigned char y,unsigned char number)

{

        Disp1Char(x,y,(number/10+0x30  ));

        Disp1Char(x+1,y,(number%10 +0x30 ));

}

int main( void )

{

  WDTCTL = WDTPW + WDTHOLD;                 // Stop WDT

  if (CALBC1_1MHZ==0xFF)                                        // If calibration constant erased

  {                                                                                       

    while(1);                               // do not load, trap CPU!!       

  }

  DCOCTL = 0;                               // Select lowest DCOx and MODx settings

  BCSCTL1 = CALBC1_1MHZ;                    // Set DCO

  DCOCTL = CALDCO_1MHZ;

  P1DIR |= 0x01;                            // P1.0 output

  CCTL0 = CCIE;                             // CCR0 interrupt enabled

  CCR0 = 50000;

  TACTL = TASSEL_2 + MC_2;                  // SMCLK, contmode

  //P6DIR &= ~BIT2;                           //P6.2 input

  P3SEL = 0x30;                             // P3.4,5 = USCI_A0 TXD/RXD

  UCA0CTL1 |= UCSSEL_2;                     // SMCLK

  UCA0BR0 = 104;                            // 1MHz 9600; (104)decimal = 0x068h

  UCA0BR1 = 0;                              // 1MHz 9600

  UCA0MCTL = UCBRS0;                        // Modulation UCBRSx = 1

  UCA0CTL1 &= ~UCSWRST;                     // **Initialize USCI state machine**

  IE2 |= UCA0RXIE;                          // Enable USCI_A0 RX interrupt

  InitDS1302();

  /*  

  P1DIR |= BIT0;//p1.0输出模式

  P1DIR |= BIT1;//p1.1输出模式

  P1DIR |= BIT7;//p1.7输出模式

  P1IE |= BIT2;//使能p1.2中断

  P1IES |= BIT2;//下降沿触发

  P1IFG &= ~BIT2;//清除p1.2中断

  P1IE |= BIT3;//使能p1.3中断

  P1IES |= BIT3;//下降沿触发

  P1IFG &= ~BIT3;//清除p1.3中断

  //P2DIR = 0XFF;P2OUT = 0XFF;

  //P6DIR = 0XFF;P6OUT = 0XFF;

  */

  LcdReset();

  Delay5ms();

  DispStr(0,0,"Serial Output:");

  DispStr(0,1,"00:00:00");

  GetRealTime(&bufTime);  //get current time

     minute=bufTime.min;minute=(minute>>4)*10+(minute&0x0f);

     hour=bufTime.hour;hour=(hour>>4)*10+(hour&0x0f);

     Show2DigitNumber(3,1,minute);

     Show2DigitNumber( 0,1,hour);

     second=DS1302SingleRead(0); second=(second>>4)*10+(second&0x0f);

     Show2DigitNumber(6,1,second); //DispStr(8,1," ");

  // __enable_interrupt();

  __bis_SR_register(LPM0_bits + GIE);       // Enter LPM0, interrupts enabled

}

/*

#pragma vector = PORT1_VECTOR

__interrupt void P1_Interrupt()//P1口中断函数

{

  if(P1IFG&BIT2)//如果P1.2有中断

  {

    P1IFG &= ~BIT2;//清除P1.2引脚中断标志位

    P1OUT ^= BIT0;//P1.0引脚取反

    P1OUT ^= BIT7;//P1.7

    while (!(IFG2&UCA0TXIFG));                // USCI_A0 TX buffer ready?

    UCA0TXBUF = 97;  

    while (!(IFG2&UCA0TXIFG));                // USCI_A0 TX buffer ready?

    UCA0TXBUF = 62;

    //Disp1Char(0,1,97);

    //Disp1Char(1,1,62);

  }

  if(P1IFG&BIT3)//如果P1.3有中断

  {

    P1IFG &= ~BIT3;//清除P1.3引脚中断标志位

    P1OUT ^= BIT1;//P1.1引脚取反

    P1OUT ^= BIT7;//P1.7

    while (!(IFG2&UCA0TXIFG));                // USCI_A0 TX buffer ready?

    UCA0TXBUF = 50;

    //Disp1Char(0,1,50);

    //Disp1Char(1,1,32);

  }

}

*/

void Read_RTC(void)                //读取 日历

{

second=DS1302SingleRead(0); second=(second>>4)*10+(second&0x0f);

minute=DS1302SingleRead(1); minute=(minute>>4)*10+(minute&0x0f);

hour=DS1302SingleRead(2); hour=(hour>>4)*10+(hour&0x0f);

}

// Timer A0 interrupt service routine

#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)

#pragma vector=TIMERA0_VECTOR

__interrupt void Timer_A (void)

#elif defined(__GNUC__)

void __attribute__ ((interrupt(TIMERA0_VECTOR))) Timer_A (void)

#else

#error Compiler not supported!

#endif

{

  counter++;

  if (counter==20)

  {

  counter=0;

/*second++;     

  if (second==60)

    {

       second=0;

       minute++;

       if (minute==60)

        {

          minute=0;

          hour++;

          if (hour==24)

          { hour=0;}

          Show2DigitNumber(0,1,hour); //DispStr(2,1,":");

        }

        Show2DigitNumber(3,1,minute); //DispStr(5,1,":");

      }

  */

//Read_RTC();

  P1OUT ^= 0x01;                            // Toggle P1.0

  second=DS1302SingleRead(0); second=(second>>4)*10+(second&0x0f);

   while (!(IFG2&UCA0TXIFG));                // USCI_A0 TX buffer ready?

    UCA0TXBUF = hour/10+0x30;

   while (!(IFG2&UCA0TXIFG));                // USCI_A0 TX buffer ready?

    UCA0TXBUF = hour%10+0x30;

   while (!(IFG2&UCA0TXIFG));                // USCI_A0 TX buffer ready?

    UCA0TXBUF = 58;

   while (!(IFG2&UCA0TXIFG));                // USCI_A0 TX buffer ready?

    UCA0TXBUF = minute/10+0x30;

   while (!(IFG2&UCA0TXIFG));                // USCI_A0 TX buffer ready?

    UCA0TXBUF = minute%10+0x30;

   while (!(IFG2&UCA0TXIFG));                // USCI_A0 TX buffer ready?

    UCA0TXBUF = 58;

   while (!(IFG2&UCA0TXIFG));                // USCI_A0 TX buffer ready?

    UCA0TXBUF = second/10+0x30;

   while (!(IFG2&UCA0TXIFG));                // USCI_A0 TX buffer ready?

    UCA0TXBUF = second%10+0x30;

   while (!(IFG2&UCA0TXIFG));                // USCI_A0 TX buffer ready?

    UCA0TXBUF = 13;

// Show2DigitNumber(0,1,hour); //DispStr(2,1,":");  

// Show2DigitNumber(3,1,minute); //DispStr(5,1,":");

     Show2DigitNumber(6,1,second); //DispStr(8,1," ");

  //miao = DS1302SingleRead(0);

  //miao=(miao>>4)*10+(miao&0x0f);

//miao=DS1302SingleRead(0); miao=(miao>>4)*10+(miao&0x0f);

  if (second  ==0)

     {

     GetRealTime(&bufTime);  //get current time

     minute=bufTime.min;minute=(minute>>4)*10+(minute&0x0f);

     hour=bufTime.hour;hour=(hour>>4)*10+(hour&0x0f);

     Show2DigitNumber(3,1,minute);

……………………