功能

5529给串口发送实时时间。

可以通过串口修改万年历时间。

部分代码

cpp
void main(void)
{
    WDTCTL = WDTPW + WDTHOLD; // Stop WDT
    initClock();
    SetupRTC();
    init_uart();
    Print_Str("MSP430F5529串口测试\r\n");
    delay_ms(100);
    //LED
    P1DIR |= (BIT0);
    P1OUT &= ~(BIT0);         //关灯0
    _EINT();
    while (1)
    {
    }
}
// Echo back RXed character, confirm TX buffer is ready first
#pragma vector=USCI_A1_VECTOR
__interrupt void USCI_A1_ISR(void)
{
    static unsigned char revbuff = 0;
    static unsigned char rev_modify_ifg = 0;
    static unsigned char rev_modify_count = 0;
    static unsigned char rev_modify_buffer[30]; //A2020-11-11B12:12:12Z2
    switch (__even_in_range(UCA1IV, 4))
    {
    case 0:
        break;                             // Vector 0 - no interrupt
    case 2:                                   // Vector 2 - RXIFG
//        while (!(UCA1IFG & UCTXIFG))
//            ;             // USCI_A0 TX buffer ready?
//        UCA1TXBUF = UCA1RXBUF;                  // TX -> RXed character
        revbuff = UCA1RXBUF;
        if (revbuff == 'A')
        {
            rev_modify_ifg = 1;
            rev_modify_count = 0;
        }
        if (rev_modify_ifg == 1)
        {
            rev_modify_buffer[rev_modify_count++] = revbuff;                //缓存
            if (rev_modify_count == 22)
            {
                rev_modify_ifg = 0;                                   //不再接受
                RTCCTL01 = RTCHOLD + RTCMODE + RTCTEV_0; //关闭RTC
                RTCYEAR=(rev_modify_buffer[1]-'0')*1000+(rev_modify_buffer[3]-'0')*100+(rev_modify_buffer[3]-'0')*10+(rev_modify_buffer[4]-'0')*1;
                RTCMON=(rev_modify_buffer[6]-'0')*10+(rev_modify_buffer[7]-'0')*1;
                RTCDAY=(rev_modify_buffer[9]-'0')*10+(rev_modify_buffer[10]-'0')*1;
                RTCHOUR=(rev_modify_buffer[12]-'0')*10+(rev_modify_buffer[13]-'0')*1;
                RTCMIN=(rev_modify_buffer[15]-'0')*10+(rev_modify_buffer[16]-'0')*1;
                RTCSEC=(rev_modify_buffer[18]-'0')*10+(rev_modify_buffer[19]-'0')*1;
                RTCDOW=(rev_modify_buffer[21]-'0');
                RTCCTL0 |= RTCRDYIE; /* RTCRDY中断使能 */
                RTCCTL01 &= ~RTCHOLD; //打开RTC
            }
        }
        break;
    case 4:
        break;                             // Vector 4 - TXIFG
    default:
        break;
    }
}
#pragma vector=RTC_VECTOR
__interrupt void RTC_ISR(void)
{
    switch (__even_in_range(RTCIV, RTC_RT1PSIFG))
    {
    case RTC_NONE:
        break;
    case RTC_RTCRDYIFG:
    {
        /* RTCDOW   RTCMON   RTCDAY  RTCHOUR  RTCMIN RTCSEC */
        //读取时间
        nian = RTCYEAR;
        yue = RTCMON;
        ri = RTCDAY;
        shi = RTCHOUR;
        fen = RTCMIN;
        miao = RTCSEC;
        zhou = RTCDOW;
        //闪烁灯
        P1OUT ^= BIT0;
        //发送串口
        memset(buf, 0, sizeof(buf));
        sprintf(buf, "%d-%02d-%02d \r\n", nian, yue, ri);
        Print_Str(buf);
        memset(buf, 0, sizeof(buf));
        sprintf(buf, "week %d \r\n", zhou);
        Print_Str(buf);
        memset(buf, 0, sizeof(buf));
        sprintf(buf, "%02d:%02d:%02d \r\n\r\n", shi, fen, miao);
        Print_Str(buf);
    }
        break;
    case RTC_RTCTEVIFG:
        break;
    case RTC_RTCAIFG:
        break;
    case RTC_RT0PSIFG:
        break; /* 分频器 0 */
    case RTC_RT1PSIFG:
        break; /* 分频器 1 */
    default:
        break;
    }
    __no_operation();
}

全部代码

cpp
https://docs.qq.com/sheet/DUEdqZ2lmbmR6UVdU?tab=BB08J2