M031的RTC报警中断使用方法

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

 * [url=home.php?mod=space&uid=288409]@file[/url]     main.c

 * [url=home.php?mod=space&uid=895143]@version[/url]  V1.00

 * [url=home.php?mod=space&uid=247401]@brief[/url]    Demonstrate the RTC alarm function. It sets an alarm 10 seconds

 *           after execution

 *

 * SPDX-License-Identifier: Apache-2.0

 * [url=home.php?mod=space&uid=17282]@CopyRight[/url] (C) 2016 Nuvoton Technology Corp. All rights reserved.

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

#include <stdio.h>

#include "NuMicro.h"



/*---------------------------------------------------------------------------------------------------------*/

/* Global variables                                                                                        */

/*---------------------------------------------------------------------------------------------------------*/



volatile int32_t   g_bAlarm  = FALSE;





/*---------------------------------------------------------------------------------------------------------*/

/* RTC Alarm Handle                                                                             */

/*---------------------------------------------------------------------------------------------------------*/

void RTC_AlarmHandle(void)

{

    printf(" Alarm!!\n");

    g_bAlarm = TRUE;

}



/**

  * @brief  RTC ISR to handle interrupt event

  * @param  None

  * @retval None

  */

void RTC_IRQHandler(void)

{

    if ( (RTC->INTEN & RTC_INTEN_ALMIEN_Msk) && (RTC->INTSTS & RTC_INTSTS_ALMIF_Msk) )        /* alarm interrupt occurred */

    {

        RTC->INTSTS = 0x1;



        RTC_AlarmHandle();

    }

}



void SYS_Init(void)

{

    /* Unlock protected registers */

    SYS_UnlockReg();



    /* Enable LXT clock */

    CLK_EnableXtalRC(CLK_PWRCTL_LXTEN_Msk);



    /* Enable HIRC clock */

    CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);



    /* Waiting for HIRC clock ready */

    CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);



    /* Switch HCLK clock source to HIRC and HCLK source divide 1 */

    CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));



    /* Enable UART0 clock */

    CLK_EnableModuleClock(UART0_MODULE);



    /* Switch UART0 clock source to HIRC */

    CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UART0SEL_HIRC, CLK_CLKDIV0_UART0(1));



    /* Enable RTC clock */

    CLK_EnableModuleClock(RTC_MODULE);



    /* Update System Core Clock */

    SystemCoreClockUpdate();



    /* Set PB multi-function pins for UART0 RXD=PB.12 and TXD=PB.13 */

    SYS->GPB_MFPH = (SYS->GPB_MFPH & ~(SYS_GPB_MFPH_PB12MFP_Msk | SYS_GPB_MFPH_PB13MFP_Msk))

                    |(SYS_GPB_MFPH_PB12MFP_UART0_RXD | SYS_GPB_MFPH_PB13MFP_UART0_TXD);



    /* Lock protected registers */

    SYS_LockReg();

}



void UART0_Init()

{

    /*---------------------------------------------------------------------------------------------------------*/

    /* Init UART                                                                                               */

    /*---------------------------------------------------------------------------------------------------------*/

    /* Reset UART module */

    SYS_ResetModule(UART0_RST);



    /* Configure UART0 and set UART0 Baudrate */

    UART_Open(UART0, 115200);

}





int32_t main(void)

{

    S_RTC_TIME_DATA_T sInitTime;

    S_RTC_TIME_DATA_T sCurTime;



    SYS_Init();



    UART0_Init();



    /* Time Setting */

    sInitTime.u32Year       = 2017;

    sInitTime.u32Month      = 5;

    sInitTime.u32Day        = 1;

    sInitTime.u32Hour       = 12;

    sInitTime.u32Minute     = 30;

    sInitTime.u32Second     = 0;

    sInitTime.u32DayOfWeek  = RTC_MONDAY;

    sInitTime.u32TimeScale  = RTC_CLOCK_24;



    RTC_Open(&sInitTime);



    printf("\n RTC Alarm Test (Alarm after 10 seconds)\n\n");



    g_bAlarm = FALSE;



    /* Get the current time */

    RTC_GetDateAndTime(&sCurTime);



    printf(" Current Time:%d/%02d/%02d %02d:%02d:%02d\n",sCurTime.u32Year,sCurTime.u32Month,

           sCurTime.u32Day,sCurTime.u32Hour,sCurTime.u32Minute,sCurTime.u32Second);



    /* The alarm time setting */

    sCurTime.u32Second = sCurTime.u32Second + 10;



    /* Set the alarm time */

    RTC_SetAlarmDateAndTime(&sCurTime);



    /* Clear interrupt status */

    RTC->INTSTS = RTC_INTSTS_ALMIF_Msk;



    /* Enable RTC Alarm Interrupt */

    RTC_EnableInt(RTC_INTEN_ALMIEN_Msk);



    NVIC_EnableIRQ(RTC_IRQn);



    while(!g_bAlarm);



    /* Get the current time */

    RTC_GetDateAndTime(&sCurTime);



    printf(" Current Time:%d/%02d/%02d %02d:%02d:%02d\n",sCurTime.u32Year,sCurTime.u32Month,

           sCurTime.u32Day,sCurTime.u32Hour,sCurTime.u32Minute,sCurTime.u32Second);



    /* Disable RTC Alarm Interrupt */

    RTC_DisableInt(RTC_INTEN_ALMIEN_Msk);

    NVIC_DisableIRQ(RTC_IRQn);



    printf("\n RTC Alarm Test End !!\n");



    while(1);



}







/*** (C) COPYRIGHT 2016 Nuvoton Technology Corp. ***/