使用STM32CubeMX生成RTC工程[闹钟中断2]

在上次使用STM32CubeMX生成RTC工程[闹钟中断]基础上实现周期间隔的闹钟

一些场合需要周期性的闹钟

现在为了方便设置每十秒来一次。

备注：

当然可以直接修改HAL库static HAL_StatusTypeDef RTC_WriteAlarmCounter(RTC_HandleTypeDef* hrtc, uint32_t AlarmCounter)将这个开发出来，但是本着能不修改底层库就尽然不修改的原则。好了废话少说上代码：

/**
  ******************************************************************************
  * File Name          : main.c
  * Description        : Main program body
  ******************************************************************************
  ** This notice applies to any and all portions of this file
  * that are not between comment pairs USER CODE BEGIN and
  * USER CODE END. Other portions of this file, whether
  * inserted by the user or by software development tools
  * are owned by their respective copyright owners.
  *
  * COPYRIGHT(c) 2017 STMicroelectronics
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f1xx_hal.h"

/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private variables ---------------------------------------------------------*/
RTC_HandleTypeDef hrtc;

/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
/* Buffer used for displaying Time */
uint8_t aShowTime[] = {};
uint8_t ShowTime1[50] = {0};
uint8_t ShowTime2[50] = {0};
uint8_t rtc_alarm_flag = ;
uint8_t rtc_event_flag = ;

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_RTC_Init(void);

/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/

/* USER CODE END PFP */

/* USER CODE BEGIN 0 */

uint8_t BIN2BCD(uint8_t byte)
{
    uint8_t low, high;
    low = byte & 0x0F;
    high = ((byte >> ) & 0x0F) * ;
    return high + low;
}

uint8_t BCD2BIN(uint8_t byte)
{
    return ((byte/)<<) + (byte%);
}

/**
  * @brief  Sets the specified RTC Alarm with Interrupt
  * @param  AlarmCounter: Counter to write in RTC_ALR registers
  * @note   The HAL_RTC_SetTime() must be called before enabling the Alarm feature.
  */
void APP_RTC_SetAlarmCounter_IT(uint32_t AlarmCounter)
{
    RTC_AlarmTypeDef sAlarm;
    uint32_t counter_alarm = 0;
    uint32_t counter_time = 0;
    RTC_TimeTypeDef stime = {0};

//    assert_param(AlarmCounter<= 86400);

    HAL_RTC_GetTime(&hrtc, &stime, RTC_FORMAT_BIN);

    sprintf((char*)ShowTime1," GetTime %02d:%02d:%02d",stime.Hours, stime.Minutes, stime.Seconds);

    /* Convert time in seconds */
    counter_time = (uint32_t)(((uint32_t)stime.Hours * 3600) + \
                      ((uint32_t)stime.Minutes * 60) + \
                      ((uint32_t)stime.Seconds));  

     counter_alarm =  counter_time+AlarmCounter;

     sAlarm.Alarm = RTC_ALARM_A;
     sAlarm.AlarmTime.Hours   = (uint32_t)((counter_alarm / 3600) % 24);
     sAlarm.AlarmTime.Minutes = (uint32_t)((counter_alarm % 3600) / 60);
     sAlarm.AlarmTime.Seconds = (uint32_t)((counter_alarm % 3600) % 60);

    sprintf((char*)ShowTime2,"SetAlarm %02d:%02d:%02d", sAlarm.AlarmTime.Hours,  sAlarm.AlarmTime.Minutes,  sAlarm.AlarmTime.Seconds);
    if(HAL_RTC_SetAlarm_IT(&hrtc,&sAlarm,RTC_FORMAT_BIN) != HAL_OK)
    {
        /* Initialization Error */
        Error_Handler();
    }
}
/**
  * @brief  Configure the current time and date.
  * @param  None
  * @retval None
  */
static void RTC_AlarmConfig(void)
{

    RTC_AlarmTypeDef salarmstructure;

    /*##-1- Configure the RTC Alarm peripheral #################################*/
    /* Set Alarm to 01:17:30
       RTC Alarm Generation: Alarm on Hours, Minutes and Seconds */
    salarmstructure.Alarm = RTC_ALARM_A;
    salarmstructure.AlarmTime.Hours = 0x1;
    salarmstructure.AlarmTime.Minutes = 0x24;
    salarmstructure.AlarmTime.Seconds = 0x00;

    if(HAL_RTC_SetAlarm_IT(&hrtc,&salarmstructure,RTC_FORMAT_BCD) != HAL_OK)
    {
        /* Initialization Error */
        Error_Handler();
    }
}

/**
  * @brief  Display the current time.
  * @param  showtime : pointer to buffer
  * @retval None
  */
static void RTC_TimeShow(uint8_t* showtime)
{
    RTC_DateTypeDef sdatestructureget;
    RTC_TimeTypeDef stimestructureget;

    /* Get the RTC current Time */
    HAL_RTC_GetTime(&hrtc, &stimestructureget, RTC_FORMAT_BIN);
    /* Get the RTC current Date */
    HAL_RTC_GetDate(&hrtc, &sdatestructureget, RTC_FORMAT_BIN);
    /* Display time Format : hh:mm:ss */
    sprintf((char*)showtime,"%02d:%02d:%02d",stimestructureget.Hours, stimestructureget.Minutes, stimestructureget.Seconds);
}
/* USER CODE END 0 */

int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration----------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_RTC_Init();

  /* USER CODE BEGIN 2 */

    /*##-1- Configure Alarm ####################################################*/
    /* Configure RTC Alarm */
    //RTC_AlarmConfig();
     APP_RTC_SetAlarmCounter_IT(10);

    HAL_RTCEx_SetSecond_IT(&hrtc);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
    while ()
    {
  /* USER CODE END WHILE */

  /* USER CODE BEGIN 3 */
        /*##-2- Display the updated Time #########################################*/
        RTC_TimeShow(aShowTime);
    }
  /* USER CODE END 3 */

}

/** System Clock Configuration
*/
void SystemClock_Config(void)
{

  RCC_OscInitTypeDef RCC_OscInitStruct;
  RCC_ClkInitTypeDef RCC_ClkInitStruct;
  RCC_PeriphCLKInitTypeDef PeriphClkInit;

    /**Initializes the CPU, AHB and APB busses clocks
    */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.LSIState = RCC_LSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }

    /**Initializes the CPU, AHB and APB busses clocks
    */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }

  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_RTC;
  PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }

    /**Configure the Systick interrupt time
    */
  HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/);

    /**Configure the Systick
    */
  HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

  /* SysTick_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(SysTick_IRQn, , );
}

/* RTC init function */
static void MX_RTC_Init(void)
{

  RTC_TimeTypeDef sTime;
  RTC_DateTypeDef DateToUpdate;

    /**Initialize RTC Only
    */
  hrtc.Instance = RTC;
  hrtc.Init.AsynchPrediv = RTC_AUTO_1_SECOND;
  hrtc.Init.OutPut = RTC_OUTPUTSOURCE_NONE;
  if (HAL_RTC_Init(&hrtc) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }

    /**Initialize RTC and set the Time and Date
    */
  if(HAL_RTCEx_BKUPRead(&hrtc, RTC_BKP_DR1) != 0x32F2){
  sTime.Hours = 0x1;
  sTime.Minutes = 0x17;
  sTime.Seconds = 0x0;

  if (HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BCD) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }

  DateToUpdate.WeekDay = RTC_WEEKDAY_FRIDAY;
  DateToUpdate.Month = RTC_MONTH_JULY;
  DateToUpdate.Date = 0x14;
  DateToUpdate.Year = 0x17;

  if (HAL_RTC_SetDate(&hrtc, &DateToUpdate, RTC_FORMAT_BCD) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }

    HAL_RTCEx_BKUPWrite(&hrtc,RTC_BKP_DR1,0x32F2);
  }

}

/** Configure pins as
        * Analog
        * Input
        * Output
        * EVENT_OUT
        * EXTI
*/
static void MX_GPIO_Init(void)
{

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOD_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();

}

/* USER CODE BEGIN 4 */

void HAL_RTCEx_RTCEventCallback (RTC_HandleTypeDef *hrtc)
{

    rtc_event_flag++;
}
/**
  * @brief  Alarm callback
  * @param  hrtc : RTC handle
  * @retval None
  */
void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc)
{
    APP_RTC_SetAlarmCounter_IT();
    rtc_alarm_flag++;
}
/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @param  None
  * @retval None
  */
void _Error_Handler(char * file, int line)
{
  /* USER CODE BEGIN Error_Handler_Debug */
    /* User can add his own implementation to report the HAL error return state */
    while()
    {
    }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef USE_FULL_ASSERT

/**
   * @brief Reports the name of the source file and the source line number
   * where the assert_param error has occurred.
   * @param file: pointer to the source file name
   * @param line: assert_param error line source number
   * @retval None
   */
void assert_failed(uint8_t* file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
    /* User can add his own implementation to report the file name and line number,
      ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */

}

#endif

/**
  * @}
  */ 

/**
  * @}
*/ 

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

仿真结果如下：