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STM32CubeF1/Projects/STM32F103RB-Nucleo/Examples/RTC/RTC_Alarm/Src/main.c

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/**
******************************************************************************
* @file RTC/RTC_Alarm/Src/main.c
* @author MCD Application Team
* @brief This sample code shows how to use STM32F1xx RTC HAL API to configure
* Time and Date.
******************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/** @addtogroup STM32F1xx_HAL_Examples
* @{
*/
/** @addtogroup RTC_Alarm
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* RTC handler declaration */
RTC_HandleTypeDef RtcHandle;
/* Buffer used for displaying Time */
uint8_t aShowTime[50] = {0};
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void RTC_AlarmConfig(void);
static void RTC_TimeShow(uint8_t* showtime);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32F103xB HAL library initialization:
- Configure the Flash prefetch
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Set NVIC Group Priority to 4
- Low Level Initialization
*/
HAL_Init();
/* Configure the system clock to 64 MHz */
SystemClock_Config();
/* Configure LED_GREEN */
BSP_LED_Init(LED_GREEN);
/*##-1- Configure the RTC peripheral #######################################*/
RtcHandle.Instance = RTC;
/* Configure RTC prescaler and RTC data registers */
/* RTC configured as follows:
- Asynch Prediv = Automatic calculation of prediv for 1 sec timebase
*/
RtcHandle.Init.AsynchPrediv = RTC_AUTO_1_SECOND;
if (HAL_RTC_Init(&RtcHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/*##-2- Configure Alarm ####################################################*/
/* Configure RTC Alarm */
RTC_AlarmConfig();
/* Infinite loop */
while (1)
{
/*##-3- Display the updated Time #########################################*/
RTC_TimeShow(aShowTime);
}
}
/**
* @brief Alarm callback
* @param hrtc : RTC handle
* @retval None
*/
void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc)
{
/* Turn LED_GREEN on: Alarm generation */
BSP_LED_On(LED_GREEN);
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSI)
* SYSCLK(Hz) = 64000000
* HCLK(Hz) = 64000000
* AHB Prescaler = 1
* APB1 Prescaler = 2
* APB2 Prescaler = 1
* PLLMUL = 16
* Flash Latency(WS) = 2
* @param None
* @retval None
*/
void SystemClock_Config(void)
{
RCC_ClkInitTypeDef clkinitstruct = {0};
RCC_OscInitTypeDef oscinitstruct = {0};
/* Configure PLL ------------------------------------------------------*/
/* PLL configuration: PLLCLK = (HSI / 2) * PLLMUL = (8 / 2) * 16 = 64 MHz */
/* PREDIV1 configuration: PREDIV1CLK = PLLCLK / HSEPredivValue = 64 / 1 = 64 MHz */
/* Enable HSI and activate PLL with HSi_DIV2 as source */
oscinitstruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
oscinitstruct.HSEState = RCC_HSE_OFF;
oscinitstruct.LSEState = RCC_LSE_OFF;
oscinitstruct.HSIState = RCC_HSI_ON;
oscinitstruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
oscinitstruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
oscinitstruct.PLL.PLLState = RCC_PLL_ON;
oscinitstruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
oscinitstruct.PLL.PLLMUL = RCC_PLL_MUL16;
if (HAL_RCC_OscConfig(&oscinitstruct)!= HAL_OK)
{
/* Initialization Error */
while(1);
}
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
clocks dividers */
clkinitstruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
clkinitstruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
clkinitstruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
clkinitstruct.APB2CLKDivider = RCC_HCLK_DIV1;
clkinitstruct.APB1CLKDivider = RCC_HCLK_DIV2;
if (HAL_RCC_ClockConfig(&clkinitstruct, FLASH_LATENCY_2)!= HAL_OK)
{
/* Initialization Error */
while(1);
}
}
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
void Error_Handler(void)
{
while (1)
{
/* Toggle LED2 with a period of one second */
BSP_LED_Toggle(LED2);
HAL_Delay(1000);
}
}
/**
* @brief Configure the current time and date.
* @param None
* @retval None
*/
static void RTC_AlarmConfig(void)
{
RTC_DateTypeDef sdatestructure;
RTC_TimeTypeDef stimestructure;
RTC_AlarmTypeDef salarmstructure;
/*##-1- Configure the Date #################################################*/
/* Set Date: Tuesday February 18th 2014 */
sdatestructure.Year = 0x14;
sdatestructure.Month = RTC_MONTH_FEBRUARY;
sdatestructure.Date = 0x18;
sdatestructure.WeekDay = RTC_WEEKDAY_TUESDAY;
if(HAL_RTC_SetDate(&RtcHandle,&sdatestructure,RTC_FORMAT_BCD) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/*##-2- Configure the Time #################################################*/
/* Set Time: 02:20:00 */
stimestructure.Hours = 0x02;
stimestructure.Minutes = 0x20;
stimestructure.Seconds = 0x00;
if(HAL_RTC_SetTime(&RtcHandle,&stimestructure,RTC_FORMAT_BCD) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/*##-3- Configure the RTC Alarm peripheral #################################*/
/* Set Alarm to 02:20:30
RTC Alarm Generation: Alarm on Hours, Minutes and Seconds */
salarmstructure.Alarm = RTC_ALARM_A;
salarmstructure.AlarmTime.Hours = 0x02;
salarmstructure.AlarmTime.Minutes = 0x20;
salarmstructure.AlarmTime.Seconds = 0x30;
if(HAL_RTC_SetAlarm_IT(&RtcHandle,&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(&RtcHandle, &stimestructureget, RTC_FORMAT_BIN);
/* Get the RTC current Date */
HAL_RTC_GetDate(&RtcHandle, &sdatestructureget, RTC_FORMAT_BIN);
/* Display time Format : hh:mm:ss */
sprintf((char*)showtime,"%02d:%02d:%02d",stimestructureget.Hours, stimestructureget.Minutes, stimestructureget.Seconds);
}
#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 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) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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