274 lines
8.2 KiB
C
274 lines
8.2 KiB
C
/**
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******************************************************************************
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* @file RTC/RTC_Alarm/Src/main.c
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* @author MCD Application Team
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* @brief This sample code shows how to use STM32F1xx RTC HAL API to configure
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* Time and Date.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2016 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/** @addtogroup STM32F1xx_HAL_Examples
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* @{
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*/
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/** @addtogroup RTC_Alarm
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* RTC handler declaration */
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RTC_HandleTypeDef RtcHandle;
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/* Buffer used for displaying Time */
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uint8_t aShowTime[50] = {0};
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/* Private function prototypes -----------------------------------------------*/
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void SystemClock_Config(void);
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static void RTC_AlarmConfig(void);
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static void RTC_TimeShow(uint8_t* showtime);
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief Main program
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* @param None
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* @retval None
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*/
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int main(void)
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{
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/* STM32F103xB HAL library initialization:
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- Configure the Flash prefetch
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- Systick timer is configured by default as source of time base, but user
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can eventually implement his proper time base source (a general purpose
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timer for example or other time source), keeping in mind that Time base
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duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
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handled in milliseconds basis.
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- Set NVIC Group Priority to 4
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- Low Level Initialization
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*/
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HAL_Init();
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/* Configure the system clock to 64 MHz */
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SystemClock_Config();
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/* Configure LED_GREEN */
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BSP_LED_Init(LED_GREEN);
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/*##-1- Configure the RTC peripheral #######################################*/
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RtcHandle.Instance = RTC;
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/* Configure RTC prescaler and RTC data registers */
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/* RTC configured as follows:
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- Asynch Prediv = Automatic calculation of prediv for 1 sec timebase
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*/
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RtcHandle.Init.AsynchPrediv = RTC_AUTO_1_SECOND;
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if (HAL_RTC_Init(&RtcHandle) != HAL_OK)
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{
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/* Initialization Error */
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Error_Handler();
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}
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/*##-2- Configure Alarm ####################################################*/
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/* Configure RTC Alarm */
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RTC_AlarmConfig();
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/* Infinite loop */
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while (1)
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{
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/*##-3- Display the updated Time #########################################*/
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RTC_TimeShow(aShowTime);
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}
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}
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/**
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* @brief Alarm callback
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* @param hrtc : RTC handle
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* @retval None
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*/
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void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc)
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{
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/* Turn LED_GREEN on: Alarm generation */
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BSP_LED_On(LED_GREEN);
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}
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/**
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* @brief System Clock Configuration
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* The system Clock is configured as follow :
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* System Clock source = PLL (HSI)
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* SYSCLK(Hz) = 64000000
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* HCLK(Hz) = 64000000
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* AHB Prescaler = 1
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* APB1 Prescaler = 2
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* APB2 Prescaler = 1
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* PLLMUL = 16
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* Flash Latency(WS) = 2
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* @param None
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* @retval None
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*/
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void SystemClock_Config(void)
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{
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RCC_ClkInitTypeDef clkinitstruct = {0};
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RCC_OscInitTypeDef oscinitstruct = {0};
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/* Configure PLL ------------------------------------------------------*/
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/* PLL configuration: PLLCLK = (HSI / 2) * PLLMUL = (8 / 2) * 16 = 64 MHz */
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/* PREDIV1 configuration: PREDIV1CLK = PLLCLK / HSEPredivValue = 64 / 1 = 64 MHz */
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/* Enable HSI and activate PLL with HSi_DIV2 as source */
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oscinitstruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
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oscinitstruct.HSEState = RCC_HSE_OFF;
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oscinitstruct.LSEState = RCC_LSE_OFF;
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oscinitstruct.HSIState = RCC_HSI_ON;
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oscinitstruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
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oscinitstruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
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oscinitstruct.PLL.PLLState = RCC_PLL_ON;
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oscinitstruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
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oscinitstruct.PLL.PLLMUL = RCC_PLL_MUL16;
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if (HAL_RCC_OscConfig(&oscinitstruct)!= HAL_OK)
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{
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/* Initialization Error */
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while(1);
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}
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/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
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clocks dividers */
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clkinitstruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
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clkinitstruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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clkinitstruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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clkinitstruct.APB2CLKDivider = RCC_HCLK_DIV1;
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clkinitstruct.APB1CLKDivider = RCC_HCLK_DIV2;
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if (HAL_RCC_ClockConfig(&clkinitstruct, FLASH_LATENCY_2)!= HAL_OK)
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{
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/* Initialization Error */
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while(1);
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}
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}
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/**
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* @brief This function is executed in case of error occurrence.
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* @param None
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* @retval None
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*/
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void Error_Handler(void)
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{
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while (1)
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{
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/* Toggle LED2 with a period of one second */
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BSP_LED_Toggle(LED2);
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HAL_Delay(1000);
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}
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}
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/**
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* @brief Configure the current time and date.
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* @param None
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* @retval None
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*/
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static void RTC_AlarmConfig(void)
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{
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RTC_DateTypeDef sdatestructure;
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RTC_TimeTypeDef stimestructure;
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RTC_AlarmTypeDef salarmstructure;
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/*##-1- Configure the Date #################################################*/
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/* Set Date: Tuesday February 18th 2014 */
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sdatestructure.Year = 0x14;
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sdatestructure.Month = RTC_MONTH_FEBRUARY;
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sdatestructure.Date = 0x18;
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sdatestructure.WeekDay = RTC_WEEKDAY_TUESDAY;
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if(HAL_RTC_SetDate(&RtcHandle,&sdatestructure,RTC_FORMAT_BCD) != HAL_OK)
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{
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/* Initialization Error */
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Error_Handler();
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}
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/*##-2- Configure the Time #################################################*/
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/* Set Time: 02:20:00 */
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stimestructure.Hours = 0x02;
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stimestructure.Minutes = 0x20;
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stimestructure.Seconds = 0x00;
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if(HAL_RTC_SetTime(&RtcHandle,&stimestructure,RTC_FORMAT_BCD) != HAL_OK)
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{
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/* Initialization Error */
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Error_Handler();
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}
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/*##-3- Configure the RTC Alarm peripheral #################################*/
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/* Set Alarm to 02:20:30
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RTC Alarm Generation: Alarm on Hours, Minutes and Seconds */
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salarmstructure.Alarm = RTC_ALARM_A;
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salarmstructure.AlarmTime.Hours = 0x02;
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salarmstructure.AlarmTime.Minutes = 0x20;
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salarmstructure.AlarmTime.Seconds = 0x30;
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if(HAL_RTC_SetAlarm_IT(&RtcHandle,&salarmstructure,RTC_FORMAT_BCD) != HAL_OK)
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{
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/* Initialization Error */
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Error_Handler();
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}
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}
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/**
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* @brief Display the current time.
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* @param showtime : pointer to buffer
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* @retval None
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*/
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static void RTC_TimeShow(uint8_t* showtime)
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{
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RTC_DateTypeDef sdatestructureget;
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RTC_TimeTypeDef stimestructureget;
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/* Get the RTC current Time */
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HAL_RTC_GetTime(&RtcHandle, &stimestructureget, RTC_FORMAT_BIN);
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/* Get the RTC current Date */
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HAL_RTC_GetDate(&RtcHandle, &sdatestructureget, RTC_FORMAT_BIN);
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/* Display time Format : hh:mm:ss */
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sprintf((char*)showtime,"%02d:%02d:%02d",stimestructureget.Hours, stimestructureget.Minutes, stimestructureget.Seconds);
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{
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}
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}
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#endif
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/**
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* @}
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*/
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/**
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* @}
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*/
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