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https://github.com/STMicroelectronics/STM32CubeF4.git
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322 lines
11 KiB
C
322 lines
11 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 STM32F4xx 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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* <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2>>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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 STM32F4xx_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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static 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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/* STM32F4xx HAL library initialization:
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- Configure the Flash prefetch, instruction and Data caches
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- Configure the Systick to generate an interrupt each 1 msec
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- Set NVIC Group Priority to 4
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- Global MSP (MCU Support Package) initialization
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*/
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HAL_Init();
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/* Configure LED1 and LED3 */
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BSP_LED_Init(LED1);
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BSP_LED_Init(LED3);
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/* Configure the system clock to 168 MHz */
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SystemClock_Config();
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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 follow:
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- Hour Format = Format 24
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- Asynch Prediv = Value according to source clock
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- Synch Prediv = Value according to source clock
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- OutPut = Output Disable
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- OutPutPolarity = High Polarity
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- OutPutType = Open Drain */
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RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
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RtcHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV;
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RtcHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV;
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RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
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RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
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RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
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__HAL_RTC_RESET_HANDLE_STATE(&RtcHandle);
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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 LED1 on: Alarm generation */
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BSP_LED_On(LED1);
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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 (HSE)
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* SYSCLK(Hz) = 168000000
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* HCLK(Hz) = 168000000
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* AHB Prescaler = 1
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* APB1 Prescaler = 4
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* APB2 Prescaler = 2
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* HSE Frequency(Hz) = 25000000
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* PLL_M = 25
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* PLL_N = 336
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* PLL_P = 2
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* PLL_Q = 7
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* VDD(V) = 3.3
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* Main regulator output voltage = Scale1 mode
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* Flash Latency(WS) = 5
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* @param None
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* @retval None
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*/
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static void SystemClock_Config(void)
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{
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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RCC_OscInitTypeDef RCC_OscInitStruct;
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/* Enable Power Control clock */
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__HAL_RCC_PWR_CLK_ENABLE();
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/* The voltage scaling allows optimizing the power consumption when the device is
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clocked below the maximum system frequency, to update the voltage scaling value
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regarding system frequency refer to product datasheet. */
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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/* Enable HSE Oscillator and activate PLL with HSE as source */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLM = 25;
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RCC_OscInitStruct.PLL.PLLN = 336;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = 7;
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if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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Error_Handler();
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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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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
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if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
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{
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Error_Handler();
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}
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/* STM32F405x/407x/415x/417x Revision Z devices: prefetch is supported */
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if (HAL_GetREVID() == 0x1001)
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{
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/* Enable the Flash prefetch */
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__HAL_FLASH_PREFETCH_BUFFER_ENABLE();
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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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/* Turn LED3 on */
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BSP_LED_On(LED3);
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while(1)
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{
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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 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.AlarmDateWeekDay = RTC_WEEKDAY_MONDAY;
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salarmstructure.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_DATE;
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salarmstructure.AlarmMask = RTC_ALARMMASK_DATEWEEKDAY;
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salarmstructure.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_NONE;
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salarmstructure.AlarmTime.TimeFormat = RTC_HOURFORMAT12_AM;
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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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salarmstructure.AlarmTime.SubSeconds = 0x56;
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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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/*##-2- 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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/*##-3- 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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stimestructure.TimeFormat = RTC_HOURFORMAT12_AM;
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stimestructure.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
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stimestructure.StoreOperation = RTC_STOREOPERATION_RESET;
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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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}
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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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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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