mirror of
https://github.com/STMicroelectronics/STM32CubeF4.git
synced 2025-05-02 22:17:06 +08:00
318 lines
11 KiB
C
318 lines
11 KiB
C
/**
|
|
******************************************************************************
|
|
* @file RTC/RTC_Tamper/Src/main.c
|
|
* @author MCD Application Team
|
|
* @brief This sample code shows how to use STM32F4xx RTC HAL API to write/read
|
|
* data to/from RTC Backup data registers and demonstrates the Tamper
|
|
* detection feature.
|
|
******************************************************************************
|
|
* @attention
|
|
*
|
|
* <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
|
|
*
|
|
* 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"
|
|
|
|
/** @addtogroup STM32F4xx_HAL_Examples
|
|
* @{
|
|
*/
|
|
|
|
/** @addtogroup RTC_Tamper
|
|
* @{
|
|
*/
|
|
|
|
/* Private typedef -----------------------------------------------------------*/
|
|
/* Private define ------------------------------------------------------------*/
|
|
/* Private macro -------------------------------------------------------------*/
|
|
/* Private variables ---------------------------------------------------------*/
|
|
/* RTC handler declaration */
|
|
RTC_HandleTypeDef RtcHandle;
|
|
|
|
__IO FlagStatus TamperStatus = RESET;
|
|
|
|
/* Backup registers table */
|
|
uint32_t aBKPDataReg[BACKUP_COUNT] =
|
|
{
|
|
RTC_BKP_DR0, RTC_BKP_DR1, RTC_BKP_DR2,
|
|
RTC_BKP_DR3, RTC_BKP_DR4, RTC_BKP_DR5,
|
|
RTC_BKP_DR6, RTC_BKP_DR7, RTC_BKP_DR8,
|
|
RTC_BKP_DR9, RTC_BKP_DR10, RTC_BKP_DR11,
|
|
RTC_BKP_DR12, RTC_BKP_DR13, RTC_BKP_DR14,
|
|
RTC_BKP_DR15, RTC_BKP_DR16, RTC_BKP_DR17,
|
|
RTC_BKP_DR18, RTC_BKP_DR19
|
|
};
|
|
|
|
|
|
/* Private function prototypes -----------------------------------------------*/
|
|
static void SystemClock_Config(void);
|
|
|
|
/* Private functions ---------------------------------------------------------*/
|
|
|
|
/**
|
|
* @brief Main program
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
int main(void)
|
|
{
|
|
uint32_t index = 0;
|
|
RTC_TamperTypeDef stamperstructure;
|
|
|
|
/* STM32F4xx 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 180 MHz */
|
|
SystemClock_Config();
|
|
|
|
/* Configure LED1 and LED3 */
|
|
BSP_LED_Init(LED1);
|
|
BSP_LED_Init(LED3);
|
|
|
|
/* Configure User push-button button */
|
|
BSP_PB_Init(BUTTON_USER,BUTTON_MODE_GPIO);
|
|
/*##-1- Configure the RTC peripheral #######################################*/
|
|
/* Configure RTC prescaler and RTC data registers */
|
|
/* RTC configured as follows:
|
|
- Hour Format = Format 24
|
|
- Asynch Prediv = Value according to source clock
|
|
- Synch Prediv = Value according to source clock
|
|
- OutPut = Output Disable
|
|
- OutPutPolarity = High Polarity
|
|
- OutPutType = Open Drain */
|
|
RtcHandle.Instance = RTC;
|
|
RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
|
|
RtcHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV;
|
|
RtcHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV;
|
|
RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
|
|
RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
|
|
RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
|
|
__HAL_RTC_RESET_HANDLE_STATE(&RtcHandle);
|
|
if (HAL_RTC_Init(&RtcHandle) != HAL_OK)
|
|
{
|
|
/* Initialization Error */
|
|
Error_Handler();
|
|
}
|
|
|
|
/*##-2- Configure RTC Tamper ###############################################*/
|
|
stamperstructure.Tamper = RTC_TAMPER_1;
|
|
/* Use PC13 as Tamper 1 with interrupt mode */
|
|
stamperstructure.PinSelection = RTC_TAMPERPIN_PC13;
|
|
stamperstructure.Trigger = RTC_TAMPERTRIGGER_FALLINGEDGE;
|
|
stamperstructure.Filter = RTC_TAMPERFILTER_DISABLE;
|
|
stamperstructure.SamplingFrequency = RTC_TAMPERSAMPLINGFREQ_RTCCLK_DIV32768;
|
|
stamperstructure.PrechargeDuration = RTC_TAMPERPRECHARGEDURATION_1RTCCLK;
|
|
stamperstructure.TamperPullUp = RTC_TAMPER_PULLUP_ENABLE;
|
|
stamperstructure.TimeStampOnTamperDetection = RTC_TIMESTAMPONTAMPERDETECTION_DISABLE;
|
|
|
|
if (HAL_RTCEx_SetTamper_IT(&RtcHandle, &stamperstructure) != HAL_OK)
|
|
{
|
|
/* Initialization Error */
|
|
Error_Handler();
|
|
}
|
|
|
|
/* Clear the Tamper interrupt pending bit */
|
|
__HAL_RTC_TAMPER_CLEAR_FLAG(&RtcHandle,RTC_FLAG_TAMP1F);
|
|
|
|
/*##-3- Write Data on the Back Up registers ################################*/
|
|
for (index = 0; index < BACKUP_COUNT; index++)
|
|
{
|
|
HAL_RTCEx_BKUPWrite(&RtcHandle, aBKPDataReg[index], 0xDF59 + (index * 0x5A));
|
|
}
|
|
|
|
/*##-4- Check Data is stored on the Back Up registers ######################*/
|
|
for (index = 0; index < BACKUP_COUNT; index++)
|
|
{
|
|
if (HAL_RTCEx_BKUPRead(&RtcHandle, aBKPDataReg[index]) != (0xDF59 + (index * 0x5A)))
|
|
{
|
|
Error_Handler();
|
|
}
|
|
}
|
|
|
|
/*##-5- Wait for the tamper button is pressed ##############################*/
|
|
while (TamperStatus != SET)
|
|
{
|
|
/* Toggle LED1 with a period of 1s */
|
|
BSP_LED_Toggle(LED1);
|
|
|
|
/* Delay */
|
|
HAL_Delay(1000);
|
|
}
|
|
|
|
/*##-6- Deactivate the tamper ##############################*/
|
|
HAL_RTCEx_DeactivateTamper(&RtcHandle, RTC_TAMPER_1);
|
|
|
|
/*##-7- Check Data is cleared on the Back Up registers #####################*/
|
|
for (index = 0; index < BACKUP_COUNT; index++)
|
|
{
|
|
if (HAL_RTCEx_BKUPRead(&RtcHandle, aBKPDataReg[index]) != 0x00)
|
|
{
|
|
Error_Handler();
|
|
}
|
|
}
|
|
|
|
/* Infinite loop */
|
|
while (1)
|
|
{
|
|
/* Turn LED1 on */
|
|
BSP_LED_Toggle(LED1);
|
|
|
|
/* Delay */
|
|
HAL_Delay(100);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief System Clock Configuration
|
|
* The system Clock is configured as follow :
|
|
* System Clock source = PLL (HSE)
|
|
* SYSCLK(Hz) = 180000000
|
|
* HCLK(Hz) = 180000000
|
|
* AHB Prescaler = 1
|
|
* APB1 Prescaler = 4
|
|
* APB2 Prescaler = 2
|
|
* HSE Frequency(Hz) = 8000000
|
|
* PLL_M = 8
|
|
* PLL_N = 360
|
|
* PLL_P = 2
|
|
* PLL_Q = 7
|
|
* VDD(V) = 3.3
|
|
* Main regulator output voltage = Scale1 mode
|
|
* Flash Latency(WS) = 5
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
static void SystemClock_Config(void)
|
|
{
|
|
RCC_ClkInitTypeDef RCC_ClkInitStruct;
|
|
RCC_OscInitTypeDef RCC_OscInitStruct;
|
|
|
|
/* Enable Power Control clock */
|
|
__HAL_RCC_PWR_CLK_ENABLE();
|
|
|
|
/* The voltage scaling allows optimizing the power consumption when the device is
|
|
clocked below the maximum system frequency, to update the voltage scaling value
|
|
regarding system frequency refer to product datasheet. */
|
|
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
|
|
|
|
/* Enable HSE Oscillator and activate PLL with HSE as source */
|
|
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
|
|
RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
|
|
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
|
|
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
|
|
RCC_OscInitStruct.PLL.PLLM = 8;
|
|
RCC_OscInitStruct.PLL.PLLN = 360;
|
|
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
|
|
RCC_OscInitStruct.PLL.PLLQ = 7;
|
|
if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
|
|
{
|
|
/* Initialization Error */
|
|
Error_Handler();
|
|
}
|
|
|
|
if(HAL_PWREx_EnableOverDrive() != HAL_OK)
|
|
{
|
|
/* Initialization Error */
|
|
Error_Handler();
|
|
}
|
|
|
|
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
|
|
clocks dividers */
|
|
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
|
|
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
|
|
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
|
|
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
|
|
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
|
|
if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
|
|
{
|
|
/* Initialization Error */
|
|
Error_Handler();
|
|
}
|
|
}
|
|
/**
|
|
* @brief This function is executed in case of error occurrence.
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
void Error_Handler(void)
|
|
{
|
|
/* Turn LED3 on */
|
|
BSP_LED_On(LED3);
|
|
while (1)
|
|
{
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Tamper event callback function
|
|
* @param RTC handle
|
|
* @retval None
|
|
*/
|
|
void HAL_RTCEx_Tamper1EventCallback(RTC_HandleTypeDef *hrtc)
|
|
{
|
|
}
|
|
|
|
#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****/
|