mirror of
https://github.com/STMicroelectronics/STM32CubeF0.git
synced 2025-04-30 13:48:55 +08:00
278 lines
8.4 KiB
C
278 lines
8.4 KiB
C
/**
|
|
******************************************************************************
|
|
* @file RTC/RTC_Tamper/Src/main.c
|
|
* @author MCD Application Team
|
|
* @brief This sample code shows how to use STM32F0xx RTC HAL API to write/read
|
|
* data to/from RTC Backup data registers and demonstrates the Tamper
|
|
* detection feature.
|
|
******************************************************************************
|
|
* @attention
|
|
*
|
|
* Copyright (c) 2016 STMicroelectronics.
|
|
* All rights reserved.
|
|
*
|
|
* This software is licensed under terms that can be found in the LICENSE file
|
|
* in the root directory of this software component.
|
|
* If no LICENSE file comes with this software, it is provided AS-IS.
|
|
*
|
|
******************************************************************************
|
|
*/
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "main.h"
|
|
|
|
/** @addtogroup STM32F0xx_HAL_Examples
|
|
* @{
|
|
*/
|
|
|
|
/** @addtogroup RTC_Tamper
|
|
* @{
|
|
*/
|
|
|
|
/* Private typedef -----------------------------------------------------------*/
|
|
/* Private define ------------------------------------------------------------*/
|
|
/* Private macro -------------------------------------------------------------*/
|
|
/* Private variables ---------------------------------------------------------*/
|
|
/* RTC handler declaration */
|
|
RTC_HandleTypeDef RtcHandle;
|
|
|
|
__IO FlagStatus TamperStatus;
|
|
|
|
/* Backup registers table */
|
|
uint32_t aBKPDataReg[BACKUP_COUNT] =
|
|
{
|
|
RTC_BKP_DR0, RTC_BKP_DR1, RTC_BKP_DR2,
|
|
RTC_BKP_DR3, RTC_BKP_DR4
|
|
};
|
|
|
|
|
|
/* Private function prototypes -----------------------------------------------*/
|
|
void SystemClock_Config(void);
|
|
|
|
/* Private functions ---------------------------------------------------------*/
|
|
|
|
/**
|
|
* @brief Main program
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
int main(void)
|
|
{
|
|
GPIO_InitTypeDef GPIO_InitStruct;
|
|
uint32_t index = 0;
|
|
RTC_TamperTypeDef stamperstructure;
|
|
|
|
/* STM32F0xx 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.
|
|
- Low Level Initialization
|
|
*/
|
|
HAL_Init();
|
|
|
|
/* Configure the system clock to 48 MHz */
|
|
SystemClock_Config();
|
|
|
|
/* Configure LED3 */
|
|
BSP_LED_Init(LED3);
|
|
|
|
/* Configure PA.00 (Arduino A0) button */
|
|
GPIO_InitStruct.Pin = GPIO_PIN_0;
|
|
GPIO_InitStruct.Pull = GPIO_PULLUP;
|
|
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
|
|
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
|
|
|
|
/* Enable GPIOA clock */
|
|
__HAL_RCC_GPIOA_CLK_ENABLE();
|
|
|
|
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
|
|
/*##-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;
|
|
|
|
if (HAL_RTC_Init(&RtcHandle) != HAL_OK)
|
|
{
|
|
/* Initialization Error */
|
|
Error_Handler();
|
|
}
|
|
|
|
/*##-2- Configure RTC Tamper ###############################################*/
|
|
stamperstructure.Tamper = RTC_TAMPER_2;
|
|
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_TAMP2F);
|
|
|
|
/*##-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();
|
|
}
|
|
}
|
|
|
|
/* Reset flag after writing of backup register in order to wait for new button press */
|
|
TamperStatus = RESET;
|
|
|
|
/*##-5- Wait for the tamper button is pressed ##############################*/
|
|
while (TamperStatus != SET)
|
|
{
|
|
/* Toggle LED3 with a period of 1s */
|
|
BSP_LED_Toggle(LED3);
|
|
|
|
/* Delay */
|
|
HAL_Delay(1000);
|
|
}
|
|
|
|
/*##-6- Deactivate the tamper ##############################*/
|
|
HAL_RTCEx_DeactivateTamper(&RtcHandle, RTC_TAMPER_2);
|
|
|
|
/*##-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 LED3 on */
|
|
BSP_LED_Toggle(LED3);
|
|
|
|
/* Delay */
|
|
HAL_Delay(100);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief System Clock Configuration
|
|
* The system Clock is configured as follow :
|
|
* System Clock source = PLL (HSI/2)
|
|
* SYSCLK(Hz) = 48000000
|
|
* HCLK(Hz) = 48000000
|
|
* AHB Prescaler = 1
|
|
* APB1 Prescaler = 1
|
|
* HSI Frequency(Hz) = 8000000
|
|
* PREDIV = 1
|
|
* PLLMUL = 12
|
|
* Flash Latency(WS) = 1
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
void SystemClock_Config(void)
|
|
{
|
|
RCC_ClkInitTypeDef RCC_ClkInitStruct;
|
|
RCC_OscInitTypeDef RCC_OscInitStruct;
|
|
|
|
/* No HSE Oscillator on Nucleo, Activate PLL with HSI/2 as source */
|
|
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_NONE;
|
|
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
|
|
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
|
|
RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
|
|
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL12;
|
|
if (HAL_RCC_OscConfig(&RCC_OscInitStruct)!= HAL_OK)
|
|
{
|
|
/* Initialization Error */
|
|
while(1);
|
|
}
|
|
|
|
/* Select PLL as system clock source and configure the HCLK, PCLK1 clocks dividers */
|
|
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1);
|
|
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
|
|
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
|
|
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
|
|
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1)!= HAL_OK)
|
|
{
|
|
/* Initialization Error */
|
|
while(1);
|
|
}
|
|
}
|
|
/**
|
|
* @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_Tamper2EventCallback(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
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|