STM32开发笔记76: 初始化RTC后死机的原因
单片机型号：STM32L053R8T6
项目开发中只要初始化RTC，则系统死机。其初始化步骤可参考日志：STM32开发笔记44：RTC驱动程序的移植。按照日志STM32开发笔记75: 使用STM32CubeMX点亮一个LED使用STM32CubeMX直接生成程序则运行正常。
分析原因在于，少移植了2个函数：HAL_RTC_MspInit和HAL_RTC_MspDeInit。这两个函数的实现非常简单，可以靠STM32CubeMX直接生成。
void HAL_RTC_MspInit(RTC_HandleTypeDef *hrtc)
{
__HAL_RCC_RTC_ENABLE();
HAL_NVIC_SetPriority(RTC_IRQn, 0x0, 0);
HAL_NVIC_EnableIRQ(RTC_IRQn);
}void HAL_RTC_MspDeInit(RTC_HandleTypeDef *hrtc)
{
__HAL_RCC_RTC_DISABLE();
}将这2个函数直接植入rtc.cpp即可，这样就得到了完善的rtc.h和rtc.cpp。
#ifndef RTC_H_
#define RTC_H_
#include "stdint.h"
#if (defined STM32F091xC) || (defined STM32F070x6)
#include "stm32f0xx_hal.h"
#elif (defined STM32L053xx)
#include "stm32l0xx_hal.h"
#endif
#ifdef __cplusplus
extern "C"{
class CRtc
{
public:
RTC_HandleTypeDef hRTC;
public:
CRtc(void);
void EnterStopRtcMode(uint8_t u8_Second);
};
}
#endif
#endif
#include "include.h"
RTC_HandleTypeDef* pRTC = NULL;
CRtc::CRtc(void)
{
this->hRTC.Instance = RTC;
pRTC = &this->hRTC;
this->hRTC.Init.HourFormat = RTC_HOURFORMAT_24;
this->hRTC.Init.AsynchPrediv = 124;
this->hRTC.Init.SynchPrediv = 295;
this->hRTC.Init.OutPut = RTC_OUTPUT_DISABLE;
this->hRTC.Init.OutPutRemap = RTC_OUTPUT_REMAP_NONE; //不进行输出引脚重映射
this->hRTC.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
this->hRTC.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
if (HAL_RTC_Init(&this->hRTC) != HAL_OK)
{
Target.ErrorHandler(__FILE__, __LINE__);
}
}
void CRtc::EnterStopRtcMode(uint8_t u8_Second)
{
HAL_RTCEx_DeactivateWakeUpTimer(&hRTC);
HAL_RTCEx_SetWakeUpTimer_IT(&hRTC, (uint32_t)u8_Second * 2312, RTC_WAKEUPCLOCK_RTCCLK_DIV16);
HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
}
void RTC_IRQHandler(void)
{
HAL_RTCEx_WakeUpTimerIRQHandler(pRTC);
}
void HAL_RTC_MspInit(RTC_HandleTypeDef *hrtc)
{
__HAL_RCC_RTC_ENABLE();
HAL_NVIC_SetPriority(RTC_IRQn, 0x0, 0);
HAL_NVIC_EnableIRQ(RTC_IRQn);
}
void HAL_RTC_MspDeInit(RTC_HandleTypeDef *hrtc)
{
__HAL_RCC_RTC_DISABLE();
}
除此之外，我们还需对RTC进行配置，和设置中断服务处理函数。
/**
******************************************************************************
* @file stm32l0xx_hal_conf.h
* @author MCD Application Team
* @brief HAL configuration template file.
* This file should be copied to the application folder and renamed
* to stm32l0xx_hal_conf.h.
******************************************************************************
* @attention
*
* © Copyright (c) 2016 STMicroelectronics.
* All rights reserved.
*
* 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
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32L0xx_HAL_CONF_H
#define __STM32L0xx_HAL_CONF_H
#ifdef __cplusplus
extern "C" {
#endif
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/* ########################## Module Selection ############################## */
/**
* @brief This is the list of modules to be used in the HAL driver
*/
#define HAL_MODULE_ENABLED
/*#define HAL_ADC_MODULE_ENABLED */
/*#define HAL_CRYP_MODULE_ENABLED */
/*#define HAL_COMP_MODULE_ENABLED */
/*#define HAL_CRC_MODULE_ENABLED */
/*#define HAL_CRYP_MODULE_ENABLED */
/*#define HAL_DAC_MODULE_ENABLED */
/*#define HAL_FIREWALL_MODULE_ENABLED */
/*#define HAL_I2S_MODULE_ENABLED */
#define HAL_IWDG_MODULE_ENABLED
/*#define HAL_LCD_MODULE_ENABLED */
/*#define HAL_LPTIM_MODULE_ENABLED */
/*#define HAL_RNG_MODULE_ENABLED */
#define HAL_RTC_MODULE_ENABLED
/*#define HAL_SPI_MODULE_ENABLED */
#define HAL_TIM_MODULE_ENABLED
/*#define HAL_TSC_MODULE_ENABLED */
#define HAL_UART_MODULE_ENABLED
/*#define HAL_USART_MODULE_ENABLED */
/*#define HAL_IRDA_MODULE_ENABLED */
/*#define HAL_SMARTCARD_MODULE_ENABLED */
/*#define HAL_SMBUS_MODULE_ENABLED */
/*#define HAL_WWDG_MODULE_ENABLED */
/*#define HAL_PCD_MODULE_ENABLED */
/*#define HAL_EXTI_MODULE_ENABLED */
#define HAL_GPIO_MODULE_ENABLED
#define HAL_DMA_MODULE_ENABLED
#define HAL_I2C_MODULE_ENABLED
#define HAL_RCC_MODULE_ENABLED
#define HAL_FLASH_MODULE_ENABLED
#define HAL_PWR_MODULE_ENABLED
#define HAL_CORTEX_MODULE_ENABLED
/* ########################## Oscillator Values adaptation ####################*/
/**
* @brief Adjust the value of External High Speed oscillator (HSE) used in your application.
* This value is used by the RCC HAL module to compute the system frequency
* (when HSE is used as system clock source, directly or through the PLL).
*/
#if !defined (HSE_VALUE)
#define HSE_VALUE ((uint32_t)12000000U) /*!< Value of the External oscillator in Hz */
#endif /* HSE_VALUE */
#if !defined (HSE_STARTUP_TIMEOUT)
#define HSE_STARTUP_TIMEOUT ((uint32_t)100U) /*!< Time out for HSE start up, in ms */
#endif /* HSE_STARTUP_TIMEOUT */
/**
* @brief Internal Multiple Speed oscillator (MSI) default value.
* This value is the default MSI range value after Reset.
*/
#if !defined (MSI_VALUE)
#define MSI_VALUE ((uint32_t)2097000U) /*!< Value of the Internal oscillator in Hz*/
#endif /* MSI_VALUE */
/**
* @brief Internal High Speed oscillator (HSI) value.
* This value is used by the RCC HAL module to compute the system frequency
* (when HSI is used as system clock source, directly or through the PLL).
*/
#if !defined (HSI_VALUE)
#define HSI_VALUE ((uint32_t)16000000U) /*!< Value of the Internal oscillator in Hz*/
#endif /* HSI_VALUE */
/**
* @brief Internal High Speed oscillator for USB (HSI48) value.
*/
#if !defined (HSI48_VALUE)
#define HSI48_VALUE ((uint32_t)48000000U) /*!< Value of the Internal High Speed oscillator for USB in Hz.
The real value may vary depending on the variations
in voltage and temperature. */
#endif /* HSI48_VALUE */
/**
* @brief Internal Low Speed oscillator (LSI) value.
*/
#if !defined (LSI_VALUE)
#define LSI_VALUE ((uint32_t)37000U) /*!< LSI Typical Value in Hz*/
#endif /* LSI_VALUE */ /*!< Value of the Internal Low Speed oscillator in Hz
The real value may vary depending on the variations
in voltage and temperature.*/
/**
* @brief External Low Speed oscillator (LSE) value.
* This value is used by the UART, RTC HAL module to compute the system frequency
*/
#if !defined (LSE_VALUE)
#define LSE_VALUE ((uint32_t)32768U) /*!< Value of the External oscillator in Hz*/
#endif /* LSE_VALUE */
#if !defined (LSE_STARTUP_TIMEOUT)
#define LSE_STARTUP_TIMEOUT ((uint32_t)5000U) /*!< Time out for LSE start up, in ms */
#endif /* LSE_STARTUP_TIMEOUT */
/* Tip: To avoid modifying this file each time you need to use different HSE,
=== you can define the HSE value in your toolchain compiler preprocessor. */
/* ########################### System Configuration ######################### */
/**
* @brief This is the HAL system configuration section
*/
#define VDD_VALUE ((uint32_t)3300U) /*!< Value of VDD in mv */
#define TICK_INT_PRIORITY ((uint32_t)0U) /*!< tick interrupt priority */
#define USE_RTOS 0U
#define PREFETCH_ENABLE 0U
#define PREREAD_ENABLE 1U
#define BUFFER_CACHE_DISABLE 0U
/* ########################## Assert Selection ############################## */
/**
* @brief Uncomment the line below to expanse the "assert_param" macro in the
* HAL drivers code
*/
/* #define USE_FULL_ASSERT 1U */
/* Includes ------------------------------------------------------------------*/
/**
* @brief Include module's header file
*/
#ifdef HAL_RCC_MODULE_ENABLED
#include "stm32l0xx_hal_rcc.h"
#endif /* HAL_RCC_MODULE_ENABLED */
#ifdef HAL_EXTI_MODULE_ENABLED
#include "stm32l0xx_hal_exti.h"
#endif /* HAL_EXTI_MODULE_ENABLED */
#ifdef HAL_GPIO_MODULE_ENABLED
#include "stm32l0xx_hal_gpio.h"
#endif /* HAL_GPIO_MODULE_ENABLED */
#ifdef HAL_DMA_MODULE_ENABLED
#include "stm32l0xx_hal_dma.h"
#endif /* HAL_DMA_MODULE_ENABLED */
#ifdef HAL_CORTEX_MODULE_ENABLED
#include "stm32l0xx_hal_cortex.h"
#endif /* HAL_CORTEX_MODULE_ENABLED */
#ifdef HAL_ADC_MODULE_ENABLED
#include "stm32l0xx_hal_adc.h"
#endif /* HAL_ADC_MODULE_ENABLED */
#ifdef HAL_COMP_MODULE_ENABLED
#include "stm32l0xx_hal_comp.h"
#endif /* HAL_COMP_MODULE_ENABLED */
#ifdef HAL_CRC_MODULE_ENABLED
#include "stm32l0xx_hal_crc.h"
#endif /* HAL_CRC_MODULE_ENABLED */
#ifdef HAL_CRYP_MODULE_ENABLED
#include "stm32l0xx_hal_cryp.h"
#endif /* HAL_CRYP_MODULE_ENABLED */
#ifdef HAL_DAC_MODULE_ENABLED
#include "stm32l0xx_hal_dac.h"
#endif /* HAL_DAC_MODULE_ENABLED */
#ifdef HAL_FIREWALL_MODULE_ENABLED
#include "stm32l0xx_hal_firewall.h"
#endif /* HAL_FIREWALL_MODULE_ENABLED */
#ifdef HAL_FLASH_MODULE_ENABLED
#include "stm32l0xx_hal_flash.h"
#endif /* HAL_FLASH_MODULE_ENABLED */
#ifdef HAL_I2C_MODULE_ENABLED
#include "stm32l0xx_hal_i2c.h"
#endif /* HAL_I2C_MODULE_ENABLED */
#ifdef HAL_I2S_MODULE_ENABLED
#include "stm32l0xx_hal_i2s.h"
#endif /* HAL_I2S_MODULE_ENABLED */
#ifdef HAL_IWDG_MODULE_ENABLED
#include "stm32l0xx_hal_iwdg.h"
#endif /* HAL_IWDG_MODULE_ENABLED */
#ifdef HAL_LCD_MODULE_ENABLED
#include "stm32l0xx_hal_lcd.h"
#endif /* HAL_LCD_MODULE_ENABLED */
#ifdef HAL_LPTIM_MODULE_ENABLED
#include "stm32l0xx_hal_lptim.h"
#endif /* HAL_LPTIM_MODULE_ENABLED */
#ifdef HAL_PWR_MODULE_ENABLED
#include "stm32l0xx_hal_pwr.h"
#endif /* HAL_PWR_MODULE_ENABLED */
#ifdef HAL_RNG_MODULE_ENABLED
#include "stm32l0xx_hal_rng.h"
#endif /* HAL_RNG_MODULE_ENABLED */
#ifdef HAL_RTC_MODULE_ENABLED
#include "stm32l0xx_hal_rtc.h"
#endif /* HAL_RTC_MODULE_ENABLED */
#ifdef HAL_SPI_MODULE_ENABLED
#include "stm32l0xx_hal_spi.h"
#endif /* HAL_SPI_MODULE_ENABLED */
#ifdef HAL_TIM_MODULE_ENABLED
#include "stm32l0xx_hal_tim.h"
#endif /* HAL_TIM_MODULE_ENABLED */
#ifdef HAL_TSC_MODULE_ENABLED
#include "stm32l0xx_hal_tsc.h"
#endif /* HAL_TSC_MODULE_ENABLED */
#ifdef HAL_UART_MODULE_ENABLED
#include "stm32l0xx_hal_uart.h"
#endif /* HAL_UART_MODULE_ENABLED */
#ifdef HAL_USART_MODULE_ENABLED
#include "stm32l0xx_hal_usart.h"
#endif /* HAL_USART_MODULE_ENABLED */
#ifdef HAL_IRDA_MODULE_ENABLED
#include "stm32l0xx_hal_irda.h"
#endif /* HAL_IRDA_MODULE_ENABLED */
#ifdef HAL_SMARTCARD_MODULE_ENABLED
#include "stm32l0xx_hal_smartcard.h"
#endif /* HAL_SMARTCARD_MODULE_ENABLED */
#ifdef HAL_SMBUS_MODULE_ENABLED
#include "stm32l0xx_hal_smbus.h"
#endif /* HAL_SMBUS_MODULE_ENABLED */
#ifdef HAL_WWDG_MODULE_ENABLED
#include "stm32l0xx_hal_wwdg.h"
#endif /* HAL_WWDG_MODULE_ENABLED */
#ifdef HAL_PCD_MODULE_ENABLED
#include "stm32l0xx_hal_pcd.h"
#endif /* HAL_PCD_MODULE_ENABLED */
/* Exported macro ------------------------------------------------------------*/
#ifdef USE_FULL_ASSERT
/**
* @brief The assert_param macro is used for function's parameters check.
* @param expr: If expr is false, it calls assert_failed function
* which reports the name of the source file and the source
* line number of the call that failed.
* If expr is true, it returns no value.
* @retval None
*/
#define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
/* Exported functions ------------------------------------------------------- */
void assert_failed(uint8_t* file, uint32_t line);
#else
#define assert_param(expr) ((void)0U)
#endif /* USE_FULL_ASSERT */
#ifdef __cplusplus
}
#endif
#endif /* __STM32L0xx_HAL_CONF_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file stm32l0xx_it.h
* @brief This file contains the headers of the interrupt handlers.
******************************************************************************
* @attention
*
* © Copyright (c) 2019 STMicroelectronics.
* All rights reserved.
*
* This software component is licensed by ST under Ultimate Liberty license
* SLA0044, the "License"; You may not use this file except in compliance with
* the License. You may obtain a copy of the License at:
* www.st.com/SLA0044
*
******************************************************************************
*/
/* USER CODE END Header */
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32L0xx_IT_H
#define __STM32L0xx_IT_H
#ifdef __cplusplus
extern "C" {
#endif
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Exported types ------------------------------------------------------------*/
/* USER CODE BEGIN ET */
/* USER CODE END ET */
/* Exported constants --------------------------------------------------------*/
/* USER CODE BEGIN EC */
/* USER CODE END EC */
/* Exported macro ------------------------------------------------------------*/
/* USER CODE BEGIN EM */
/* USER CODE END EM */
/* Exported functions prototypes ---------------------------------------------*/
void NMI_Handler(void);
void HardFault_Handler(void);
void TIM2_IRQHandler(void);
void USART1_IRQHandler(void);
void USART2_IRQHandler(void);
void RTC_IRQHandler(void);
/* USER CODE BEGIN EFP */
/* USER CODE END EFP */
#ifdef __cplusplus
}
#endif
#endif /* __STM32L0xx_IT_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
至此，我们就得到了完善的RTC驱动程序。
原创性文章，转载请注明出处CSDN：http://blog.csdn.net/qingwufeiyang12346。