308 lines
12 KiB
C
308 lines
12 KiB
C
|
/**
|
|||
|
******************************************************************************
|
|||
|
* @file stm32f1xx_hal_timebase_rtc_alarm_template.c
|
|||
|
* @author MCD Application Team
|
|||
|
* @version V1.1.1
|
|||
|
* @date 12-May-2017
|
|||
|
* @brief HAL time base based on the hardware RTC_ALARM.
|
|||
|
*
|
|||
|
* This file override the native HAL time base functions (defined as weak)
|
|||
|
* to use the RTC ALARM for time base generation:
|
|||
|
* + Intializes the RTC peripheral to increment the seconds registers each 1ms
|
|||
|
* + The alarm is configured to assert an interrupt when the RTC reaches 1ms
|
|||
|
* + HAL_IncTick is called at each Alarm event and the time is reset to 00:00:00
|
|||
|
* + HSE (default), LSE or LSI can be selected as RTC clock source
|
|||
|
@verbatim
|
|||
|
==============================================================================
|
|||
|
##### How to use this driver #####
|
|||
|
==============================================================================
|
|||
|
[..]
|
|||
|
This file must be copied to the application folder and modified as follows:
|
|||
|
(#) Rename it to 'stm32f1xx_hal_timebase_rtc_alarm.c'
|
|||
|
(#) Add this file and the RTC HAL drivers to your project and uncomment
|
|||
|
HAL_RTC_MODULE_ENABLED define in stm32f1xx_hal_conf.h
|
|||
|
|
|||
|
[..]
|
|||
|
(@) HAL RTC alarm and HAL RTC wakeup drivers can<EFBFBD>t be used with low power modes:
|
|||
|
The wake up capability of the RTC may be intrusive in case of prior low power mode
|
|||
|
configuration requiring different wake up sources.
|
|||
|
Application/Example behavior is no more guaranteed
|
|||
|
(@) The stm32f1xx_hal_timebase_tim use is recommended for the Applications/Examples
|
|||
|
requiring low power modes
|
|||
|
|
|||
|
@endverbatim
|
|||
|
******************************************************************************
|
|||
|
* @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 "stm32f1xx_hal.h"
|
|||
|
/** @addtogroup STM32F1xx_HAL_Driver
|
|||
|
* @{
|
|||
|
*/
|
|||
|
|
|||
|
/** @defgroup HAL_TimeBase_RTC_Alarm_Template HAL TimeBase RTC Alarm Template
|
|||
|
* @{
|
|||
|
*/
|
|||
|
|
|||
|
/* Private typedef -----------------------------------------------------------*/
|
|||
|
/* Private define ------------------------------------------------------------*/
|
|||
|
|
|||
|
/* Uncomment the line below to select the appropriate RTC Clock source for your application:
|
|||
|
+ RTC_CLOCK_SOURCE_HSE: can be selected for applications requiring timing precision.
|
|||
|
+ RTC_CLOCK_SOURCE_LSE: can be selected for applications with low constraint on timing
|
|||
|
precision.
|
|||
|
+ RTC_CLOCK_SOURCE_LSI: can be selected for applications with low constraint on timing
|
|||
|
precision.
|
|||
|
*/
|
|||
|
#define RTC_CLOCK_SOURCE_HSE
|
|||
|
/* #define RTC_CLOCK_SOURCE_LSE */
|
|||
|
/* #define RTC_CLOCK_SOURCE_LSI */
|
|||
|
|
|||
|
/* Private macro -------------------------------------------------------------*/
|
|||
|
/* Private variables ---------------------------------------------------------*/
|
|||
|
RTC_HandleTypeDef hRTC_Handle;
|
|||
|
/* Private function prototypes -----------------------------------------------*/
|
|||
|
void RTC_Alarm_IRQHandler(void);
|
|||
|
/* Private functions ---------------------------------------------------------*/
|
|||
|
|
|||
|
/**
|
|||
|
* @brief This function configures the RTC_ALARMA as a time base source.
|
|||
|
* The time source is configured to have 1ms time base with a dedicated
|
|||
|
* Tick interrupt priority.
|
|||
|
* @note This function is called automatically at the beginning of program after
|
|||
|
* reset by HAL_Init() or at any time when clock is configured, by HAL_RCC_ClockConfig().
|
|||
|
* @param TickPriority: Tick interrupt priority.
|
|||
|
* @retval HAL status
|
|||
|
*/
|
|||
|
HAL_StatusTypeDef HAL_InitTick (uint32_t TickPriority)
|
|||
|
{
|
|||
|
__IO uint32_t counter = 0U;
|
|||
|
|
|||
|
RCC_OscInitTypeDef RCC_OscInitStruct;
|
|||
|
RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
|
|||
|
|
|||
|
#ifdef RTC_CLOCK_SOURCE_LSE
|
|||
|
/* Configue LSE as RTC clock soucre */
|
|||
|
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
|
|||
|
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
|
|||
|
RCC_OscInitStruct.LSEState = RCC_LSE_ON;
|
|||
|
PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
|
|||
|
#elif defined (RTC_CLOCK_SOURCE_LSI)
|
|||
|
/* Configue LSI as RTC clock soucre */
|
|||
|
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI;
|
|||
|
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
|
|||
|
RCC_OscInitStruct.LSIState = RCC_LSI_ON;
|
|||
|
PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
|
|||
|
#elif defined (RTC_CLOCK_SOURCE_HSE)
|
|||
|
/* Configue HSE as RTC clock soucre */
|
|||
|
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
|
|||
|
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
|
|||
|
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
|
|||
|
PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_HSE_DIV128;
|
|||
|
#else
|
|||
|
#error Please select the RTC Clock source
|
|||
|
#endif /* RTC_CLOCK_SOURCE_LSE */
|
|||
|
|
|||
|
if(HAL_RCC_OscConfig(&RCC_OscInitStruct) == HAL_OK)
|
|||
|
{
|
|||
|
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
|
|||
|
if(HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) == HAL_OK)
|
|||
|
{
|
|||
|
/* Enable RTC Clock */
|
|||
|
__HAL_RCC_RTC_ENABLE();
|
|||
|
|
|||
|
hRTC_Handle.Instance = RTC;
|
|||
|
/* Configure RTC time base to 10Khz */
|
|||
|
hRTC_Handle.Init.AsynchPrediv = (HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_RTC) / 10000) - 1;
|
|||
|
hRTC_Handle.Init.OutPut = RTC_OUTPUTSOURCE_NONE;
|
|||
|
HAL_RTC_Init(&hRTC_Handle);
|
|||
|
|
|||
|
/* Disable the write protection for RTC registers */
|
|||
|
__HAL_RTC_WRITEPROTECTION_DISABLE(&hRTC_Handle);
|
|||
|
|
|||
|
/* Clear flag alarm A */
|
|||
|
__HAL_RTC_ALARM_CLEAR_FLAG(&hRTC_Handle, RTC_FLAG_ALRAF);
|
|||
|
|
|||
|
counter = 0U;
|
|||
|
/* Wait till RTC ALRAF flag is set and if Time out is reached exit */
|
|||
|
while(__HAL_RTC_ALARM_GET_FLAG(&hRTC_Handle, RTC_FLAG_ALRAF) != RESET)
|
|||
|
{
|
|||
|
if(counter++ == SystemCoreClock /48U) /* Timeout = ~ 1s */
|
|||
|
{
|
|||
|
return HAL_ERROR;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
/* Set RTC COUNTER MSB word */
|
|||
|
hRTC_Handle.Instance->ALRH = 0x00U;
|
|||
|
/* Set RTC COUNTER LSB word */
|
|||
|
hRTC_Handle.Instance->ALRL = 0x09U;
|
|||
|
|
|||
|
/* RTC Alarm Interrupt Configuration: EXTI configuration */
|
|||
|
__HAL_RTC_ALARM_EXTI_ENABLE_IT();
|
|||
|
__HAL_RTC_ALARM_EXTI_ENABLE_RISING_EDGE();
|
|||
|
|
|||
|
/* Clear Second and overflow flags */
|
|||
|
CLEAR_BIT(hRTC_Handle.Instance->CRL, (RTC_FLAG_SEC | RTC_FLAG_OW));
|
|||
|
|
|||
|
/* Set RTC COUNTER MSB word */
|
|||
|
hRTC_Handle.Instance->CNTH = 0x00U;
|
|||
|
/* Set RTC COUNTER LSB word */
|
|||
|
hRTC_Handle.Instance->CNTL = 0x00U;
|
|||
|
|
|||
|
/* Configure the Alarm interrupt */
|
|||
|
__HAL_RTC_ALARM_ENABLE_IT(&hRTC_Handle, RTC_IT_ALRA);
|
|||
|
|
|||
|
/* Enable the write protection for RTC registers */
|
|||
|
__HAL_RTC_WRITEPROTECTION_ENABLE(&hRTC_Handle);
|
|||
|
|
|||
|
/* Wait till RTC is in INIT state and if Time out is reached exit */
|
|||
|
counter = 0U;
|
|||
|
while((hRTC_Handle.Instance->CRL & RTC_CRL_RTOFF) == (uint32_t)RESET)
|
|||
|
{
|
|||
|
if(counter++ == SystemCoreClock /48U) /* Timeout = ~ 1s */
|
|||
|
{
|
|||
|
return HAL_ERROR;
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
HAL_NVIC_SetPriority(RTC_Alarm_IRQn, TickPriority, 0U);
|
|||
|
HAL_NVIC_EnableIRQ(RTC_Alarm_IRQn);
|
|||
|
return HAL_OK;
|
|||
|
}
|
|||
|
}
|
|||
|
return HAL_ERROR;
|
|||
|
}
|
|||
|
|
|||
|
/**
|
|||
|
* @brief Suspend Tick increment.
|
|||
|
* @note Disable the tick increment by disabling RTC ALARM interrupt.
|
|||
|
* @param None
|
|||
|
* @retval None
|
|||
|
*/
|
|||
|
void HAL_SuspendTick(void)
|
|||
|
{
|
|||
|
/* Disable RTC ALARM update Interrupt */
|
|||
|
__HAL_RTC_ALARM_DISABLE_IT(&hRTC_Handle, RTC_IT_ALRA);
|
|||
|
}
|
|||
|
|
|||
|
/**
|
|||
|
* @brief Resume Tick increment.
|
|||
|
* @note Enable the tick increment by Enabling RTC ALARM interrupt.
|
|||
|
* @param None
|
|||
|
* @retval None
|
|||
|
*/
|
|||
|
void HAL_ResumeTick(void)
|
|||
|
{
|
|||
|
__IO uint32_t counter = 0U;
|
|||
|
|
|||
|
/* Disable the write protection for RTC registers */
|
|||
|
__HAL_RTC_WRITEPROTECTION_DISABLE(&hRTC_Handle);
|
|||
|
|
|||
|
/* Set RTC COUNTER MSB word */
|
|||
|
hRTC_Handle.Instance->CNTH = 0x00U;
|
|||
|
/* Set RTC COUNTER LSB word */
|
|||
|
hRTC_Handle.Instance->CNTL = 0x00U;
|
|||
|
|
|||
|
/* Clear Second and overflow flags */
|
|||
|
CLEAR_BIT(hRTC_Handle.Instance->CRL, (RTC_FLAG_SEC | RTC_FLAG_OW | RTC_FLAG_ALRAF));
|
|||
|
|
|||
|
/* Enable RTC ALARM Update interrupt */
|
|||
|
__HAL_RTC_ALARM_ENABLE_IT(&hRTC_Handle, RTC_IT_ALRA);
|
|||
|
|
|||
|
/* Enable the write protection for RTC registers */
|
|||
|
__HAL_RTC_WRITEPROTECTION_ENABLE(&hRTC_Handle);
|
|||
|
|
|||
|
/* Wait till RTC is in INIT state and if Time out is reached exit */
|
|||
|
while((hRTC_Handle.Instance->CRL & RTC_CRL_RTOFF) == (uint32_t)RESET)
|
|||
|
{
|
|||
|
if(counter++ == SystemCoreClock /48U) /* Timeout = ~ 1s */
|
|||
|
{
|
|||
|
break;
|
|||
|
}
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
/**
|
|||
|
* @brief ALARM A Event Callback in non blocking mode
|
|||
|
* @note This function is called when RTC_ALARM interrupt took place, inside
|
|||
|
* RTC_ALARM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment
|
|||
|
* a global variable "uwTick" used as application time base.
|
|||
|
* @param hrtc : RTC handle
|
|||
|
* @retval None
|
|||
|
*/
|
|||
|
void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc)
|
|||
|
{
|
|||
|
__IO uint32_t counter = 0U;
|
|||
|
|
|||
|
HAL_IncTick();
|
|||
|
|
|||
|
__HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
|
|||
|
|
|||
|
/* Set RTC COUNTER MSB word */
|
|||
|
WRITE_REG(hrtc->Instance->CNTH, 0x00U);
|
|||
|
/* Set RTC COUNTER LSB word */
|
|||
|
WRITE_REG(hrtc->Instance->CNTL, 0x00U);
|
|||
|
|
|||
|
/* Clear Second and overflow flags */
|
|||
|
CLEAR_BIT(hrtc->Instance->CRL, (RTC_FLAG_SEC | RTC_FLAG_OW));
|
|||
|
|
|||
|
/* Enable the write protection for RTC registers */
|
|||
|
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
|
|||
|
|
|||
|
/* Wait till RTC is in INIT state and if Time out is reached exit */
|
|||
|
while((hrtc->Instance->CRL & RTC_CRL_RTOFF) == (uint32_t)RESET)
|
|||
|
{
|
|||
|
if(counter++ == SystemCoreClock /48U) /* Timeout = ~ 1s */
|
|||
|
{
|
|||
|
break;
|
|||
|
}
|
|||
|
}
|
|||
|
}
|
|||
|
|
|||
|
/**
|
|||
|
* @brief This function handles RTC ALARM interrupt request.
|
|||
|
* @retval None
|
|||
|
*/
|
|||
|
void RTC_Alarm_IRQHandler(void)
|
|||
|
{
|
|||
|
HAL_RTC_AlarmIRQHandler(&hRTC_Handle);
|
|||
|
}
|
|||
|
|
|||
|
/**
|
|||
|
* @}
|
|||
|
*/
|
|||
|
|
|||
|
/**
|
|||
|
* @}
|
|||
|
*/
|
|||
|
|
|||
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|