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149 lines
4.7 KiB
149 lines
4.7 KiB
/*******************************************************************************
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* @file low_power.c
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* @author MCD Application Team
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* @version V1.1.2
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* @date 08-September-2017
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* @brief driver for low power
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2017 STMicroelectronics International N.V.
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* All rights reserved.</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted, provided that the following conditions are met:
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*
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* 1. Redistribution 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 other
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* contributors to this software may be used to endorse or promote products
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* derived from this software without specific written permission.
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* 4. This software, including modifications and/or derivative works of this
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* software, must execute solely and exclusively on microcontroller or
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* microprocessor devices manufactured by or for STMicroelectronics.
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* 5. Redistribution and use of this software other than as permitted under
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* this license is void and will automatically terminate your rights under
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* this license.
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*
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* THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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* PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
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* RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
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* SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* 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 "hw.h"
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#include "low_power.h"
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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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/**
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* \brief Flag to indicate if MCU can go to low power mode
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* When 0, MCU is authorized to go in low power mode
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*/
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static uint32_t LowPower_State = 0;
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/* Private function prototypes -----------------------------------------------*/
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/* Exported functions ---------------------------------------------------------*/
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/**
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* \brief API to set flag allowing power mode
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*
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* \param [IN] enum e_LOW_POWER_State_Id_t
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*/
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void LowPower_Disable( e_LOW_POWER_State_Id_t state )
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{
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BACKUP_PRIMASK();
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DISABLE_IRQ( );
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LowPower_State |= state;
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RESTORE_PRIMASK( );
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}
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/**
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* \brief API to reset flag allowing power mode
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*
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* \param [IN] enum e_LOW_POWER_State_Id_t
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*/
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void LowPower_Enable( e_LOW_POWER_State_Id_t state )
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{
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BACKUP_PRIMASK();
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DISABLE_IRQ( );
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LowPower_State &= ~state;
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RESTORE_PRIMASK( );
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}
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/**
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* \brief API to get flag allowing power mode
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* \note When flag is 0, low power mode is allowed
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* \param [IN] state
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* \retval flag state
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*/
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uint32_t LowPower_GetState( void )
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{
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return LowPower_State;
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}
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/**
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* @brief Handle Low Power
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* @param None
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* @retval None
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*/
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void LowPower_Handler( void )
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{
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DBG_GPIO_RST(GPIOB, GPIO_PIN_15);
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DBG_GPIO_RST(GPIOB, GPIO_PIN_14);
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if ( LowPower_State == 0 )
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{
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DBG_PRINTF_CRITICAL("dz\n\r");
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HW_EnterStopMode( );
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/* mcu dependent. to be implemented by user*/
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HW_ExitStopMode();
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DBG_GPIO_SET(GPIOB, GPIO_PIN_15);
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HW_RTC_setMcuWakeUpTime( );
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}
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else
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{
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DBG_PRINTF_CRITICAL("z\n\r");
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HW_EnterSleepMode( );
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DBG_GPIO_SET(GPIOB, GPIO_PIN_14);
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}
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}
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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