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120 lines
4.8 KiB
C
120 lines
4.8 KiB
C
/**
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******************************************************************************
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* File Name : hw_lpm.c
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* Description : Hardware Low Power Mode source file for BLE
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* middleWare.
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******************************************************************************
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* This notice applies to any and all portions of this file
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* that are not between comment pairs USER CODE BEGIN and
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* USER CODE END. Other portions of this file, whether
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* inserted by the user or by software development tools
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* are owned by their respective copyright owners.
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*
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* Copyright (c) 2019 STMicroelectronics International N.V.
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* All rights reserved.
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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 "app_conf.h"
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#include "hw_conf.h"
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/* Private const -----------------------------------------------------------*/
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const uint32_t HW_LPM_STOP_MODE[3] = {LL_PWR_MODE_STOP0, LL_PWR_MODE_STOP1, LL_PWR_MODE_STOP2};
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const uint32_t HW_LPM_OFF_MODE[2] = {LL_PWR_MODE_STANDBY, LL_PWR_MODE_SHUTDOWN};
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void HW_LPM_SleepMode(void)
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{
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LL_LPM_EnableSleep(); /**< Clear SLEEPDEEP bit of Cortex System Control Register */
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/**
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* This option is used to ensure that store operations are completed
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*/
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#if defined ( __CC_ARM)
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__force_stores();
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#endif
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__WFI();
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return;
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}
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void HW_LPM_StopMode(HW_LPM_StopModeConf_t configuration)
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{
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LL_PWR_SetPowerMode(HW_LPM_STOP_MODE[configuration]);
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LL_LPM_EnableDeepSleep(); /**< Set SLEEPDEEP bit of Cortex System Control Register */
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/**
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* This option is used to ensure that store operations are completed
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*/
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#if defined ( __CC_ARM)
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__force_stores();
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#endif
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__WFI();
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return;
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}
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void HW_LPM_OffMode(HW_LPM_OffModeConf_t configuration)
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{
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/*
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* There is no risk to clear all the WUF here because in the current implementation, this API is called
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* in critical section. If an interrupt occurs while in that critical section before that point,
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* the flag is set and will be cleared here but the system will not enter Off Mode
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* because an interrupt is pending in the NVIC. The ISR will be executed when moving out
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* of this critical section
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*/
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LL_PWR_ClearFlag_WU();
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LL_PWR_SetPowerMode(HW_LPM_OFF_MODE[configuration]);
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LL_LPM_EnableDeepSleep(); /**< Set SLEEPDEEP bit of Cortex System Control Register */
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/**
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* This option is used to ensure that store operations are completed
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*/
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#if defined ( __CC_ARM)
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__force_stores();
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#endif
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__WFI();
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return;
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}
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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