mbed library sources modified for open wear
Dependents: openwear-lifelogger-example
Fork of mbed-src by
Diff: targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_pwr.c
- Revision:
- 126:549ba18ddd81
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_pwr.c Wed Mar 19 16:00:09 2014 +0000 @@ -0,0 +1,322 @@ +/** + ****************************************************************************** + * @file stm32f10x_pwr.c + * @author MCD Application Team + * @version V3.6.1 + * @date 05-March-2012 + * @brief This file provides all the PWR firmware functions. + ******************************************************************************* + * Copyright (c) 2014, STMicroelectronics + * All rights reserved. + * + * 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 "stm32f10x_pwr.h" +#include "stm32f10x_rcc.h" + +/** @addtogroup STM32F10x_StdPeriph_Driver + * @{ + */ + +/** @defgroup PWR + * @brief PWR driver modules + * @{ + */ + +/** @defgroup PWR_Private_TypesDefinitions + * @{ + */ + +/** + * @} + */ + +/** @defgroup PWR_Private_Defines + * @{ + */ + +/* --------- PWR registers bit address in the alias region ---------- */ +#define PWR_OFFSET (PWR_BASE - PERIPH_BASE) + +/* --- CR Register ---*/ + +/* Alias word address of DBP bit */ +#define CR_OFFSET (PWR_OFFSET + 0x00) +#define DBP_BitNumber 0x08 +#define CR_DBP_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (DBP_BitNumber * 4)) + +/* Alias word address of PVDE bit */ +#define PVDE_BitNumber 0x04 +#define CR_PVDE_BB (PERIPH_BB_BASE + (CR_OFFSET * 32) + (PVDE_BitNumber * 4)) + +/* --- CSR Register ---*/ + +/* Alias word address of EWUP bit */ +#define CSR_OFFSET (PWR_OFFSET + 0x04) +#define EWUP_BitNumber 0x08 +#define CSR_EWUP_BB (PERIPH_BB_BASE + (CSR_OFFSET * 32) + (EWUP_BitNumber * 4)) + +/* ------------------ PWR registers bit mask ------------------------ */ + +/* CR register bit mask */ +#define CR_DS_MASK ((uint32_t)0xFFFFFFFC) +#define CR_PLS_MASK ((uint32_t)0xFFFFFF1F) + + +/** + * @} + */ + +/** @defgroup PWR_Private_Macros + * @{ + */ + +/** + * @} + */ + +/** @defgroup PWR_Private_Variables + * @{ + */ + +/** + * @} + */ + +/** @defgroup PWR_Private_FunctionPrototypes + * @{ + */ + +/** + * @} + */ + +/** @defgroup PWR_Private_Functions + * @{ + */ + +/** + * @brief Deinitializes the PWR peripheral registers to their default reset values. + * @param None + * @retval None + */ +void PWR_DeInit(void) +{ + RCC_APB1PeriphResetCmd(RCC_APB1Periph_PWR, ENABLE); + RCC_APB1PeriphResetCmd(RCC_APB1Periph_PWR, DISABLE); +} + +/** + * @brief Enables or disables access to the RTC and backup registers. + * @param NewState: new state of the access to the RTC and backup registers. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void PWR_BackupAccessCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + *(__IO uint32_t *) CR_DBP_BB = (uint32_t)NewState; +} + +/** + * @brief Enables or disables the Power Voltage Detector(PVD). + * @param NewState: new state of the PVD. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void PWR_PVDCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + *(__IO uint32_t *) CR_PVDE_BB = (uint32_t)NewState; +} + +/** + * @brief Configures the voltage threshold detected by the Power Voltage Detector(PVD). + * @param PWR_PVDLevel: specifies the PVD detection level + * This parameter can be one of the following values: + * @arg PWR_PVDLevel_2V2: PVD detection level set to 2.2V + * @arg PWR_PVDLevel_2V3: PVD detection level set to 2.3V + * @arg PWR_PVDLevel_2V4: PVD detection level set to 2.4V + * @arg PWR_PVDLevel_2V5: PVD detection level set to 2.5V + * @arg PWR_PVDLevel_2V6: PVD detection level set to 2.6V + * @arg PWR_PVDLevel_2V7: PVD detection level set to 2.7V + * @arg PWR_PVDLevel_2V8: PVD detection level set to 2.8V + * @arg PWR_PVDLevel_2V9: PVD detection level set to 2.9V + * @retval None + */ +void PWR_PVDLevelConfig(uint32_t PWR_PVDLevel) +{ + uint32_t tmpreg = 0; + /* Check the parameters */ + assert_param(IS_PWR_PVD_LEVEL(PWR_PVDLevel)); + tmpreg = PWR->CR; + /* Clear PLS[7:5] bits */ + tmpreg &= CR_PLS_MASK; + /* Set PLS[7:5] bits according to PWR_PVDLevel value */ + tmpreg |= PWR_PVDLevel; + /* Store the new value */ + PWR->CR = tmpreg; +} + +/** + * @brief Enables or disables the WakeUp Pin functionality. + * @param NewState: new state of the WakeUp Pin functionality. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void PWR_WakeUpPinCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + *(__IO uint32_t *) CSR_EWUP_BB = (uint32_t)NewState; +} + +/** + * @brief Enters STOP mode. + * @param PWR_Regulator: specifies the regulator state in STOP mode. + * This parameter can be one of the following values: + * @arg PWR_Regulator_ON: STOP mode with regulator ON + * @arg PWR_Regulator_LowPower: STOP mode with regulator in low power mode + * @param PWR_STOPEntry: specifies if STOP mode in entered with WFI or WFE instruction. + * This parameter can be one of the following values: + * @arg PWR_STOPEntry_WFI: enter STOP mode with WFI instruction + * @arg PWR_STOPEntry_WFE: enter STOP mode with WFE instruction + * @retval None + */ +void PWR_EnterSTOPMode(uint32_t PWR_Regulator, uint8_t PWR_STOPEntry) +{ + uint32_t tmpreg = 0; + /* Check the parameters */ + assert_param(IS_PWR_REGULATOR(PWR_Regulator)); + assert_param(IS_PWR_STOP_ENTRY(PWR_STOPEntry)); + + /* Select the regulator state in STOP mode ---------------------------------*/ + tmpreg = PWR->CR; + /* Clear PDDS and LPDS bits */ + tmpreg &= CR_DS_MASK; + /* Set LPDS bit according to PWR_Regulator value */ + tmpreg |= PWR_Regulator; + /* Store the new value */ + PWR->CR = tmpreg; + /* Set SLEEPDEEP bit of Cortex System Control Register */ + SCB->SCR |= SCB_SCR_SLEEPDEEP; + + /* Select STOP mode entry --------------------------------------------------*/ + if(PWR_STOPEntry == PWR_STOPEntry_WFI) + { + /* Request Wait For Interrupt */ + __WFI(); + } + else + { + /* Request Wait For Event */ + __WFE(); + } + + /* Reset SLEEPDEEP bit of Cortex System Control Register */ + SCB->SCR &= (uint32_t)~((uint32_t)SCB_SCR_SLEEPDEEP); +} + +/** + * @brief Enters STANDBY mode. + * @param None + * @retval None + */ +void PWR_EnterSTANDBYMode(void) +{ + /* Clear Wake-up flag */ + PWR->CR |= PWR_CR_CWUF; + /* Select STANDBY mode */ + PWR->CR |= PWR_CR_PDDS; + /* Set SLEEPDEEP bit of Cortex System Control Register */ + SCB->SCR |= SCB_SCR_SLEEPDEEP; +/* This option is used to ensure that store operations are completed */ +#if defined ( __CC_ARM ) + __force_stores(); +#endif + /* Request Wait For Interrupt */ + __WFI(); +} + +/** + * @brief Checks whether the specified PWR flag is set or not. + * @param PWR_FLAG: specifies the flag to check. + * This parameter can be one of the following values: + * @arg PWR_FLAG_WU: Wake Up flag + * @arg PWR_FLAG_SB: StandBy flag + * @arg PWR_FLAG_PVDO: PVD Output + * @retval The new state of PWR_FLAG (SET or RESET). + */ +FlagStatus PWR_GetFlagStatus(uint32_t PWR_FLAG) +{ + FlagStatus bitstatus = RESET; + /* Check the parameters */ + assert_param(IS_PWR_GET_FLAG(PWR_FLAG)); + + if ((PWR->CSR & PWR_FLAG) != (uint32_t)RESET) + { + bitstatus = SET; + } + else + { + bitstatus = RESET; + } + /* Return the flag status */ + return bitstatus; +} + +/** + * @brief Clears the PWR's pending flags. + * @param PWR_FLAG: specifies the flag to clear. + * This parameter can be one of the following values: + * @arg PWR_FLAG_WU: Wake Up flag + * @arg PWR_FLAG_SB: StandBy flag + * @retval None + */ +void PWR_ClearFlag(uint32_t PWR_FLAG) +{ + /* Check the parameters */ + assert_param(IS_PWR_CLEAR_FLAG(PWR_FLAG)); + + PWR->CR |= PWR_FLAG << 2; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/