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298 lines
7.1 KiB
C
298 lines
7.1 KiB
C
/*!
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* @file apm32f0xx_pmu.c
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*
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* @brief This file contains all the functions for the PMU peripheral
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*
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* @version V1.0.1
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*
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* @date 2021-07-01
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*
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*/
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#include "apm32f0xx_pmu.h"
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#include "apm32f0xx_rcm.h"
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/** @addtogroup Peripherals_Library Standard Peripheral Library
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@{
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*/
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/** @addtogroup PMU_Driver PMU Driver
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@{
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*/
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/** @addtogroup PMU_Fuctions Fuctions
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@{
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*/
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/*!
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* @brief Resets the PWR peripheral registers to their default reset values
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*
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* @param None
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*
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* @retval None
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*/
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void PMU_Reset(void)
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{
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RCM_EnableAPB1PeriphClock(RCM_APB1_PERIPH_PMU);
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RCM_DisableAPB1PeriphClock(RCM_APB1_PERIPH_PMU);
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}
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/*!
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* @brief Enables access to the Backup domain registers
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*
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* @param None
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*
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* @retval None
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*/
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void PMU_EnableBackupAccess(void)
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{
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PMU->CTRL_B.BPWEN = BIT_SET;
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}
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/*!
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* @brief Disables access to the Backup domain registers
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*
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* @param None
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*
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* @retval None
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*/
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void PMU_DisableBackupAccess(void)
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{
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PMU->CTRL_B.BPWEN = BIT_RESET;
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}
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/*!
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* @brief Configures the PMU PVD Level
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*
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* @param level: specifies the PVD Level
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* This parameter can be one of the following values
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* @arg PMU_PVDLEVEL_0
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* @arg PMU_PVDLEVEL_1
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* @arg PMU_PVDLEVEL_2
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* @arg PMU_PVDLEVEL_3
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* @arg PMU_PVDLEVEL_4
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* @arg PMU_PVDLEVEL_5
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* @arg PMU_PVDLEVEL_6
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* @arg PMU_PVDLEVEL_7
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*
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* @retval None
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*
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* @note It's not for APM32F030 devices
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*/
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void PMU_ConfigPVDLevel(PMU_PVDLEVEL_T level)
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{
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PMU->CTRL_B.PLSEL = level;
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}
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/*!
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* @brief Enables Power voltage detector
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*
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* @param None
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*
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* @retval None
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*
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* @note It's not for APM32F030 devices
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*/
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void PMU_EnablePVD(void)
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{
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PMU->CTRL_B.PVDEN = BIT_SET;
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}
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/*!
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* @brief Disables Power voltage detector
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*
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* @param None
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*
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* @retval None
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*
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* @note It's not for APM32F030 devices
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*/
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void PMU_DisablePVD(void)
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{
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PMU->CTRL_B.PVDEN = BIT_RESET;
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}
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/*!
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* @brief Enables the WakeUp Pin functionality
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*
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* @param pin: specifies the WakeUpPin
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* This parameter can be one of the following values
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* @arg PMU_WAKEUPPIN_1
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* @arg PMU_WAKEUPPIN_2
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* @arg PMU_WAKEUPPIN_3 It's Only for APM32F072/091 devices
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* @arg PMU_WAKEUPPIN_4 It's Only for APM32F072/091 devices
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* @arg PMU_WAKEUPPIN_5 It's Only for APM32F072/091 devices
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* @arg PMU_WAKEUPPIN_6 It's Only for APM32F072/091 devices
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* @arg PMU_WAKEUPPIN_7 It's Only for APM32F072/091 devices
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* @arg PMU_WAKEUPPIN_8 It's Only for APM32F072/091 devices
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*
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* @retval None
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*/
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void PMU_EnableWakeUpPin(PMU_WAKEUPPIN_T pin)
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{
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PMU->CSTS |= pin;
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}
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/*!
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* @brief DIsable the WakeUp Pin functionality
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*
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* @param pin: specifies the WakeUpPin
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* This parameter can be one of the following values
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* @arg PMU_WAKEUPPIN_1
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* @arg PMU_WAKEUPPIN_2
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* @arg PMU_WAKEUPPIN_3 It's Only for APM32F072/091 devices
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* @arg PMU_WAKEUPPIN_4 It's Only for APM32F072/091 devices
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* @arg PMU_WAKEUPPIN_5 It's Only for APM32F072/091 devices
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* @arg PMU_WAKEUPPIN_6 It's Only for APM32F072/091 devices
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* @arg PMU_WAKEUPPIN_7 It's Only for APM32F072/091 devices
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* @arg PMU_WAKEUPPIN_8 It's Only for APM32F072/091 devices
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*
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* @retval None
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*/
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void PMU_DisableWakeUpPin(PMU_WAKEUPPIN_T pin)
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{
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PMU->CSTS &= ~pin;
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}
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/*!
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* @brief Enters Sleep mode
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*
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* @param entry :specifies if SLEEP mode in entered with WFI or WFE instruction
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* This parameter can be one of the following values:
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* @arg PMU_SLEEPENTRY_WFI: enter SLEEP mode with WFI instruction
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* @arg PMU_SLEEPENTRY_WFE: enter SLEEP mode with WFE instruction
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*
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* @retval None
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*/
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void PMU_EnterSleepMode(PMU_SLEEPENTRY_T entry)
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{
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SCB->SCR &= (uint32_t)~((uint32_t)SCB_SCR_SLEEPDEEP_Msk);
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if (entry == PMU_SLEEPENTRY_WFI)
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{
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__WFI();
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}
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else
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{
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__SEV();
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__WFE();
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__WFE();
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}
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}
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/*!
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* @brief Enters STOP mode
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*
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* @param regulator: specifies the regulator state in STOP mode
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* This parameter can be one of the following values:
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* @arg PMU_REGULATOR_ON: STOP mode with regulator ON
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* @arg PMU_REGULATOR_LowPower: STOP mode with regulator in low power mode
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*
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* @param entry: specifies if STOP mode in entered with WFI or WFE instruction
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* This parameter can be one of the following values:
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* @arg PMU_STOPENTRY_WFI: enter STOP mode with WFI instruction
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* @arg PMU_STOPENTRY_WFE: enter STOP mode with WFE instruction
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* @arg PMU_STOPENTRY_SLEEPONEXIT: enter STOP mode with SLEEPONEXIT instruction
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*
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* @retval None
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*/
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void PMU_EnterSTOPMode(PMU_REGULATOR_T regulator, PMU_STOPENTRY_T entry)
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{
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PMU->CTRL_B.PDDSCFG = BIT_RESET;
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PMU->CTRL_B.LPDSCFG = regulator;
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SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
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switch (entry)
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{
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case PMU_STOPENTRY_WFI:
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__WFI();
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SCB->SCR &= (uint32_t)~((uint32_t)SCB_SCR_SLEEPDEEP_Msk);
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break;
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case PMU_STOPENTRY_WFE:
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__WFE();
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SCB->SCR &= (uint32_t)~((uint32_t)SCB_SCR_SLEEPDEEP_Msk);
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break;
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case PMU_STOPENTRY_SLEEPONEXIT:
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SCB->SCR |= SCB_SCR_SLEEPONEXIT_Msk;
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break;
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default:
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break;
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}
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}
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/*!
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* @brief Enters STANDBY mode
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*
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* @param None
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*
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* @retval None
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*/
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void PMU_EnterSTANDBYMode(void)
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{
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PMU->CTRL_B.PDDSCFG = BIT_SET;
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SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
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__WFI();
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}
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/*!
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* @brief Checks whether the specified PMU flag is set or not
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*
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* @param flag: specifies the flag to check
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* This parameter can be one of the following values:
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* @arg PMU_FLAG_WUPF: Wake Up flag
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* @arg PMU_FLAG_STDBYF: StandBy flag
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* @arg PMU_FLAG_PVDOF: PVD output flag (Not for APM32F030)
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* @arg PMU_FLAG_VREFINTF: VREFINT flag
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*
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* @retval The new state of PMU_FLAG (SET or RESET)
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*/
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uint8_t PMU_ReadStatusFlag(PMU_FLAG_T flag)
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{
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uint8_t bit;
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if ((PMU->CSTS & flag) != (uint32_t)RESET)
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{
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bit = SET;
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}
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else
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{
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bit = RESET;
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}
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/** Return the flag status */
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return bit;
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}
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/*!
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* @brief Clears the PWR's pending flags
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*
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* @param flag: specifies the flag to clear
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* This parameter can be one of the following values:
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* @arg PMU_FLAG_WUPF: Wake Up flag
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* @arg PMU_FLAG_STDBYF: StandBy flag
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*
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* @retval None
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*/
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void PMU_ClearStatusFlag(uint8_t flag)
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{
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if (flag == PMU_FLAG_WUPF)
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{
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PMU->CTRL_B.WUFLGCLR = BIT_SET;
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}
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else if (flag == PMU_FLAG_STDBYF)
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{
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PMU->CTRL_B.SBFLGCLR = BIT_SET;
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}
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}
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/**@} end of group PMU_Fuctions*/
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/**@} end of group PMU_Driver */
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/**@} end of group Peripherals_Library*/
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