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/**
*********************************************************************************
*
* @file ald_pmu.c
* @brief PMU module driver.
*
* @version V1.0
* @date 04 Dec 2017
* @author AE Team
* @note
*
* Copyright (C) Shanghai Eastsoft Microelectronics Co. Ltd. All rights reserved.
*
*********************************************************************************
*/
#include "ald_pmu.h"
#include "ald_bkpc.h"
/** @addtogroup ES32FXXX_ALD
* @{
*/
/** @defgroup PMU PMU
* @brief PMU module driver
* @{
*/
#ifdef ALD_PMU
/** @defgroup PMU_Private_Functions PMU Private Functions
* @{
*/
/**
* @brief PMU module interrupt handler
* @retval None
*/
void LVD_Handler(void)
{
SYSCFG_UNLOCK();
SET_BIT(PMU->LVDCR, PMU_LVDCR_LVDCIF_MSK);
SYSCFG_LOCK();
lvd_irq_cbk();
return;
}
/**
* @}
*/
/** @defgroup PMU_Public_Functions PMU Public Functions
* @{
*/
/** @addtogroup PMU_Public_Functions_Group1 Low Power Mode
* @brief Low power mode select functions
*
* @verbatim
==============================================================================
##### Low power mode select functions #####
==============================================================================
[..] This section provides functions allowing to:
(+) Enter stop1 mode.
(+) Enter stop2 mode.
(+) Enter standby mode.
(+) Get wakeup status.
(+) Clear wakeup status.
@endverbatim
* @{
*/
/**
* @brief Enter stop1 mode
* @retval None
*/
void pmu_stop1_enter(void)
{
SYSCFG_UNLOCK();
SET_BIT(PMU->CR, PMU_CR_LPSTOP_MSK);
MODIFY_REG(PMU->CR, PMU_CR_LPM_MSK, PMU_LP_STOP1 << PMU_CR_LPM_POSS);
SYSCFG_LOCK();
SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
__WFI();
SysTick->CTRL |= SysTick_CTRL_ENABLE_Msk;
return;
}
/**
* @brief Enter stop2 mode
* @retval None
*/
void pmu_stop2_enter(void)
{
SYSCFG_UNLOCK();
SET_BIT(PMU->CR, PMU_CR_LPSTOP_MSK);
MODIFY_REG(PMU->CR, PMU_CR_LPM_MSK, PMU_LP_STOP2 << PMU_CR_LPM_POSS);
SYSCFG_LOCK();
SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
__WFI();
SysTick->CTRL |= SysTick_CTRL_ENABLE_Msk;
return;
}
/**
* @brief Enter standby mode
* @param port: The port whick wake up the standby mode.
* @retval None
*/
void pmu_standby_enter(pmu_standby_wakeup_sel_t port)
{
assert_param(IS_PMU_STANDBY_PORT_SEL(port));
if (port != PMU_STANDBY_PORT_NONE) {
BKPC_UNLOCK();
SET_BIT(PMU->CR, PMU_CR_LPSTOP_MSK);
MODIFY_REG(BKPC->CR, BKPC_CR_WKPS_MSK, port << BKPC_CR_WKPS_POSS);
SET_BIT(BKPC->CR, BKPC_CR_WKPEN_MSK);
BKPC_LOCK();
SYSCFG_UNLOCK();
MODIFY_REG(PMU->CR, PMU_CR_WKPS_MSK, port << PMU_CR_WKPS_POSS);
SET_BIT(PMU->CR, PMU_CR_WKPEN_MSK);
MODIFY_REG(PMU->CR, PMU_CR_LPM_MSK, PMU_LP_STANDBY << PMU_CR_LPM_POSS);
SYSCFG_LOCK();
}
SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
__WFI();
SysTick->CTRL |= SysTick_CTRL_ENABLE_Msk;
return;
}
/**
* @brief Configures low power mode. The system clock must
* be less than 2MHz. Such as: LOSC or LRC.
* @param vol: LDO output voltage select in low power mode.
* @param state: New state, ENABLE/DISABLE;
* @retval None
*/
void pmu_lprun_config(pmu_ldo_lpmode_output_t vol, type_func_t state)
{
assert_param(IS_FUNC_STATE(state));
SYSCFG_UNLOCK();
if (state) {
assert_param(IS_PMU_LDO_LPMODE_OUTPUT(vol));
MODIFY_REG(PMU->CR, PMU_CR_LPVS_MSK, vol << PMU_CR_LPVS_POSS);
SET_BIT(PMU->CR, PMU_CR_LPRUN_MSK);
}
else {
CLEAR_BIT(PMU->CR, PMU_CR_LPRUN_MSK);
}
SYSCFG_LOCK();
return;
}
/**
* @brief Get wakup status.
* @param sr: Status bit.
* @retval Status.
*/
flag_status_t pmu_get_status(pmu_status_t sr)
{
assert_param(IS_PMU_STATUS(sr));
if (READ_BIT(PMU->SR, sr))
return SET;
return RESET;
}
/**
* @brief Clear wakup status.
* @param sr: Status bit.
* @retval None
*/
void pmu_clear_status(pmu_status_t sr)
{
assert_param(IS_PMU_STATUS(sr));
SYSCFG_UNLOCK();
if (sr == PMU_SR_WUF)
SET_BIT(PMU->CR, PMU_CR_CWUF_MSK);
else
SET_BIT(PMU->CR, PMU_CR_CSTANDBYF_MSK);
SYSCFG_LOCK();
return;
}
/**
* @}
*/
/** @addtogroup PMU_Public_Functions_Group2 LVD Configure
* @brief LVD configure functions
*
* @verbatim
==============================================================================
##### LVD configure functions #####
==============================================================================
[..] This section provides functions allowing to:
(+) Configure lvd parameters.
(+) Interrupt callback function.
@endverbatim
* @{
*/
/**
* @brief Configure lvd using specified parameters.
* @param sel: LVD threshold voltage.
* @param mode: LVD trigger mode.
* @param state: New state, ENABLE/DISABLE;
* @retval None
*/
void pmu_lvd_config(pmu_lvd_voltage_sel_t sel, pmu_lvd_trigger_mode_t mode, type_func_t state)
{
assert_param(IS_FUNC_STATE(state));
SYSCFG_UNLOCK();
if (state) {
assert_param(IS_PMU_LVD_VOL_SEL(sel));
assert_param(IS_PMU_LVD_TRIGGER_MODE(mode));
MODIFY_REG(PMU->LVDCR, PMU_LVDCR_LVDS_MSK, sel << PMU_LVDCR_LVDS_POSS);
MODIFY_REG(PMU->LVDCR, PMU_LVDCR_LVIFS_MSK, mode << PMU_LVDCR_LVIFS_POSS);
SET_BIT(PMU->LVDCR, PMU_LVDCR_LVDFLT_MSK);
SET_BIT(PMU->LVDCR, PMU_LVDCR_LVDCIF_MSK);
SET_BIT(PMU->LVDCR, PMU_LVDCR_LVDIE_MSK);
SET_BIT(PMU->LVDCR, PMU_LVDCR_LVDEN_MSK);
}
else {
SET_BIT(PMU->LVDCR, PMU_LVDCR_LVDCIF_MSK);
CLEAR_BIT(PMU->LVDCR, PMU_LVDCR_LVDIE_MSK);
CLEAR_BIT(PMU->LVDCR, PMU_LVDCR_LVDEN_MSK);
}
SYSCFG_LOCK();
return;
}
/**
* @brief Interrupt callback function.
* @note This function is declared as __weak to be overwritten in case of other
* implementations in user file.
* @retval None
*/
__weak void lvd_irq_cbk(void)
{
return;
}
/**
* @}
*/
/**
* @}
*/
#endif /* ALD_PMU */
/**
* @}
*/
/**
* @}
*/
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