/* USER CODE BEGIN Header */
/**
 ***************************************************************************************
  * File Name          : stm32_lpm_if.c
  * Description        : Low layer function to enter/exit low power modes (stop, sleep).
 ***************************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* USER CODE END Header */

/* Includes ------------------------------------------------------------------*/
#include "stm32_lpm_if.h"
#include "stm32_lpm.h"
#include "app_conf.h"
/* USER CODE BEGIN include */

/* USER CODE END include */

/* Exported variables --------------------------------------------------------*/
const struct UTIL_LPM_Driver_s UTIL_PowerDriver =
{
  PWR_EnterSleepMode,
  PWR_ExitSleepMode,

  PWR_EnterStopMode,
  PWR_ExitStopMode,

  PWR_EnterOffMode,
  PWR_ExitOffMode,
};

/* Private function prototypes -----------------------------------------------*/
static void Switch_On_HSI( void );
/* USER CODE BEGIN Private_Function_Prototypes */

/* USER CODE END Private_Function_Prototypes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN Private_Typedef */

/* USER CODE END Private_Typedef */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN Private_Define */

/* USER CODE END Private_Define */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN Private_Macro */

/* USER CODE END Private_Macro */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN Private_Variables */

/* USER CODE END Private_Variables */

/* Functions Definition ------------------------------------------------------*/
/**
  * @brief Enters Low Power Off Mode
  * @param none
  * @retval none
  */
void PWR_EnterOffMode( void )
{
/* USER CODE BEGIN PWR_EnterOffMode */

/* USER CODE END PWR_EnterOffMode */
}

/**
  * @brief Exits Low Power Off Mode
  * @param none
  * @retval none
  */
void PWR_ExitOffMode( void )
{
/* USER CODE BEGIN PWR_ExitOffMode */

/* USER CODE END PWR_ExitOffMode */
}

/**
  * @brief Enters Low Power Stop Mode
  * @note ARM exists the function when waking up
  * @param none
  * @retval none
  */
void PWR_EnterStopMode( void )
{
/* USER CODE BEGIN PWR_EnterStopMode */

/* USER CODE END PWR_EnterStopMode */
}

/**
  * @brief Exits Low Power Stop Mode
  * @note Enable the pll at 32MHz
  * @param none
  * @retval none
  */
void PWR_ExitStopMode( void )
{
/* USER CODE BEGIN PWR_ExitStopMode */

/* USER CODE END PWR_ExitStopMode */
}

/**
  * @brief Enters Low Power Sleep Mode
  * @note ARM exits the function when waking up
  * @param none
  * @retval none
  */
void PWR_EnterSleepMode( void )
{
/* USER CODE BEGIN PWR_EnterSleepMode */

/* USER CODE END PWR_EnterSleepMode */
}

/**
  * @brief Exits Low Power Sleep Mode
  * @note ARM exits the function when waking up
  * @param none
  * @retval none
  */
void PWR_ExitSleepMode( void )
{
/* USER CODE BEGIN PWR_ExitSleepMode */

/* USER CODE END PWR_ExitSleepMode */
}

/*************************************************************
 *
 * LOCAL FUNCTIONS
 *
 *************************************************************/
/**
  * @brief Switch the system clock on HSI
  * @param none
  * @retval none
  */
static void Switch_On_HSI( void )
{
  LL_RCC_HSI_Enable( );
  while(!LL_RCC_HSI_IsReady( ));
  LL_RCC_SetSysClkSource( LL_RCC_SYS_CLKSOURCE_HSI );
  LL_RCC_SetSMPSClockSource(LL_RCC_SMPS_CLKSOURCE_HSI);
  while (LL_RCC_GetSysClkSource( ) != LL_RCC_SYS_CLKSOURCE_STATUS_HSI);
}

/* USER CODE BEGIN Private_Functions */

/* USER CODE END Private_Functions */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/