/*******************************************************************************
 * @file    stm32_lpm_if.c
 * @author  MCD Application Team
 * @brief   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 Ultimate Liberty license
 * SLA0044, the "License"; You may not use this file except in compliance with
 * the License. You may obtain a copy of the License at:
 *                             www.st.com/SLA0044
 *
 ******************************************************************************
 */

/* Includes ------------------------------------------------------------------*/
#include "stm32_lpm_if.h"
#include "usart_if.h"

/* External variables --------------------------------------------------------*/
extern UART_HandleTypeDef huart1;

/* Private typedef -----------------------------------------------------------*/

const struct UTIL_LPM_Driver_s UTIL_PowerDriver =
{
  PWR_EnterSleepMode,
  PWR_ExitSleepMode,

  PWR_EnterStopMode,
  PWR_ExitStopMode,

  PWR_EnterOffMode,
  PWR_ExitOffMode,
};

/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported variables --------------------------------------------------------*/
/* Exported functions --------------------------------------------------------*/

/**
  * @brief Enters Low Power Off Mode
  * @param none
  * @retval none
  */
void PWR_EnterOffMode(void)
{
}
/**
  * @brief Exits Low Power Off Mode
  * @param none
  * @retval none
  */
void PWR_ExitOffMode(void)
{
}

/**
  * @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 1 */
  /* Clear Status Flag before entering STOP/STANDBY Mode */
  LL_PWR_ClearFlag_C1STOP_C1STB();
  /* USER CODE END 1 */

  /* USER CODE BEGIN 2 */
  HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFI);
  /* USER CODE END 2 */
}
/**
  * @brief Exits Low Power Stop Mode
  * @note Enable the pll at 32MHz
  * @param none
  * @retval none
  */
void PWR_ExitStopMode(void)
{
  /* USER CODE BEGIN 4 */
  /*Not retained periph:
    ADC interface
    DAC interface USARTx, TIMx, i2Cx, SPIx
    SRAM ctrls, DMAx, DMAMux, AES, RNG, HSEM  */
  /*to reenable lost DMA settings*/
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
  }

  /* USER CODE END 4 */
}

/**
  * @brief Enters Low Power Sleep Mode
  * @note ARM exits the function when waking up
  * @param none
  * @retval none
  */
void PWR_EnterSleepMode(void)
{
  /* Suspend sysTick */
  HAL_SuspendTick();

  /* USER CODE BEGIN 5 */
  HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
  /* USER CODE END 5 */
}

/**
  * @brief Enters Low Power Sleep Mode
  * @note ARM exits the function when waking up
  * @param none
  * @retval none
  */
void PWR_ExitSleepMode(void)
{
  /* Suspend sysTick */
  HAL_ResumeTick();
	
}
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/