 /*******************************************************************************
  * @file    low_power.c
  * @author  MCD Application Team
  * @version V1.1.1
  * @date    01-June-2017
  * @brief   driver for low power
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics International N.V. 
  * All rights reserved.</center></h2>
  *
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  *    derived from this software without specific written permission.
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  *    software, must execute solely and exclusively on microcontroller or
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  ******************************************************************************
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/* Includes ------------------------------------------------------------------*/
#include "hw.h"
#include "low_power.h"
#include "lorawan_port.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/

/**
 * \brief Flag to indicate if MCU can go to low power mode
 *        When 0, MCU is authorized to go in low power mode
 */
static uint32_t LowPower_State = 0;

/* Private function prototypes -----------------------------------------------*/
extern bool wakeByUart;


/* Exported functions ---------------------------------------------------------*/

/**
 * \brief API to set flag allowing power mode
 *
 * \param [IN] enum e_LOW_POWER_State_Id_t  
 */
void LowPower_Disable( e_LOW_POWER_State_Id_t state )
{
    CPSR_ALLOC();
    RHINO_CPU_INTRPT_DISABLE();
    LowPower_State |= state;
    RHINO_CPU_INTRPT_ENABLE();
}

/**
 * \brief API to reset flag allowing power mode
 *
 * \param [IN] enum e_LOW_POWER_State_Id_t 
 */
void LowPower_Enable( e_LOW_POWER_State_Id_t state )
{
    CPSR_ALLOC();
    RHINO_CPU_INTRPT_DISABLE();
    LowPower_State &= ~state;
    RHINO_CPU_INTRPT_ENABLE();
}

/**
 * \brief API to get flag allowing power mode
 * \note When flag is 0, low power mode is allowed
 * \param [IN] state
 * \retval flag state 
 */
uint32_t LowPower_GetState( void )
{
  return LowPower_State;
}

/**
 * @brief  Handle Low Power
 * @param  None
 * @retval None
 */
void lowPowerHandler( void )
{
    CPSR_ALLOC();
    RHINO_CPU_INTRPT_DISABLE();
    if (LowPower_State == 0 && wakeByUart == false) {
        DBG_PRINTF_CRITICAL("dz\n\r");
        pinMode(P4_1,ANALOG);// SPI0  MISO;
        aos_lrwan_chg_mode.enter_stop_mode();
        /* mcu dependent. to be implemented by user*/
        aos_lrwan_chg_mode.exit_stop_mode();
        aos_lrwan_time_itf.set_uc_wakeup_time();
        pinMode(P4_1,INPUT);
    } else {
        //DBG_PRINTF_CRITICAL("z\n\r");
        aos_lrwan_chg_mode.enter_sleep_mode();
    }
    RHINO_CPU_INTRPT_ENABLE();
}
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/


