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/**

  ******************************************************************************

  * @file    stm32f0xx_hal_pcd_ex.c

  * @author  MCD Application Team

  * @brief   PCD Extended HAL module driver.

  *          This file provides firmware functions to manage the following

  *          functionalities of the USB Peripheral Controller:

  *           + Extended features functions

  *

  ******************************************************************************

  * @attention

  *

  * <h2><center>&copy; Copyright (c) 2016 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

  *

  ******************************************************************************

  */

/* Includes ------------------------------------------------------------------*/

#include "stm32f0xx_hal.h"

/** @addtogroup STM32F0xx_HAL_Driver

  * @{

  */

/** @defgroup PCDEx PCDEx

  * @brief PCD Extended HAL module driver

  * @{

  */

#ifdef HAL_PCD_MODULE_ENABLED

#if defined (USB)

/* Private types -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

/* Private constants ---------------------------------------------------------*/

/* Private macros ------------------------------------------------------------*/

/* Private functions ---------------------------------------------------------*/

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

/** @defgroup PCDEx_Exported_Functions PCDEx Exported Functions

  * @{

  */

/** @defgroup PCDEx_Exported_Functions_Group1 Peripheral Control functions

  * @brief    PCDEx control functions

 *

@verbatim

 ===============================================================================

                 ##### Extended features functions #####

 ===============================================================================

    [..]  This section provides functions allowing to:

      (+) Update FIFO configuration

@endverbatim

  * @{

  */

/**

  * @brief  Configure PMA for EP

  * @param  hpcd  Device instance

  * @param  ep_addr endpoint address

  * @param  ep_kind endpoint Kind

  *                  USB_SNG_BUF: Single Buffer used

  *                  USB_DBL_BUF: Double Buffer used

  * @param  pmaadress: EP address in The PMA: In case of single buffer endpoint

  *                   this parameter is 16-bit value providing the address

  *                   in PMA allocated to endpoint.

  *                   In case of double buffer endpoint this parameter

  *                   is a 32-bit value providing the endpoint buffer 0 address

  *                   in the LSB part of 32-bit value and endpoint buffer 1 address

  *                   in the MSB part of 32-bit value.

  * @retval HAL status

  */

HAL_StatusTypeDef  HAL_PCDEx_PMAConfig(PCD_HandleTypeDef *hpcd,

                                       uint16_t ep_addr,

                                       uint16_t ep_kind,

                                       uint32_t pmaadress)

{

  PCD_EPTypeDef *ep;

  /* initialize ep structure*/

  if ((0x80U & ep_addr) == 0x80U)

  {

    ep = &hpcd->IN_ep[ep_addr & EP_ADDR_MSK];

  }

  else

  {

    ep = &hpcd->OUT_ep[ep_addr];

  }

  /* Here we check if the endpoint is single or double Buffer*/

  if (ep_kind == PCD_SNG_BUF)

  {

    /* Single Buffer */

    ep->doublebuffer = 0U;

    /* Configure the PMA */

    ep->pmaadress = (uint16_t)pmaadress;

  }

  else /* USB_DBL_BUF */

  {

    /* Double Buffer Endpoint */

    ep->doublebuffer = 1U;

    /* Configure the PMA */

    ep->pmaaddr0 = (uint16_t)(pmaadress & 0xFFFFU);

    ep->pmaaddr1 = (uint16_t)((pmaadress & 0xFFFF0000U) >> 16);

  }

  return HAL_OK;

}

/**

  * @brief  Activate BatteryCharging feature.

  * @param  hpcd PCD handle

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_PCDEx_ActivateBCD(PCD_HandleTypeDef *hpcd)

{

  USB_TypeDef *USBx = hpcd->Instance;

  hpcd->battery_charging_active = 1U;

  /* Enable BCD feature */

  USBx->BCDR |= USB_BCDR_BCDEN;

  /* Enable DCD : Data Contact Detect */

  USBx->BCDR &= ~(USB_BCDR_PDEN);

  USBx->BCDR &= ~(USB_BCDR_SDEN);

  USBx->BCDR |= USB_BCDR_DCDEN;

  return HAL_OK;

}

/**

  * @brief  Deactivate BatteryCharging feature.

  * @param  hpcd PCD handle

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_PCDEx_DeActivateBCD(PCD_HandleTypeDef *hpcd)

{

  USB_TypeDef *USBx = hpcd->Instance;

  hpcd->battery_charging_active = 0U;

  /* Disable BCD feature */

  USBx->BCDR &= ~(USB_BCDR_BCDEN);

  return HAL_OK;

}

/**

  * @brief  Handle BatteryCharging Process.

  * @param  hpcd PCD handle

  * @retval HAL status

  */

void HAL_PCDEx_BCD_VBUSDetect(PCD_HandleTypeDef *hpcd)

{

  USB_TypeDef *USBx = hpcd->Instance;

  uint32_t tickstart = HAL_GetTick();

  /* Wait Detect flag or a timeout is happen*/

  while ((USBx->BCDR & USB_BCDR_DCDET) == 0U)

  {

    /* Check for the Timeout */

    if ((HAL_GetTick() - tickstart) > 1000U)

    {

#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)

      hpcd->BCDCallback(hpcd, PCD_BCD_ERROR);

#else

      HAL_PCDEx_BCD_Callback(hpcd, PCD_BCD_ERROR);

#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */

      return;

    }

  }

  HAL_Delay(200U);

  /* Data Pin Contact ? Check Detect flag */

  if ((USBx->BCDR & USB_BCDR_DCDET) == USB_BCDR_DCDET)

  {

#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)

    hpcd->BCDCallback(hpcd, PCD_BCD_CONTACT_DETECTION);

#else

    HAL_PCDEx_BCD_Callback(hpcd, PCD_BCD_CONTACT_DETECTION);

#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */

  }

  /* Primary detection: checks if connected to Standard Downstream Port

  (without charging capability) */

  USBx->BCDR &= ~(USB_BCDR_DCDEN);

  HAL_Delay(50U);

  USBx->BCDR |= (USB_BCDR_PDEN);

  HAL_Delay(50U);

  /* If Charger detect ? */

  if ((USBx->BCDR & USB_BCDR_PDET) == USB_BCDR_PDET)

  {

    /* Start secondary detection to check connection to Charging Downstream

    Port or Dedicated Charging Port */

    USBx->BCDR &= ~(USB_BCDR_PDEN);

    HAL_Delay(50U);

    USBx->BCDR |= (USB_BCDR_SDEN);

    HAL_Delay(50U);

    /* If CDP ? */

    if ((USBx->BCDR & USB_BCDR_SDET) == USB_BCDR_SDET)

    {

      /* Dedicated Downstream Port DCP */

#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)

      hpcd->BCDCallback(hpcd, PCD_BCD_DEDICATED_CHARGING_PORT);

#else

      HAL_PCDEx_BCD_Callback(hpcd, PCD_BCD_DEDICATED_CHARGING_PORT);

#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */

    }

    else

    {

      /* Charging Downstream Port CDP */

#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)

      hpcd->BCDCallback(hpcd, PCD_BCD_CHARGING_DOWNSTREAM_PORT);

#else

      HAL_PCDEx_BCD_Callback(hpcd, PCD_BCD_CHARGING_DOWNSTREAM_PORT);

#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */

    }

  }

  else /* NO */

  {

    /* Standard Downstream Port */

#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)

    hpcd->BCDCallback(hpcd, PCD_BCD_STD_DOWNSTREAM_PORT);

#else

    HAL_PCDEx_BCD_Callback(hpcd, PCD_BCD_STD_DOWNSTREAM_PORT);

#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */

  }

  /* Battery Charging capability discovery finished Start Enumeration */

  (void)HAL_PCDEx_DeActivateBCD(hpcd);

#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)

  hpcd->BCDCallback(hpcd, PCD_BCD_DISCOVERY_COMPLETED);

#else

  HAL_PCDEx_BCD_Callback(hpcd, PCD_BCD_DISCOVERY_COMPLETED);

#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */

}

/**

  * @brief  Activate LPM feature.

  * @param  hpcd PCD handle

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_PCDEx_ActivateLPM(PCD_HandleTypeDef *hpcd)

{

  USB_TypeDef *USBx = hpcd->Instance;

  hpcd->lpm_active = 1U;

  hpcd->LPM_State = LPM_L0;

  USBx->LPMCSR |= USB_LPMCSR_LMPEN;

  USBx->LPMCSR |= USB_LPMCSR_LPMACK;

  return HAL_OK;

}

/**

  * @brief  Deactivate LPM feature.

  * @param  hpcd PCD handle

  * @retval HAL status

  */

HAL_StatusTypeDef HAL_PCDEx_DeActivateLPM(PCD_HandleTypeDef *hpcd)

{

  USB_TypeDef *USBx = hpcd->Instance;

  hpcd->lpm_active = 0U;

  USBx->LPMCSR &= ~(USB_LPMCSR_LMPEN);

  USBx->LPMCSR &= ~(USB_LPMCSR_LPMACK);

  return HAL_OK;

}

/**

  * @brief  Send LPM message to user layer callback.

  * @param  hpcd PCD handle

  * @param  msg LPM message

  * @retval HAL status

  */

__weak void HAL_PCDEx_LPM_Callback(PCD_HandleTypeDef *hpcd, PCD_LPM_MsgTypeDef msg)

{

  /* Prevent unused argument(s) compilation warning */

  UNUSED(hpcd);

  UNUSED(msg);

  /* NOTE : This function should not be modified, when the callback is needed,

            the HAL_PCDEx_LPM_Callback could be implemented in the user file

   */

}

/**

  * @brief  Send BatteryCharging message to user layer callback.

  * @param  hpcd PCD handle

  * @param  msg LPM message

  * @retval HAL status

  */

__weak void HAL_PCDEx_BCD_Callback(PCD_HandleTypeDef *hpcd, PCD_BCD_MsgTypeDef msg)

{

  /* Prevent unused argument(s) compilation warning */

  UNUSED(hpcd);

  UNUSED(msg);

  /* NOTE : This function should not be modified, when the callback is needed,

            the HAL_PCDEx_BCD_Callback could be implemented in the user file

   */

}

/**

  * @}

  */

/**

  * @}

  */

#endif /* defined (USB) */

#endif /* HAL_PCD_MODULE_ENABLED */

/**

  * @}

  */

/**

  * @}

  */

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