/**
  ******************************************************************************
  * @file           : usb_device.c
  * @version        : v2.0_Cube
  * @brief          : This file implements the USB Device
  ******************************************************************************
  * This notice applies to any and all portions of this file
  * that are not between comment pairs USER CODE BEGIN and
  * USER CODE END. Other portions of this file, whether 
  * inserted by the user or by software development tools
  * are owned by their respective copyright owners.
  *
  * Copyright (c) 2018 STMicroelectronics International N.V. 
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without 
  * modification, are permitted, provided that the following conditions are met:
  *
  * 1. Redistribution of source code must retain the above copyright notice, 
  *    this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright notice,
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  * 3. Neither the name of STMicroelectronics nor the names of other 
  *    contributors to this software may be used to endorse or promote products 
  *    derived from this software without specific written permission.
  * 4. This software, including modifications and/or derivative works of this 
  *    software, must execute solely and exclusively on microcontroller or
  *    microprocessor devices manufactured by or for STMicroelectronics.
  * 5. Redistribution and use of this software other than as permitted under 
  *    this license is void and will automatically terminate your rights under 
  *    this license. 
  *
  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

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

#include "usb_device.h"
#include "usbd_core.h"
#include "usbd_desc.h"
#include "usbd_cdc.h"
#include "usbd_cdc_if.h"

/* USER CODE BEGIN Includes */

#include "cmsis_os.h"
#include "LEDIndicator.h"
#include "Log.h"

/* USER CODE END Includes */

/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/

extern osMessageQId ioEventQueueHandle;

/* USER CODE END PV */

/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/

/* USER CODE END PFP */

/* Return USBD_OK if the Battery Charging Detection mode (BCD) is used, else USBD_FAIL. */
extern USBD_StatusTypeDef USBD_LL_BatteryCharging(USBD_HandleTypeDef *pdev);

/* USB Device Core handle declaration. */
USBD_HandleTypeDef hUsbDeviceFS;

/*
 * -- Insert your variables declaration here --
 */
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/*
 * -- Insert your external function declaration here --
 */
/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

/**
  * Init USB device Library, add supported class and start the library
  * @retval None
  */
void MX_USB_DEVICE_Init(void)
{
  /* USER CODE BEGIN USB_DEVICE_Init_PreTreatment */
  // Set the MaxPower value to 500mA -- the amount of power needed to
  // charge the battery.
  uint16_t length;
  uint8_t* cfg = USBD_CDC.GetFSConfigDescriptor(&length);
  cfg[8] = 0xFA;
  /* USER CODE END USB_DEVICE_Init_PreTreatment */
  
  /* Init Device Library, add supported class and start the library. */
  USBD_Init(&hUsbDeviceFS, &FS_Desc, DEVICE_FS);
  USBD_RegisterClass(&hUsbDeviceFS, &USBD_CDC);
  USBD_CDC_RegisterInterface(&hUsbDeviceFS, &USBD_Interface_fops_FS);
  /* Verify if the Battery Charging Detection mode (BCD) is used : */
  /* If yes, the USB device is started in the HAL_PCDEx_BCD_Callback */
  /* upon reception of PCD_BCD_DISCOVERY_COMPLETED message. */
  /* If no, the USB device is started now. */
  if (USBD_LL_BatteryCharging(&hUsbDeviceFS) != USBD_OK) {
  USBD_Start(&hUsbDeviceFS);
  }
  /* USER CODE BEGIN USB_DEVICE_Init_PostTreatment */
  
  /* USER CODE END USB_DEVICE_Init_PostTreatment */
}

/**
  * @brief  Send BCD message to user layer
  * @param  hpcd: PCD handle
  * @param  msg: LPM message
  * @retval None
  */
void HAL_PCDEx_BCD_Callback(PCD_HandleTypeDef *hpcd, PCD_BCD_MsgTypeDef msg)
{
    UNUSED(hpcd);
    // USBD_HandleTypeDef usbdHandle = hUsbDeviceFS;

  static int downstream_port = 0;

  /* USER CODE BEGIN 7 */
    switch(msg)
    {
      case PCD_BCD_CONTACT_DETECTION:
          downstream_port = 0;
          break;

      case PCD_BCD_STD_DOWNSTREAM_PORT:
          // Only charge after negotiation
          DEBUG("Detected standard downstream USB port");
          downstream_port = 1;
          break;

      case PCD_BCD_CHARGING_DOWNSTREAM_PORT:
          DEBUG("Detected charging downstream USB port");
          osMessagePut(ioEventQueueHandle, CMD_USB_CHARGE_ENABLE, 0);
          downstream_port = 1;
          break;

      case PCD_BCD_DEDICATED_CHARGING_PORT:
          DEBUG("Detected dedicated charging port");
          osMessagePut(ioEventQueueHandle, CMD_USB_CHARGE_ENABLE, 0);
          downstream_port = 0;
          break;

      case PCD_BCD_DISCOVERY_COMPLETED:
          if (downstream_port) {
              osMessagePut(ioEventQueueHandle, CMD_USB_DISCOVERY_COMPLETE, 0);
          }
          break;

      case PCD_BCD_ERROR:
          osMessagePut(ioEventQueueHandle, CMD_USB_DISCOVERY_ERROR, 0);
          break;
      default:
      break;
    }
  /* USER CODE END 7 */
}

/**
  * @}
  */

/**
  * @}
  */

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