/**
  ******************************************************************************
  * @file    Demonstrations/Src/usbd_conf.c
  * @author  MCD Application Team
  * @brief   This file implements the USB Device library callbacks and MSP
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2017 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 "stm32f4xx_hal.h"
#include "usbd_core.h"

PCD_HandleTypeDef hpcd;

/*******************************************************************************
                       PCD BSP Routines
*******************************************************************************/
/**
  * @brief  Initializes the PCD MSP.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_MspInit(PCD_HandleTypeDef *hpcd)
{
  /* Note: On STM32F4-Discovery board only USB OTG FS core is supported. */
  GPIO_InitTypeDef  GPIO_InitStruct;
  
  if(hpcd->Instance == USB_OTG_FS)
  {
    /* Configure USB FS GPIOs */
    __HAL_RCC_GPIOA_CLK_ENABLE();
    
    /* Configure DM DP Pins */
    GPIO_InitStruct.Pin = GPIO_PIN_11 | GPIO_PIN_12;
    GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Alternate = GPIO_AF10_OTG_FS;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); 
    
	/* Configure VBUS Pin */
    GPIO_InitStruct.Pin = GPIO_PIN_9;
    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
    
    /* This for ID line debug */
    GPIO_InitStruct.Pin = GPIO_PIN_10;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
    GPIO_InitStruct.Pull = GPIO_PULLUP;
    GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF10_OTG_FS;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); 
    
    /* Enable USB FS Clocks */ 
    __HAL_RCC_USB_OTG_FS_CLK_ENABLE();
    
    /* Set USBFS Interrupt to the lowest priority */
    HAL_NVIC_SetPriority(OTG_FS_IRQn, 3, 0);
    
    /* Enable USBFS Interrupt */
    HAL_NVIC_EnableIRQ(OTG_FS_IRQn);
  } 
}

/**
  * @brief  DeInitializes the PCD MSP.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_MspDeInit(PCD_HandleTypeDef *hpcd)
{
  if(hpcd->Instance == USB_OTG_FS)
  {  
    /* Disable USB FS Clocks */ 
    __HAL_RCC_USB_OTG_FS_CLK_DISABLE();
  }
}

/*******************************************************************************
                       LL Driver Callbacks (PCD -> USB Device Library)
*******************************************************************************/


/**
  * @brief  SOF callback.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd)
{
  USBD_LL_SetupStage(hpcd->pData, (uint8_t *)hpcd->Setup);
}

/**
  * @brief  SOF callback.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
  USBD_LL_DataOutStage(hpcd->pData, epnum, hpcd->OUT_ep[epnum].xfer_buff);
}

/**
  * @brief  SOF callback.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
  USBD_LL_DataInStage(hpcd->pData, epnum, hpcd->IN_ep[epnum].xfer_buff);
} 

/**
  * @brief  SOF callback.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
{
  USBD_LL_SOF(hpcd->pData);
}

/**
  * @brief  SOF callback.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
{ 
  USBD_SpeedTypeDef speed = USBD_SPEED_FULL;

  /*Set USB Current Speed*/
  switch (hpcd->Init.speed)
  {
  case PCD_SPEED_HIGH:
    speed = USBD_SPEED_HIGH;
    break;
    
  case PCD_SPEED_FULL:
    speed = USBD_SPEED_FULL;    
    break;
    
  default:
    speed = USBD_SPEED_FULL;
    break;
  }
  USBD_LL_SetSpeed(hpcd->pData, speed);  
  
  /*Reset Device*/
  USBD_LL_Reset(hpcd->pData);
}

/**
  * @brief  SOF callback.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd)
{
  USBD_LL_Suspend(hpcd->pData);
}

/**
  * @brief  SOF callback.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
{
  USBD_LL_Resume(hpcd->pData);
}

/**
  * @brief  SOF callback.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
  USBD_LL_IsoOUTIncomplete(hpcd->pData, epnum);
}

/**
  * @brief  SOF callback.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
  USBD_LL_IsoINIncomplete(hpcd->pData, epnum);
}

/**
  * @brief  SOF callback.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd)
{
  USBD_LL_DevConnected(hpcd->pData);
}

/**
  * @brief  SOF callback.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd)
{
  USBD_LL_DevDisconnected(hpcd->pData);
}

/*******************************************************************************
                       LL Driver Interface (USB Device Library --> PCD)
*******************************************************************************/
/**
  * @brief  USBD_LL_Init 
  *         Initialize the Low Level portion of the Device driver.
  * @param  pdev: Device handle
  * @retval USBD Status
  */
USBD_StatusTypeDef  USBD_LL_Init (USBD_HandleTypeDef *pdev)
{
   /* Change Systick prioity */
  NVIC_SetPriority (SysTick_IRQn, 0);  
  
  /*Set LL Driver parameters */
  hpcd.Instance = USB_OTG_FS;
  hpcd.Init.dev_endpoints = 4; 
  hpcd.Init.use_dedicated_ep1 = 0;  
  hpcd.Init.dma_enable = 0;
  hpcd.Init.low_power_enable = 0;
  hpcd.Init.phy_itface = PCD_PHY_EMBEDDED; 
  hpcd.Init.Sof_enable = 0;
  hpcd.Init.speed = PCD_SPEED_FULL;
  hpcd.Init.vbus_sensing_enable = 1;
  /* Link The driver to the stack */
   hpcd.pData = pdev;
  pdev->pData = &hpcd;
  /*Initialize LL Driver */
  HAL_PCD_Init(&hpcd);
  
  HAL_PCDEx_SetRxFiFo(&hpcd, 0x80);
  HAL_PCDEx_SetTxFiFo(&hpcd, 0, 0x40);
  HAL_PCDEx_SetTxFiFo(&hpcd, 1, 0x80); 
 
  return USBD_OK;
}

/**
  * @brief  USBD_LL_DeInit 
  *         De-Initialize the Low Level portion of the Device driver.
  * @param  pdev: Device handle
  * @retval USBD Status
  */
USBD_StatusTypeDef  USBD_LL_DeInit (USBD_HandleTypeDef *pdev)
{
  HAL_PCD_DeInit(pdev->pData);
  return USBD_OK; 
}

/**
  * @brief  USBD_LL_Start 
  *         Start the Low Level portion of the Device driver.
  * @param  pdev: Device handle
  * @retval USBD Status
  */
USBD_StatusTypeDef  USBD_LL_Start(USBD_HandleTypeDef *pdev)
{
  HAL_PCD_Start(pdev->pData);
  return USBD_OK; 
}

/**
  * @brief  USBD_LL_Stop 
  *         Stop the Low Level portion of the Device driver.
  * @param  pdev: Device handle
  * @retval USBD Status
  */
USBD_StatusTypeDef  USBD_LL_Stop (USBD_HandleTypeDef *pdev)
{
  HAL_PCD_Stop(pdev->pData);
  return USBD_OK; 
}

/**
  * @brief  USBD_LL_OpenEP 
  *         Open an endpoint of the Low Level Driver.
  * @param  pdev: device handle
  * @param  ep_addr: Endpoint Number
  * @param  ep_type: Endpoint Type
  * @param  ep_mps: Endpoint Max Packet Size                 
  * @retval USBD Status
  */
USBD_StatusTypeDef  USBD_LL_OpenEP  (USBD_HandleTypeDef *pdev, 
                                      uint8_t  ep_addr,                                      
                                      uint8_t  ep_type,
                                      uint16_t ep_mps)
{
    
  HAL_PCD_EP_Open(pdev->pData, 
                  ep_addr, 
                  ep_mps, 
                  ep_type);
    
  return USBD_OK; 
}

/**
  * @brief  USBD_LL_CloseEP 
  *         Close an endpoint of the Low Level Driver.
  * @param  pdev: device handle
  * @param  ep_addr: Endpoint Number      
  * @retval USBD Status
  */
USBD_StatusTypeDef  USBD_LL_CloseEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr)   
{
  HAL_PCD_EP_Close(pdev->pData, ep_addr);
  return USBD_OK; 
}

/**
  * @brief  USBD_LL_FlushEP 
  *         Flush an endpoint of the Low Level Driver.
  * @param  pdev: device handle
  * @param  ep_addr: Endpoint Number      
  * @retval USBD Status
  */
USBD_StatusTypeDef  USBD_LL_FlushEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr)   
{
  HAL_PCD_EP_Flush(pdev->pData, ep_addr);
  return USBD_OK; 
}

/**
  * @brief  USBD_LL_StallEP 
  *         Set a Stall condition on an endpoint of the Low Level Driver.
  * @param  pdev: device handle
  * @param  ep_addr: Endpoint Number      
  * @retval USBD Status
  */
USBD_StatusTypeDef  USBD_LL_StallEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr)   
{
  HAL_PCD_EP_SetStall(pdev->pData, ep_addr);
  return USBD_OK; 
}

/**
  * @brief  USBD_LL_ClearStallEP 
  *         Clear a Stall condition on an endpoint of the Low Level Driver.
  * @param  pdev: device handle
  * @param  ep_addr: Endpoint Number      
  * @retval USBD Status
  */
USBD_StatusTypeDef  USBD_LL_ClearStallEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr)   
{
  HAL_PCD_EP_ClrStall(pdev->pData, ep_addr);  
  return USBD_OK; 
}

/**
  * @brief  USBD_LL_IsStallEP 
  *         Return Stall condition.
  * @param  pdev: device handle
  * @param  ep_addr: Endpoint Number      
* @retval Stall (1: yes, 0: No)
  */
uint8_t USBD_LL_IsStallEP (USBD_HandleTypeDef *pdev, uint8_t ep_addr)   
{
  PCD_HandleTypeDef *hpcd = pdev->pData; 
  
  if((ep_addr & 0x80) == 0x80)
  {
    return hpcd->IN_ep[ep_addr & 0x7F].is_stall; 
  }
  else
  {
    return hpcd->OUT_ep[ep_addr & 0x7F].is_stall; 
  }
}
/**
  * @brief  USBD_LL_SetDevAddress 
  *         Assign an USB address to the device
  * @param  pdev: device handle
  * @param  ep_addr: Endpoint Number      
  * @retval USBD Status
  */
USBD_StatusTypeDef  USBD_LL_SetUSBAddress (USBD_HandleTypeDef *pdev, uint8_t dev_addr)   
{
  HAL_PCD_SetAddress(pdev->pData, dev_addr);
  return USBD_OK; 
  }

/**
  * @brief  USBD_LL_Transmit 
  *         Transmit data over an endpoint
  * @param  pdev: device handle
  * @param  ep_addr: Endpoint Number
  * @param  pbuf:pointer to data to be sent    
  * @param  size: data size    
  * @retval USBD Status
  */
USBD_StatusTypeDef  USBD_LL_Transmit (USBD_HandleTypeDef *pdev, 
                                      uint8_t  ep_addr,                                      
                                      uint8_t  *pbuf,
                                      uint32_t  size)
  {
  HAL_PCD_EP_Transmit(pdev->pData, ep_addr, pbuf, size);
  return USBD_OK;   
}

/**
  * @brief  USBD_LL_PrepareReceive 
  *         prepare an endpoint for reception
  * @param  pdev: device handle
  * @param  ep_addr: Endpoint Number
  * @param  pbuf:pointer to data to be received    
  * @param  size: data size              
  * @retval USBD Status
  */
USBD_StatusTypeDef  USBD_LL_PrepareReceive(USBD_HandleTypeDef *pdev, 
                                           uint8_t  ep_addr,                                      
                                           uint8_t  *pbuf,
                                           uint32_t  size)
{
  
  HAL_PCD_EP_Receive(pdev->pData, ep_addr, pbuf, size);
  return USBD_OK;   
  }

/**
  * @brief  USBD_LL_GetRxDataSize 
  *         Return the last transfered packet size.
  * @param  phost: Device handle
  * @param  ep_addr: Endpoint Number
  * @retval Recived Data Size
  */
uint32_t USBD_LL_GetRxDataSize  (USBD_HandleTypeDef *pdev, uint8_t  ep_addr)  
  {
  return HAL_PCD_EP_GetRxCount(pdev->pData, ep_addr);
}

/**
  * @brief  USBD_LL_Delay 
  *         Delay routine for the USB Device Library
  * @param  Delay: Delay in ms
  * @retval None
  */
void  USBD_LL_Delay (uint32_t Delay)
{
  HAL_Delay(Delay);  
}

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