/**
  ******************************************************************************
  * @file    USB_Device/HID_Standalone/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) 2015 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 "main.h"
#include "usbd_hid.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define CURSOR_STEP     5
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
PCD_HandleTypeDef hpcd;
__IO uint32_t remotewakeupon = 0;
uint8_t HID_Buffer[4];
extern USBD_HandleTypeDef USBD_Device;

/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
static void SystemClockConfig_STOP(void);

/*******************************************************************************
                       PCD BSP Routines
*******************************************************************************/

/**
  * @brief  Initializes the PCD MSP.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_MspInit(PCD_HandleTypeDef *hpcd)
{
  GPIO_InitTypeDef  GPIO_InitStruct;

  /* Enable the GPIOA clock for USB DataLines */
  __HAL_RCC_GPIOA_CLK_ENABLE();

    /* Enable the GPIOG clock for USB  ull-Up */
  OTG_FS1_POWER_SWITCH_PORT_CLK_ENABLE();

  /* Configure USB DM pin. This is optional, and maintained only for user guidance. */
  GPIO_InitStruct.Pin = GPIO_PIN_11|GPIO_PIN_12;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  GPIO_InitStruct.Pin = OTG_FS1_POWER_SWITCH_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(OTG_FS1_POWER_SWITCH_PORT, &GPIO_InitStruct);

  /* Enable USB Clock */
  __HAL_RCC_USB_CLK_ENABLE();

  /* Enable SYSCFG Clock */
  __HAL_RCC_SYSCFG_CLK_ENABLE();

#if defined (USE_USB_INTERRUPT_REMAPPED)
  /*USB interrupt remapping enable */
  __HAL_REMAPINTERRUPT_USB_ENABLE();
#endif

  if (hpcd->Init.low_power_enable == 1)
  {
    /* Enable EXTI for USB wakeup */
    __HAL_USB_WAKEUP_EXTI_CLEAR_FLAG();
    __HAL_USB_WAKEUP_EXTI_ENABLE_RISING_EDGE();
    __HAL_USB_WAKEUP_EXTI_ENABLE_IT();

#if defined (USE_USB_INTERRUPT_DEFAULT)
    /* USB Default Wakeup Interrupt */
    HAL_NVIC_EnableIRQ(USBWakeUp_IRQn);

    /* Enable USB Wake-up interrupt */
    HAL_NVIC_SetPriority(USBWakeUp_IRQn, 0, 0);

#elif defined (USE_USB_INTERRUPT_REMAPPED)

    /* USB Remapped Wakeup Interrupt */
    HAL_NVIC_EnableIRQ(USBWakeUp_RMP_IRQn);

    /* Enable USB Wake-up interrupt */
    HAL_NVIC_SetPriority(USBWakeUp_RMP_IRQn, 0, 0);
#endif
  }
/* Set USB Default FS Interrupt priority */
  HAL_NVIC_SetPriority(USB_LP_CAN_RX0_IRQn, 0x0F, 0);

  /* Enable USB FS Interrupt */
  HAL_NVIC_EnableIRQ(USB_LP_CAN_RX0_IRQn);

#if defined (USE_USB_INTERRUPT_DEFAULT)
#else
  /* Set USB Interrupt priority */
  HAL_NVIC_SetPriority(USB_LP_CAN_RX0_IRQn, 5, 0);

  /* Enable USB Interrupt */
  HAL_NVIC_EnableIRQ(USB_LP_CAN_RX0_IRQn);
#endif /* GENERATOR_STM32F3XX */
}

/**
  * @brief  De-Initializes the PCD MSP.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_MspDeInit(PCD_HandleTypeDef *hpcd)
{
  /* Disable USB FS Clock */
  __HAL_RCC_USB_CLK_DISABLE();

  /* Disable SYSCFG Clock */
  __HAL_RCC_SYSCFG_CLK_DISABLE();
}

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

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

/**
  * @brief  DataOut Stage callback.
  * @param  hpcd: PCD handle
  * @param  epnum: Endpoint Number
  * @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  DataIn Stage callback.
  * @param  hpcd: PCD handle
  * @param  epnum: Endpoint Number
  * @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  Reset callback.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
{
  USBD_LL_SetSpeed(hpcd->pData, USBD_SPEED_FULL);
  /* Reset Device */
  USBD_LL_Reset(hpcd->pData);
}

/**
  * @brief  Suspend callback.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd)
{
  /* Inform USB library that core enters in suspend Mode */
  USBD_LL_Suspend(hpcd->pData);

  /*Enter in STOP mode */
  if (hpcd->Init.low_power_enable)
  {
    /* Set SLEEPDEEP bit and SleepOnExit of Cortex System Control Register */
    SCB->SCR |= (uint32_t)((uint32_t)(SCB_SCR_SLEEPDEEP_Msk | SCB_SCR_SLEEPONEXIT_Msk));

  }
}

/**
  * @brief  Resume callback.
  * @param  hpcd: PCD handle
  * @retval None
  */
void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
{
  if ((hpcd->Init.low_power_enable) && (remotewakeupon == 0))
  {
    SystemClockConfig_STOP();

    /* Reset SLEEPDEEP bit of Cortex System Control Register */
    SCB->SCR &= (uint32_t)~((uint32_t)(SCB_SCR_SLEEPDEEP_Msk | SCB_SCR_SLEEPONEXIT_Msk));
  }
  USBD_LL_Resume(hpcd->pData);
  remotewakeupon = 0;
}

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

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

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

/**
  * @brief  Disconnect 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  Initializes the Low Level portion of the Device driver.
  * @param  pdev: Device handle
  * @retval USBD Status
  */
USBD_StatusTypeDef USBD_LL_Init(USBD_HandleTypeDef *pdev)
{
  /* Set LL Driver parameters */
  hpcd.Instance = USB;
  hpcd.Init.dev_endpoints = 8;
  hpcd.Init.phy_itface = PCD_PHY_EMBEDDED;
  hpcd.Init.speed = PCD_SPEED_FULL;
  hpcd.Init.low_power_enable = 1;
  /* Link The driver to the stack */
  hpcd.pData = pdev;
  pdev->pData = &hpcd;
  /* Initialize LL Driver */
  HAL_PCD_Init(pdev->pData);

  HAL_PCDEx_PMAConfig(pdev->pData , 0x00 , PCD_SNG_BUF, 0x18);
  HAL_PCDEx_PMAConfig(pdev->pData , 0x80 , PCD_SNG_BUF, 0x58);
  HAL_PCDEx_PMAConfig(pdev->pData , 0x81 , PCD_SNG_BUF, 0x100);

  return USBD_OK;
}

/**
  * @brief  De-Initializes 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  Starts 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  Stops 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  Opens 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  Closes 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  Flushes 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  Sets 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  Clears 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  Returns 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  Assigns a 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  Transmits 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,
                                    uint16_t size)
{
  HAL_PCD_EP_Transmit(pdev->pData, ep_addr, pbuf, size);
  return USBD_OK;
}

/**
  * @brief  Prepares 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,
                                          uint16_t size)
{
  HAL_PCD_EP_Receive(pdev->pData, ep_addr, pbuf, size);
  return USBD_OK;
}

/**
  * @brief  Returns the last transfered packet size.
  * @param  pdev: 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  Delays routine for the USB Device Library.
  * @param  Delay: Delay in ms
  * @retval None
  */
void USBD_LL_Delay(uint32_t Delay)
{
  HAL_Delay(Delay);
}

/**
  * @brief  static single allocation.
  * @param  size: size of allocated memory
  * @retval None
  */
void *USBD_static_malloc(uint32_t size)
{
  static uint32_t mem[sizeof(USBD_HID_HandleTypeDef) / 4 + 1];
  return mem;
}

/**
  * @brief  Dummy memory free
  * @param  *p pointer to allocated  memory address
  * @retval None
  */
void USBD_static_free(void *p)
{

}

/**
  * @brief  Software Device Connection
  * @param  hpcd: PCD handle
  * @param  state: connection state (0 : disconnected / 1: connected)
  * @retval None
  */
void HAL_PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state)
{
  if (state == 0)
  {
    HAL_GPIO_WritePin(OTG_FS1_POWER_SWITCH_PORT, OTG_FS1_POWER_SWITCH_PIN, GPIO_PIN_RESET);
  }
  else
  {
    HAL_GPIO_WritePin(OTG_FS1_POWER_SWITCH_PORT, OTG_FS1_POWER_SWITCH_PIN, GPIO_PIN_SET);
  }
}

/**
  * @brief  Configures system clock after wakeup from STOP mode.
  * @param  None
  * @retval None
  */
static void SystemClockConfig_STOP(void)
{
  RCC_OscInitTypeDef        RCC_OscInitStruct;
  RCC_ClkInitTypeDef        RCC_ClkInitStruct;

  /* Enable HSE Oscillator and activate PLL with HSE as source */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  HAL_RCC_OscConfig(&RCC_OscInitStruct);

  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
  clocks dividers */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);

  /* Change Systick priority: should be higher than User push-button interrupt */
  HAL_NVIC_SetPriority(SysTick_IRQn,0,0);
}


/**
  * @brief  Gets Pointer Data.
  * @param  pbuf: Pointer to report
  * @retval None
  */
static void GetPointerData(uint8_t *pbuf)
{
  static int8_t cnt = 0;
  int8_t  x = 0, y = 0 ;

  if(cnt++ > 0)
  {
    x = CURSOR_STEP;
  }
  else
  {
    x = -CURSOR_STEP;
  }

  pbuf[0] = 0;
  pbuf[1] = x;
  pbuf[2] = y;
  pbuf[3] = 0;
}

/**
  * @brief  GPIO EXTI Callback function
  *         Handle remote-wakeup through key button
  * @param  GPIO_Pin
  * @retval None
  */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
  if (GPIO_Pin == USER_BUTTON_PIN)
  {
    if ((((USBD_HandleTypeDef *)hpcd.pData)->dev_remote_wakeup == 1)&&
        (((USBD_HandleTypeDef *)hpcd.pData)->dev_state == USBD_STATE_SUSPENDED))
    {
      if ((&hpcd)->Init.low_power_enable)
      {
        /* Reset SLEEPDEEP bit of Cortex System Control Register */
        SCB->SCR &= (uint32_t)~((uint32_t)(SCB_SCR_SLEEPDEEP_Msk | SCB_SCR_SLEEPONEXIT_Msk));

        SystemClockConfig_STOP();
      }

      /* Activate Remote wakeup */
      HAL_PCD_ActivateRemoteWakeup((&hpcd));

      /* remote wakeup delay */
      HAL_Delay(10);

      /* Disable Remote wakeup */
      HAL_PCD_DeActivateRemoteWakeup((&hpcd));

      /* change remote_wakeup feature to 0*/
      ((USBD_HandleTypeDef *)hpcd.pData)->dev_remote_wakeup=0;
       remotewakeupon = 1;
    }
    else if (((USBD_HandleTypeDef *) hpcd.pData)->dev_state ==
         USBD_STATE_CONFIGURED)
    {
      GetPointerData(HID_Buffer);
      USBD_HID_SendReport(&USBD_Device, HID_Buffer, 4);
    }
    else
    {
      /* ... */
    }
  }
}

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