/**
  ******************************************************************************
  * @file    usb_bsp.c
  * @author  MCD Application Team
  * @version V1.0.0
  * @date    31-July-2012
  * @brief   This file implements the board support package for the USB host library
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
  */ 

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

#include "usb_bsp.h"

/** @addtogroup USBH_USER   
  * @{
  */

/** @defgroup USB_BSP
  * @brief This file is responsible to offer board support package
  * @{
  */

/** @defgroup USB_BSP_Private_Defines
  * @{
  */
#define USE_ACCURATE_TIME
#define TIM_MSEC_DELAY       0x01
#define TIM_USEC_DELAY       0x02
#define HOST_OVRCURR_PORT                  GPIOE
#define HOST_OVRCURR_LINE                  GPIO_Pin_1
#define HOST_OVRCURR_PORT_SOURCE           GPIO_PortSourceGPIOE
#define HOST_OVRCURR_PIN_SOURCE            GPIO_PinSource1
#define HOST_OVRCURR_PORT_RCC              RCC_APB2Periph_GPIOE
#define HOST_OVRCURR_EXTI_LINE             EXTI_Line1
#define HOST_OVRCURR_IRQn                  EXTI1_IRQn 

#define HOST_POWERSW_PORT_RCC              RCC_AHB1Periph_GPIOH
#define HOST_POWERSW_PORT                  GPIOH
#define HOST_POWERSW_VBUS                  GPIO_Pin_5

#define HOST_SOF_OUTPUT_RCC                RCC_APB2Periph_GPIOA
#define HOST_SOF_PORT                      GPIOA
#define HOST_SOF_SIGNAL                    GPIO_Pin_8
/**
  * @}
  */


/** @defgroup USB_BSP_Private_TypesDefinitions
  * @{
  */
/**
  * @}
  */



/** @defgroup USB_BSP_Private_Macros
  * @{
  */ 
/**
  * @}
  */

/** @defgroup USBH_BSP_Private_Variables
  * @{
  */
ErrorStatus HSEStartUpStatus;
#ifdef USE_ACCURATE_TIME 
__IO uint32_t BSP_delay = 0;
#endif
/**
  * @}
  */

/** @defgroup USBH_BSP_Private_FunctionPrototypes
  * @{
  */

#ifdef USE_ACCURATE_TIME
static void BSP_SetTime(uint8_t Unit);
static void BSP_Delay(uint32_t nTime,uint8_t Unit);
static void USB_OTG_BSP_TimeInit ( void );
#endif
/**
  * @}
  */

/** @defgroup USB_BSP_Private_Functions
  * @{
  */

/**
  * @brief  Initilizes the BSP configuration
  * @param  pdev : USB Core Instance structure
  * @retval None
  */
void USB_OTG_BSP_Init(USB_OTG_CORE_HANDLE *pdev)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  if (pdev->cfg.coreID == USB_OTG_FS_CORE_ID)
  {
    RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOA , ENABLE);

    /* Configure SOF VBUS ID DM DP Pins */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8  | GPIO_Pin_9  | GPIO_Pin_11 | GPIO_Pin_12;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    GPIO_PinAFConfig(GPIOA,GPIO_PinSource8,GPIO_AF_OTG1_FS) ;
    GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_OTG1_FS) ;
    GPIO_PinAFConfig(GPIOA,GPIO_PinSource11,GPIO_AF_OTG1_FS) ;
    GPIO_PinAFConfig(GPIOA,GPIO_PinSource12,GPIO_AF_OTG1_FS) ;

    /* this for ID line debug */
    GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_10;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP ;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
    GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_OTG1_FS) ;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
    RCC_AHB2PeriphClockCmd(RCC_AHB2Periph_OTG_FS, ENABLE) ;
  }
  else if (pdev->cfg.coreID == USB_OTG_HS_CORE_ID)
  {
#ifdef USE_ULPI_PHY // ULPI
    RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOB |
                           RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOH |
                             RCC_AHB1Periph_GPIOI, ENABLE);


    GPIO_PinAFConfig(GPIOA,GPIO_PinSource3, GPIO_AF_OTG2_HS) ; // D0
    GPIO_PinAFConfig(GPIOA,GPIO_PinSource5, GPIO_AF_OTG2_HS) ; // CLK
    GPIO_PinAFConfig(GPIOB,GPIO_PinSource0, GPIO_AF_OTG2_HS) ; // D1
    GPIO_PinAFConfig(GPIOB,GPIO_PinSource1, GPIO_AF_OTG2_HS) ; // D2
    GPIO_PinAFConfig(GPIOB,GPIO_PinSource5, GPIO_AF_OTG2_HS) ; // D7
    GPIO_PinAFConfig(GPIOB,GPIO_PinSource10,GPIO_AF_OTG2_HS) ; // D3
    GPIO_PinAFConfig(GPIOB,GPIO_PinSource11,GPIO_AF_OTG2_HS) ; // D4
    GPIO_PinAFConfig(GPIOB,GPIO_PinSource12,GPIO_AF_OTG2_HS) ; // D5
    GPIO_PinAFConfig(GPIOB,GPIO_PinSource13,GPIO_AF_OTG2_HS) ; // D6
    GPIO_PinAFConfig(GPIOH,GPIO_PinSource4, GPIO_AF_OTG2_HS) ; // NXT
    GPIO_PinAFConfig(GPIOI,GPIO_PinSource11,GPIO_AF_OTG2_HS) ; // DIR
    GPIO_PinAFConfig(GPIOC,GPIO_PinSource0, GPIO_AF_OTG2_HS) ; // STP

    // CLK
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 ;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    // D0
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3  ;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
    GPIO_Init(GPIOA, &GPIO_InitStructure);



    // D1 D2 D3 D4 D5 D6 D7
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1  |
      GPIO_Pin_5 | GPIO_Pin_10 | 
        GPIO_Pin_11| GPIO_Pin_12 | 
          GPIO_Pin_13 ;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
    GPIO_Init(GPIOB, &GPIO_InitStructure);


    // STP
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0  ;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_Init(GPIOC, &GPIO_InitStructure);

    //NXT  
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_Init(GPIOH, &GPIO_InitStructure);


    //DIR
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 ;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_Init(GPIOI, &GPIO_InitStructure);


    RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_OTG_HS | 
                           RCC_AHB1Periph_OTG_HS_ULPI, ENABLE) ;

#else
    
#ifdef USE_I2C_PHY
    RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOB , ENABLE);
    /* Configure RESET INTN SCL SDA (Phy/I2C) Pins */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | 
      GPIO_Pin_1 | 
        GPIO_Pin_10 | 
          GPIO_Pin_11;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    GPIO_PinAFConfig(GPIOB,GPIO_PinSource0,GPIO_AF_OTG2_FS) ;
    GPIO_PinAFConfig(GPIOB,GPIO_PinSource1,GPIO_AF_OTG2_FS) ;
    GPIO_PinAFConfig(GPIOB,GPIO_PinSource10,GPIO_AF_OTG2_FS) ;
    GPIO_PinAFConfig(GPIOB,GPIO_PinSource11,GPIO_AF_OTG2_FS);
    RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_OTG_HS, ENABLE) ;

#else 

    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB , ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12  | 
      GPIO_Pin_13 |
        GPIO_Pin_14 | 
          GPIO_Pin_15;

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    GPIO_PinAFConfig(GPIOB,GPIO_PinSource12, GPIO_AF_OTG2_FS) ;
    GPIO_PinAFConfig(GPIOB,GPIO_PinSource13,GPIO_AF_OTG2_FS) ;
    GPIO_PinAFConfig(GPIOB,GPIO_PinSource14,GPIO_AF_OTG2_FS) ;
    GPIO_PinAFConfig(GPIOB,GPIO_PinSource15,GPIO_AF_OTG2_FS) ;
    RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_OTG_HS, ENABLE) ;
#endif
#endif
  }

  /* Intialize Timer for delay function */
  USB_OTG_BSP_TimeInit();
}

/**
  * @brief  Configures USB Global interrupt
  * @param  pdev : USB Core Instance structure
  * @retval None
  */
void USB_OTG_BSP_EnableInterrupt(USB_OTG_CORE_HANDLE *pdev)
{
  NVIC_InitTypeDef NVIC_InitStructure;

#ifdef USE_USB_OTG_HS
  NVIC_InitStructure.NVIC_IRQChannel = OTG_HS_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 4;//1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
#endif

#ifdef USE_USB_OTG_FS
  NVIC_InitStructure.NVIC_IRQChannel = OTG_FS_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3;//1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
#endif

#ifdef USB_OTG_HS_DEDICATED_EP1_ENABLED
  NVIC_InitStructure.NVIC_IRQChannel = OTG_HS_EP1_OUT_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  NVIC_InitStructure.NVIC_IRQChannel = OTG_HS_EP1_IN_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
#endif
}

/**
  * @brief  Drives the Vbus signal through IO
  * @param  state : VBUS states
  *         pdev : USB Core Instance structure
  * @retval None
  */
void USB_OTG_BSP_DriveVBUS(USB_OTG_CORE_HANDLE *pdev, uint8_t state)
{
  /*
  On-chip 5 V VBUS generation is not supported. For this reason, a charge pump 
  or, if 5 V are available on the application board, a basic power switch, must 
  be added externally to drive the 5 V VBUS line. The external charge pump can 
  be driven by any GPIO output. When the application decides to power on VBUS 
  using the chosen GPIO, it must also set the port power bit in the host port 
  control and status register (PPWR bit in OTG_FS_HPRT).
  
  Bit 12 PPWR: Port power
  The application uses this field to control power to this port, and the core 
  clears this bit on an overcurrent condition.
  */ 
  if (0 == state)
  {
    /* DISABLE is needed on output of the Power Switch */
    GPIO_SetBits(HOST_POWERSW_PORT, HOST_POWERSW_VBUS);
  }
  else
  {
    /*ENABLE the Power Switch by driving the Enable LOW */
    GPIO_ResetBits(HOST_POWERSW_PORT, HOST_POWERSW_VBUS);
  }
  
}

/**
  * @brief  Configures the IO for the Vbus and OverCurrent
  * @param  pdev : USB Core Instance structure
  * @retval None
  */

void  USB_OTG_BSP_ConfigVBUS(USB_OTG_CORE_HANDLE *pdev)
{
  GPIO_InitTypeDef GPIO_InitStructure; 

  RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOH , ENABLE);

  GPIO_InitStructure.GPIO_Pin = HOST_POWERSW_VBUS;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP ;
  GPIO_Init(HOST_POWERSW_PORT,&GPIO_InitStructure);

  /* By Default, DISABLE is needed on output of the Power Switch */
  USB_OTG_BSP_DriveVBUS (pdev, 0);

  USB_OTG_BSP_mDelay(200);   /* Delay is need for stabilising the Vbus Low 
  in Reset Condition, when Vbus=1 and Reset-button is pressed by user */
}

/**
  * @brief  Initializes delay unit using Timer2
  * @param  None
  * @retval None
  */
static void USB_OTG_BSP_TimeInit ( void )
{
#ifdef USE_ACCURATE_TIME
  NVIC_InitTypeDef NVIC_InitStructure;

  /* Enable the TIM2 gloabal Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init(&NVIC_InitStructure);

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
#endif
}

/**
  * @brief  This function provides delay time in micro sec
  * @param  usec : Value of delay required in micro sec
  * @retval None
  */
void USB_OTG_BSP_uDelay (const uint32_t usec)
{

#ifdef USE_ACCURATE_TIME
  BSP_Delay(usec,TIM_USEC_DELAY);
#else
  __IO uint32_t count = 0;
  const uint32_t utime = (120 * usec / 7);
  do
  {
    if ( ++count > utime )
    {
      return ;
    }
  }
  while (1);
#endif

}

/**
  * @brief  This function provides delay time in milli sec
  * @param  msec : Value of delay required in milli sec
  * @retval None
  */
void USB_OTG_BSP_mDelay (const uint32_t msec)
{ 
#ifdef USE_ACCURATE_TIME  
  BSP_Delay(msec,TIM_MSEC_DELAY);
#else
  USB_OTG_BSP_uDelay(msec * 1000);
#endif
}

/**
  * @brief  Time base IRQ
  * @param  None
  * @retval None
  */
void USB_OTG_BSP_TimerIRQ (void)
{
#ifdef USE_ACCURATE_TIME 
  
  if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)
  {
    TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
    if (BSP_delay > 0x00)
    { 
      BSP_delay--;
    }
    else
    {
      TIM_Cmd(TIM2,DISABLE);
    }
  }
#endif
} 

#ifdef USE_ACCURATE_TIME 
/**
  * @brief  Delay routine based on TIM2
  * @param  nTime : Delay Time 
  * @param  unit : Delay Time unit : mili sec / micro sec
  * @retval None
  */
static void BSP_Delay(uint32_t nTime, uint8_t unit)
{
  BSP_delay = nTime;
  BSP_SetTime(unit);
  while(BSP_delay != 0);
  TIM_Cmd(TIM2,DISABLE);
}

/**
* @brief  Configures TIM2 for delay routine based on TIM2
* @param  unit : msec /usec
* @retval None
*/
static void BSP_SetTime(uint8_t unit)
{
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;

  TIM_Cmd(TIM2,DISABLE);
  TIM_ITConfig(TIM2, TIM_IT_Update, DISABLE);


  if(unit == TIM_USEC_DELAY)
  {  
    TIM_TimeBaseStructure.TIM_Period = 11;
  }
  else if(unit == TIM_MSEC_DELAY)
  {
    TIM_TimeBaseStructure.TIM_Period = 11999;
  }
  TIM_TimeBaseStructure.TIM_Prescaler = 5;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
  TIM_ClearITPendingBit(TIM2, TIM_IT_Update);

  TIM_ARRPreloadConfig(TIM2, ENABLE);

  /* TIM IT enable */
  TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);

  /* TIM2 enable counter */ 
  TIM_Cmd(TIM2, ENABLE);
}
#endif

/**
* @}
*/ 

/**
* @}
*/ 

/**
* @}
*/

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