usb_bsp.c

/**
  ******************************************************************************
  * @file    Audio_playback_and_record/src/usb_bsp.c
  * @author  MCD Application Team
  * @version V1.0.0
  * @date    28-October-2011
  * @brief   This file implements the board support package for the USB host library
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "usb_bsp.h"
#include "stm32f4_discovery.h"

/** @addtogroup STM32F4-Discovery_Audio_Player_Recorder
  * @{
  */

/* External variables --------------------------------------------------------*/
/* Private typedef -----------------------------------------------------------*/
/* Private defines -----------------------------------------------------------*/

#undef USE_ACCURATE_TIME
#define TIM_MSEC_DELAY                     0x01
#define TIM_USEC_DELAY                     0x02
#define HOST_OVRCURR_PORT                  GPIOD
#define HOST_OVRCURR_LINE                  GPIO_Pin_5
#define HOST_OVRCURR_PORT_SOURCE           GPIO_PortSourceGPIOD
#define HOST_OVRCURR_PIN_SOURCE            GPIO_PinSourceD
#define HOST_OVRCURR_PORT_RCC              RCC_APB2Periph_GPIOD
#define HOST_OVRCURR_EXTI_LINE             EXTI_Line5
#define HOST_OVRCURR_IRQn                  EXTI9_5_IRQn 


#define HOST_POWERSW_PORT_RCC              RCC_AHB1Periph_GPIOC
#define HOST_POWERSW_PORT                  GPIOC
#define HOST_POWERSW_VBUS                  GPIO_Pin_0

/* Private macros ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
ErrorStatus HSEStartUpStatus;
#ifdef USE_ACCURATE_TIME
 __IO uint32_t BSP_delay = 0;
#endif

/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
#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

/**
  * @brief  BSP_Init
  *         board user initializations
  * @param  None
  * @retval None
  */
void BSP_Init(void)
{
  /* Configure PA0 pin: User Key pin */
//  STM_EVAL_PBInit(BUTTON_USER, BUTTON_MODE_GPIO);
}


/**
  * @brief  USB_OTG_BSP_Init
  *         Initilizes BSP configurations
  * @param  None
  * @retval None
  */
void USB_OTG_BSP_Init(USB_OTG_CORE_HANDLE *pdev)
{
 /* Note: On STM32F4-Discovery board only USB OTG FS core is supported. */

  GPIO_InitTypeDef GPIO_InitStructure;
 #ifdef USE_USB_OTG_FS 

  RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOA , ENABLE);  
  
  /* Configure SOF VBUS ID DM DP Pins */
  GPIO_InitStructure.GPIO_Pin = 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_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 // USE_USB_OTG_HS 

  #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
 #endif //USB_OTG_HS

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

/**
  * @brief  USB_OTG_BSP_EnableInterrupt
  *         Configures USB Global interrupt
  * @param  None
  * @retval None
  */
void USB_OTG_BSP_EnableInterrupt(USB_OTG_CORE_HANDLE *pdev)
{

  NVIC_InitTypeDef NVIC_InitStructure;
  /* Enable USB Interrupt */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

  NVIC_InitStructure.NVIC_IRQChannel = OTG_FS_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  /* Enable the Overcurrent Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = HOST_OVRCURR_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init(&NVIC_InitStructure);
}

/**
  * @brief  BSP_Drive_VBUS
  *         Drives the Vbus signal through IO
  * @param  state : VBUS states
  * @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  USB_OTG_BSP_ConfigVBUS
  *         Configures the IO for the Vbus and OverCurrent
  * @param  None
  * @retval None
  */
void  USB_OTG_BSP_ConfigVBUS(USB_OTG_CORE_HANDLE *pdev)
{
  GPIO_InitTypeDef GPIO_InitStructure;


  RCC_AHB1PeriphClockCmd(HOST_POWERSW_PORT_RCC, ENABLE);


  /* Configure Power Switch Vbus Pin */
  GPIO_InitStructure.GPIO_Pin = HOST_POWERSW_VBUS;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;  
  
  GPIO_Init(HOST_POWERSW_PORT, &GPIO_InitStructure);

  /* By Default, DISABLE is needed on output of the Power Switch */
  GPIO_SetBits(HOST_POWERSW_PORT, HOST_POWERSW_VBUS);

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

  /* Set the Vector Table base address at 0x08000000 */
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x00);

  /* Configure the Priority Group to 2 bits */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

  /* Enable the TIM2 gloabal Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init(&NVIC_InitStructure);

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
#endif
}

/**
  * @brief  USB_OTG_BSP_uDelay
  *         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  USB_OTG_BSP_mDelay
  *          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  USB_OTG_BSP_TimerIRQ
  *         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  BSP_Delay
  *         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  BSP_SetTime
  *         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 2011 STMicroelectronics *****END OF FILE****/