mbed library sources

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Fork of mbed-src by mbed official

Revision:
87:085cde657901
Child:
106:ced8cbb51063
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_NUCLEO_F401RE/stm32f4xx_hal_hcd.c	Sat Feb 08 19:45:06 2014 +0000
@@ -0,0 +1,1177 @@
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_hal_hcd.c
+  * @author  MCD Application Team
+  * @version V1.0.0RC2
+  * @date    04-February-2014
+  * @brief   HCD HAL module driver.
+  *          This file provides firmware functions to manage the following 
+  *          functionalities of the USB Peripheral Controller:
+  *           + Initialization and de-initialization functions
+  *           + IO operation functions
+  *           + Peripheral Control functions 
+  *           + Peripheral State functions
+  *         
+  @verbatim
+  ==============================================================================
+                    ##### How to use this driver #####
+  ==============================================================================
+  [..]
+    (#)Declare a HCD_HandleTypeDef handle structure, for example:
+       HCD_HandleTypeDef  hhcd;
+        
+    (#)Fill parameters of Init structure in HCD handle
+  
+    (#)Call HAL_HCD_Init() API to initialize the HCD peripheral (Core, Host core, ...) 
+
+    (#)Initialize the HCD low level resources through the HAL_HCD_MspInit() API:
+        (##) Enable the HCD/USB Low Level interface clock using 
+             (+++) __OTGFS-OTG_CLK_ENABLE()/__OTGHS-OTG_CLK_ENABLE();
+             (+++) __OTGHSULPI_CLK_ENABLE(); (For High Speed Mode)
+           
+        (##) Initialize the related GPIO clocks
+        (##) Configure HCD pin-out
+        (##) Configure HCD NVIC interrupt
+    
+    (#)Associate the Upper USB Host stack to the HAL HCD Driver:
+        (##) hhcd.pData = phost;
+
+    (#)Enable HCD transmission and reception:
+        (##) HAL_HCD_Start();
+
+  @endverbatim
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions 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 its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 "stm32f4xx_hal.h"
+/** @addtogroup STM32F4xx_HAL_Driver
+  * @{
+  */
+
+/** @defgroup HCD 
+  * @brief HCD HAL module driver
+  * @{
+  */
+
+#ifdef HAL_HCD_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+static void HAL_HCD_HC_IN_IRQHandler   (HCD_HandleTypeDef *hhcd, uint8_t chnum);
+static void HAL_HCD_HC_OUT_IRQHandler  (HCD_HandleTypeDef *hhcd, uint8_t chnum); 
+static void HAL_HCD_RXQLVL_IRQHandler  (HCD_HandleTypeDef *hhcd);
+static void HAL_HCD_Port_IRQHandler     (HCD_HandleTypeDef *hhcd);
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup HCD_Private_Functions
+  * @{
+  */
+
+/** @defgroup HCD_Group1 Initialization and de-initialization functions 
+ *  @brief    Initialization and Configuration functions 
+ *
+@verbatim    
+ ===============================================================================
+          ##### Initialization and de-initialization functions #####
+ ===============================================================================
+    [..]  This section provides functions allowing to:
+ 
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Initialize the host driver
+  * @param  hhcd : HCD handle
+  * @retval HAL state
+  */
+HAL_StatusTypeDef HAL_HCD_Init(HCD_HandleTypeDef *hhcd)
+{ 
+  /* Check the HCD handle allocation */
+  if(hhcd == NULL)
+  {
+    return HAL_ERROR;
+  }
+  
+  /* Check the parameters */
+  assert_param(IS_HCD_ALL_INSTANCE(hhcd->Instance));
+
+  hhcd->State = HCD_BUSY;
+  
+  /* Init the low level hardware : GPIO, CLOCK, NVIC... */
+  HAL_HCD_MspInit(hhcd);
+
+  /* Disable the Interrupts */
+ __HAL_HCD_DISABLE(hhcd);
+ 
+ /*Init the Core (common init.) */
+ USB_CoreInit(hhcd->Instance, hhcd->Init);
+ 
+ /* Force Host Mode*/
+ USB_SetCurrentMode(hhcd->Instance , USB_OTG_HOST_MODE);
+ 
+ /* Init Host */
+ USB_HostInit(hhcd->Instance, hhcd->Init);
+ 
+ hhcd->State= HCD_READY;
+ 
+ return HAL_OK;
+}
+
+/**
+  * @brief  Initialize a host channel
+  * @param  hhcd : HCD handle
+  * @param  ch_num : Channel number
+  *         This parameter can be a value from 1 to 15
+  * @param  epnum : Endpoint number
+  *          This parameter can be a value from 1 to 15
+  * @param  dev_address : Current device address
+  *          This parameter can be a value from 0 to 255
+  * @param  speed : Current device speed
+  *          This parameter can be one of the these values:
+  *            @arg HCD_SPEED_HIGH: High speed mode
+  *            @arg HCD_SPEED_FULL: Full speed mode
+  *            @arg HCD_SPEED_LOW: Low speed mode
+  * @param  ep_type : Endpoint Type
+  *          This parameter can be one of the these values:
+  *            @arg EP_TYPE_CTRL: Control type
+  *            @arg EP_TYPE_ISOC: Isochrounous type
+  *            @arg EP_TYPE_BULK: Bulk type
+  *            @arg EP_TYPE_INTR: Interrupt type
+  * @param  mps : Max Packet Size
+  *          This parameter can be a value from 0 to32K
+  * @retval HAL state
+  */
+HAL_StatusTypeDef HAL_HCD_HC_Init(HCD_HandleTypeDef *hhcd,  
+                                  uint8_t ch_num,
+                                  uint8_t epnum,
+                                  uint8_t dev_address,
+                                  uint8_t speed,
+                                  uint8_t ep_type,
+                                  uint16_t mps)
+{
+  HAL_StatusTypeDef status = HAL_OK;
+  
+  __HAL_LOCK(hhcd); 
+  
+  hhcd->hc[ch_num].dev_addr = dev_address;
+  hhcd->hc[ch_num].max_packet = mps;
+  hhcd->hc[ch_num].ch_num = ch_num;
+  hhcd->hc[ch_num].ep_type = ep_type;
+  hhcd->hc[ch_num].ep_num = epnum & 0x7F;
+  hhcd->hc[ch_num].ep_is_in = ((epnum & 0x80) == 0x80);
+  hhcd->hc[ch_num].speed = speed;
+
+  status =  USB_HC_Init(hhcd->Instance, 
+                        ch_num,
+                        epnum,
+                        dev_address,
+                        speed,
+                        ep_type,
+                        mps);
+  __HAL_UNLOCK(hhcd); 
+  
+  return status;
+}
+
+
+
+/**
+  * @brief  Halt a host channel
+  * @param  hhcd : HCD handle
+  * @param  ch_num : Channel number
+  *         This parameter can be a value from 1 to 15
+  * @retval HAL state
+  */
+HAL_StatusTypeDef HAL_HCD_HC_Halt(HCD_HandleTypeDef *hhcd,  
+                                  uint8_t ch_num)
+{
+  HAL_StatusTypeDef status = HAL_OK;
+  
+  __HAL_LOCK(hhcd);   
+  USB_HC_Halt(hhcd->Instance, ch_num);   
+  __HAL_UNLOCK(hhcd);
+  
+  return status;
+}
+/**
+  * @brief  DeInitialize the host driver
+  * @param  hhcd : HCD handle
+  * @retval HAL state
+  */
+HAL_StatusTypeDef HAL_HCD_DeInit(HCD_HandleTypeDef *hhcd)
+{
+  /* Check the HCD handle allocation */
+  if(hhcd == NULL)
+  {
+    return HAL_ERROR;
+  }
+  
+  hhcd->State = HCD_BUSY;
+  
+  /* DeInit the low level hardware */
+  HAL_HCD_MspDeInit(hhcd);
+  
+   __HAL_HCD_DISABLE(hhcd);
+  
+  hhcd->State = HCD_READY; 
+  
+  return HAL_OK;
+}
+
+/**
+  * @brief  Initializes the HCD MSP.
+  * @param  hhcd: HCD handle
+  * @retval None
+  */
+__weak void  HAL_HCD_MspInit(HCD_HandleTypeDef *hhcd)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_PCD_MspInit could be implenetd in the user file
+   */
+}
+
+/**
+  * @brief  DeInitializes HCD MSP.
+  * @param  hhcd: HCD handle
+  * @retval None
+  */
+__weak void  HAL_HCD_MspDeInit(HCD_HandleTypeDef *hhhcd)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_PCD_MspDeInit could be implenetd in the user file
+   */
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup HCD_Group2 IO operation functions 
+  *  @brief   HCD IO operation functions
+  *
+@verbatim
+ ===============================================================================
+                      ##### IO operation functions #####
+ ===============================================================================
+    This subsection provides a set of functions allowing to manage the USB Host Data 
+    Transfer
+       
+@endverbatim
+  * @{
+  */
+  
+/**                                
+  * @brief  Submit a new URB for processing 
+  * @param  hhcd : HCD handle
+  * @param  ch_num : Channel number
+  *         This parameter can be a value from 1 to 15
+  * @param  direction : Channel number
+  *          This parameter can be one of the these values:
+  *           0 : Output 
+  *           1 : Input
+  * @param  ep_type : Endpoint Type
+  *          This parameter can be one of the these values:
+  *            @arg EP_TYPE_CTRL: Control type
+  *            @arg EP_TYPE_ISOC: Isochrounous type
+  *            @arg EP_TYPE_BULK: Bulk type
+  *            @arg EP_TYPE_INTR: Interrupt type
+  * @param  token : Endpoint Type
+  *          This parameter can be one of the these values:
+  *            @arg 0: HC_PID_SETUP
+  *            @arg 1: HC_PID_DATA1
+  * @param  pbuff : pointer to URB data
+  * @param  length : Length of URB data
+  * @param  do_ping : activate do ping protocol (for high speed only)
+  *          This parameter can be one of the these values:
+  *           0 : do ping inactive 
+  *           1 : do ping active 
+  * @retval HAL state
+  */
+HAL_StatusTypeDef HAL_HCD_HC_SubmitRequest(HCD_HandleTypeDef *hhcd,
+                                            uint8_t ch_num, 
+                                            uint8_t direction ,
+                                            uint8_t ep_type,  
+                                            uint8_t token, 
+                                            uint8_t* pbuff, 
+                                            uint16_t length,
+                                            uint8_t do_ping) 
+{
+  hhcd->hc[ch_num].ep_is_in = direction;
+  hhcd->hc[ch_num].ep_type  = ep_type; 
+  
+  if(token == 0)
+  {
+    hhcd->hc[ch_num].data_pid = HC_PID_SETUP;
+  }
+  else
+  {
+    hhcd->hc[ch_num].data_pid = HC_PID_DATA1;
+  }
+  
+  /* Manage Data Toggle */
+  switch(ep_type)
+  {
+  case EP_TYPE_CTRL:
+    if((token == 1) && (direction == 0)) /*send data */
+    {
+      if ( length == 0 )
+      { /* For Status OUT stage, Length==0, Status Out PID = 1 */
+        hhcd->hc[ch_num].toggle_out = 1;
+      }
+      
+      /* Set the Data Toggle bit as per the Flag */
+      if ( hhcd->hc[ch_num].toggle_out == 0)
+      { /* Put the PID 0 */
+        hhcd->hc[ch_num].data_pid = HC_PID_DATA0;    
+      }
+      else
+      { /* Put the PID 1 */
+        hhcd->hc[ch_num].data_pid = HC_PID_DATA1 ;
+      }
+      if(hhcd->hc[ch_num].urb_state  != URB_NOTREADY)
+      {
+        hhcd->hc[ch_num].do_ping = do_ping;
+      }
+    }
+    break;
+  
+  case EP_TYPE_BULK:
+    if(direction == 0)
+    {
+      /* Set the Data Toggle bit as per the Flag */
+      if ( hhcd->hc[ch_num].toggle_out == 0)
+      { /* Put the PID 0 */
+        hhcd->hc[ch_num].data_pid = HC_PID_DATA0;    
+      }
+      else
+      { /* Put the PID 1 */
+        hhcd->hc[ch_num].data_pid = HC_PID_DATA1 ;
+      }
+      if(hhcd->hc[ch_num].urb_state  != URB_NOTREADY)
+      {
+        hhcd->hc[ch_num].do_ping = do_ping;
+      }
+    }
+    else
+    {
+      if( hhcd->hc[ch_num].toggle_in == 0)
+      {
+        hhcd->hc[ch_num].data_pid = HC_PID_DATA0;
+      }
+      else
+      {
+        hhcd->hc[ch_num].data_pid = HC_PID_DATA1;
+      }
+    }
+    
+    break;
+  case EP_TYPE_INTR:
+    if(direction == 0)
+    {
+      /* Set the Data Toggle bit as per the Flag */
+      if ( hhcd->hc[ch_num].toggle_out == 0)
+      { /* Put the PID 0 */
+        hhcd->hc[ch_num].data_pid = HC_PID_DATA0;    
+      }
+      else
+      { /* Put the PID 1 */
+        hhcd->hc[ch_num].data_pid = HC_PID_DATA1 ;
+      }
+    }
+    else
+    {
+      if( hhcd->hc[ch_num].toggle_in == 0)
+      {
+        hhcd->hc[ch_num].data_pid = HC_PID_DATA0;
+      }
+      else
+      {
+        hhcd->hc[ch_num].data_pid = HC_PID_DATA1;
+      }
+    }
+    break;
+    
+  case EP_TYPE_ISOC: 
+    hhcd->hc[ch_num].data_pid = HC_PID_DATA0;
+    break;
+      
+  }
+  
+  hhcd->hc[ch_num].xfer_buff = pbuff;
+  hhcd->hc[ch_num].xfer_len  = length;
+  hhcd->hc[ch_num].urb_state =   URB_IDLE;  
+  hhcd->hc[ch_num].xfer_count = 0 ;
+  hhcd->hc[ch_num].ch_num = ch_num;
+  hhcd->hc[ch_num].state = HC_IDLE;
+  
+  return USB_HC_StartXfer(hhcd->Instance, &(hhcd->hc[ch_num]), hhcd->Init.dma_enable);
+}
+
+/**
+  * @brief  This function handles HCD interrupt request.
+  * @param  hhcd: HCD handle
+  * @retval none
+  */
+void HAL_HCD_IRQHandler(HCD_HandleTypeDef *hhcd)
+{
+  USB_OTG_GlobalTypeDef *USBx = hhcd->Instance;
+  uint32_t i = 0 , interrupt = 0;
+  
+  /* ensure that we are in device mode */
+  if (USB_GetMode(hhcd->Instance) == USB_OTG_MODE_HOST)
+  {
+    /* avoid spurious interrupt */
+    if(__HAL_HCD_IS_INVALID_INTERRUPT(hhcd)) 
+    {
+      return;
+    }
+    
+    if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_PXFR_INCOMPISOOUT))
+    {
+     /* incorrect mode, acknowledge the interrupt */
+      __HAL_HCD_CLEAR_FLAG(hhcd, USB_OTG_GINTSTS_PXFR_INCOMPISOOUT);
+    }
+    
+    if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_IISOIXFR))
+    {
+     /* incorrect mode, acknowledge the interrupt */
+      __HAL_HCD_CLEAR_FLAG(hhcd, USB_OTG_GINTSTS_IISOIXFR);
+    }
+
+    if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_PTXFE))
+    {
+     /* incorrect mode, acknowledge the interrupt */
+      __HAL_HCD_CLEAR_FLAG(hhcd, USB_OTG_GINTSTS_PTXFE);
+    }   
+    
+    if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_MMIS))
+    {
+     /* incorrect mode, acknowledge the interrupt */
+      __HAL_HCD_CLEAR_FLAG(hhcd, USB_OTG_GINTSTS_MMIS);
+    }     
+    
+    /* Handle Host Disconnect Interrupts */
+    if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_DISCINT))
+    {
+      
+      /* Cleanup HPRT */
+      USBx_HPRT0 &= ~(USB_OTG_HPRT_PENA | USB_OTG_HPRT_PCDET |\
+        USB_OTG_HPRT_PENCHNG | USB_OTG_HPRT_POCCHNG );
+         
+      /* Handle Host Port Interrupts */
+      HAL_HCD_Disconnect_Callback(hhcd);
+      __HAL_HCD_CLEAR_FLAG(hhcd, USB_OTG_GINTSTS_DISCINT);
+    }
+    
+    /* Handle Host Port Interrupts */
+    if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_HPRTINT))
+    {
+      HAL_HCD_Port_IRQHandler (hhcd);
+    }
+    
+    /* Handle Host SOF Interrupts */
+    if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_SOF))
+    {
+      HAL_HCD_SOF_Callback(hhcd);
+      __HAL_HCD_CLEAR_FLAG(hhcd, USB_OTG_GINTSTS_SOF);
+    }
+          
+    /* Handle Host channel Interrupts */
+    if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_HCINT))
+    {
+      
+      interrupt = USB_HC_ReadInterrupt(hhcd->Instance);
+      for (i = 0; i < hhcd->Init.Host_channels ; i++)
+      {
+        if (interrupt & (1 << i))
+        {
+          if ((USBx_HC(i)->HCCHAR) &  USB_OTG_HCCHAR_EPDIR)
+          {
+            HAL_HCD_HC_IN_IRQHandler (hhcd, i);
+          }
+          else
+          {
+            HAL_HCD_HC_OUT_IRQHandler (hhcd, i);
+          }
+        }
+      }
+      __HAL_HCD_CLEAR_FLAG(hhcd, USB_OTG_GINTSTS_HCINT);
+    } 
+    
+        /* Handle Rx Queue Level Interrupts */
+    if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_RXFLVL))
+    {
+      USB_MASK_INTERRUPT(hhcd->Instance, USB_OTG_GINTSTS_RXFLVL);
+      
+      HAL_HCD_RXQLVL_IRQHandler (hhcd);
+      
+      USB_UNMASK_INTERRUPT(hhcd->Instance, USB_OTG_GINTSTS_RXFLVL);
+    }
+    
+  }
+}
+
+/**
+  * @brief  SOF callback.
+  * @param  hhcd: HCD handle
+  * @retval None
+  */
+__weak void HAL_HCD_SOF_Callback(HCD_HandleTypeDef *hhcd)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_HCD_SOF_Callback could be implenetd in the user file
+   */
+}
+
+/**
+  * @brief Connexion Event callback.
+  * @param  hhcd: HCD handle
+  * @retval None
+  */
+__weak void HAL_HCD_Connect_Callback(HCD_HandleTypeDef *hhcd)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_HCD_Connect_Callback could be implenetd in the user file
+   */
+}
+
+/**
+  * @brief  Disonnexion Event callback.
+  * @param  hhcd: HCD handle
+  * @retval None
+  */
+__weak void HAL_HCD_Disconnect_Callback(HCD_HandleTypeDef *hhcd)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_HCD_Disconnect_Callback could be implenetd in the user file
+   */
+} 
+
+/**
+  * @brief  Notify URB state change callback.
+  * @param  hhcd: HCD handle
+  * @param  chnum : Channel number
+  *         This parameter can be a value from 1 to 15
+  * @param  urb_state:
+  *          This parameter can be one of the these values:
+  *            @arg URB_IDLE
+  *            @arg URB_DONE
+  *            @arg URB_NOTREADY
+  *            @arg URB_NYET 
+  *            @arg URB_ERROR  
+  *            @arg URB_STALL    
+  * @retval None
+  */
+__weak void HAL_HCD_HC_NotifyURBChange_Callback(HCD_HandleTypeDef *hhcd, uint8_t chnum, HCD_URBStateTypeDef urb_state)
+{
+  /* NOTE : This function Should not be modified, when the callback is needed,
+            the HAL_HCD_HC_NotifyURBChange_Callback could be implenetd in the user file
+   */
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup HCD_Group3 Peripheral Control functions 
+ *  @brief   management functions 
+ *
+@verbatim   
+ ===============================================================================
+                      ##### Peripheral Control functions #####
+ ===============================================================================  
+    [..]
+    This subsection provides a set of functions allowing to control the HCD data 
+    transfers.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Start the host driver
+  * @param  hhcd : HCD handle
+  * @retval HAL state
+  */
+HAL_StatusTypeDef HAL_HCD_Start(HCD_HandleTypeDef *hhcd)
+{ 
+  __HAL_LOCK(hhcd); 
+  __HAL_HCD_ENABLE(hhcd);
+  USB_DriveVbus(hhcd->Instance, 1);  
+  __HAL_UNLOCK(hhcd); 
+  return HAL_OK;
+}
+
+/**
+  * @brief  Stop the host driver
+  * @param  hhcd : HCD handle
+  * @retval HAL state
+  */
+
+HAL_StatusTypeDef HAL_HCD_Stop(HCD_HandleTypeDef *hhcd)
+{ 
+  __HAL_LOCK(hhcd); 
+  USB_StopHost(hhcd->Instance);
+  USB_DriveVbus(hhcd->Instance, 0);
+  __HAL_UNLOCK(hhcd); 
+  return HAL_OK;
+}
+
+/**
+  * @brief  Reset the host port
+  * @param  hhcd : HCD handle
+  * @retval HAL state
+  */
+HAL_StatusTypeDef HAL_HCD_ResetPort(HCD_HandleTypeDef *hhcd)
+{
+  return (USB_ResetPort(hhcd->Instance));
+}
+
+/**
+  * @}
+  */
+
+/** @defgroup HCD_Group4 Peripheral State functions 
+ *  @brief   Peripheral State functions 
+ *
+@verbatim   
+ ===============================================================================
+                      ##### Peripheral State functions #####
+ ===============================================================================  
+    [..]
+    This subsection permit to get in run-time the status of the peripheral 
+    and the data flow.
+
+@endverbatim
+  * @{
+  */
+
+/**
+  * @brief  Return the HCD state
+  * @param  hhcd : HCD handle
+  * @retval HAL state
+  */
+HCD_StateTypeDef HAL_HCD_GetState(HCD_HandleTypeDef *hhcd)
+{
+  return hhcd->State;
+}
+
+/**
+  * @brief  Return  URB state for a channel
+  * @param  hhcd : HCD handle
+  * @param  chnum : Channel number
+  *         This parameter can be a value from 1 to 15
+  * @retval URB state
+  *          This parameter can be one of the these values:
+  *            @arg URB_IDLE
+  *            @arg URB_DONE
+  *            @arg URB_NOTREADY
+  *            @arg URB_NYET 
+  *            @arg URB_ERROR  
+  *            @arg URB_STALL      
+  */
+HCD_URBStateTypeDef HAL_HCD_HC_GetURBState(HCD_HandleTypeDef *hhcd, uint8_t chnum)
+{
+  return hhcd->hc[chnum].urb_state;
+}
+
+
+/**
+  * @brief  Return the last host transfer size
+  * @param  hhcd : HCD handle
+  * @param  chnum : Channel number
+  *         This parameter can be a value from 1 to 15
+  * @retval last transfer size in byte
+  */
+uint32_t HAL_HCD_HC_GetXferCount(HCD_HandleTypeDef *hhcd, uint8_t chnum)
+{
+  return hhcd->hc[chnum].xfer_count; 
+}
+  
+/**
+  * @brief  Return the Host Channel state
+  * @param  hhcd : HCD handle
+  * @param  chnum : Channel number
+  *         This parameter can be a value from 1 to 15
+  * @retval Host channel state
+  *          This parameter can be one of the these values:
+  *            @arg HC_IDLE
+  *            @arg HC_XFRC
+  *            @arg HC_HALTED
+  *            @arg HC_NYET 
+  *            @arg HC_NAK  
+  *            @arg HC_STALL 
+  *            @arg HC_XACTERR  
+  *            @arg HC_BBLERR  
+  *            @arg HC_DATATGLERR    
+  */
+HCD_HCStateTypeDef  HAL_HCD_HC_GetState(HCD_HandleTypeDef *hhcd, uint8_t chnum)
+{
+  return hhcd->hc[chnum].state;
+}
+
+/**
+  * @brief  Return the current Host frame number
+  * @param  hhcd : HCD handle
+  * @retval current Host frame number
+  */
+uint32_t HAL_HCD_GetCurrentFrame(HCD_HandleTypeDef *hhcd)
+{
+  return (USB_GetCurrentFrame(hhcd->Instance));
+}
+
+/**
+  * @brief  Return the Host enumeration speed
+  * @param  hhcd : HCD handle
+  * @retval Enumeration speed
+  */
+uint32_t HAL_HCD_GetCurrentSpeed(HCD_HandleTypeDef *hhcd)
+{
+  return (USB_GetHostSpeed(hhcd->Instance));
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @brief  This function handles Host Channel IN interrupt requests.
+  * @param  hhcd: HCD handle
+  * @param  chnum : Channel number
+  *         This parameter can be a value from 1 to 15
+  * @retval none
+  */
+static void HAL_HCD_HC_IN_IRQHandler   (HCD_HandleTypeDef *hhcd, uint8_t chnum)
+{
+  USB_OTG_GlobalTypeDef *USBx = hhcd->Instance;
+    
+  if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_AHBERR)
+  {
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_AHBERR);
+    __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
+  }  
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_ACK)
+  {
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_ACK);
+  }
+  
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_STALL)  
+  {
+    __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
+    hhcd->hc[chnum].state = HC_STALL;
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_NAK);
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_STALL);    
+    USB_HC_Halt(hhcd->Instance, chnum);    
+  }
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_DTERR)
+  {
+    __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
+    USB_HC_Halt(hhcd->Instance, chnum);  
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_NAK);    
+    hhcd->hc[chnum].state = HC_DATATGLERR;
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_DTERR);
+  }    
+  
+  if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_FRMOR)
+  {
+    __HAL_HCD_UNMASK_HALT_HC_INT(chnum); 
+    USB_HC_Halt(hhcd->Instance, chnum);  
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_FRMOR);
+  }
+  
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_XFRC)
+  {
+    
+    if (hhcd->Init.dma_enable)
+    {
+      hhcd->hc[chnum].xfer_count = hhcd->hc[chnum].xfer_len - \
+                               (USBx_HC(chnum)->HCTSIZ & USB_OTG_HCTSIZ_XFRSIZ);
+    }
+    
+    hhcd->hc[chnum].state = HC_XFRC;
+    hhcd->hc[chnum].ErrCnt = 0;
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_XFRC);
+    
+    
+    if ((hhcd->hc[chnum].ep_type == EP_TYPE_CTRL)||
+        (hhcd->hc[chnum].ep_type == EP_TYPE_BULK))
+    {
+      __HAL_HCD_UNMASK_HALT_HC_INT(chnum); 
+      USB_HC_Halt(hhcd->Instance, chnum); 
+      __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_NAK);
+      
+    }
+    else if(hhcd->hc[chnum].ep_type == EP_TYPE_INTR)
+    {
+      USBx_HC(chnum)->HCCHAR |= USB_OTG_HCCHAR_ODDFRM;
+      hhcd->hc[chnum].urb_state = URB_DONE; 
+      HAL_HCD_HC_NotifyURBChange_Callback(hhcd, chnum, hhcd->hc[chnum].urb_state);
+    }
+    hhcd->hc[chnum].toggle_in ^= 1;
+    
+  }
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_CHH)
+  {
+    __HAL_HCD_MASK_HALT_HC_INT(chnum); 
+    
+    if(hhcd->hc[chnum].state == HC_XFRC)
+    {
+      hhcd->hc[chnum].urb_state  = URB_DONE;      
+    }
+    
+    else if (hhcd->hc[chnum].state == HC_STALL) 
+    {
+      hhcd->hc[chnum].urb_state  = URB_STALL;
+    }   
+    
+    else if((hhcd->hc[chnum].state == HC_XACTERR) ||
+            (hhcd->hc[chnum].state == HC_DATATGLERR))
+    {
+      if(hhcd->hc[chnum].ErrCnt++ > 3)
+      {      
+        hhcd->hc[chnum].ErrCnt = 0;
+        hhcd->hc[chnum].urb_state = URB_ERROR;
+      }
+      else
+      {
+        hhcd->hc[chnum].urb_state = URB_NOTREADY;
+      }
+      
+      /* re-activate the channel  */
+      USBx_HC(chnum)->HCCHAR &= ~USB_OTG_HCCHAR_CHDIS;         
+      USBx_HC(chnum)->HCCHAR |= USB_OTG_HCCHAR_CHENA;      
+    }
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_CHH);
+    HAL_HCD_HC_NotifyURBChange_Callback(hhcd, chnum, hhcd->hc[chnum].urb_state);
+  }  
+  
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_TXERR)
+  {
+    __HAL_HCD_UNMASK_HALT_HC_INT(chnum); 
+     hhcd->hc[chnum].ErrCnt++;
+     hhcd->hc[chnum].state = HC_XACTERR;
+     USB_HC_Halt(hhcd->Instance, chnum);     
+     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_TXERR);
+  }
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_NAK)
+  {  
+    if(hhcd->hc[chnum].ep_type == EP_TYPE_INTR)
+    {
+      __HAL_HCD_UNMASK_HALT_HC_INT(chnum); 
+      USB_HC_Halt(hhcd->Instance, chnum);  
+    }
+    else if  ((hhcd->hc[chnum].ep_type == EP_TYPE_CTRL)||
+              (hhcd->hc[chnum].ep_type == EP_TYPE_BULK))
+    {
+      /* re-activate the channel  */
+      USBx_HC(chnum)->HCCHAR &= ~USB_OTG_HCCHAR_CHDIS;         
+      USBx_HC(chnum)->HCCHAR |= USB_OTG_HCCHAR_CHENA;
+   
+    }
+    hhcd->hc[chnum].state = HC_NAK;
+     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_NAK);
+  }
+}
+
+/**
+  * @brief  This function handles Host Channel OUT interrupt requests.
+  * @param  hhcd: HCD handle
+  * @param  chnum : Channel number
+  *         This parameter can be a value from 1 to 15
+  * @retval none
+  */
+static void HAL_HCD_HC_OUT_IRQHandler  (HCD_HandleTypeDef *hhcd, uint8_t chnum)
+{
+  USB_OTG_GlobalTypeDef *USBx = hhcd->Instance;
+  
+  if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_AHBERR)
+  {
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_AHBERR);
+    __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
+  }  
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_ACK)
+  {
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_ACK);
+    
+    if( hhcd->hc[chnum].do_ping == 1)
+    {
+      hhcd->hc[chnum].state = HC_NYET;     
+      __HAL_HCD_UNMASK_HALT_HC_INT(chnum); 
+      USB_HC_Halt(hhcd->Instance, chnum); 
+      hhcd->hc[chnum].urb_state  = URB_NOTREADY;
+    }
+  }
+  
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_NYET)
+  {
+    hhcd->hc[chnum].state = HC_NYET;
+    hhcd->hc[chnum].ErrCnt= 0;    
+    __HAL_HCD_UNMASK_HALT_HC_INT(chnum); 
+    USB_HC_Halt(hhcd->Instance, chnum);      
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_NYET);
+    
+  }  
+  
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_FRMOR)
+  {
+    __HAL_HCD_UNMASK_HALT_HC_INT(chnum); 
+    USB_HC_Halt(hhcd->Instance, chnum);  
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_FRMOR);
+  }
+  
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_XFRC)
+  {
+      hhcd->hc[chnum].ErrCnt = 0;  
+    __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
+    USB_HC_Halt(hhcd->Instance, chnum);   
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_XFRC);
+    hhcd->hc[chnum].state = HC_XFRC;
+
+  }  
+
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_STALL)  
+  {
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_STALL);  
+    __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
+    USB_HC_Halt(hhcd->Instance, chnum);   
+    hhcd->hc[chnum].state = HC_STALL;    
+  }
+
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_NAK)
+  {  
+    hhcd->hc[chnum].ErrCnt = 0;  
+    __HAL_HCD_UNMASK_HALT_HC_INT(chnum); 
+    USB_HC_Halt(hhcd->Instance, chnum);   
+    hhcd->hc[chnum].state = HC_NAK;
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_NAK);
+  }
+
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_TXERR)
+  {
+    __HAL_HCD_UNMASK_HALT_HC_INT(chnum); 
+    USB_HC_Halt(hhcd->Instance, chnum);      
+    hhcd->hc[chnum].state = HC_XACTERR;  
+     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_TXERR);
+  }
+  
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_DTERR)
+  {
+    __HAL_HCD_UNMASK_HALT_HC_INT(chnum); 
+    USB_HC_Halt(hhcd->Instance, chnum);      
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_NAK);
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_DTERR);    
+    hhcd->hc[chnum].state = HC_DATATGLERR;
+  }
+  
+  
+  else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_CHH)
+  {
+    __HAL_HCD_MASK_HALT_HC_INT(chnum); 
+    
+    if(hhcd->hc[chnum].state == HC_XFRC)
+    {
+      hhcd->hc[chnum].urb_state  = URB_DONE;
+      if (hhcd->hc[chnum].ep_type == EP_TYPE_BULK)
+      {
+        hhcd->hc[chnum].toggle_out ^= 1; 
+      }      
+    }
+    else if (hhcd->hc[chnum].state == HC_NAK) 
+    {
+      hhcd->hc[chnum].urb_state  = URB_NOTREADY;
+    }  
+    
+    else if (hhcd->hc[chnum].state == HC_NYET) 
+    {
+      hhcd->hc[chnum].urb_state  = URB_NOTREADY;
+      hhcd->hc[chnum].do_ping = 0;
+    }   
+    
+    else if (hhcd->hc[chnum].state == HC_STALL) 
+    {
+      hhcd->hc[chnum].urb_state  = URB_STALL;
+    } 
+    
+    else if((hhcd->hc[chnum].state == HC_XACTERR) ||
+            (hhcd->hc[chnum].state == HC_DATATGLERR))
+    {
+      if(hhcd->hc[chnum].ErrCnt++ > 3)
+      {      
+        hhcd->hc[chnum].ErrCnt = 0;
+        hhcd->hc[chnum].urb_state = URB_ERROR;
+      }
+      else
+      {
+        hhcd->hc[chnum].urb_state = URB_NOTREADY;
+      }
+      
+      /* re-activate the channel  */
+      USBx_HC(chnum)->HCCHAR &= ~USB_OTG_HCCHAR_CHDIS;         
+      USBx_HC(chnum)->HCCHAR |= USB_OTG_HCCHAR_CHENA;      
+    }
+    
+    __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_CHH);
+    HAL_HCD_HC_NotifyURBChange_Callback(hhcd, chnum, hhcd->hc[chnum].urb_state);  
+  }
+} 
+
+/**
+  * @brief  This function handles Rx Queue Level interrupt requests.
+  * @param  hhcd: HCD handle
+  * @retval none
+  */
+static void HAL_HCD_RXQLVL_IRQHandler  (HCD_HandleTypeDef *hhcd)
+{
+  USB_OTG_GlobalTypeDef *USBx = hhcd->Instance;  
+  uint8_t                       channelnum =0;  
+  uint32_t                      pktsts;
+  uint32_t                      pktcnt; 
+  uint32_t                      temp = 0;
+  
+  temp = hhcd->Instance->GRXSTSP ;
+  channelnum = temp &  USB_OTG_GRXSTSP_EPNUM;  
+  pktsts = (temp &  USB_OTG_GRXSTSP_PKTSTS) >> 17;
+  pktcnt = (temp &  USB_OTG_GRXSTSP_BCNT) >> 4;
+    
+  switch (pktsts)
+  {
+  case GRXSTS_PKTSTS_IN:
+    /* Read the data into the host buffer. */
+    if ((pktcnt > 0) && (hhcd->hc[channelnum].xfer_buff != (void  *)0))
+    {  
+      
+      USB_ReadPacket(hhcd->Instance, hhcd->hc[channelnum].xfer_buff, pktcnt);
+     
+      /*manage multiple Xfer */
+      hhcd->hc[channelnum].xfer_buff += pktcnt;           
+      hhcd->hc[channelnum].xfer_count  += pktcnt;
+        
+      if((USBx_HC(channelnum)->HCTSIZ & USB_OTG_HCTSIZ_PKTCNT) > 0)
+      {
+        /* re-activate the channel when more packets are expected */
+        USBx_HC(channelnum)->HCCHAR &= ~USB_OTG_HCCHAR_CHDIS; 
+        USBx_HC(channelnum)->HCCHAR |= USB_OTG_HCCHAR_CHENA;
+        hhcd->hc[channelnum].toggle_in ^= 1;
+      }
+    }
+    break;
+
+  case GRXSTS_PKTSTS_DATA_TOGGLE_ERR:
+    break;
+  case GRXSTS_PKTSTS_IN_XFER_COMP:
+  case GRXSTS_PKTSTS_CH_HALTED:
+  default:
+    break;
+  }
+}
+
+/**
+  * @brief  This function handles Host Port interrupt requests.
+  * @param  hhcd: HCD handle
+  * @retval none
+  */
+static void HAL_HCD_Port_IRQHandler  (HCD_HandleTypeDef *hhcd)
+{
+  USB_OTG_GlobalTypeDef *USBx = hhcd->Instance;  
+  __IO uint32_t hprt0, hprt0_dup;
+  
+  /* Handle Host Port Interrupts */
+  hprt0 = USBx_HPRT0;
+  hprt0_dup = USBx_HPRT0;
+  
+  hprt0_dup &= ~(USB_OTG_HPRT_PENA | USB_OTG_HPRT_PCDET |\
+                 USB_OTG_HPRT_PENCHNG | USB_OTG_HPRT_POCCHNG );
+  
+  /* Check wether Port Connect Detected */
+  if((hprt0 & USB_OTG_HPRT_PCDET) == USB_OTG_HPRT_PCDET)
+  {
+    if((hprt0 & USB_OTG_HPRT_PCSTS) == USB_OTG_HPRT_PCSTS)
+    {
+      HAL_HCD_Connect_Callback(hhcd);
+    }
+    hprt0_dup  |= USB_OTG_HPRT_PCDET;
+    
+  }
+  
+  /* Check whether Port Enable Changed */
+  if((hprt0 & USB_OTG_HPRT_PENCHNG) == USB_OTG_HPRT_PENCHNG)
+  {
+    hprt0_dup |= USB_OTG_HPRT_PENCHNG;
+    
+    if((hprt0 & USB_OTG_HPRT_PENA) == USB_OTG_HPRT_PENA)
+    {    
+      if(hhcd->Init.phy_itface  == USB_OTG_EMBEDDED_PHY)
+      {
+        if ((hprt0 & USB_OTG_HPRT_PSPD) == (HPRT0_PRTSPD_LOW_SPEED << 17))
+        {
+          USB_InitFSLSPClkSel(hhcd->Instance ,HCFG_6_MHZ );
+        }
+        else if ((hprt0 & USB_OTG_HPRT_PSPD) == (HPRT0_PRTSPD_FULL_SPEED << 17))
+        {
+          USB_InitFSLSPClkSel(hhcd->Instance ,HCFG_48_MHZ );
+        }
+      }
+      else
+      {
+        USB_InitFSLSPClkSel(USBx , HCFG_30_60_MHZ); 
+      }
+      HAL_HCD_Connect_Callback(hhcd);
+    }
+  }
+  
+  /* Check For an overcurrent */
+  if((hprt0 & USB_OTG_HPRT_POCCHNG) == USB_OTG_HPRT_POCCHNG)
+  {
+    hprt0_dup |= USB_OTG_HPRT_POCCHNG;
+  }
+
+  /* Clear Port Interrupts */
+  USBx_HPRT0 = hprt0_dup;
+}
+
+/**
+  * @}
+  */
+
+#endif /* HAL_HCD_MODULE_ENABLED */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/