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  1. /**
  2.   ******************************************************************************
  3.   * @file    stm32f1xx_hal_hcd.c
  4.   * @author  MCD Application Team
  5.   * @version V1.0.1
  6.   * @date    31-July-2015
  7.   * @brief   HCD HAL module driver.
  8.   *          This file provides firmware functions to manage the following
  9.   *          functionalities of the USB Peripheral Controller:
  10.   *           + Initialization and de-initialization functions
  11.   *           + IO operation functions
  12.   *           + Peripheral Control functions
  13.   *           + Peripheral State functions
  14.   *
  15.   @verbatim
  16.   ==============================================================================
  17.                     ##### How to use this driver #####
  18.   ==============================================================================
  19.   [..]
  20.     (#)Declare a HCD_HandleTypeDef handle structure, for example:
  21.        HCD_HandleTypeDef  hhcd;
  22.        
  23.     (#)Fill parameters of Init structure in HCD handle
  24.  
  25.     (#)Call HAL_HCD_Init() API to initialize the HCD peripheral (Core, Host core, ...)
  26.  
  27.     (#)Initialize the HCD low level resources through the HAL_HCD_MspInit() API:
  28.         (##) Enable the HCD/USB Low Level interface clock using the following macro
  29.              (+++) __HAL_RCC_USB_OTG_FS_CLK_ENABLE()
  30.  
  31.         (##) Initialize the related GPIO clocks
  32.         (##) Configure HCD pin-out
  33.         (##) Configure HCD NVIC interrupt
  34.  
  35.     (#)Associate the Upper USB Host stack to the HAL HCD Driver:
  36.         (##) hhcd.pData = phost;
  37.  
  38.     (#)Enable HCD transmission and reception:
  39.         (##) HAL_HCD_Start();
  40.  
  41.   @endverbatim
  42.   ******************************************************************************
  43.   * @attention
  44.   *
  45.   * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
  46.   *
  47.   * Redistribution and use in source and binary forms, with or without modification,
  48.   * are permitted provided that the following conditions are met:
  49.   *   1. Redistributions of source code must retain the above copyright notice,
  50.   *      this list of conditions and the following disclaimer.
  51.   *   2. Redistributions in binary form must reproduce the above copyright notice,
  52.   *      this list of conditions and the following disclaimer in the documentation
  53.   *      and/or other materials provided with the distribution.
  54.   *   3. Neither the name of STMicroelectronics nor the names of its contributors
  55.   *      may be used to endorse or promote products derived from this software
  56.   *      without specific prior written permission.
  57.   *
  58.   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  59.   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  60.   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  61.   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  62.   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  63.   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  64.   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  65.   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  66.   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  67.   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  68.   *
  69.   ******************************************************************************
  70.   */
  71.  
  72. /* Includes ------------------------------------------------------------------*/
  73. #include "stm32f1xx_hal.h"
  74. /** @addtogroup STM32F1xx_HAL_Driver
  75.   * @{
  76.   */
  77.  
  78.  
  79. #ifdef HAL_HCD_MODULE_ENABLED
  80.  
  81. #if defined(STM32F105xC) || defined(STM32F107xC)
  82.  
  83. /** @defgroup HCD HCD
  84.   * @brief HCD HAL module driver
  85.   * @{
  86.   */
  87.  
  88. /* Private types -------------------------------------------------------------*/
  89. /* Private variables ---------------------------------------------------------*/
  90. /* Private constants ---------------------------------------------------------*/
  91. /* Private macros ------------------------------------------------------------*/
  92. /* Private function ----------------------------------------------------------*/
  93. /** @defgroup HCD_Private_Functions HCD Private Functions
  94.   * @{
  95.   */
  96. static void HCD_HC_IN_IRQHandler(HCD_HandleTypeDef *hhcd, uint8_t chnum);
  97. static void HCD_HC_OUT_IRQHandler(HCD_HandleTypeDef *hhcd, uint8_t chnum);
  98. static void HCD_RXQLVL_IRQHandler(HCD_HandleTypeDef *hhcd);
  99. static void HCD_Port_IRQHandler(HCD_HandleTypeDef *hhcd);
  100. /**
  101.   * @}
  102.   */
  103.  
  104. /* Exported functions --------------------------------------------------------*/
  105. /** @defgroup HCD_Exported_Functions HCD Exported Functions
  106.   * @{
  107.   */
  108.  
  109. /** @defgroup HCD_Exported_Functions_Group1 Initialization and de-initialization functions
  110.  *  @brief    Initialization and Configuration functions
  111.  *
  112. @verbatim
  113.  ===============================================================================
  114.           ##### Initialization and de-initialization functions #####
  115.  ===============================================================================
  116.     [..]  This section provides functions allowing to:
  117.  
  118. @endverbatim
  119.   * @{
  120.   */
  121.  
  122. /**
  123.   * @brief  Initialize the host driver
  124.   * @param  hhcd: HCD handle
  125.   * @retval HAL status
  126.   */
  127. HAL_StatusTypeDef HAL_HCD_Init(HCD_HandleTypeDef *hhcd)
  128. {
  129.   /* Check the HCD handle allocation */
  130.   if(hhcd == NULL)
  131.   {
  132.     return HAL_ERROR;
  133.   }
  134.  
  135.   /* Check the parameters */
  136.   assert_param(IS_HCD_ALL_INSTANCE(hhcd->Instance));
  137.  
  138.   if(hhcd->State == HAL_HCD_STATE_RESET)
  139.   {  
  140.     /* Allocate lock resource and initialize it */
  141.     hhcd->Lock = HAL_UNLOCKED;
  142.  
  143.     /* Init the low level hardware : GPIO, CLOCK, NVIC... */
  144.     HAL_HCD_MspInit(hhcd);
  145.   }
  146.  
  147.   hhcd->State = HAL_HCD_STATE_BUSY;
  148.  
  149.   /* Disable the Interrupts */
  150.   __HAL_HCD_DISABLE(hhcd);
  151.  
  152.   /*Init the Core (common init.) */
  153.   USB_CoreInit(hhcd->Instance, hhcd->Init);
  154.  
  155.   /* Force Host Mode*/
  156.   USB_SetCurrentMode(hhcd->Instance , USB_HOST_MODE);
  157.  
  158.   /* Init Host */
  159.   USB_HostInit(hhcd->Instance, hhcd->Init);
  160.  
  161.   hhcd->State= HAL_HCD_STATE_READY;
  162.  
  163.   return HAL_OK;
  164. }
  165.  
  166. /**
  167.   * @brief  Initialize a host channel
  168.   * @param  hhcd: HCD handle
  169.   * @param  ch_num: Channel number.
  170.   *         This parameter can be a value from 1 to 15
  171.   * @param  epnum: Endpoint number.
  172.   *          This parameter can be a value from 1 to 15
  173.   * @param  dev_address : Current device address
  174.   *          This parameter can be a value from 0 to 255
  175.   * @param  speed: Current device speed.
  176.   *          This parameter can be one of these values:
  177.   *            HCD_SPEED_FULL: Full speed mode,
  178.   *            HCD_SPEED_LOW: Low speed mode
  179.   * @param  ep_type: Endpoint Type.
  180.   *          This parameter can be one of these values:
  181.   *            EP_TYPE_CTRL: Control type,
  182.   *            EP_TYPE_ISOC: Isochronous type,
  183.   *            EP_TYPE_BULK: Bulk type,
  184.   *            EP_TYPE_INTR: Interrupt type
  185.   * @param  mps: Max Packet Size.
  186.   *          This parameter can be a value from 0 to32K
  187.   * @retval HAL status
  188.   */
  189. HAL_StatusTypeDef HAL_HCD_HC_Init(HCD_HandleTypeDef *hhcd,
  190.                                   uint8_t ch_num,
  191.                                   uint8_t epnum,
  192.                                   uint8_t dev_address,
  193.                                   uint8_t speed,
  194.                                   uint8_t ep_type,
  195.                                   uint16_t mps)
  196. {
  197.   HAL_StatusTypeDef status = HAL_OK;
  198.  
  199.   __HAL_LOCK(hhcd);
  200.  
  201.   hhcd->hc[ch_num].dev_addr = dev_address;
  202.   hhcd->hc[ch_num].max_packet = mps;
  203.   hhcd->hc[ch_num].ch_num = ch_num;
  204.   hhcd->hc[ch_num].ep_type = ep_type;
  205.   hhcd->hc[ch_num].ep_num = epnum & 0x7F;
  206.   hhcd->hc[ch_num].ep_is_in = ((epnum & 0x80) == 0x80);
  207.   hhcd->hc[ch_num].speed = speed;
  208.  
  209.   status =  USB_HC_Init(hhcd->Instance,
  210.                         ch_num,
  211.                         epnum,
  212.                         dev_address,
  213.                         speed,
  214.                         ep_type,
  215.                         mps);
  216.   __HAL_UNLOCK(hhcd);
  217.  
  218.   return status;
  219. }
  220.  
  221. /**
  222.   * @brief  Halt a host channel
  223.   * @param  hhcd: HCD handle
  224.   * @param  ch_num: Channel number.
  225.   *         This parameter can be a value from 1 to 15
  226.   * @retval HAL status
  227.   */
  228. HAL_StatusTypeDef HAL_HCD_HC_Halt(HCD_HandleTypeDef *hhcd,
  229.                                   uint8_t ch_num)
  230. {
  231.   __HAL_LOCK(hhcd);
  232.   USB_HC_Halt(hhcd->Instance, ch_num);
  233.   __HAL_UNLOCK(hhcd);
  234.  
  235.   return HAL_OK;
  236. }
  237.  
  238. /**
  239.   * @brief  DeInitialize the host driver
  240.   * @param  hhcd: HCD handle
  241.   * @retval HAL status
  242.   */
  243. HAL_StatusTypeDef HAL_HCD_DeInit(HCD_HandleTypeDef *hhcd)
  244. {
  245.   /* Check the HCD handle allocation */
  246.   if(hhcd == NULL)
  247.   {
  248.     return HAL_ERROR;
  249.   }
  250.  
  251.   hhcd->State = HAL_HCD_STATE_BUSY;
  252.  
  253.   /* DeInit the low level hardware */
  254.   HAL_HCD_MspDeInit(hhcd);
  255.  
  256.    __HAL_HCD_DISABLE(hhcd);
  257.  
  258.   hhcd->State = HAL_HCD_STATE_RESET;
  259.  
  260.   return HAL_OK;
  261. }
  262.  
  263. /**
  264.   * @brief  Initializes the HCD MSP.
  265.   * @param  hhcd: HCD handle
  266.   * @retval None
  267.   */
  268. __weak void  HAL_HCD_MspInit(HCD_HandleTypeDef *hhcd)
  269. {
  270.   /* NOTE : This function Should not be modified, when the callback is needed,
  271.             the HAL_HCD_MspInit could be implemented in the user file
  272.    */
  273. }
  274.  
  275. /**
  276.   * @brief  DeInitializes HCD MSP.
  277.   * @param  hhcd: HCD handle
  278.   * @retval None
  279.   */
  280. __weak void  HAL_HCD_MspDeInit(HCD_HandleTypeDef *hhcd)
  281. {
  282.   /* NOTE : This function Should not be modified, when the callback is needed,
  283.             the HAL_HCD_MspDeInit could be implemented in the user file
  284.    */
  285. }
  286.  
  287. /**
  288.   * @}
  289.   */
  290.  
  291. /** @defgroup HCD_Exported_Functions_Group2 IO operation functions
  292.   *  @brief   HCD IO operation functions
  293.   *
  294. @verbatim
  295.  ===============================================================================
  296.                       ##### IO operation functions #####
  297.  ===============================================================================
  298.     This subsection provides a set of functions allowing to manage the USB Host Data
  299.     Transfer
  300.        
  301. @endverbatim
  302.   * @{
  303.   */
  304.  
  305. /**                                
  306.   * @brief  Submit a new URB for processing
  307.   * @param  hhcd: HCD handle
  308.   * @param  ch_num: Channel number.
  309.   *         This parameter can be a value from 1 to 15
  310.   * @param  direction: Channel number.
  311.   *          This parameter can be one of these values:
  312.   *           0 : Output / 1 : Input
  313.   * @param  ep_type: Endpoint Type.
  314.   *          This parameter can be one of these values:
  315.   *            EP_TYPE_CTRL: Control type/
  316.   *            EP_TYPE_ISOC: Isochronous type/
  317.   *            EP_TYPE_BULK: Bulk type/
  318.   *            EP_TYPE_INTR: Interrupt type/
  319.   * @param  token: Endpoint Type.
  320.   *          This parameter can be one of these values:
  321.   *            0: HC_PID_SETUP / 1: HC_PID_DATA1
  322.   * @param  pbuff: pointer to URB data
  323.   * @param  length: Length of URB data
  324.   * @param  do_ping: activate do ping protocol (for high speed only).
  325.   *          This parameter can be one of these values:
  326.   *           0 : do ping inactive / 1 : do ping active
  327.   * @retval HAL status
  328.   */
  329. HAL_StatusTypeDef HAL_HCD_HC_SubmitRequest(HCD_HandleTypeDef *hhcd,
  330.                                            uint8_t ch_num,
  331.                                            uint8_t direction ,
  332.                                            uint8_t ep_type,  
  333.                                            uint8_t token,
  334.                                            uint8_t* pbuff,
  335.                                            uint16_t length,
  336.                                            uint8_t do_ping)
  337. {
  338.   hhcd->hc[ch_num].ep_is_in = direction;
  339.   hhcd->hc[ch_num].ep_type  = ep_type;
  340.  
  341.   if(token == 0)
  342.   {
  343.     hhcd->hc[ch_num].data_pid = HC_PID_SETUP;
  344.   }
  345.   else
  346.   {
  347.     hhcd->hc[ch_num].data_pid = HC_PID_DATA1;
  348.   }
  349.  
  350.   /* Manage Data Toggle */
  351.   switch(ep_type)
  352.   {
  353.   case EP_TYPE_CTRL:
  354.     if((token == 1) && (direction == 0)) /*send data */
  355.     {
  356.       if ( length == 0 )
  357.       { /* For Status OUT stage, Length==0, Status Out PID = 1 */
  358.         hhcd->hc[ch_num].toggle_out = 1;
  359.       }
  360.      
  361.       /* Set the Data Toggle bit as per the Flag */
  362.       if ( hhcd->hc[ch_num].toggle_out == 0)
  363.       { /* Put the PID 0 */
  364.         hhcd->hc[ch_num].data_pid = HC_PID_DATA0;
  365.       }
  366.       else
  367.       { /* Put the PID 1 */
  368.         hhcd->hc[ch_num].data_pid = HC_PID_DATA1 ;
  369.       }
  370.       if(hhcd->hc[ch_num].urb_state  != URB_NOTREADY)
  371.       {
  372.         hhcd->hc[ch_num].do_ping = do_ping;
  373.       }
  374.     }
  375.     break;
  376.  
  377.   case EP_TYPE_BULK:
  378.     if(direction == 0)
  379.     {
  380.       /* Set the Data Toggle bit as per the Flag */
  381.       if ( hhcd->hc[ch_num].toggle_out == 0)
  382.       { /* Put the PID 0 */
  383.         hhcd->hc[ch_num].data_pid = HC_PID_DATA0;
  384.       }
  385.       else
  386.       { /* Put the PID 1 */
  387.         hhcd->hc[ch_num].data_pid = HC_PID_DATA1 ;
  388.       }
  389.       if(hhcd->hc[ch_num].urb_state  != URB_NOTREADY)
  390.       {
  391.         hhcd->hc[ch_num].do_ping = do_ping;
  392.       }
  393.     }
  394.     else
  395.     {
  396.       if( hhcd->hc[ch_num].toggle_in == 0)
  397.       {
  398.         hhcd->hc[ch_num].data_pid = HC_PID_DATA0;
  399.       }
  400.       else
  401.       {
  402.         hhcd->hc[ch_num].data_pid = HC_PID_DATA1;
  403.       }
  404.     }
  405.     break;
  406.  
  407.   case EP_TYPE_INTR:
  408.     if(direction == 0)
  409.     {
  410.       /* Set the Data Toggle bit as per the Flag */
  411.       if ( hhcd->hc[ch_num].toggle_out == 0)
  412.       { /* Put the PID 0 */
  413.         hhcd->hc[ch_num].data_pid = HC_PID_DATA0;
  414.       }
  415.       else
  416.       { /* Put the PID 1 */
  417.         hhcd->hc[ch_num].data_pid = HC_PID_DATA1 ;
  418.       }
  419.     }
  420.     else
  421.     {
  422.       if( hhcd->hc[ch_num].toggle_in == 0)
  423.       {
  424.         hhcd->hc[ch_num].data_pid = HC_PID_DATA0;
  425.       }
  426.       else
  427.       {
  428.         hhcd->hc[ch_num].data_pid = HC_PID_DATA1;
  429.       }
  430.     }
  431.     break;
  432.  
  433.   case EP_TYPE_ISOC:
  434.     hhcd->hc[ch_num].data_pid = HC_PID_DATA0;
  435.     break;
  436.   }
  437.  
  438.   hhcd->hc[ch_num].xfer_buff = pbuff;
  439.   hhcd->hc[ch_num].xfer_len  = length;
  440.   hhcd->hc[ch_num].urb_state =   URB_IDLE;
  441.   hhcd->hc[ch_num].xfer_count = 0 ;
  442.   hhcd->hc[ch_num].ch_num = ch_num;
  443.   hhcd->hc[ch_num].state = HC_IDLE;
  444.  
  445.   return USB_HC_StartXfer(hhcd->Instance, &(hhcd->hc[ch_num]));
  446. }
  447.  
  448. /**
  449.   * @brief  This function handles HCD interrupt request.
  450.   * @param  hhcd: HCD handle
  451.   * @retval None
  452.   */
  453. void HAL_HCD_IRQHandler(HCD_HandleTypeDef *hhcd)
  454. {
  455.   USB_OTG_GlobalTypeDef *USBx = hhcd->Instance;
  456.  
  457.   uint32_t index = 0 , interrupt = 0;
  458.  
  459.   /* ensure that we are in device mode */
  460.   if (USB_GetMode(hhcd->Instance) == USB_OTG_MODE_HOST)
  461.   {
  462.     /* avoid spurious interrupt */
  463.     if(__HAL_HCD_IS_INVALID_INTERRUPT(hhcd))
  464.     {
  465.       return;
  466.     }
  467.    
  468.     if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_PXFR_INCOMPISOOUT))
  469.     {
  470.      /* incorrect mode, acknowledge the interrupt */
  471.       __HAL_HCD_CLEAR_FLAG(hhcd, USB_OTG_GINTSTS_PXFR_INCOMPISOOUT);
  472.     }
  473.    
  474.     if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_IISOIXFR))
  475.     {
  476.      /* incorrect mode, acknowledge the interrupt */
  477.       __HAL_HCD_CLEAR_FLAG(hhcd, USB_OTG_GINTSTS_IISOIXFR);
  478.     }
  479.    
  480.     if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_PTXFE))
  481.     {
  482.      /* incorrect mode, acknowledge the interrupt */
  483.       __HAL_HCD_CLEAR_FLAG(hhcd, USB_OTG_GINTSTS_PTXFE);
  484.     }
  485.    
  486.     if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_MMIS))
  487.     {
  488.      /* incorrect mode, acknowledge the interrupt */
  489.       __HAL_HCD_CLEAR_FLAG(hhcd, USB_OTG_GINTSTS_MMIS);
  490.     }
  491.    
  492.     /* Handle Host Disconnect Interrupts */
  493.     if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_DISCINT))
  494.     {
  495.    
  496.       /* Cleanup HPRT */
  497.       USBx_HPRT0 &= ~(USB_OTG_HPRT_PENA | USB_OTG_HPRT_PCDET |\
  498.         USB_OTG_HPRT_PENCHNG | USB_OTG_HPRT_POCCHNG );
  499.      
  500.       /* Handle Host Port Interrupts */
  501.       HAL_HCD_Disconnect_Callback(hhcd);
  502.        USB_InitFSLSPClkSel(hhcd->Instance ,HCFG_48_MHZ );
  503.       __HAL_HCD_CLEAR_FLAG(hhcd, USB_OTG_GINTSTS_DISCINT);
  504.     }
  505.    
  506.     /* Handle Host Port Interrupts */
  507.     if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_HPRTINT))
  508.     {
  509.       HCD_Port_IRQHandler (hhcd);
  510.     }
  511.    
  512.     /* Handle Host SOF Interrupts */
  513.     if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_SOF))
  514.     {
  515.       HAL_HCD_SOF_Callback(hhcd);
  516.       __HAL_HCD_CLEAR_FLAG(hhcd, USB_OTG_GINTSTS_SOF);
  517.     }
  518.    
  519.     /* Handle Host channel Interrupts */
  520.     if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_HCINT))
  521.     {
  522.       interrupt = USB_HC_ReadInterrupt(hhcd->Instance);
  523.       for (index = 0; index < hhcd->Init.Host_channels ; index++)
  524.       {
  525.         if (interrupt & (1 << index))
  526.         {
  527.           if ((USBx_HC(index)->HCCHAR) &  USB_OTG_HCCHAR_EPDIR)
  528.           {
  529.             HCD_HC_IN_IRQHandler (hhcd, index);
  530.           }
  531.           else
  532.           {
  533.             HCD_HC_OUT_IRQHandler (hhcd, index);
  534.           }
  535.         }
  536.       }
  537.       __HAL_HCD_CLEAR_FLAG(hhcd, USB_OTG_GINTSTS_HCINT);
  538.     }
  539.    
  540.     /* Handle Rx Queue Level Interrupts */
  541.     if(__HAL_HCD_GET_FLAG(hhcd, USB_OTG_GINTSTS_RXFLVL))
  542.     {
  543.       USB_MASK_INTERRUPT(hhcd->Instance, USB_OTG_GINTSTS_RXFLVL);
  544.      
  545.       HCD_RXQLVL_IRQHandler (hhcd);
  546.      
  547.       USB_UNMASK_INTERRUPT(hhcd->Instance, USB_OTG_GINTSTS_RXFLVL);
  548.     }
  549.    
  550.   }
  551. }
  552.  
  553. /**
  554.   * @brief  SOF callback.
  555.   * @param  hhcd: HCD handle
  556.   * @retval None
  557.   */
  558. __weak void HAL_HCD_SOF_Callback(HCD_HandleTypeDef *hhcd)
  559. {
  560.   /* NOTE : This function Should not be modified, when the callback is needed,
  561.             the HAL_HCD_SOF_Callback could be implemented in the user file
  562.    */
  563. }
  564.  
  565. /**
  566.   * @brief Connexion Event callback.
  567.   * @param  hhcd: HCD handle
  568.   * @retval None
  569.   */
  570. __weak void HAL_HCD_Connect_Callback(HCD_HandleTypeDef *hhcd)
  571. {
  572.   /* NOTE : This function Should not be modified, when the callback is needed,
  573.             the HAL_HCD_Connect_Callback could be implemented in the user file
  574.    */
  575. }
  576.  
  577. /**
  578.   * @brief  Disonnexion Event callback.
  579.   * @param  hhcd: HCD handle
  580.   * @retval None
  581.   */
  582. __weak void HAL_HCD_Disconnect_Callback(HCD_HandleTypeDef *hhcd)
  583. {
  584.   /* NOTE : This function Should not be modified, when the callback is needed,
  585.             the HAL_HCD_Disconnect_Callback could be implemented in the user file
  586.    */
  587. }
  588.  
  589. /**
  590.   * @brief  Notify URB state change callback.
  591.   * @param  hhcd: HCD handle
  592.   * @param  chnum: Channel number.
  593.   *         This parameter can be a value from 1 to 15
  594.   * @param  urb_state:
  595.   *          This parameter can be one of these values:
  596.   *            URB_IDLE/
  597.   *            URB_DONE/
  598.   *            URB_NOTREADY/
  599.   *            URB_NYET/
  600.   *            URB_ERROR/  
  601.   *            URB_STALL/    
  602.   * @retval None
  603.   */
  604. __weak void HAL_HCD_HC_NotifyURBChange_Callback(HCD_HandleTypeDef *hhcd, uint8_t chnum, HCD_URBStateTypeDef urb_state)
  605. {
  606.   /* NOTE : This function Should not be modified, when the callback is needed,
  607.             the HAL_HCD_HC_NotifyURBChange_Callback could be implemented in the user file
  608.    */
  609. }
  610.  
  611. /**
  612.   * @}
  613.   */
  614.  
  615. /** @defgroup HCD_Exported_Functions_Group3 Peripheral Control functions
  616.  *  @brief   management functions
  617.  *
  618. @verbatim
  619.  ===============================================================================
  620.                       ##### Peripheral Control functions #####
  621.  ===============================================================================
  622.     [..]
  623.     This subsection provides a set of functions allowing to control the HCD data
  624.     transfers.
  625.  
  626. @endverbatim
  627.   * @{
  628.   */
  629.  
  630. /**
  631.   * @brief  Start the host driver
  632.   * @param  hhcd: HCD handle
  633.   * @retval HAL status
  634.   */
  635. HAL_StatusTypeDef HAL_HCD_Start(HCD_HandleTypeDef *hhcd)
  636. {
  637.   __HAL_LOCK(hhcd);
  638.   __HAL_HCD_ENABLE(hhcd);
  639.   USB_DriveVbus(hhcd->Instance, 1);
  640.   __HAL_UNLOCK(hhcd);
  641.   return HAL_OK;
  642. }
  643.  
  644. /**
  645.   * @brief  Stop the host driver
  646.   * @param  hhcd: HCD handle
  647.   * @retval HAL status
  648.   */
  649.  
  650. HAL_StatusTypeDef HAL_HCD_Stop(HCD_HandleTypeDef *hhcd)
  651. {
  652.   __HAL_LOCK(hhcd);
  653.   USB_StopHost(hhcd->Instance);
  654.   __HAL_UNLOCK(hhcd);
  655.   return HAL_OK;
  656. }
  657.  
  658. /**
  659.   * @brief  Reset the host port
  660.   * @param  hhcd: HCD handle
  661.   * @retval HAL status
  662.   */
  663. HAL_StatusTypeDef HAL_HCD_ResetPort(HCD_HandleTypeDef *hhcd)
  664. {
  665.   return (USB_ResetPort(hhcd->Instance));
  666. }
  667.  
  668. /**
  669.   * @}
  670.   */
  671.  
  672. /** @defgroup HCD_Exported_Functions_Group4 Peripheral State functions
  673.  *  @brief   Peripheral State functions
  674.  *
  675. @verbatim
  676.  ===============================================================================
  677.                       ##### Peripheral State functions #####
  678.  ===============================================================================
  679.     [..]
  680.     This subsection permits to get in run-time the status of the peripheral
  681.     and the data flow.
  682.  
  683. @endverbatim
  684.   * @{
  685.   */
  686.  
  687. /**
  688.   * @brief  Return the HCD state
  689.   * @param  hhcd: HCD handle
  690.   * @retval HAL state
  691.   */
  692. HCD_StateTypeDef HAL_HCD_GetState(HCD_HandleTypeDef *hhcd)
  693. {
  694.   return hhcd->State;
  695. }
  696.  
  697. /**
  698.   * @brief  Return  URB state for a channel
  699.   * @param  hhcd: HCD handle
  700.   * @param  chnum: Channel number.
  701.   *         This parameter can be a value from 1 to 15
  702.   * @retval URB state.
  703.   *          This parameter can be one of these values:
  704.   *            URB_IDLE/
  705.   *            URB_DONE/
  706.   *            URB_NOTREADY/
  707.   *            URB_NYET/
  708.   *            URB_ERROR/
  709.   *            URB_STALL/
  710.   */
  711. HCD_URBStateTypeDef HAL_HCD_HC_GetURBState(HCD_HandleTypeDef *hhcd, uint8_t chnum)
  712. {
  713.   return hhcd->hc[chnum].urb_state;
  714. }
  715.  
  716.  
  717. /**
  718.   * @brief  Return the last host transfer size
  719.   * @param  hhcd: HCD handle
  720.   * @param  chnum: Channel number.
  721.   *         This parameter can be a value from 1 to 15
  722.   * @retval last transfer size in byte
  723.   */
  724. uint32_t HAL_HCD_HC_GetXferCount(HCD_HandleTypeDef *hhcd, uint8_t chnum)
  725. {
  726.   return hhcd->hc[chnum].xfer_count;
  727. }
  728.  
  729. /**
  730.   * @brief  Return the Host Channel state
  731.   * @param  hhcd: HCD handle
  732.   * @param  chnum: Channel number.
  733.   *         This parameter can be a value from 1 to 15
  734.   * @retval Host channel state
  735.   *          This parameter can be one of the these values:
  736.   *            HC_IDLE/
  737.   *            HC_XFRC/
  738.   *            HC_HALTED/
  739.   *            HC_NYET/
  740.   *            HC_NAK/
  741.   *            HC_STALL/
  742.   *            HC_XACTERR/
  743.   *            HC_BBLERR/
  744.   *            HC_DATATGLERR/
  745.   */
  746. HCD_HCStateTypeDef  HAL_HCD_HC_GetState(HCD_HandleTypeDef *hhcd, uint8_t chnum)
  747. {
  748.   return hhcd->hc[chnum].state;
  749. }
  750.  
  751. /**
  752.   * @brief  Return the current Host frame number
  753.   * @param  hhcd: HCD handle
  754.   * @retval Current Host frame number
  755.   */
  756. uint32_t HAL_HCD_GetCurrentFrame(HCD_HandleTypeDef *hhcd)
  757. {
  758.   return (USB_GetCurrentFrame(hhcd->Instance));
  759. }
  760.  
  761. /**
  762.   * @brief  Return the Host enumeration speed
  763.   * @param  hhcd: HCD handle
  764.   * @retval Enumeration speed
  765.   */
  766. uint32_t HAL_HCD_GetCurrentSpeed(HCD_HandleTypeDef *hhcd)
  767. {
  768.   return (USB_GetHostSpeed(hhcd->Instance));
  769. }
  770.  
  771. /**
  772.   * @}
  773.   */
  774. /**
  775.   * @}
  776.   */
  777.  
  778. /** @addtogroup HCD_Private_Functions
  779.   * @{
  780.   */
  781. /**
  782.   * @brief  This function handles Host Channel IN interrupt requests.
  783.   * @param  hhcd: HCD handle
  784.   * @param  chnum: Channel number.
  785.   *         This parameter can be a value from 1 to 15
  786.   * @retval none
  787.   */
  788. static void HCD_HC_IN_IRQHandler (HCD_HandleTypeDef *hhcd, uint8_t chnum)
  789. {
  790.   USB_OTG_GlobalTypeDef *USBx = hhcd->Instance;
  791.   uint32_t tmpreg = 0;
  792.  
  793.   if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_AHBERR)
  794.   {
  795.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_AHBERR);
  796.     __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  797.   }  
  798.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_ACK)
  799.   {
  800.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_ACK);
  801.   }
  802.  
  803.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_STALL)
  804.   {
  805.     __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  806.     hhcd->hc[chnum].state = HC_STALL;
  807.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_NAK);
  808.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_STALL);
  809.     USB_HC_Halt(hhcd->Instance, chnum);
  810.   }
  811.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_DTERR)
  812.   {
  813.     __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  814.     USB_HC_Halt(hhcd->Instance, chnum);
  815.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_NAK);
  816.     hhcd->hc[chnum].state = HC_DATATGLERR;
  817.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_DTERR);
  818.   }
  819.  
  820.   if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_FRMOR)
  821.   {
  822.     __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  823.     USB_HC_Halt(hhcd->Instance, chnum);
  824.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_FRMOR);
  825.   }
  826.  
  827.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_XFRC)
  828.   {
  829.     hhcd->hc[chnum].state = HC_XFRC;
  830.     hhcd->hc[chnum].ErrCnt = 0;
  831.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_XFRC);
  832.    
  833.     if ((hhcd->hc[chnum].ep_type == EP_TYPE_CTRL)||
  834.         (hhcd->hc[chnum].ep_type == EP_TYPE_BULK))
  835.     {
  836.       __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  837.       USB_HC_Halt(hhcd->Instance, chnum);
  838.       __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_NAK);
  839.      
  840.     }
  841.     else if(hhcd->hc[chnum].ep_type == EP_TYPE_INTR)
  842.     {
  843.       USBx_HC(chnum)->HCCHAR |= USB_OTG_HCCHAR_ODDFRM;
  844.       hhcd->hc[chnum].urb_state = URB_DONE;
  845.       HAL_HCD_HC_NotifyURBChange_Callback(hhcd, chnum, hhcd->hc[chnum].urb_state);
  846.     }
  847.     hhcd->hc[chnum].toggle_in ^= 1;
  848.    
  849.   }
  850.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_CHH)
  851.   {
  852.     __HAL_HCD_MASK_HALT_HC_INT(chnum);
  853.    
  854.     if(hhcd->hc[chnum].state == HC_XFRC)
  855.     {
  856.       hhcd->hc[chnum].urb_state  = URB_DONE;
  857.     }
  858.     else if (hhcd->hc[chnum].state == HC_STALL)
  859.     {
  860.       hhcd->hc[chnum].urb_state  = URB_STALL;
  861.     }
  862.     else if((hhcd->hc[chnum].state == HC_XACTERR) ||
  863.             (hhcd->hc[chnum].state == HC_DATATGLERR))
  864.     {
  865.       if(hhcd->hc[chnum].ErrCnt++ > 3)
  866.       {
  867.         hhcd->hc[chnum].ErrCnt = 0;
  868.         hhcd->hc[chnum].urb_state = URB_ERROR;
  869.       }
  870.       else
  871.       {
  872.         hhcd->hc[chnum].urb_state = URB_NOTREADY;
  873.       }
  874.      
  875.       /* re-activate the channel  */
  876.       tmpreg = USBx_HC(chnum)->HCCHAR;
  877.       tmpreg &= ~USB_OTG_HCCHAR_CHDIS;
  878.       tmpreg |= USB_OTG_HCCHAR_CHENA;
  879.       USBx_HC(chnum)->HCCHAR = tmpreg;
  880.     }
  881.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_CHH);
  882.     HAL_HCD_HC_NotifyURBChange_Callback(hhcd, chnum, hhcd->hc[chnum].urb_state);
  883.   }
  884.  
  885.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_TXERR)
  886.   {
  887.     __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  888.      hhcd->hc[chnum].ErrCnt++;
  889.      hhcd->hc[chnum].state = HC_XACTERR;
  890.      USB_HC_Halt(hhcd->Instance, chnum);
  891.      __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_TXERR);
  892.   }
  893.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_NAK)
  894.   {
  895.     if(hhcd->hc[chnum].ep_type == EP_TYPE_INTR)
  896.     {
  897.       __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  898.       USB_HC_Halt(hhcd->Instance, chnum);
  899.     }
  900.     else if  ((hhcd->hc[chnum].ep_type == EP_TYPE_CTRL)||
  901.               (hhcd->hc[chnum].ep_type == EP_TYPE_BULK))
  902.     {
  903.       /* re-activate the channel  */
  904.       tmpreg = USBx_HC(chnum)->HCCHAR;
  905.       tmpreg &= ~USB_OTG_HCCHAR_CHDIS;
  906.       tmpreg |= USB_OTG_HCCHAR_CHENA;
  907.       USBx_HC(chnum)->HCCHAR = tmpreg;
  908.     }
  909.     hhcd->hc[chnum].state = HC_NAK;
  910.      __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_NAK);
  911.   }
  912. }
  913.  
  914. /**
  915.   * @brief  This function handles Host Channel OUT interrupt requests.
  916.   * @param  hhcd: HCD handle
  917.   * @param  chnum: Channel number.
  918.   *         This parameter can be a value from 1 to 15
  919.   * @retval none
  920.   */
  921. static void HCD_HC_OUT_IRQHandler (HCD_HandleTypeDef *hhcd, uint8_t chnum)
  922. {
  923.   USB_OTG_GlobalTypeDef *USBx = hhcd->Instance;
  924.   uint32_t tmpreg = 0;
  925.  
  926.   if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_AHBERR)
  927.   {
  928.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_AHBERR);
  929.     __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  930.   }
  931.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_ACK)
  932.   {
  933.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_ACK);
  934.    
  935.     if( hhcd->hc[chnum].do_ping == 1)
  936.     {
  937.       hhcd->hc[chnum].state = HC_NYET;
  938.       __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  939.       USB_HC_Halt(hhcd->Instance, chnum);
  940.       hhcd->hc[chnum].urb_state  = URB_NOTREADY;
  941.     }
  942.   }
  943.  
  944.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_NYET)
  945.   {
  946.     hhcd->hc[chnum].state = HC_NYET;
  947.     hhcd->hc[chnum].ErrCnt= 0;
  948.     __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  949.     USB_HC_Halt(hhcd->Instance, chnum);
  950.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_NYET);
  951.  
  952.   }
  953.  
  954.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_FRMOR)
  955.   {
  956.     __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  957.     USB_HC_Halt(hhcd->Instance, chnum);
  958.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_FRMOR);
  959.   }
  960.  
  961.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_XFRC)
  962.   {
  963.     hhcd->hc[chnum].ErrCnt = 0;
  964.     __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  965.     USB_HC_Halt(hhcd->Instance, chnum);
  966.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_XFRC);
  967.     hhcd->hc[chnum].state = HC_XFRC;
  968.   }
  969.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_STALL)
  970.   {
  971.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_STALL);
  972.     __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  973.     USB_HC_Halt(hhcd->Instance, chnum);
  974.     hhcd->hc[chnum].state = HC_STALL;
  975.   }
  976.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_NAK)
  977.   {
  978.     hhcd->hc[chnum].ErrCnt = 0;
  979.     __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  980.     USB_HC_Halt(hhcd->Instance, chnum);
  981.     hhcd->hc[chnum].state = HC_NAK;
  982.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_NAK);
  983.   }
  984.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_TXERR)
  985.   {
  986.     __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  987.     USB_HC_Halt(hhcd->Instance, chnum);
  988.     hhcd->hc[chnum].state = HC_XACTERR;
  989.      __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_TXERR);
  990.   }
  991.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_DTERR)
  992.   {
  993.     __HAL_HCD_UNMASK_HALT_HC_INT(chnum);
  994.     USB_HC_Halt(hhcd->Instance, chnum);
  995.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_NAK);
  996.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_DTERR);
  997.     hhcd->hc[chnum].state = HC_DATATGLERR;
  998.   }
  999.   else if ((USBx_HC(chnum)->HCINT) &  USB_OTG_HCINT_CHH)
  1000.   {
  1001.     __HAL_HCD_MASK_HALT_HC_INT(chnum);
  1002.    
  1003.     if(hhcd->hc[chnum].state == HC_XFRC)
  1004.     {
  1005.       hhcd->hc[chnum].urb_state  = URB_DONE;
  1006.       if (hhcd->hc[chnum].ep_type == EP_TYPE_BULK)
  1007.       {
  1008.         hhcd->hc[chnum].toggle_out ^= 1;
  1009.       }
  1010.     }
  1011.     else if (hhcd->hc[chnum].state == HC_NAK)
  1012.     {
  1013.       hhcd->hc[chnum].urb_state  = URB_NOTREADY;
  1014.     }
  1015.     else if (hhcd->hc[chnum].state == HC_NYET)
  1016.     {
  1017.       hhcd->hc[chnum].urb_state  = URB_NOTREADY;
  1018.       hhcd->hc[chnum].do_ping = 0;
  1019.     }
  1020.     else if (hhcd->hc[chnum].state == HC_STALL)
  1021.     {
  1022.       hhcd->hc[chnum].urb_state  = URB_STALL;
  1023.     }
  1024.     else if((hhcd->hc[chnum].state == HC_XACTERR) ||
  1025.             (hhcd->hc[chnum].state == HC_DATATGLERR))
  1026.     {
  1027.       if(hhcd->hc[chnum].ErrCnt++ > 3)
  1028.       {
  1029.         hhcd->hc[chnum].ErrCnt = 0;
  1030.         hhcd->hc[chnum].urb_state = URB_ERROR;
  1031.       }
  1032.       else
  1033.       {
  1034.         hhcd->hc[chnum].urb_state = URB_NOTREADY;
  1035.       }
  1036.      
  1037.       /* re-activate the channel  */
  1038.       tmpreg = USBx_HC(chnum)->HCCHAR;
  1039.       tmpreg &= ~USB_OTG_HCCHAR_CHDIS;
  1040.       tmpreg |= USB_OTG_HCCHAR_CHENA;
  1041.       USBx_HC(chnum)->HCCHAR = tmpreg;
  1042.     }
  1043.    
  1044.     __HAL_HCD_CLEAR_HC_INT(chnum, USB_OTG_HCINT_CHH);
  1045.     HAL_HCD_HC_NotifyURBChange_Callback(hhcd, chnum, hhcd->hc[chnum].urb_state);
  1046.   }
  1047. }
  1048.  
  1049. /**
  1050.   * @brief  This function handles Rx Queue Level interrupt requests.
  1051.   * @param  hhcd: HCD handle
  1052.   * @retval none
  1053.   */
  1054. static void HCD_RXQLVL_IRQHandler  (HCD_HandleTypeDef *hhcd)
  1055. {
  1056.   USB_OTG_GlobalTypeDef *USBx = hhcd->Instance;
  1057.   uint8_t                       channelnum =0;
  1058.   uint32_t                      pktsts;
  1059.   uint32_t                      pktcnt;
  1060.   uint32_t                      temp = 0;
  1061.   uint32_t tmpreg = 0;
  1062.  
  1063.   temp = hhcd->Instance->GRXSTSP;
  1064.   channelnum = temp &  USB_OTG_GRXSTSP_EPNUM;
  1065.   pktsts = (temp &  USB_OTG_GRXSTSP_PKTSTS) >> 17;
  1066.   pktcnt = (temp &  USB_OTG_GRXSTSP_BCNT) >> 4;
  1067.  
  1068.   switch (pktsts)
  1069.   {
  1070.   case GRXSTS_PKTSTS_IN:
  1071.     /* Read the data into the host buffer. */
  1072.     if ((pktcnt > 0) && (hhcd->hc[channelnum].xfer_buff != (void  *)0))
  1073.     {
  1074.       USB_ReadPacket(hhcd->Instance, hhcd->hc[channelnum].xfer_buff, pktcnt);
  1075.      
  1076.       /*manage multiple Xfer */
  1077.       hhcd->hc[channelnum].xfer_buff += pktcnt;
  1078.       hhcd->hc[channelnum].xfer_count  += pktcnt;
  1079.      
  1080.       if((USBx_HC(channelnum)->HCTSIZ & USB_OTG_HCTSIZ_PKTCNT) > 0)
  1081.       {
  1082.         /* re-activate the channel when more packets are expected */
  1083.         tmpreg = USBx_HC(channelnum)->HCCHAR;
  1084.         tmpreg &= ~USB_OTG_HCCHAR_CHDIS;
  1085.         tmpreg |= USB_OTG_HCCHAR_CHENA;
  1086.         USBx_HC(channelnum)->HCCHAR = tmpreg;
  1087.         hhcd->hc[channelnum].toggle_in ^= 1;
  1088.       }
  1089.     }
  1090.     break;
  1091.  
  1092.   case GRXSTS_PKTSTS_DATA_TOGGLE_ERR:
  1093.     break;
  1094.  
  1095.   case GRXSTS_PKTSTS_IN_XFER_COMP:
  1096.   case GRXSTS_PKTSTS_CH_HALTED:
  1097.   default:
  1098.     break;
  1099.   }
  1100. }
  1101.  
  1102. /**
  1103.   * @brief  This function handles Host Port interrupt requests.
  1104.   * @param  hhcd: HCD handle
  1105.   * @retval None
  1106.   */
  1107. static void HCD_Port_IRQHandler (HCD_HandleTypeDef *hhcd)
  1108. {
  1109.   USB_OTG_GlobalTypeDef *USBx = hhcd->Instance;  
  1110.   __IO uint32_t hprt0 = 0, hprt0_dup = 0;
  1111.  
  1112.   /* Handle Host Port Interrupts */
  1113.   hprt0 = USBx_HPRT0;
  1114.   hprt0_dup = USBx_HPRT0;
  1115.  
  1116.   hprt0_dup &= ~(USB_OTG_HPRT_PENA | USB_OTG_HPRT_PCDET |\
  1117.                  USB_OTG_HPRT_PENCHNG | USB_OTG_HPRT_POCCHNG );
  1118.  
  1119.   /* Check whether Port Connect Detected */
  1120.   if((hprt0 & USB_OTG_HPRT_PCDET) == USB_OTG_HPRT_PCDET)
  1121.   {
  1122.     if((hprt0 & USB_OTG_HPRT_PCSTS) == USB_OTG_HPRT_PCSTS)
  1123.     {
  1124.       USB_MASK_INTERRUPT(hhcd->Instance, USB_OTG_GINTSTS_DISCINT);
  1125.       HAL_HCD_Connect_Callback(hhcd);
  1126.     }
  1127.     hprt0_dup  |= USB_OTG_HPRT_PCDET;
  1128.   }
  1129.  
  1130.   /* Check whether Port Enable Changed */
  1131.   if((hprt0 & USB_OTG_HPRT_PENCHNG) == USB_OTG_HPRT_PENCHNG)
  1132.   {
  1133.     hprt0_dup |= USB_OTG_HPRT_PENCHNG;
  1134.    
  1135.     if((hprt0 & USB_OTG_HPRT_PENA) == USB_OTG_HPRT_PENA)
  1136.     {
  1137.       if ((hprt0 & USB_OTG_HPRT_PSPD) == (HPRT0_PRTSPD_LOW_SPEED << 17))
  1138.       {
  1139.         USB_InitFSLSPClkSel(hhcd->Instance ,HCFG_6_MHZ );
  1140.       }
  1141.       else
  1142.       {
  1143.         USB_InitFSLSPClkSel(hhcd->Instance ,HCFG_48_MHZ );
  1144.       }
  1145.       HAL_HCD_Connect_Callback(hhcd);
  1146.     }
  1147.     else
  1148.     {
  1149.       /* Cleanup HPRT */
  1150.       USBx_HPRT0 &= ~(USB_OTG_HPRT_PENA | USB_OTG_HPRT_PCDET |\
  1151.         USB_OTG_HPRT_PENCHNG | USB_OTG_HPRT_POCCHNG );
  1152.      
  1153.       USB_UNMASK_INTERRUPT(hhcd->Instance, USB_OTG_GINTSTS_DISCINT);
  1154.     }
  1155.   }
  1156.  
  1157.   /* Check For an over current */
  1158.   if((hprt0 & USB_OTG_HPRT_POCCHNG) == USB_OTG_HPRT_POCCHNG)
  1159.   {
  1160.     hprt0_dup |= USB_OTG_HPRT_POCCHNG;
  1161.   }
  1162.  
  1163.   /* Clear Port Interrupts */
  1164.   USBx_HPRT0 = hprt0_dup;
  1165. }
  1166.  
  1167. /**
  1168.   * @}
  1169.   */
  1170.  
  1171. /**
  1172.   * @}
  1173.   */
  1174.  
  1175. #endif /* STM32F105xC || STM32F107xC */
  1176.  
  1177. #endif /* HAL_HCD_MODULE_ENABLED */
  1178.  
  1179. /**
  1180.   * @}
  1181.   */
  1182.  
  1183. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  1184.