STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_pcd.c

/**
  ******************************************************************************
  * @file    stm32f7xx_hal_pcd.c
  * @author  MCD Application Team
  * @version V1.0.1
  * @date    25-June-2015
  * @brief   PCD 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 #####
  ==============================================================================
    [..]
      The PCD HAL driver can be used as follows:

     (#) Declare a PCD_HandleTypeDef handle structure, for example:
         PCD_HandleTypeDef  hpcd;

     (#) Fill parameters of Init structure in HCD handle

     (#) Call HAL_PCD_Init() API to initialize the HCD peripheral (Core, Device core, ...)

     (#) Initialize the PCD low level resources through the HAL_PCD_MspInit() API:
         (##) Enable the PCD/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 PCD pin-out
         (##) Configure PCD NVIC interrupt

     (#)Associate the Upper USB device stack to the HAL PCD Driver:
         (##) hpcd.pData = pdev;

     (#)Enable HCD transmission and reception:
         (##) HAL_PCD_Start();

  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2015 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 "stm32f7xx_hal.h"

/** @addtogroup STM32F7xx_HAL_Driver
  * @{
  */

/** @defgroup PCD PCD
  * @brief PCD HAL module driver
  * @{
  */

#ifdef HAL_PCD_MODULE_ENABLED

/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/** @defgroup PCD_Private_Macros PCD Private Macros
  * @{
  */
#define PCD_MIN(a, b)  (((a) < (b)) ? (a) : (b))
#define PCD_MAX(a, b)  (((a) > (b)) ? (a) : (b))
/**
  * @}
  */

/* Private functions prototypes ----------------------------------------------*/
/** @defgroup PCD_Private_Functions PCD Private Functions
  * @{
  */
static HAL_StatusTypeDef PCD_WriteEmptyTxFifo(PCD_HandleTypeDef *hpcd, uint32_t epnum);
/**
  * @}
  */

/* Exported functions --------------------------------------------------------*/
/** @defgroup PCD_Exported_Functions PCD Exported Functions
  * @{
  */

/** @defgroup PCD_Exported_Functions_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  Initializes the PCD according to the specified
  *         parameters in the PCD_InitTypeDef and create the associated handle.
  * @param  hpcd: PCD handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_Init(PCD_HandleTypeDef *hpcd)
{
    uint32_t i = 0;

    /* Check the PCD handle allocation */
    if (hpcd == NULL) {
        return HAL_ERROR;
    }

    /* Check the parameters */
    assert_param(IS_PCD_ALL_INSTANCE(hpcd->Instance));

    hpcd->State = HAL_PCD_STATE_BUSY;

    /* Init the low level hardware : GPIO, CLOCK, NVIC... */
    HAL_PCD_MspInit(hpcd);

    /* Disable the Interrupts */
    __HAL_PCD_DISABLE(hpcd);

    /*Init the Core (common init.) */
    USB_CoreInit(hpcd->Instance, hpcd->Init);

    /* Force Device Mode*/
    USB_SetCurrentMode(hpcd->Instance , USB_OTG_DEVICE_MODE);

    /* Init endpoints structures */
    for (i = 0; i < 15 ; i++) {
        /* Init ep structure */
        hpcd->IN_ep[i].is_in = 1;
        hpcd->IN_ep[i].num = i;
        hpcd->IN_ep[i].tx_fifo_num = i;
        /* Control until ep is activated */
        hpcd->IN_ep[i].type = EP_TYPE_CTRL;
        hpcd->IN_ep[i].maxpacket =  0;
        hpcd->IN_ep[i].xfer_buff = 0;
        hpcd->IN_ep[i].xfer_len = 0;
    }

    for (i = 0; i < 15 ; i++) {
        hpcd->OUT_ep[i].is_in = 0;
        hpcd->OUT_ep[i].num = i;
        hpcd->IN_ep[i].tx_fifo_num = i;
        /* Control until ep is activated */
        hpcd->OUT_ep[i].type = EP_TYPE_CTRL;
        hpcd->OUT_ep[i].maxpacket = 0;
        hpcd->OUT_ep[i].xfer_buff = 0;
        hpcd->OUT_ep[i].xfer_len = 0;

        hpcd->Instance->DIEPTXF[i] = 0;
    }

    /* Init Device */
    USB_DevInit(hpcd->Instance, hpcd->Init);

    hpcd->State= HAL_PCD_STATE_READY;

    /* Activate LPM */
    if (hpcd->Init.lpm_enable == 1) {
        HAL_PCDEx_ActivateLPM(hpcd);
    }

    USB_DevDisconnect (hpcd->Instance);
    return HAL_OK;
}

/**
  * @brief  DeInitializes the PCD peripheral
  * @param  hpcd: PCD handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_DeInit(PCD_HandleTypeDef *hpcd)
{
    /* Check the PCD handle allocation */
    if (hpcd == NULL) {
        return HAL_ERROR;
    }

    hpcd->State = HAL_PCD_STATE_BUSY;

    /* Stop Device */
    HAL_PCD_Stop(hpcd);

    /* DeInit the low level hardware */
    HAL_PCD_MspDeInit(hpcd);

    hpcd->State = HAL_PCD_STATE_RESET;

    return HAL_OK;
}

/**
  * @brief  Initializes the PCD MSP.
  * @param  hpcd: PCD handle
  * @retval None
  */
__weak void HAL_PCD_MspInit(PCD_HandleTypeDef *hpcd)
{
    /* NOTE : This function Should not be modified, when the callback is needed,
              the HAL_PCD_MspInit could be implemented in the user file
     */
}

/**
  * @brief  DeInitializes PCD MSP.
  * @param  hpcd: PCD handle
  * @retval None
  */
__weak void HAL_PCD_MspDeInit(PCD_HandleTypeDef *hpcd)
{
    /* NOTE : This function Should not be modified, when the callback is needed,
              the HAL_PCD_MspDeInit could be implemented in the user file
     */
}

/**
  * @}
  */

/** @defgroup PCD_Exported_Functions_Group2 IO operation functions
 *  @brief   Data transfers functions
 *
@verbatim
 ===============================================================================
                      ##### IO operation functions #####
 ===============================================================================
    [..]
    This subsection provides a set of functions allowing to manage the PCD data
    transfers.

@endverbatim
  * @{
  */

/**
  * @brief  Start The USB OTG Device.
  * @param  hpcd: PCD handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_Start(PCD_HandleTypeDef *hpcd)
{
    __HAL_LOCK(hpcd);
    USB_DevConnect (hpcd->Instance);
    __HAL_PCD_ENABLE(hpcd);
    __HAL_UNLOCK(hpcd);
    return HAL_OK;
}

/**
  * @brief  Stop The USB OTG Device.
  * @param  hpcd: PCD handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_Stop(PCD_HandleTypeDef *hpcd)
{
    __HAL_LOCK(hpcd);
    __HAL_PCD_DISABLE(hpcd);
    USB_StopDevice(hpcd->Instance);
    USB_DevDisconnect (hpcd->Instance);
    __HAL_UNLOCK(hpcd);
    return HAL_OK;
}

/**
  * @brief  This function handles PCD interrupt request.
  * @param  hpcd: PCD handle
  * @retval HAL status
  */
void HAL_PCD_IRQHandler(PCD_HandleTypeDef *hpcd)
{
    USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
    uint32_t i = 0, ep_intr = 0, epint = 0, epnum = 0;
    uint32_t fifoemptymsk = 0, temp = 0;
    USB_OTG_EPTypeDef *ep;

    /* ensure that we are in device mode */
    if (USB_GetMode(hpcd->Instance) == USB_OTG_MODE_DEVICE) {
        /* avoid spurious interrupt */
        if (__HAL_PCD_IS_INVALID_INTERRUPT(hpcd)) {
            return;
        }

        if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_MMIS)) {
            /* incorrect mode, acknowledge the interrupt */
            __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_MMIS);
        }

        if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_OEPINT)) {
            epnum = 0;

            /* Read in the device interrupt bits */
            ep_intr = USB_ReadDevAllOutEpInterrupt(hpcd->Instance);

            while ( ep_intr ) {
                if (ep_intr & 0x1) {
                    epint = USB_ReadDevOutEPInterrupt(hpcd->Instance, epnum);

                    if (( epint & USB_OTG_DOEPINT_XFRC) == USB_OTG_DOEPINT_XFRC) {
                        CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_XFRC);

                        if (hpcd->Init.dma_enable == 1) {
                            hpcd->OUT_ep[epnum].xfer_count = hpcd->OUT_ep[epnum].maxpacket- (USBx_OUTEP(epnum)->DOEPTSIZ & USB_OTG_DOEPTSIZ_XFRSIZ);
                            hpcd->OUT_ep[epnum].xfer_buff += hpcd->OUT_ep[epnum].maxpacket;
                        }

                        HAL_PCD_DataOutStageCallback(hpcd, epnum);
                        if (hpcd->Init.dma_enable == 1) {
                            if ((epnum == 0) && (hpcd->OUT_ep[epnum].xfer_len == 0)) {
                                /* this is ZLP, so prepare EP0 for next setup */
                                USB_EP0_OutStart(hpcd->Instance, 1, (uint8_t *)hpcd->Setup);
                            }
                        }
                    }

                    if (( epint & USB_OTG_DOEPINT_STUP) == USB_OTG_DOEPINT_STUP) {
                        /* Inform the upper layer that a setup packet is available */
                        HAL_PCD_SetupStageCallback(hpcd);
                        CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_STUP);
                    }

                    if (( epint & USB_OTG_DOEPINT_OTEPDIS) == USB_OTG_DOEPINT_OTEPDIS) {
                        CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_OTEPDIS);
                    }
                }
                epnum++;
                ep_intr >>= 1;
            }
        }

        if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_IEPINT)) {
            /* Read in the device interrupt bits */
            ep_intr = USB_ReadDevAllInEpInterrupt(hpcd->Instance);

            epnum = 0;

            while ( ep_intr ) {
                if (ep_intr & 0x1) { /* In ITR */
                    epint = USB_ReadDevInEPInterrupt(hpcd->Instance, epnum);

                    if (( epint & USB_OTG_DIEPINT_XFRC) == USB_OTG_DIEPINT_XFRC) {
                        fifoemptymsk = 0x1 << epnum;
                        USBx_DEVICE->DIEPEMPMSK &= ~fifoemptymsk;

                        CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_XFRC);

                        if (hpcd->Init.dma_enable == 1) {
                            hpcd->IN_ep[epnum].xfer_buff += hpcd->IN_ep[epnum].maxpacket;
                        }

                        HAL_PCD_DataInStageCallback(hpcd, epnum);

                        if (hpcd->Init.dma_enable == 1) {
                            /* this is ZLP, so prepare EP0 for next setup */
                            if ((epnum == 0) && (hpcd->IN_ep[epnum].xfer_len == 0)) {
                                /* prepare to rx more setup packets */
                                USB_EP0_OutStart(hpcd->Instance, 1, (uint8_t *)hpcd->Setup);
                            }
                        }
                    }
                    if (( epint & USB_OTG_DIEPINT_TOC) == USB_OTG_DIEPINT_TOC) {
                        CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_TOC);
                    }
                    if (( epint & USB_OTG_DIEPINT_ITTXFE) == USB_OTG_DIEPINT_ITTXFE) {
                        CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_ITTXFE);
                    }
                    if (( epint & USB_OTG_DIEPINT_INEPNE) == USB_OTG_DIEPINT_INEPNE) {
                        CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_INEPNE);
                    }
                    if (( epint & USB_OTG_DIEPINT_EPDISD) == USB_OTG_DIEPINT_EPDISD) {
                        CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_EPDISD);
                    }
                    if (( epint & USB_OTG_DIEPINT_TXFE) == USB_OTG_DIEPINT_TXFE) {
                        PCD_WriteEmptyTxFifo(hpcd , epnum);
                    }
                }
                epnum++;
                ep_intr >>= 1;
            }
        }

        /* Handle Resume Interrupt */
        if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_WKUINT)) {
            /* Clear the Remote Wake-up Signaling */
            USBx_DEVICE->DCTL &= ~USB_OTG_DCTL_RWUSIG;

            if (hpcd->LPM_State == LPM_L1) {
                hpcd->LPM_State = LPM_L0;
                HAL_PCDEx_LPM_Callback(hpcd, PCD_LPM_L0_ACTIVE);
            } else {
                HAL_PCD_ResumeCallback(hpcd);
            }
            __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_WKUINT);
        }

        /* Handle Suspend Interrupt */
        if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_USBSUSP)) {

            if ((USBx_DEVICE->DSTS & USB_OTG_DSTS_SUSPSTS) == USB_OTG_DSTS_SUSPSTS) {

                HAL_PCD_SuspendCallback(hpcd);
            }
            __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_USBSUSP);
        }

        /* Handle LPM Interrupt */
        if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_LPMINT)) {
            __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_LPMINT);
            if ( hpcd->LPM_State == LPM_L0) {
                hpcd->LPM_State = LPM_L1;
                hpcd->BESL = (hpcd->Instance->GLPMCFG & USB_OTG_GLPMCFG_BESL) >>2 ;
                HAL_PCDEx_LPM_Callback(hpcd, PCD_LPM_L1_ACTIVE);
            } else {
                HAL_PCD_SuspendCallback(hpcd);
            }
        }

        /* Handle Reset Interrupt */
        if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_USBRST)) {
            USBx_DEVICE->DCTL &= ~USB_OTG_DCTL_RWUSIG;
            USB_FlushTxFifo(hpcd->Instance ,  0 );

            for (i = 0; i < hpcd->Init.dev_endpoints ; i++) {
                USBx_INEP(i)->DIEPINT = 0xFF;
                USBx_OUTEP(i)->DOEPINT = 0xFF;
            }
            USBx_DEVICE->DAINT = 0xFFFFFFFF;
            USBx_DEVICE->DAINTMSK |= 0x10001;

            if (hpcd->Init.use_dedicated_ep1) {
                USBx_DEVICE->DOUTEP1MSK |= (USB_OTG_DOEPMSK_STUPM | USB_OTG_DOEPMSK_XFRCM | USB_OTG_DOEPMSK_EPDM);
                USBx_DEVICE->DINEP1MSK |= (USB_OTG_DIEPMSK_TOM | USB_OTG_DIEPMSK_XFRCM | USB_OTG_DIEPMSK_EPDM);
            } else {
                USBx_DEVICE->DOEPMSK |= (USB_OTG_DOEPMSK_STUPM | USB_OTG_DOEPMSK_XFRCM | USB_OTG_DOEPMSK_EPDM);
                USBx_DEVICE->DIEPMSK |= (USB_OTG_DIEPMSK_TOM | USB_OTG_DIEPMSK_XFRCM | USB_OTG_DIEPMSK_EPDM);
            }

            /* Set Default Address to 0 */
            USBx_DEVICE->DCFG &= ~USB_OTG_DCFG_DAD;

            /* setup EP0 to receive SETUP packets */
            USB_EP0_OutStart(hpcd->Instance, hpcd->Init.dma_enable, (uint8_t *)hpcd->Setup);

            __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_USBRST);
        }

        /* Handle Enumeration done Interrupt */
        if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_ENUMDNE)) {
            USB_ActivateSetup(hpcd->Instance);
            hpcd->Instance->GUSBCFG &= ~USB_OTG_GUSBCFG_TRDT;

            if ( USB_GetDevSpeed(hpcd->Instance) == USB_OTG_SPEED_HIGH) {
                hpcd->Init.speed            = USB_OTG_SPEED_HIGH;
                hpcd->Init.ep0_mps          = USB_OTG_HS_MAX_PACKET_SIZE ;
                hpcd->Instance->GUSBCFG |= (uint32_t)((USBD_HS_TRDT_VALUE << 10) & USB_OTG_GUSBCFG_TRDT);
            } else {
                hpcd->Init.speed            = USB_OTG_SPEED_FULL;
                hpcd->Init.ep0_mps          = USB_OTG_FS_MAX_PACKET_SIZE ;
                hpcd->Instance->GUSBCFG |= (uint32_t)((USBD_FS_TRDT_VALUE << 10) & USB_OTG_GUSBCFG_TRDT);
            }

            HAL_PCD_ResetCallback(hpcd);

            __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_ENUMDNE);
        }

        /* Handle RxQLevel Interrupt */
        if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_RXFLVL)) {
            USB_MASK_INTERRUPT(hpcd->Instance, USB_OTG_GINTSTS_RXFLVL);
            temp = USBx->GRXSTSP;
            ep = &hpcd->OUT_ep[temp & USB_OTG_GRXSTSP_EPNUM];

            if (((temp & USB_OTG_GRXSTSP_PKTSTS) >> 17) ==  STS_DATA_UPDT) {
                if ((temp & USB_OTG_GRXSTSP_BCNT) != 0) {
                    USB_ReadPacket(USBx, ep->xfer_buff, (temp & USB_OTG_GRXSTSP_BCNT) >> 4);
                    ep->xfer_buff += (temp & USB_OTG_GRXSTSP_BCNT) >> 4;
                    ep->xfer_count += (temp & USB_OTG_GRXSTSP_BCNT) >> 4;
                }
            } else if (((temp & USB_OTG_GRXSTSP_PKTSTS) >> 17) ==  STS_SETUP_UPDT) {
                USB_ReadPacket(USBx, (uint8_t *)hpcd->Setup, 8);
                ep->xfer_count += (temp & USB_OTG_GRXSTSP_BCNT) >> 4;
            }
            USB_UNMASK_INTERRUPT(hpcd->Instance, USB_OTG_GINTSTS_RXFLVL);
        }

        /* Handle SOF Interrupt */
        if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_SOF)) {
            HAL_PCD_SOFCallback(hpcd);
            __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_SOF);
        }

        /* Handle Incomplete ISO IN Interrupt */
        if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_IISOIXFR)) {
            HAL_PCD_ISOINIncompleteCallback(hpcd, epnum);
            __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_IISOIXFR);
        }

        /* Handle Incomplete ISO OUT Interrupt */
        if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_PXFR_INCOMPISOOUT)) {
            HAL_PCD_ISOOUTIncompleteCallback(hpcd, epnum);
            __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_PXFR_INCOMPISOOUT);
        }

        /* Handle Connection event Interrupt */
        if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_SRQINT)) {
            HAL_PCD_ConnectCallback(hpcd);
            __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_SRQINT);
        }

        /* Handle Disconnection event Interrupt */
        if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_OTGINT)) {
            temp = hpcd->Instance->GOTGINT;

            if ((temp & USB_OTG_GOTGINT_SEDET) == USB_OTG_GOTGINT_SEDET) {
                HAL_PCD_DisconnectCallback(hpcd);
            }
            hpcd->Instance->GOTGINT |= temp;
        }
    }
}

/**
  * @brief  Data out stage callbacks
  * @param  hpcd: PCD handle
  * @param  epnum: endpoint number
  * @retval None
  */
__weak void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
    /* NOTE : This function Should not be modified, when the callback is needed,
              the HAL_PCD_DataOutStageCallback could be implemented in the user file
     */
}

/**
  * @brief  Data IN stage callbacks
  * @param  hpcd: PCD handle
  * @param  epnum: endpoint number
  * @retval None
  */
__weak void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
    /* NOTE : This function Should not be modified, when the callback is needed,
              the HAL_PCD_DataInStageCallback could be implemented in the user file
     */
}
/**
  * @brief  Setup stage callback
  * @param  hpcd: PCD handle
  * @retval None
  */
__weak void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd)
{
    /* NOTE : This function Should not be modified, when the callback is needed,
              the HAL_PCD_SetupStageCallback could be implemented in the user file
     */
}

/**
  * @brief  USB Start Of Frame callbacks
  * @param  hpcd: PCD handle
  * @retval None
  */
__weak void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
{
    /* NOTE : This function Should not be modified, when the callback is needed,
              the HAL_PCD_SOFCallback could be implemented in the user file
     */
}

/**
  * @brief  USB Reset callbacks
  * @param  hpcd: PCD handle
  * @retval None
  */
__weak void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
{
    /* NOTE : This function Should not be modified, when the callback is needed,
              the HAL_PCD_ResetCallback could be implemented in the user file
     */
}


/**
  * @brief  Suspend event callbacks
  * @param  hpcd: PCD handle
  * @retval None
  */
__weak void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd)
{
    /* NOTE : This function Should not be modified, when the callback is needed,
              the HAL_PCD_SuspendCallback could be implemented in the user file
     */
}

/**
  * @brief  Resume event callbacks
  * @param  hpcd: PCD handle
  * @retval None
  */
__weak void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
{
    /* NOTE : This function Should not be modified, when the callback is needed,
              the HAL_PCD_ResumeCallback could be implemented in the user file
     */
}

/**
  * @brief  Incomplete ISO OUT callbacks
  * @param  hpcd: PCD handle
  * @param  epnum: endpoint number
  * @retval None
  */
__weak void HAL_PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
    /* NOTE : This function Should not be modified, when the callback is needed,
              the HAL_PCD_ISOOUTIncompleteCallback could be implemented in the user file
     */
}

/**
  * @brief  Incomplete ISO IN  callbacks
  * @param  hpcd: PCD handle
  * @param  epnum: endpoint number
  * @retval None
  */
__weak void HAL_PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
    /* NOTE : This function Should not be modified, when the callback is needed,
              the HAL_PCD_ISOINIncompleteCallback could be implemented in the user file
     */
}

/**
  * @brief  Connection event callbacks
  * @param  hpcd: PCD handle
  * @retval None
  */
__weak void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd)
{
    /* NOTE : This function Should not be modified, when the callback is needed,
              the HAL_PCD_ConnectCallback could be implemented in the user file
     */
}

/**
  * @brief  Disconnection event callbacks
  * @param  hpcd: PCD handle
  * @retval None
  */
__weak void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd)
{
    /* NOTE : This function Should not be modified, when the callback is needed,
              the HAL_PCD_DisconnectCallback could be implemented in the user file
     */
}

/**
  * @}
  */

/** @defgroup PCD_Exported_Functions_Group3 Peripheral Control functions
 *  @brief   management functions
 *
@verbatim
 ===============================================================================
                      ##### Peripheral Control functions #####
 ===============================================================================
    [..]
    This subsection provides a set of functions allowing to control the PCD data
    transfers.

@endverbatim
  * @{
  */

/**
  * @brief  Connect the USB device
  * @param  hpcd: PCD handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_DevConnect(PCD_HandleTypeDef *hpcd)
{
    __HAL_LOCK(hpcd);
    USB_DevConnect(hpcd->Instance);
    __HAL_UNLOCK(hpcd);
    return HAL_OK;
}

/**
  * @brief  Disconnect the USB device
  * @param  hpcd: PCD handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_DevDisconnect(PCD_HandleTypeDef *hpcd)
{
    __HAL_LOCK(hpcd);
    USB_DevDisconnect(hpcd->Instance);
    __HAL_UNLOCK(hpcd);
    return HAL_OK;
}

/**
  * @brief  Set the USB Device address
  * @param  hpcd: PCD handle
  * @param  address: new device address
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_SetAddress(PCD_HandleTypeDef *hpcd, uint8_t address)
{
    __HAL_LOCK(hpcd);
    USB_SetDevAddress(hpcd->Instance, address);
    __HAL_UNLOCK(hpcd);
    return HAL_OK;
}
/**
  * @brief  Open and configure an endpoint
  * @param  hpcd: PCD handle
  * @param  ep_addr: endpoint address
  * @param  ep_mps: endpoint max packet size
  * @param  ep_type: endpoint type
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_EP_Open(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint16_t ep_mps, uint8_t ep_type)
{
    HAL_StatusTypeDef  ret = HAL_OK;
    USB_OTG_EPTypeDef *ep;

    if ((ep_addr & 0x80) == 0x80) {
        ep = &hpcd->IN_ep[ep_addr & 0x7F];
    } else {
        ep = &hpcd->OUT_ep[ep_addr & 0x7F];
    }
    ep->num   = ep_addr & 0x7F;

    ep->is_in = (0x80 & ep_addr) != 0;
    ep->maxpacket = ep_mps;
    ep->type = ep_type;
    if (ep->is_in) {
        /* Assign a Tx FIFO */
        ep->tx_fifo_num = ep->num;
    }
    /* Set initial data PID. */
    if (ep_type == EP_TYPE_BULK ) {
        ep->data_pid_start = 0;
    }

    __HAL_LOCK(hpcd);
    USB_ActivateEndpoint(hpcd->Instance , ep);
    __HAL_UNLOCK(hpcd);
    return ret;
}


/**
  * @brief  Deactivate an endpoint
  * @param  hpcd: PCD handle
  * @param  ep_addr: endpoint address
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_EP_Close(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
{
    USB_OTG_EPTypeDef *ep;

    if ((ep_addr & 0x80) == 0x80) {
        ep = &hpcd->IN_ep[ep_addr & 0x7F];
    } else {
        ep = &hpcd->OUT_ep[ep_addr & 0x7F];
    }
    ep->num   = ep_addr & 0x7F;

    ep->is_in = (0x80 & ep_addr) != 0;

    __HAL_LOCK(hpcd);
    USB_DeactivateEndpoint(hpcd->Instance , ep);
    __HAL_UNLOCK(hpcd);
    return HAL_OK;
}


/**
  * @brief  Receive an amount of data
  * @param  hpcd: PCD handle
  * @param  ep_addr: endpoint address
  * @param  pBuf: pointer to the reception buffer
  * @param  len: amount of data to be received
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_EP_Receive(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len)
{
    USB_OTG_EPTypeDef *ep;

    ep = &hpcd->OUT_ep[ep_addr & 0x7F];

    /*setup and start the Xfer */
    ep->xfer_buff = pBuf;
    ep->xfer_len = len;
    ep->xfer_count = 0;
    ep->is_in = 0;
    ep->num = ep_addr & 0x7F;

    if (hpcd->Init.dma_enable == 1) {
        ep->dma_addr = (uint32_t)pBuf;
    }

    __HAL_LOCK(hpcd);

    if ((ep_addr & 0x7F) == 0 ) {
        USB_EP0StartXfer(hpcd->Instance , ep, hpcd->Init.dma_enable);
    } else {
        USB_EPStartXfer(hpcd->Instance , ep, hpcd->Init.dma_enable);
    }
    __HAL_UNLOCK(hpcd);

    return HAL_OK;
}

/**
  * @brief  Get Received Data Size
  * @param  hpcd: PCD handle
  * @param  ep_addr: endpoint address
  * @retval Data Size
  */
uint16_t HAL_PCD_EP_GetRxCount(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
{
    return hpcd->OUT_ep[ep_addr & 0x7F].xfer_count;
}
/**
  * @brief  Send an amount of data
  * @param  hpcd: PCD handle
  * @param  ep_addr: endpoint address
  * @param  pBuf: pointer to the transmission buffer
  * @param  len: amount of data to be sent
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_EP_Transmit(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len)
{
    USB_OTG_EPTypeDef *ep;

    ep = &hpcd->IN_ep[ep_addr & 0x7F];

    /*setup and start the Xfer */
    ep->xfer_buff = pBuf;
    ep->xfer_len = len;
    ep->xfer_count = 0;
    ep->is_in = 1;
    ep->num = ep_addr & 0x7F;

    if (hpcd->Init.dma_enable == 1) {
        ep->dma_addr = (uint32_t)pBuf;
    }

    __HAL_LOCK(hpcd);

    if ((ep_addr & 0x7F) == 0 ) {
        USB_EP0StartXfer(hpcd->Instance , ep, hpcd->Init.dma_enable);
    } else {
        USB_EPStartXfer(hpcd->Instance , ep, hpcd->Init.dma_enable);
    }

    __HAL_UNLOCK(hpcd);

    return HAL_OK;
}

/**
  * @brief  Set a STALL condition over an endpoint
  * @param  hpcd: PCD handle
  * @param  ep_addr: endpoint address
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_EP_SetStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
{
    USB_OTG_EPTypeDef *ep;

    if ((0x80 & ep_addr) == 0x80) {
        ep = &hpcd->IN_ep[ep_addr & 0x7F];
    } else {
        ep = &hpcd->OUT_ep[ep_addr];
    }

    ep->is_stall = 1;
    ep->num   = ep_addr & 0x7F;
    ep->is_in = ((ep_addr & 0x80) == 0x80);


    __HAL_LOCK(hpcd);
    USB_EPSetStall(hpcd->Instance , ep);
    if ((ep_addr & 0x7F) == 0) {
        USB_EP0_OutStart(hpcd->Instance, hpcd->Init.dma_enable, (uint8_t *)hpcd->Setup);
    }
    __HAL_UNLOCK(hpcd);

    return HAL_OK;
}

/**
  * @brief  Clear a STALL condition over in an endpoint
  * @param  hpcd: PCD handle
  * @param  ep_addr: endpoint address
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_EP_ClrStall(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
{
    USB_OTG_EPTypeDef *ep;

    if ((0x80 & ep_addr) == 0x80) {
        ep = &hpcd->IN_ep[ep_addr & 0x7F];
    } else {
        ep = &hpcd->OUT_ep[ep_addr];
    }

    ep->is_stall = 0;
    ep->num   = ep_addr & 0x7F;
    ep->is_in = ((ep_addr & 0x80) == 0x80);

    __HAL_LOCK(hpcd);
    USB_EPClearStall(hpcd->Instance , ep);
    __HAL_UNLOCK(hpcd);

    return HAL_OK;
}

/**
  * @brief  Flush an endpoint
  * @param  hpcd: PCD handle
  * @param  ep_addr: endpoint address
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_EP_Flush(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
{
    __HAL_LOCK(hpcd);

    if ((ep_addr & 0x80) == 0x80) {
        USB_FlushTxFifo(hpcd->Instance, ep_addr & 0x7F);
    } else {
        USB_FlushRxFifo(hpcd->Instance);
    }

    __HAL_UNLOCK(hpcd);

    return HAL_OK;
}

/**
  * @brief  HAL_PCD_ActivateRemoteWakeup : Active remote wake-up signalling
  * @param  hpcd: PCD handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_ActivateRemoteWakeup(PCD_HandleTypeDef *hpcd)
{
    USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;

    if ((USBx_DEVICE->DSTS & USB_OTG_DSTS_SUSPSTS) == USB_OTG_DSTS_SUSPSTS) {
        /* Activate Remote wake-up signaling */
        USBx_DEVICE->DCTL |= USB_OTG_DCTL_RWUSIG;
    }
    return HAL_OK;
}

/**
  * @brief  HAL_PCD_DeActivateRemoteWakeup : de-active remote wake-up signalling
  * @param  hpcd: PCD handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_PCD_DeActivateRemoteWakeup(PCD_HandleTypeDef *hpcd)
{
    USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;

    /* De-activate Remote wake-up signaling */
    USBx_DEVICE->DCTL &= ~(USB_OTG_DCTL_RWUSIG);
    return HAL_OK;
}
/**
  * @}
  */

/** @defgroup PCD_Exported_Functions_Group4 Peripheral State functions
 *  @brief   Peripheral State functions
 *
@verbatim
 ===============================================================================
                      ##### Peripheral State functions #####
 ===============================================================================
    [..]
    This subsection permits to get in run-time the status of the peripheral
    and the data flow.

@endverbatim
  * @{
  */

/**
  * @brief  Return the PCD state
  * @param  hpcd: PCD handle
  * @retval HAL state
  */
PCD_StateTypeDef HAL_PCD_GetState(PCD_HandleTypeDef *hpcd)
{
    return hpcd->State;
}
/**
  * @}
  */

/**
  * @}
  */

/* Private functions ---------------------------------------------------------*/
/** @addtogroup PCD_Private_Functions
  * @{
  */

/**
  * @brief  DCD_WriteEmptyTxFifo
  *         check FIFO for the next packet to be loaded
  * @param  hpcd: PCD handle
  * @param  epnum : endpoint number
  * @retval HAL status
  */
static HAL_StatusTypeDef PCD_WriteEmptyTxFifo(PCD_HandleTypeDef *hpcd, uint32_t epnum)
{
    USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
    USB_OTG_EPTypeDef *ep;
    int32_t len = 0;
    uint32_t len32b;
    uint32_t fifoemptymsk = 0;

    ep = &hpcd->IN_ep[epnum];
    len = ep->xfer_len - ep->xfer_count;

    if (len > (int32_t)ep->maxpacket) {
        len = ep->maxpacket;
    }


    len32b = (len + 3) / 4;

    while  ( (USBx_INEP(epnum)->DTXFSTS & USB_OTG_DTXFSTS_INEPTFSAV) > len32b &&
             ep->xfer_count < ep->xfer_len &&
             ep->xfer_len != 0) {
        /* Write the FIFO */
        len = ep->xfer_len - ep->xfer_count;

        if (len > (int32_t)ep->maxpacket) {
            len = ep->maxpacket;
        }
        len32b = (len + 3) / 4;

        USB_WritePacket(USBx, ep->xfer_buff, epnum, len, hpcd->Init.dma_enable);

        ep->xfer_buff  += len;
        ep->xfer_count += len;
    }

    if (len <= 0) {
        fifoemptymsk = 0x1 << epnum;
        USBx_DEVICE->DIEPEMPMSK &= ~fifoemptymsk;

    }

    return HAL_OK;
}

/**
  * @}
  */

#endif /* HAL_PCD_MODULE_ENABLED */
/**
  * @}
  */

/**
  * @}
  */

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