Input and Output operation functions

Data transfers functions. More...

Functions
HAL_StatusTypeDef	HAL_PCD_Start (PCD_HandleTypeDef *hpcd)
	Start the USB device. More...
HAL_StatusTypeDef	HAL_PCD_Stop (PCD_HandleTypeDef *hpcd)
	Stop the USB device. More...
void	HAL_PCD_IRQHandler (PCD_HandleTypeDef *hpcd)
	Handles PCD interrupt request. More...
void	HAL_PCD_SOFCallback (PCD_HandleTypeDef *hpcd)
	USB Start Of Frame callback. More...
void	HAL_PCD_SetupStageCallback (PCD_HandleTypeDef *hpcd)
	Setup stage callback. More...
void	HAL_PCD_ResetCallback (PCD_HandleTypeDef *hpcd)
	USB Reset callback. More...
void	HAL_PCD_SuspendCallback (PCD_HandleTypeDef *hpcd)
	Suspend event callback. More...
void	HAL_PCD_ResumeCallback (PCD_HandleTypeDef *hpcd)
	Resume event callback. More...
void	HAL_PCD_ConnectCallback (PCD_HandleTypeDef *hpcd)
	Connection event callback. More...
void	HAL_PCD_DisconnectCallback (PCD_HandleTypeDef *hpcd)
	Disconnection event callback. More...
void	HAL_PCD_DataOutStageCallback (PCD_HandleTypeDef *hpcd, uint8_t epnum)
	Data OUT stage callback. More...
void	HAL_PCD_DataInStageCallback (PCD_HandleTypeDef *hpcd, uint8_t epnum)
	Data IN stage callback. More...
void	HAL_PCD_ISOOUTIncompleteCallback (PCD_HandleTypeDef *hpcd, uint8_t epnum)
	Incomplete ISO OUT callback. More...
void	HAL_PCD_ISOINIncompleteCallback (PCD_HandleTypeDef *hpcd, uint8_t epnum)
	Incomplete ISO IN callback. More...

Detailed Description

Data transfers functions.

 ===============================================================================
                      ##### IO operation functions #####
 ===============================================================================
    [..]
    This subsection provides a set of functions allowing to manage the PCD data
    transfers.

Function Documentation

HAL_PCD_ConnectCallback()

__weak void HAL_PCD_ConnectCallback

(

PCD_HandleTypeDef *

hpcd

)

Connection event callback.

Parameters

hpcd	PCD handle

Return values

None

Definition at line 1679 of file stm32l4xx_hal_pcd.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpcd);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_PCD_ConnectCallback could be implemented in the user file
   */
}

HAL_PCD_DataInStageCallback()

__weak void HAL_PCD_DataInStageCallback	(	PCD_HandleTypeDef *	hpcd,
		uint8_t	epnum
	)

Data IN stage callback.

Parameters

hpcd	PCD handle
epnum	endpoint number

Return values

None

Definition at line 1555 of file stm32l4xx_hal_pcd.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpcd);
  UNUSED(epnum);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_PCD_DataInStageCallback could be implemented in the user file
   */
}

HAL_PCD_DataOutStageCallback()

__weak void HAL_PCD_DataOutStageCallback	(	PCD_HandleTypeDef *	hpcd,
		uint8_t	epnum
	)

Data OUT stage callback.

Parameters

hpcd	PCD handle
epnum	endpoint number

Return values

None

Definition at line 1538 of file stm32l4xx_hal_pcd.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpcd);
  UNUSED(epnum);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_PCD_DataOutStageCallback could be implemented in the user file
   */
}

HAL_PCD_DisconnectCallback()

__weak void HAL_PCD_DisconnectCallback

(

PCD_HandleTypeDef *

hpcd

)

Disconnection event callback.

Parameters

hpcd	PCD handle

Return values

None

Definition at line 1694 of file stm32l4xx_hal_pcd.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpcd);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_PCD_DisconnectCallback could be implemented in the user file
   */
}

HAL_PCD_IRQHandler()

void HAL_PCD_IRQHandler

(

PCD_HandleTypeDef *

hpcd

)

Handles PCD interrupt request.

This function handles PCD interrupt request.

Parameters

hpcd	PCD handle

Return values

HAL

status

Definition at line 1046 of file stm32l4xx_hal_pcd.c.

{
  USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
  uint32_t USBx_BASE = (uint32_t)USBx;
  uint32_t i, ep_intr, epint, epnum = 0U;
  uint32_t fifoemptymsk, temp;
  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 = 0U;

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

      while (ep_intr != 0U)
      {
        if ((ep_intr & 0x1U) != 0U)
        {
          epint = USB_ReadDevOutEPInterrupt(hpcd->Instance, (uint8_t)epnum);

          if ((epint & USB_OTG_DOEPINT_XFRC) == USB_OTG_DOEPINT_XFRC)
          {
            CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_XFRC);
            (void)PCD_EP_OutXfrComplete_int(hpcd, epnum);
          }

          if ((epint & USB_OTG_DOEPINT_STUP) == USB_OTG_DOEPINT_STUP)
          {
            /* Class B setup phase done for previous decoded setup */
            (void)PCD_EP_OutSetupPacket_int(hpcd, epnum);
            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);
          }

          /* Clear Status Phase Received interrupt */
          if ((epint & USB_OTG_DOEPINT_OTEPSPR) == USB_OTG_DOEPINT_OTEPSPR)
          {
            CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_OTEPSPR);
          }

          /* Clear OUT NAK interrupt */
          if ((epint & USB_OTG_DOEPINT_NAK) == USB_OTG_DOEPINT_NAK)
          {
            CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_NAK);
          }
        }
        epnum++;
        ep_intr >>= 1U;
      }
    }

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

      epnum = 0U;

      while (ep_intr != 0U)
      {
        if ((ep_intr & 0x1U) != 0U) /* In ITR */
        {
          epint = USB_ReadDevInEPInterrupt(hpcd->Instance, (uint8_t)epnum);

          if ((epint & USB_OTG_DIEPINT_XFRC) == USB_OTG_DIEPINT_XFRC)
          {
            fifoemptymsk = (uint32_t)(0x1UL << (epnum & EP_ADDR_MSK));
            USBx_DEVICE->DIEPEMPMSK &= ~fifoemptymsk;

            CLEAR_IN_EP_INTR(epnum, USB_OTG_DIEPINT_XFRC);

#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
            hpcd->DataInStageCallback(hpcd, (uint8_t)epnum);
#else
            HAL_PCD_DataInStageCallback(hpcd, (uint8_t)epnum);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
          }
          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)
          {
            (void)PCD_WriteEmptyTxFifo(hpcd, epnum);
          }
        }
        epnum++;
        ep_intr >>= 1U;
      }
    }

    /* 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;

#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
        hpcd->LPMCallback(hpcd, PCD_LPM_L0_ACTIVE);
#else
        HAL_PCDEx_LPM_Callback(hpcd, PCD_LPM_L0_ACTIVE);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
      }
      else
      {
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
        hpcd->ResumeCallback(hpcd);
#else
        HAL_PCD_ResumeCallback(hpcd);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
      }

      __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)
      {
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
        hpcd->SuspendCallback(hpcd);
#else
        HAL_PCD_SuspendCallback(hpcd);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
      }
      __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) >> 2U;

#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
        hpcd->LPMCallback(hpcd, PCD_LPM_L1_ACTIVE);
#else
        HAL_PCDEx_LPM_Callback(hpcd, PCD_LPM_L1_ACTIVE);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
      }
      else
      {
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
        hpcd->SuspendCallback(hpcd);
#else
        HAL_PCD_SuspendCallback(hpcd);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
      }
    }
    
    /* Handle Reset Interrupt */
    if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_USBRST))
    {
      USBx_DEVICE->DCTL &= ~USB_OTG_DCTL_RWUSIG;
      (void)USB_FlushTxFifo(hpcd->Instance, 0x10U);

      for (i = 0U; i < hpcd->Init.dev_endpoints; i++)
      {
        USBx_INEP(i)->DIEPINT = 0xFB7FU;
        USBx_INEP(i)->DIEPCTL &= ~USB_OTG_DIEPCTL_STALL;
        USBx_OUTEP(i)->DOEPINT = 0xFB7FU;
        USBx_OUTEP(i)->DOEPCTL &= ~USB_OTG_DOEPCTL_STALL;
      }
      USBx_DEVICE->DAINTMSK |= 0x10001U;

      if (hpcd->Init.use_dedicated_ep1 != 0U)
      {
        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 |
                                USB_OTG_DOEPMSK_OTEPSPRM |
                                USB_OTG_DOEPMSK_NAKM;

        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 */
      (void)USB_EP0_OutStart(hpcd->Instance, (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))
    {
      (void)USB_ActivateSetup(hpcd->Instance);
      hpcd->Init.speed = USB_GetDevSpeed(hpcd->Instance);

      /* Set USB Turnaround time */
      (void)USB_SetTurnaroundTime(hpcd->Instance,
                                  HAL_RCC_GetHCLKFreq(),
                                  (uint8_t)hpcd->Init.speed);

#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
      hpcd->ResetCallback(hpcd);
#else
      HAL_PCD_ResetCallback(hpcd);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */

      __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) != 0U)
        {
          (void)USB_ReadPacket(USBx, ep->xfer_buff,
                               (uint16_t)((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)
      {
        (void)USB_ReadPacket(USBx, (uint8_t *)hpcd->Setup, 8U);
        ep->xfer_count += (temp & USB_OTG_GRXSTSP_BCNT) >> 4;
      }
      else
      {
        /* ... */
      }
      USB_UNMASK_INTERRUPT(hpcd->Instance, USB_OTG_GINTSTS_RXFLVL);
    }

    /* Handle SOF Interrupt */
    if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_SOF))
    {
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
      hpcd->SOFCallback(hpcd);
#else
      HAL_PCD_SOFCallback(hpcd);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */

      __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_SOF);
    }

    /* Handle Incomplete ISO IN Interrupt */
    if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_IISOIXFR))
    {
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
      hpcd->ISOINIncompleteCallback(hpcd, (uint8_t)epnum);
#else
      HAL_PCD_ISOINIncompleteCallback(hpcd, (uint8_t)epnum);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */

      __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))
    {
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
      hpcd->ISOOUTIncompleteCallback(hpcd, (uint8_t)epnum);
#else
      HAL_PCD_ISOOUTIncompleteCallback(hpcd, (uint8_t)epnum);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */

      __HAL_PCD_CLEAR_FLAG(hpcd, USB_OTG_GINTSTS_PXFR_INCOMPISOOUT);
    }

    /* Handle Connection event Interrupt */
    if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_SRQINT))
    {
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
      hpcd->ConnectCallback(hpcd);
#else
      HAL_PCD_ConnectCallback(hpcd);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */

      __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)
      {
#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
        hpcd->DisconnectCallback(hpcd);
#else
        HAL_PCD_DisconnectCallback(hpcd);
#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
      }
      hpcd->Instance->GOTGINT |= temp;
    }
  }
}

HAL_PCD_ISOINIncompleteCallback()

__weak void HAL_PCD_ISOINIncompleteCallback	(	PCD_HandleTypeDef *	hpcd,
		uint8_t	epnum
	)

Incomplete ISO IN callback.

Parameters

hpcd	PCD handle
epnum	endpoint number

Return values

None

Definition at line 1663 of file stm32l4xx_hal_pcd.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpcd);
  UNUSED(epnum);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_PCD_ISOINIncompleteCallback could be implemented in the user file
   */
}

HAL_PCD_ISOOUTIncompleteCallback()

__weak void HAL_PCD_ISOOUTIncompleteCallback	(	PCD_HandleTypeDef *	hpcd,
		uint8_t	epnum
	)

Incomplete ISO OUT callback.

Parameters

hpcd	PCD handle
epnum	endpoint number

Return values

None

Definition at line 1646 of file stm32l4xx_hal_pcd.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpcd);
  UNUSED(epnum);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_PCD_ISOOUTIncompleteCallback could be implemented in the user file
   */
}

HAL_PCD_ResetCallback()

__weak void HAL_PCD_ResetCallback

(

PCD_HandleTypeDef *

hpcd

)

USB Reset callback.

Parameters

hpcd	PCD handle

Return values

None

Definition at line 1600 of file stm32l4xx_hal_pcd.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpcd);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_PCD_ResetCallback could be implemented in the user file
   */
}

HAL_PCD_ResumeCallback()

__weak void HAL_PCD_ResumeCallback

(

PCD_HandleTypeDef *

hpcd

)

Resume event callback.

Parameters

hpcd	PCD handle

Return values

None

Definition at line 1630 of file stm32l4xx_hal_pcd.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpcd);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_PCD_ResumeCallback could be implemented in the user file
   */
}

HAL_PCD_SetupStageCallback()

__weak void HAL_PCD_SetupStageCallback

(

PCD_HandleTypeDef *

hpcd

)

Setup stage callback.

Parameters

hpcd	PCD handle

Return values

None

Definition at line 1570 of file stm32l4xx_hal_pcd.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpcd);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_PCD_SetupStageCallback could be implemented in the user file
   */
}

HAL_PCD_SOFCallback()

__weak void HAL_PCD_SOFCallback

(

PCD_HandleTypeDef *

hpcd

)

USB Start Of Frame callback.

Parameters

hpcd	PCD handle

Return values

None

Definition at line 1585 of file stm32l4xx_hal_pcd.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpcd);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_PCD_SOFCallback could be implemented in the user file
   */
}

HAL_PCD_Start()

HAL_StatusTypeDef HAL_PCD_Start

(

PCD_HandleTypeDef *

hpcd

)

Start the USB device.

Parameters

hpcd	PCD handle

Return values

HAL

status

Definition at line 999 of file stm32l4xx_hal_pcd.c.

{
#if defined (USB_OTG_FS)
  USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;
#endif /* defined (USB_OTG_FS) */

  __HAL_LOCK(hpcd);
#if defined (USB_OTG_FS)
  if (hpcd->Init.battery_charging_enable == 1U)
  {
    /* Enable USB Transceiver */
    USBx->GCCFG |= USB_OTG_GCCFG_PWRDWN;
  }
#endif /* defined (USB_OTG_FS) */
  (void)USB_DevConnect(hpcd->Instance);
  __HAL_PCD_ENABLE(hpcd);
  __HAL_UNLOCK(hpcd);
  return HAL_OK;
}

HAL_PCD_Stop()

HAL_StatusTypeDef HAL_PCD_Stop

(

PCD_HandleTypeDef *

hpcd

)

Stop the USB device.

Parameters

hpcd	PCD handle

Return values

HAL

status

Definition at line 1024 of file stm32l4xx_hal_pcd.c.

{
  __HAL_LOCK(hpcd);
  __HAL_PCD_DISABLE(hpcd);

  if (USB_StopDevice(hpcd->Instance) != HAL_OK)
  {
    __HAL_UNLOCK(hpcd);
    return HAL_ERROR;
  }

  (void)USB_DevDisconnect(hpcd->Instance);
  __HAL_UNLOCK(hpcd);

  return HAL_OK;
}

HAL_PCD_SuspendCallback()

__weak void HAL_PCD_SuspendCallback

(

PCD_HandleTypeDef *

hpcd

)

Suspend event callback.

Parameters

hpcd	PCD handle

Return values

None

Definition at line 1615 of file stm32l4xx_hal_pcd.c.

{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpcd);

  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_PCD_SuspendCallback could be implemented in the user file
   */
}