• 【STM32】STM32H750VBT6 CubeMX USBFS-UVC设备实现,以及移植问题

    开发环境

    ARM-MDK 5
    STM32H750VBT6核心板
    在这里插入图片描述

    CubeMX配置

    1. 时钟及内存

    这里没有开启DCache，因为和HAL库这里还有BUG。如果要开启DCache那么就不要Enable internal IP DMA。我看有文章说全速模式就是不能开启DMA的，但是我看不太对。没有DCache时确实能使用DMA，调试看过DMA确实打开了。我觉得有可能和LWIP一样，需要配置MPU。

    修改：
    参考ST社区的帖子知道：
    DTCM, which is not accessible by USB.内存配置问题，You can change the DTCM memory with another one which is accessible by USB.但是文章最后说DCache数据一致性的问题还是没有解决，只能关闭DCache。
    在这里插入图片描述
    internal IP DMA可以在下图位置使能。
    在这里插入图片描述
    在这里插入图片描述
    在这里插入图片描述

    2.配置USB在这里插入图片描述

    选择CDC设备即可，待会会修改：
    在这里插入图片描述

    3.生成代码

    在这里插入图片描述

    4.修改代码

    usb_uvc代码：

    git clone https://github.com/MisakaMikoto128/STM32H750_UVC.git

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    添加usb_uvc下的Inc到包含路径，添加usbd_uvc.c和usbd_uvc_if.c到项目：

    • 第一步：
      在这里插入图片描述

    在这里插入图片描述

    • 第二步：修改usb_device.c如下(已删减)：
    /* Includes ------------------------------------------------------------------*/

#include "usb_device.h"
#include "usbd_core.h"
#include "usbd_desc.h"
/* USER CODE BEGIN Includes */
#include "usbd_uvc.h"
#include "usbd_uvc_if.h"
/* USER CODE END Includes */
void MX_USB_DEVICE_Init(void)
{
  /* Init Device Library, add supported class and start the library. */
  if (USBD_Init(&hUsbDeviceFS, &FS_Desc, DEVICE_FS) != USBD_OK)
  {
    Error_Handler();
  }

	if (USBD_RegisterClass(&hUsbDeviceFS, &USBD_UVC) != USBD_OK)
	{
		Error_Handler();
	}

	if (USBD_UVC_RegisterCamera(&hUsbDeviceFS, &USBD_UVC_Camera) != USBD_OK)
	{
		Error_Handler();

	}
	if (USBD_Start(&hUsbDeviceFS) != USBD_OK)
	{
		Error_Handler();
	}
  /* USER CODE BEGIN USB_DEVICE_Init_PostTreatment */
  HAL_PWREx_EnableUSBVoltageDetector();
  /* USER CODE END USB_DEVICE_Init_PostTreatment */
}

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    • 第三步：这个步骤很重要，因为HAL库的USB库有些BUG，我拿来一以前的版本反而能够使用，用beyondCompare比较和Keil调试了一早上才找到问题所在(不太熟悉STM32的USB)。直接替换HAL_PCD_IRQHandler为这里的代码：代码我贴在后面了，有点长。
      效果图下图：
      生成图片数组的工具看这篇文章：
      【数字图像处理】YUV格式转化为YUY2
      在这里插入图片描述
      ：

    HAL_PCD_IRQHandler的代码

    /**
  * @brief  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 USBx_BASE = (uint32_t)USBx;
  uint32_t i, ep_intr, epint, epnum;
  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);
    }

     /* 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);
    }

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

          if ((epint & USB_OTG_DOEPINT_OTEPDIS) == USB_OTG_DOEPINT_OTEPDIS)
          {
            CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_OTEPDIS);
          }

          /* Clear OUT Endpoint disable interrupt */
          if ((epint & USB_OTG_DOEPINT_EPDISD) == USB_OTG_DOEPINT_EPDISD)
          {
            if ((USBx->GINTSTS & USB_OTG_GINTSTS_BOUTNAKEFF) == USB_OTG_GINTSTS_BOUTNAKEFF)
            {
              USBx_DEVICE->DCTL |= USB_OTG_DCTL_CGONAK;
            }

            ep = &hpcd->OUT_ep[epnum];

            if (ep->is_iso_incomplete == 1U)
            {
              ep->is_iso_incomplete = 0U;

#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 */
            }

            CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_EPDISD);
          }

          /* 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 (hpcd->Init.dma_enable == 1U)
            {
              hpcd->IN_ep[epnum].xfer_buff += hpcd->IN_ep[epnum].maxpacket;

              /* this is ZLP, so prepare EP0 for next setup */
              if ((epnum == 0U) && (hpcd->IN_ep[epnum].xfer_len == 0U))
              {
                /* prepare to rx more setup packets */
                (void)USB_EP0_OutStart(hpcd->Instance, 1U, (uint8_t *)hpcd->Setup);
              }
            }

#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)
          {
            (void)USB_FlushTxFifo(USBx, epnum);

            ep = &hpcd->IN_ep[epnum];

            if (ep->is_iso_incomplete == 1U)
            {
              ep->is_iso_incomplete = 0U;

#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 */
            }

            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_INEP(i)->DIEPCTL |= USB_OTG_DIEPCTL_SNAK;
        USBx_OUTEP(i)->DOEPINT = 0xFB7FU;
        USBx_OUTEP(i)->DOEPCTL &= ~USB_OTG_DOEPCTL_STALL;
        USBx_OUTEP(i)->DOEPCTL |= USB_OTG_DOEPCTL_SNAK;
      }
      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->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))
    {
      (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 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 Global OUT NAK effective Interrupt */
    if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_BOUTNAKEFF))
    {
      USBx->GINTMSK &= ~USB_OTG_GINTMSK_GONAKEFFM;

      for (epnum = 1U; epnum < hpcd->Init.dev_endpoints; epnum++)
      {
        if (hpcd->OUT_ep[epnum].is_iso_incomplete == 1U)
        {
          /* Abort current transaction and disable the EP */
          (void)HAL_PCD_EP_Abort(hpcd, (uint8_t)epnum);
        }
      }
    }

    /* Handle Incomplete ISO IN Interrupt */
    if (__HAL_PCD_GET_FLAG(hpcd, USB_OTG_GINTSTS_IISOIXFR))
    {
      /* Keep application checking the corresponding Iso IN endpoint
      causing the incomplete Interrupt */
      epnum = 0U;

#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))
    {
      /* Keep application checking the corresponding Iso OUT endpoint
      causing the incomplete Interrupt */
      epnum = 0U;

#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;
    }
  }
}
#endif /* defined (USB_OTG_FS) || defined (USB_OTG_HS) */

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    我参考的HAL_PCD_IRQHandler代码：

    /**
  * @brief  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 USBx_BASE = (uint32_t)USBx;
  uint32_t i, ep_intr, epint, epnum;
  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);
    }

     /* 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);
    }

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

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

              /* this is ZLP, so prepare EP0 for next setup */
              if ((epnum == 0U) && (hpcd->IN_ep[epnum].xfer_len == 0U))
              {
                /* prepare to rx more setup packets */
                (void)USB_EP0_OutStart(hpcd->Instance, 1U, (uint8_t *)hpcd->Setup);
              }
            }

#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_INEP(i)->DIEPCTL |= USB_OTG_DIEPCTL_SNAK;
        USBx_OUTEP(i)->DOEPINT = 0xFB7FU;
        USBx_OUTEP(i)->DOEPCTL &= ~USB_OTG_DOEPCTL_STALL;
        USBx_OUTEP(i)->DOEPCTL |= USB_OTG_DOEPCTL_SNAK;
      }
      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->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))
    {
      (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 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))
    {
      /* Keep application checking the corresponding Iso IN endpoint
      causing the incomplete Interrupt */
      epnum = 0U;

#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))
    {
      /* Keep application checking the corresponding Iso OUT endpoint
      causing the incomplete Interrupt */
      epnum = 0U;

#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;
    }
  }
}
#endif /* defined (USB_OTG_FS) || defined (USB_OTG_HS) */

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  • 原文地址：https://blog.csdn.net/qq_42820594/article/details/126353530