stm32f7xx_hal_pcd.c

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/* Includes ------------------------------------------------------------------*/
#include "stm32f7xx_hal.h"

#ifdef HAL_PCD_MODULE_ENABLED

/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
#define PCD_MIN(a, b)  (((a) < (b)) ? (a) : (b))
#define PCD_MAX(a, b)  (((a) > (b)) ? (a) : (b))

/* Private functions prototypes ----------------------------------------------*/
static HAL_StatusTypeDef PCD_WriteEmptyTxFifo(PCD_HandleTypeDef *hpcd, uint32_t epnum);
/* Exported functions --------------------------------------------------------*/
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;
}

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;
}

__weak void HAL_PCD_MspInit(PCD_HandleTypeDef *hpcd)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpcd);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_PCD_MspInit could be implemented in the user file
   */
}

__weak void HAL_PCD_MspDeInit(PCD_HandleTypeDef *hpcd)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(hpcd);
  
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_PCD_MspDeInit could be implemented in the user file
   */
}

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;
}

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;
}

uint32_t EP1PktLen;

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 = NULL;
  uint32_t hclk = 200000000;
  
  /* 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;            
            }
            
            //YYYY
            if (epnum == 1)
            {
                EP1PktLen = hpcd->OUT_ep[epnum].xfer_count;
            }

            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);
          }
          /* Clear Status Phase Received interrupt */
          if(( epint & USB_OTG_DOEPINT_OTEPSPR) == USB_OTG_DOEPINT_OTEPSPR)
          {
            CLEAR_OUT_EP_INTR(epnum, USB_OTG_DOEPINT_OTEPSPR);
          }
        }
        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 | USB_OTG_DOEPMSK_OTEPSPRM);
        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 ;  
        
        /* The USBTRD is configured according to the tables below, depending on AHB frequency 
        used by application. In the low AHB frequency range it is used to stretch enough the USB response 
        time to IN tokens, the USB turnaround time, so to compensate for the longer AHB read access 
        latency to the Data FIFO */
        
        /* Get hclk frequency value */
        hclk = HAL_RCC_GetHCLKFreq();
        
        if((hclk >= 14200000)&&(hclk < 15000000))
        {
          /* hclk Clock Range between 14.2-15 MHz */
          hpcd->Instance->GUSBCFG |= (uint32_t)((0xF << 10) & USB_OTG_GUSBCFG_TRDT);
        }
        
        else if((hclk >= 15000000)&&(hclk < 16000000))
        {
          /* hclk Clock Range between 15-16 MHz */
          hpcd->Instance->GUSBCFG |= (uint32_t)((0xE << 10) & USB_OTG_GUSBCFG_TRDT);
        }
        
        else if((hclk >= 16000000)&&(hclk < 17200000))
        {
          /* hclk Clock Range between 16-17.2 MHz */
          hpcd->Instance->GUSBCFG |= (uint32_t)((0xD << 10) & USB_OTG_GUSBCFG_TRDT);
        }
        
        else if((hclk >= 17200000)&&(hclk < 18500000))
        {
          /* hclk Clock Range between 17.2-18.5 MHz */
          hpcd->Instance->GUSBCFG |= (uint32_t)((0xC << 10) & USB_OTG_GUSBCFG_TRDT);
        }
        
        else if((hclk >= 18500000)&&(hclk < 20000000))
        {
          /* hclk Clock Range between 18.5-20 MHz */
          hpcd->Instance->GUSBCFG |= (uint32_t)((0xB << 10) & USB_OTG_GUSBCFG_TRDT);
        }
        
        else if((hclk >= 20000000)&&(hclk < 21800000))
        {
          /* hclk Clock Range between 20-21.8 MHz */
          hpcd->Instance->GUSBCFG |= (uint32_t)((0xA << 10) & USB_OTG_GUSBCFG_TRDT);
        }
        
        else if((hclk >= 21800000)&&(hclk < 24000000))
        {
          /* hclk Clock Range between 21.8-24 MHz */
          hpcd->Instance->GUSBCFG |= (uint32_t)((0x9 << 10) & USB_OTG_GUSBCFG_TRDT);
        }
        
        else if((hclk >= 24000000)&&(hclk < 27700000))
        {
          /* hclk Clock Range between 24-27.7 MHz */
          hpcd->Instance->GUSBCFG |= (uint32_t)((0x8 << 10) & USB_OTG_GUSBCFG_TRDT);
        }
        
        else if((hclk >= 27700000)&&(hclk < 32000000))
        {
          /* hclk Clock Range between 27.7-32 MHz */
          hpcd->Instance->GUSBCFG |= (uint32_t)((0x7 << 10) & USB_OTG_GUSBCFG_TRDT);
        }
        
        else /* if(hclk >= 32000000) */
        {
          /* hclk Clock Range between 32-200 MHz */
          hpcd->Instance->GUSBCFG |= (uint32_t)((0x6 << 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;
    }
  }
}

 __weak void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
  /* 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
   */ 
}

 __weak void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
  /* 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
   */ 
}
 __weak void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd)
{
  /* 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
   */ 
}

 __weak void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
{
  /* 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
   */ 
}

 __weak void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
{
  /* 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
   */ 
}

 __weak void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd)
{
  /* 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
   */ 
}

 __weak void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
{
  /* 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
   */ 
}

 __weak void HAL_PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
  /* 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
   */ 
}

 __weak void HAL_PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
{
  /* 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
   */ 
}

 __weak void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd)
{
  /* 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
   */ 
}

 __weak void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd)
{
  /* 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_StatusTypeDef HAL_PCD_DevConnect(PCD_HandleTypeDef *hpcd)
{
  __HAL_LOCK(hpcd); 
  USB_DevConnect(hpcd->Instance);
  __HAL_UNLOCK(hpcd); 
  return HAL_OK;
}

HAL_StatusTypeDef HAL_PCD_DevDisconnect(PCD_HandleTypeDef *hpcd)
{
  __HAL_LOCK(hpcd); 
  USB_DevDisconnect(hpcd->Instance);
  __HAL_UNLOCK(hpcd); 
  return HAL_OK;
}

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;
}
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;
}


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;
}


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;
}

uint16_t HAL_PCD_EP_GetRxCount(PCD_HandleTypeDef *hpcd, uint8_t ep_addr)
{
  return hpcd->OUT_ep[ep_addr & 0x7F].xfer_count;
}
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;
}

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;
}

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;
}

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;
}

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 wakeup signaling */
    USBx_DEVICE->DCTL |= USB_OTG_DCTL_RWUSIG;
  }
  return HAL_OK;  
}

HAL_StatusTypeDef HAL_PCD_DeActivateRemoteWakeup(PCD_HandleTypeDef *hpcd)
{
  USB_OTG_GlobalTypeDef *USBx = hpcd->Instance;  
  
  /* De-activate Remote wakeup signaling */
   USBx_DEVICE->DCTL &= ~(USB_OTG_DCTL_RWUSIG);
  return HAL_OK;  
}
PCD_StateTypeDef HAL_PCD_GetState(PCD_HandleTypeDef *hpcd)
{
  return hpcd->State;
}
/* Private functions ---------------------------------------------------------*/
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 > 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 > 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****/