GD32F1x0: USB/GD32_USB_Device_Driver/src/usb_int.c Source File

GD32F1x0

 
 /* Includes ------------------------------------------------------------------*/
 #include "usb_int.h"
 
 extern uint32_t InterruptMask;
 extern USB_CORE_HANDLE USB_Device_dev;
 extern USB_INTHandler_TypeDef *USB_INT_fops;
 
 #ifdef LPM_ENABLED
 __IO uint32_t L1_remote_wakeup = 0;
 __IO uint32_t BESL = 0;
 __IO uint16_t LPM_Istr = 0;
 #endif
 
 void USB_Ifr (void)
 {
  __IO uint16_t Ifr = 0; 
  __IO uint16_t Ctlr = 0;
 
  Ifr = _GetIFR();
 
 #ifdef LPM_ENABLED 
  LPM_Istr = GetLPM_ISTR(); 
 #endif
 
  if (Ifr & IFR_STIF & InterruptMask)
  {
  /* The endpoint successful transfer interrupt service */
  USB_INT_fops->LP_ST(&USB_Device_dev);
  }
 
  if (Ifr & IFR_RSTIF & InterruptMask)
  {
  /* Clear reset interrupt flag in IFR */
  _SetIFR((uint16_t)CLR_RSTIF);
 
  /* USB reset interrupt handle */
  USB_INT_fops->Reset(&USB_Device_dev);
  }
 
 #if (IER_MASK & IFR_PMOUIF)
  if (Ifr & IFR_PMOUIF & InterruptMask)
  {
  /* Clear packet memory overrun/underrun interrupt flag in IFR */
  _SetIFR((uint16_t)CLR_PMOUIF);
 
  /* USB packet memory overrun/underrun interrrupt handle */
  USB_INT_fops->PMOU(&USB_Device_dev);
  }
 #endif
 
 #if (IER_MASK & IFR_ERRIF)
  if (Ifr & IFR_ERRIF & InterruptMask)
  {
  /* Clear error interrupt flag in IFR */
  _SetIFR((uint16_t)CLR_ERRIF);
 
  /* USB error interrupt handle */
  USB_INT_fops->Error(&USB_Device_dev);
  }
 #endif
 
 #if (IER_MASK & IFR_WKUPIF)
  if (Ifr & IFR_WKUPIF & InterruptMask)
  {
  /* Clear wakeup interrupt flag in IFR */
  _SetIFR((uint16_t)CLR_WKUPIF);
 
  /* USB wakeup interrupt handle */
  USB_INT_fops->WakeUp(&USB_Device_dev);
 
 #ifdef LPM_ENABLED
  /* clear L1 remote wakeup flag */
  L1_remote_wakeup = 0;
 #endif
  }
 #endif
 
 #if (IER_MASK & IFR_SPSIF)
  if (Ifr & IFR_SPSIF & InterruptMask)
  {
  if(!(_GetCTLR() & CTLR_RSREQ))
  {
  /* Process library core layer suspend routine*/
  USB_INT_fops->Suspend(&USB_Device_dev);
 
  /* Clear of suspend interrupt flag bit must be done after setting of CTLR_SETSPS */
  _SetIFR((uint16_t)CLR_SPSIF);
  }
  }
 #endif
 
 #if (IER_MASK & IFR_SOFIF)
  if (Ifr & IFR_SOFIF & InterruptMask)
  {
  /* clear SOF interrupt flag in IFR */
  _SetIFR((uint16_t)CLR_SOFIF);
 
  /* USB SOF interrupt handle */
  USB_INT_fops->SOF(&USB_Device_dev);
  }
 
  if (Ifr & IFR_ESOFIF & InterruptMask)
  {
  /* clear ESOF interrupt flag in IFR */
  _SetIFR((uint16_t)CLR_ESOFIF);
 
  /* USB ESOF interrupt handle */
  USB_INT_fops->ESOF(&USB_Device_dev);
  }
 #endif
 
 #ifdef LPM_ENABLED
  if (LPM_Istr & _GetLPM_CNTR())
  {
  /* Clear L1 ST flag in LPM ISTR */
  _SetLPM_ISTR(LPM_CLR_STIF);
 
  /* Read BESL field from subendpoint0 register which coressponds to HIRD parameter in LPM spec */
  BESL = (_GetSUBEP0R() & ATTR_HIRD) >> 4;
 
  /* Read BREMOTEWAKE bit from subendpoint0 register which corresponding to bRemoteWake bit in LPM request */
  L1_remote_wakeup = (_GetSUBEP0R() & ATTR_BREMOTEWAKE) >> 8;
 
  /* Process usb device core layer suspend routine */
  USB_INT_fops->Suspend(&USB_Device_dev); 
 
  /* Enter usb model in suspend and system in low power mode (DEEP_SLEEP mode) */
  Suspend();
  }
 #endif
 }
 
 /************************ (C) COPYRIGHT 2014 GIGADEVICE *****END OF FILE****/
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