/**
* @brief USB_OTG_USBH_handle_rx_qlvl_ISR
* Handles the Rx Status Queue Level Interrupt
* @param pdev: Selected device
* @retval status
*/
#if defined ( __ICCARM__ ) /*!< IAR Compiler */
#pragma optimize = none
#endif /* __CC_ARM */
static uint32_t USB_OTG_USBH_handle_rx_qlvl_ISR (USB_OTG_CORE_HANDLE *pdev)
{
USB_OTG_GRXFSTS_TypeDef grxsts;
USB_OTG_GINTMSK_TypeDef intmsk;
USB_OTG_HCTSIZn_TypeDef hctsiz;
USB_OTG_HCCHAR_TypeDef hcchar;
__IO uint8_t channelnum =0;
uint32_t count;
/* Disable the Rx Status Queue Level interrupt */
intmsk.d32 = 0;
intmsk.b.rxstsqlvl = 1;
USB_OTG_MODIFY_REG32( &pdev->regs.GREGS->GINTMSK, intmsk.d32, 0);
grxsts.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GRXSTSP);
channelnum = grxsts.b.chnum;
hcchar.d32 = USB_OTG_READ_REG32(&pdev->regs.HC_REGS[channelnum]->HCCHAR);
switch (grxsts.b.pktsts)
{
case GRXSTS_PKTSTS_IN:
/* Read the data into the host buffer. */
#ifdef USE_HOST_MODE
if ((grxsts.b.bcnt > 0) && (pdev->host.hc[channelnum].xfer_buff != (void *)0))
{
USB_OTG_ReadPacket(pdev, pdev->host.hc[channelnum].xfer_buff, grxsts.b.bcnt);
/*manage multiple Xfer */
pdev->host.hc[grxsts.b.chnum].xfer_buff += grxsts.b.bcnt;
pdev->host.hc[grxsts.b.chnum].xfer_count += grxsts.b.bcnt;
count = pdev->host.hc[channelnum].xfer_count;
pdev->host.XferCnt[channelnum] = count;
hctsiz.d32 = USB_OTG_READ_REG32(&pdev->regs.HC_REGS[channelnum]->HCTSIZ);
if(hctsiz.b.pktcnt > 0)
{
/* re-activate the channel when more packets are expected */
hcchar.b.chen = 1;
hcchar.b.chdis = 0;
USB_OTG_WRITE_REG32(&pdev->regs.HC_REGS[channelnum]->HCCHAR, hcchar.d32);
}
}
#endif
break;
case GRXSTS_PKTSTS_IN_XFER_COMP:
case GRXSTS_PKTSTS_DATA_TOGGLE_ERR:
case GRXSTS_PKTSTS_CH_HALTED:
default:
break;
}
/* Enable the Rx Status Queue Level interrupt */
intmsk.b.rxstsqlvl = 1;
USB_OTG_MODIFY_REG32(&pdev->regs.GREGS->GINTMSK, 0, intmsk.d32);
return 1;
}
/**
* @brief DCD_HandleRxStatusQueueLevel_ISR
* Handles the Rx Status Queue Level Interrupt
* @param pdev: device instance
* @retval status
*/
static uint32_t DCD_HandleRxStatusQueueLevel_ISR(USB_OTG_CORE_HANDLE *pdev)
{
USB_OTG_GINTMSK_TypeDef int_mask;
USB_OTG_DRXSTS_TypeDef status;
USB_OTG_EP *ep;
/* Disable the Rx Status Queue Level interrupt */
int_mask.d32 = 0;
int_mask.b.rxstsqlvl = 1;
USB_OTG_MODIFY_REG32( &pdev->regs.GREGS->GINTMSK, int_mask.d32, 0);
/* Get the Status from the top of the FIFO */
status.d32 = USB_OTG_READ_REG32( &pdev->regs.GREGS->GRXSTSP );
ep = &pdev->dev.out_ep[status.b.epnum];
switch (status.b.pktsts)
{
case STS_GOUT_NAK:
break;
case STS_DATA_UPDT:
if (status.b.bcnt)
{
USB_OTG_ReadPacket(pdev,ep->xfer_buff, status.b.bcnt);
ep->xfer_buff += status.b.bcnt;
ep->xfer_count += status.b.bcnt;
}
break;
case STS_XFER_COMP:
break;
case STS_SETUP_COMP:
break;
case STS_SETUP_UPDT:
/* Copy the setup packet received in FIFO into the setup buffer in RAM */
USB_OTG_ReadPacket(pdev , pdev->dev.setup_packet, 8);
ep->xfer_count += status.b.bcnt;
break;
default:
break;
}
/* Enable the Rx Status Queue Level interrupt */
USB_OTG_MODIFY_REG32( &pdev->regs.GREGS->GINTMSK, 0, int_mask.d32);
return 1;
}
