如下，未完成的周期傳輸可能發生在任意通道上，為什麽程序卻操作通道0/**
* @brief USB_OTG_USBH_handle_IncompletePeriodicXfer_ISR
* Handles the incomplete Periodic transfer Interrupt
* @param pdev: Selected device
* @retval status
*/
static uint32_t USB_OTG_USBH_handle_IncompletePeriodicXfer_ISR (USB_OTG_CORE_HANDLE *pdev)
{
USB_OTG_GINTSTS_TypeDef gintsts;
USB_OTG_HCCHAR_TypeDef hcchar;
hcchar.d32 = USB_OTG_READ_REG32(&pdev->regs.HC_REGS[0]->HCCHAR);
hcchar.b.chen = 1;
hcchar.b.chdis = 1;
USB_OTG_WRITE_REG32(&pdev->regs.HC_REGS[0]->HCCHAR, hcchar.d32);
gintsts.d32 = 0;
/* Clear interrupt */
gintsts.b.incomplisoout = 1;
USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GINTSTS, gintsts.d32);
return 1;
}
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