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;
- }
| 
楼主
