/* USB Interrupt service routine. 
This function serves as the USB interrupt service routine. */
void USB_OTG1_IRQHandler(void)
/* USB Interrupt service routine. 
This function serves as the USB interrupt service routine. */
void USB_OTG1_IRQHandler(void)
{
    rt_interrupt_enter();
    USB_DeviceEhciIsrFunction(ehci0_handle);
    rt_interrupt_leave();
}