FreeRTOS上面可以枚举USB设备, 然后uclinux内核出现
dwc 2.0 Unable to clear enable on channel 0
dwc 2.0 Unable to clear enable on channel 1
dwc 2.0 Unable to clear enable on channel 2
dwc 2.0 Unable to clear enable on channel 3
dwc 2.0 Unable to clear enable on channel 4
dwc 2.0 Unable to clear enable on channel 5
dwc 2.0 Unable to clear enable on channel 6
dwc 2.0 Unable to clear enable on channel 7