1CONFIG_SHELL=y 2CONFIG_USB_DEVICE_STACK_NEXT=y 3CONFIG_USBD_SHELL=y 4CONFIG_USBD_LOOPBACK_CLASS=y 5CONFIG_UDC_BUF_POOL_SIZE=4096 6 7CONFIG_LOG=y 8CONFIG_USBD_LOG_LEVEL_WRN=y 9CONFIG_UDC_DRIVER_LOG_LEVEL_WRN=y 10
