1CONFIG_SHELL=y 2CONFIG_USB_DEVICE_STACK_NEXT=y 3CONFIG_CDC_ACM_SERIAL_INITIALIZE_AT_BOOT=n 4CONFIG_USBD_SHELL=y 5CONFIG_USBD_LOOPBACK_CLASS=y 6CONFIG_UDC_BUF_POOL_SIZE=4096 7 8CONFIG_LOG=y 9CONFIG_USBD_LOG_LEVEL_WRN=y 10CONFIG_UDC_DRIVER_LOG_LEVEL_WRN=y 11
