1CONFIG_USB_DEVICE_STACK_NEXT=y 2CONFIG_USBD_LOOPBACK_CLASS=y 3CONFIG_UDC_BUF_POOL_SIZE=4096 4 5CONFIG_LOG=y 6CONFIG_USBD_LOG_LEVEL_ERR=y 7CONFIG_UDC_DRIVER_LOG_LEVEL_ERR=y 8CONFIG_USBD_LOOPBACK_LOG_LEVEL_ERR=y 9 10CONFIG_SAMPLE_USBD_PID=0x0009 11CONFIG_SAMPLE_USBD_PRODUCT="Zephyr testusb sample" 12