wb-mcu-fw-updater update-fw /dev/ttyRS485-1 -a31
https://pikabu.ru/story/kak_podklyuchit_vtoroy_mqtt_broker_k_home_assistant_ili_mostovoebridgesoedineniya_mqtt_brokerovmosquitto_8015021
https://espdomofon.ru/umnyy-domofon-versiya-modbus-rs485/
https://github.com/wirenboard/wb-mqtt-serial/tree/master
https://wirenboard.com/wiki/index.php/MQTT