In few minutes you will be able to read and write to storage (in JSON format), read and send messages to an MQTT queue, connect to WiFi without hardcoding passwords and more... Arduino Bootstrapper ...
MQTT gateway for ESP8266 or ESP32 with bidirectional 433mhz/315mhz/868mhz, Infrared communications, BLE, Bluetooth, beacons detection, mi flora, mi jia, LYWSD02, LYWSD03MMC, Mi Scale, TPMS, BBQ ...