BLEtoMQTT is an Android foreground service to provide a bidirectional bridge between BLE devices and an MQTT broker. A setup.json file defines MQTT parameters and BLE MAC addresses to scan for.

For each BLE device detected BLEtoMQTT will discover all exposed services and characteristics creating MQTT topics for each. Those characteristics which are writeable will automatically be 'subscribed' from the MQTT broker.

The author uses this application to connect remote custom ESP32 devices to his H