How to access BLE GATT characteristics via BT Binding

Add-ons Bindings
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Hi @ all,
I’m new to this community and I have a question on Bluetooth with openhabian.

Sytem Info:
Raspberry PI 3b+
Openhabian v1.5
OpenHAB 2.5.7
Bluetooth Bindind 2.5.7

First of all, I managed to install the binding and neccessary stuff to get bluetooth working on the raspberry Pi.

I also can see my device within the INBOX of the Paper UI and add this thing to my server.
I can see wether the device is online or offline, but nothing else.
How can I access a custom BLE service within OpenHAB?

I saw some pictures where the Bluetoothbinding can be configured and Services and Characteristics can be configured in XML files.

But for me the only thing I can do is the following:

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My intention is to realise some sensors or a Weather station with for example an ESP32 module.
Since this module has BLE adapter available, it would be nice to transfer data via BLE characteristics. Therfore I would like to create a custom service “Sensor Data” with Characteristics “Temperature”, “Humidity” etc.

Is there any possibility to configure the Bluetooth binding in a way that you can read data from a BLE device via characteristics?
Or should I write some python scripts to get BLE data from my devices?

I would be happy if someone give some hints on that or an example on writing a config file for that.

2

I do not have experience with the bluetooth binding to answer your question but you may have a look to https://www.jaredwolff.com/get-started-with-bluetooth-low-energy/#! which might help to get an idea on how to do initial stuff with shell commands or from within python.

3

Hi Alex,

I’m not sure if you can access GATT(TOOL) directly with the Bluetooth binding. I’m using the Exec binding to get/set GATT characteristics through a shell script.

Also have a look at this solution with Python and MQTT

Hope this brings you further with what you want to achieve.