I would like to program an app where I can read live data from an ODB2 ELM327 BLE connector. For this use the BluetoothLE plugin. I already get a connection, but I don’t know where and how to send my “AT” command to get live data.
- On which service and characteristic do I have to send the command?
- Do I need to send the command with write?
- What should the command look like (hexadecimal, etc)?