How can I retrieve the data from a bluetooth device?

Question

I have a bluetooth device, in particular a Heart Rate Measurement.

The bluetooth standard for these kind of device is the 180D 2A37.

This is the link: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml

I would like to get the measurements. How can I do?

At the moment, I am able to connect and pair with my device using the Bluetooth API ( BluetoothSocket )

Answer 1

First, follow the official documentation to setup blutooth API and get an instance of BluetoothSocket . This socket can be used to read and write bit data.

The chart you have mentioned explain the structure of 1 byte packets that the sensor uses. So, you can start reading bytes off the socket and de-code each byte using reference chart to get data.