I currently develop an application (Android) that uses some BLE devices to capture health data. I have a blood glucose meter which uses the ISO/IEEE 11073-10417 norm to communicate with the smartphone via BLE.
While other BLE devices work with 16byte hexadecimal strings that are sent from smartphone to device and back (using a CRC-checksum-byte at the end) the documentation of this IEEE standard doesn't provide me with information regarding this. If anyone had a suggestion how to start working on that I would be very thankful as I don't know how long it will take me to find out how this stuff works.
One of the Antidote developers here. You can check for the Antidote example for Android, or take a look in HDPy (just search for HDPy GitHub in Google) for some simple examples of IEEE 11073 parsing.