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I am building an i586 Linux application component that utilizes the Bluez stack to operate as a GATT client. The application currently scans/parses LE advertisements, creates an L2CAP channel to the target peripheral (CID 4), and writes a specified value to the CCC (in this case handle 0x002b) to enable notifications.
The notifications I receive (from WICED Smart Sensor Tag red keyfob device running firmware version 1.3) after writing to the CCC are formatted as a string of paired hex chars (which I assume are bytes) from handle 0x002a.
1) 0b ff ff a8 ff 0a 00 85 0a b1 02 4e 1c 90 0a cd fb 5e fa
2) 34 ea 00 cc 24 01 01
Which I am reading into an uint_8 array as (if I am not making a mistake converting):
1) 11 255 255 168 255 10 0 133 10 177 2 78 28 144 10 205 251 94 250
2) 52 234 0 204 36 1 1
Where can I find details on how to convert these values into meaningful sensor readings? When pairing with the tag on an Android/iOS device, for instance I get a floating point number for temperature, some gauge widgets for accel/gyro, etc. I can consult the datasheets for each specific sensor device, but I am unclear on even which values are associated with which sensor, or if header/length values may also be present.
Thanks for your help,