Using
- RFDuino [Nordic nRF51288 chip] hardware
- Softdevice 110 v. 521
- Keil uVision5
See this video: https://www.youtube.com/watch?v=FMdcDRUT45g
The following depicts the measurement service with the two characteristics:
The Value characteristic is only for "presentation": (Read and Notify)
The Config characteristic is for configuration: (Read & Write)
- How the value characteristic is presented (which fields are transmitted)
- To override specific fields, e.g. to set a new sampling freq or change the sequence number
We use the IEEE Float for the measurement value.. fx.
The temperature 25.50 celsius = (Exponent: -2, Mantissa: 2550)
This value is always present.