I downloaded the BLE beacon app S110 v7.1.0 to a nRF51-DK board. The current measurement pins were attached to a 10 Ohm resistor.
I observed the AC-coupled voltage at one pin of the resistor on the scope. I also observed the amplitude and frequency of the RF output. A screenshot of the scope is here .
The screenshot shows three transmission pulses at 0, 20 and 80 MHz from 2.4 GHz (centre frequency). The board draws current at every transmission.
My questions are
- Is it possible to transmit 1 pulse only (instead of 3) in order to save power?
- Can the interval be increased to say 1 second? (The current interval is 100 ms.)
I'd be helpful if anyone can point to the functions that set the frequencies and interval.