ESB and BLE . Which mode saves more energy ?

[Giang]

Hi all,

I make a key using nrf52832. It tranfer data to other device. I have 2 option for this. Using beacon (BLE) or Enhanced ShockBurst (ESB) . I want to optimize energy.

So which mode saves more energy ? 

Pls, answer my question !! Thank !!

[Stian Røed Hafskjold]

ESB is a very simple protocol, so this would be the most power efficient if you just want to wake up, send a burst of bytes, and go to sleep. Less processing involved. This requires the the central to be scanning all the time to receive the packets.

When you say beacon, do you mean advertising mode? Are you just sending a few bytes in an advertising packet or do you need to connect to the central to send more data?

[Giang]

yes, beacon mean I just sending advertising packet, not connect.

[Stian Røed Hafskjold]

Ok, so how much data do you want to send?