Bluetooth modes and energy consumption

[ShenyongZ]

Hi,

i am working at the moment with 2 devices using the chip nRF52832. And i have to connect these 2 chip each other with a Bluetooth connection.

i have known that this chip can have severals Bluetooth connexion mode:

• advertiser -- observer
• central -- peripheral

Could you explain more about these mode?

And about the energy consumption, which mode consumes more energy? or which device (advertiser, observer, central, peripheral) consumes more energy?

Could I have an order of magnitude for each device?

thank you

[Fred]

Using Nordic's "Online Power Profiler" will give you a lot of the answers you're looking for. As for the details of BLE and the roles, there are perfectly good easy to understand online tutorials, both here on the Nordic forum as elsewhere (e.g. https://www.novelbits.io/).

[ShenyongZ]

the current consumption given in Nordic's "Online Power Profiler"  is the consumption of the peripheral to send/ receive the data or it is the consumption of the peripheral + the CPU consumption ? 

[haakonsh]

It's the total current consumption, without any other application running on the CPU but the SoftDevice.