Is it possible to establish a ble connection while not advertising?

[Coderprofile]

Hello, I developed a Ble application with nrf52832.
I currently have some services and characteristics.

I have mobile applications and I connect to my device and transfer data. I do not do pairing.

My device consumes 0.5mA energy when not doing Ble Advertising.
It consumes 0.9mA energy during advertising.

Currently, my device is constantly broadcasting in the routine and I connect from the mobile application when needed.

This is not something I want in terms of power consumption.

Here is what I want to do;

I want to get rid of the problem of continuous advertising after establishing a correct connection from my phone application once during the installation of the device. Is there a way to connect directly without advertising?

In summary, does pairing solve this problem?
I could not decide which area I should research.
In other words, does pairing in Ble mode eliminate the need for advertising?

My goal is to halve the power consumption in standby mode.

[Joakim Jakobsen]

Hi. 

Unfortunately no. You can not connect without having your device advertise first. 

Br, 
Joakim

[Coderprofile]

Hi, Thank you,

So is it useful to make a pairing here?
Can we reduce power consumption when we advertise when there is pairing?

[Joakim Jakobsen]

Hi. 

The power consumption while advertising will not improve even if the devices are paired/bonded. 

Is there a reason that you can't stay connected with the device? So that you don't have to advertise indefinite. 

If you want to reduce the power consumption you could try to find a solution where the peripheral only starts advertising when you need to connect. 

Br, 
Joakim

[Coderprofile]

Currently, I do this with a button, but encouraging to press a button when the mobile application is opened is not a very good option for the user experience.

I was actually researching to see if I could find a better method.

Thank you for your valuable information. 

[Joakim Jakobsen]

I understand. 

I guess that is the case with several products though. That the user have to physically interact with the device in order to connect. 

You could set up a timer to start/stop advertising, but I assume that it would be hard to time when to start/stop the advertising if you don't know exactly when the device needs to be available to connect. 

Br, 
Joakim

[Coderprofile]

Yes, unfortunately, we don't know when it will be connected. Thank you for your helps.

[Joakim Jakobsen]

Happy to help.

You are welcome to create a new ticket if you have any further questions. 

Br, 
Joakim