When smartphone range is shorter than a peripheral(nRF5X), is there any way to receive an advertisement from the peripheral?

[benevbright]

Hi, I made a device with using NRF51822, named 'allb' the wearable device for babies. http://myallb.com

We're planning to make a new version of it with using nRF52840, which has a wider range and Bluetooth 5.0. But my question is that many smartphones do not have a chip that has long range. So, the range of nRF52840 would be much longer than the smartphones.

In this situation that they can't communicate each other, the connection between them will be disconnected. Question, I want to make the smartphone to receive a data even in that situation(Opposite is not necessary).

How can I achieve that? Sending Advertisement can be possible in this scenario? Is the advertising also needed a connection for both sides? (Then, it won't help to resolve my problem)

Or is there any other way?

Thanks.

[ta2]

Correct. If you don't need a response from the smartphone, then all you need is an output signal from your device that is strong enough to reach the smartphone. It doesn't matter whether or not the smartphone has enough power output to send something to your device.

In fact, that's why I suggested BLE_GAP_ADV_TYPE_ADV_NONCONN_IND. (Do I have that symbol typed in correctly? It looks odd.)

Anyway, NONCONN is advising any device that receives the advertising packet that there is no point in sending anything to your device. In NONCONN the receiver in your device is probably turned off to save power.

[benevbright]

Thank for your help. I will try it!