There are more than one "peripheral" and more than one central. How can we eliminate the signal confusion?

[purgoufr]

First I register the address of the central device to the peripheral device. When I work with a single peripheral device and a single central device, I can send commands from the central device to the peripheral device. But when I have more than one peripheral device in the vicinity, I can not send commands to the peripheral device registered from the central device. I think the signals are mixed up. Because, as I said at first, I can send peripheral commands to the central device when the peripheral devices are turned off and there is only one peripheral device. I used connectable undirected advertising. Because;

• Peripheral device should be scannable and connectable
• I send commands both by phone and by keyfob.

That's why advertising packet type should not be directed advertising as I know. When I scan by phone, I can see and select peripheral devices. But with KeyFob I do not have such a chance.If KeyFob is used, I think that KeyFob's head is mixed because I can not make a selection if there are more than one peripheral.

I read this link: devzone.nordicsemi.com/.../

So, do you have any suggestions to scan and connect to the peripheral which I want with KeyFob?

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I share sniffer pictures for information.

[FormerMember]

If there are multiple devices with the same address, I would think that there could be some problems, which device is the correct receiver of a given packet..? Instead of filtering devices based on address, I would recommend to filer on for example device name or UUID.

[purgoufr]

I am now trying to add a whitelist to the Central device. Is it a right move for you?

[FormerMember]

A central can choose which device it wants to send a connect request to. You would need a way to make sure the central connects to the right device, a way to distinguish the devices. An option is to connect to a device based on device name/uuid and RSSI.

[purgoufr]

There is no problem connecting to the correct device. I can connect and send command freely. There is no problem, until the broadcast of other devices scrambles the central device's head. My aim is after first register peer address of central device to the peripheral device,Even if there are more than one peripheral around, I want to continuing send command without signal confusion.

[FormerMember]

When a central and peripheral are connected, it should not be any problem to have a lot of advertisers nearby. Advertisers/broadcasters use different channels.