How I can detect and get all the bluetooth adresses around my chip?

Question

Hi to everyone! 
 
 I have been looking for a way to get all the bluetooth adresses which are active around my chip (I have a nRF52832). 
 
 I know I can program my device as central and detect peripheral devices around it. But I also want to detect bluetooth devices that use Bluetooth versions lower than 4.0, I mean devices that does not use BLE (Bluetooth Low Energy). 
 
 I just want to detect them, not connect to them. Also, it would be great If I can get their bluetooth addresses and the Tx Power Level (or RSSI, Received Signal Strength Indicator). 
 
 Thanks in advance!

MartinBL · Accepted Answer

Hi, 
 Bluetooth versions below v4.0 (often referred to as Bluetooth Classic or Bluetooth BR/EDR) use different physical layers in their protocols. Different frequency bands, different modulation schemes, etc. So unfortunately it is impossible to detect these devices with a "pure" Bluetooth Low Energy device (You can get devices which are both Bluetooth Classic and LE compatible, but you won't find such devices in Nordic's portfolio of ICs).

How I can detect and get all the bluetooth adresses around my chip?

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