The nRF52 use the same Mac Address execute ADV mode is interference on some mobile

[CFF.K]

Hi, 

My product continues adv mode after connected with mobile until the amount of connection is full. By the way, there are 4 connect handle in my product.

My client use Samsung Note 5 bonding to my product (nRF52), and then this mobile continues to connect the all connect handle of nRF52 result in the other mobile can't connect with the nRF52.

I figure out the Samsung Note5 will continue to connect with the same mac address of nRF52 after the mobile scan the same mac address of the bond list. No matter the mobile already connect with nRF52.

How could I fix this condition? Because this problem leads to the other mobile can't connect with my product while Samsung Note 5 connects with my product.

[Amanda Hsieh]

Hi, 

I'm not exactly sure I understand the question.

• Is the Android system initiating multiple connections to the bonded nRF device? Or is he using an app to scan? 
• How does Samsung Note 5 connect to the nRF52? Did it use nRF Connect? If not, do you see the same situation if you use the nRF Connect?
• What is the SDK/SD used? 

-Amanda H.

[CFF.K]

Hi,

• Is the Android system initiating multiple connections to the bonded nRF device? Or is he using an app to scan?
  Ans: I'm not sure your question, this problem doesn't focus on the nRF device. I consider the mobile will connect all devices when the BLE device broadcasts the same mac address on ADV mode. And the mobile use system executes to scan, it doesn't use the APP to Scan.

• How does Samsung Note 5 connect to the nRF52? Did it use nRF Connect? If not, do you see the same situation if you use the nRF Connect?
  Ans: I use the Bluetooth of System to choose the device name of ADV to connect nRF52. And then the mobile will bond with nRF52. This problem that mainly the nRF52 is the bond device. therefore, this none of nRF Connect. By the way, there is the HID service in the nRF52, so the mobile will auto bond procedure with the nRF52 device.

• What is the SDK/SD used?
  Ans: I use SDK 15.2.0, SD 6.1.0

[Amanda Hsieh]

Hi Ken, 

If you use the nRF Connect, will it have the same problem?

-Amanda H.

[CFF.K]

The same problem after I use the nRF Connect execute bonding.

If I don't use bonding that I just use the nRF Connect execute connect. It doesn't happen.

[Amanda Hsieh]

Hi Ken, 

Due to the Easter holiday in Norway we are missing a lot of key personnel, so I will have to give you a definite answer next week when everybody is back. 

-Amanda H.