Reconnecting with bonded device without the advertising process

[Raghu GS]

Hi everyone,

We are making a BLE peripheral that measures some data and keeps it ready for the mobile phone to connect & poll the data. The data should be private and available only to the bonded phone. Upon powering on for the first time, device will be advertising and visible to anyone. The Master control panel then connects & bonds with the device. After this, the device is whitelisted only for the bonded master control panel. Problem is, when the connection breaks, in order to reconnect with the device again through the master control panel, we have to start advertising from the device which will eat up a lot of battery.

Is there any way for the master control panel to connect with a bonded device without the need for the device to advertise?

Or is there any other technique which will enable the master to try & connect to the device without any knowledge of whether the device is within range or out of range?

[David Edwin]

If you do not want your device to advertise, then you must change the radio roles. I.e the peer i.e the phone should advertise and your device must be a master/central to scan and connect.

[Raghu GS]

Thanks David, But I use Master Control Panel to scan and communicate, where making Master Control Panel to advertise is not possible, As Petter Myhre mentioned that scanning would eat more power where it is not desirable for our application. Is there any other way to achieve Reconnecting to the peripheral?