Search a specific BLE peripheral device

[Frederic]

Hello,

we have developed a custom BLE peripheral device. All peripheral devices have the same name. If we want to indetify a specific peripheral device with a smartphone APP, we use the manufacturer data during advertising to set a Flag, if the user press a button on the pheripheral device. After the smartphone find the specific peripheral device we perform a bonding and in addition the smartphone save the MAC Address from the periheral device, to ensure that the Smartphone only try to connect to this device. After the bonding is performed the peripheral allows only devices from the whitelist. Is this the right way to indentify a specific peripheral device and ensure that the smartphone always reconnect to the same device?

[Stian Røed Hafskjold]

Sound like you are on the right path here. You push a button to set a flag in order to know which one to connect to, and then put the MAC in whitelist.

[NG]

Hi, that's exactly what we are trying to do. A button pushed on the device will change the "device name" in the advertising string. However, while I do:

    err_code = sd_ble_gap_device_name_set(&sec_mode,(const uint8_t*)DEVICE_NAME_1,strlen(DEVICE_NAME_1));
    APP_ERROR_CHECK(err_code);

    err_code = ble_advdata_set(&advdata, NULL);
    APP_ERROR_CHECK(err_code);

I can't see the device name change (using BLE scanners: LightBlue, as well as Nordic's nfrConnect), until I actually connect to the device - which defeats the whole purpose. I want to see the advertising string change after a button press.

[endnode]

Well is Device Name present as AD element in ADV or SCAN_RSP data? Actually even if so it doesn't guarantee anything on today's crappy phones... welcome to real life;)