HR with pairing over NFC

RE: HR with pairing over NFC

Petter Myhre — Wed, 02 Mar 2016 15:41:28 GMT

Sorry for the late reply. It seems to me that you have gotten the example to work as it should. We don't have an example with the functionality you describe. The pairing is done with the android system. For an app to connect you automatically, I guess you would use NFC to open the app and send for example the device address to the app. Then the app can connect to device. I think this would be a nice example to have in our SDK, and taken this to the developers.

RE: HR with pairing over NFC

ff — Fri, 12 Feb 2016 15:19:17 GMT

I forgot to mention : I can connect to the HR device through the Toolbox manually. What i would like is that the phone pairs and then connects to the device automatically.

RE: HR with pairing over NFC

ff — Fri, 12 Feb 2016 14:39:45 GMT

I managed to get the two devices paired (bonded) after reprogramming the SD132 and the NFC_HR_app. I know have the BL that turns on the smartphone, then pairs with the Nordic and then BL turns off. However I cannot connect to the device. Here is the advertissement from the nordic

RE: HR with pairing over NFC

Petter Myhre — Fri, 12 Feb 2016 08:54:45 GMT

Strange. The smart phone should connect, then pair, then disconnect. I tested this with have Bluetooth OFF initially. I get the same behavior as you, but the HRM device appears in Bluetooth settings as a paired (bonded) device. Could you sniff the BLE connection so we can see what is actually happening? You can use the nRF Sniffer.

RE: HR with pairing over NFC

ff — Thu, 11 Feb 2016 16:24:58 GMT

Unfortunatly, the devices are not paired (the nordic_hrm does not appear in the BL paired device list). I tried on several phones. I tried to enable advertising under BLE_GAP_EVT_DISCONNECTED but this case is never executed since theres no disconnection. Moreover, I thought that the devices would actually pair and then connect, automatically : "3.Confirm pairing with 'Nordic_HRM' in a pop-up window on the smartphone/tablet and observe that the BSP_INDICATE_CONNECTED state is indicated"

Thank you for your help

RE: HR with pairing over NFC

Petter Myhre — Thu, 11 Feb 2016 15:44:45 GMT

I believe the devices are paired, but the smart phone will disconnect, and on disconnect the nRF52 will not restart advertising.

If you just add some code to start advertising in the BLE_GAP_EVT_DISCONNECTED event in on_ble_evt() you should be able to connect, with for example nRF Toolbox.

RE: HR with pairing over NFC

ff — Thu, 11 Feb 2016 10:00:44 GMT

When i use Just works, android asks for a pairing confirmation with "the Bluetooth device" ( BSP_INDICATE_ADVERTISING on the nRF52) , Bluetooth turns on and android tries to pair the HRM with the phone. After a couple of seconds, Bluetooth is turned off on the phone. I don't have the BSP_INDICATE_CONNECTED and advertising is off. I can re-touch the NFC tag with the phone : same thing happens. I think that the NDEF data are correct : I have the Handover Select record, the MIME type (.../vnd.bluetooth.le.oob) and Bluetooth SSP record too (/vnd.bluetooth.ep.oob).

I have the Toolbox app. However, the pairing is handled by android. The app is necessary when it comes to HR data, isn't it ?

RE: HR with pairing over NFC

Petter Myhre — Wed, 10 Feb 2016 13:04:29 GMT

What happens when you use just works? Are you using the nRF Toolbox app on the smart phone?