connection between nRF52 and android bluetooth

RE: connection between nRF52 and android bluetooth

Parita — Thu, 27 Jun 2019 07:43:08 GMT

Thank you for your reply... i will go through it and check it.

RE: connection between nRF52 and android bluetooth

ovrebekk — Thu, 27 Jun 2019 07:40:01 GMT

Are you using the Nordic Android BLE library underneath, or doing everything on top of the core API's?

I would strongly suggest using our libraries, as they handle a lot of the busy work of setting up and accessing BLE devices in your application.

Best regards
Torbjørn

RE: connection between nRF52 and android bluetooth

Parita — Wed, 26 Jun 2019 10:12:54 GMT

I am initializing GATT service and before that i create a method which will discover the bluetooth devices/modules. After searching i can connect with the chosen bluetooth device from the list of other bluetooth devices/modules. My android phone and the bluetooth module is connected with each other, but while sending/writing data to the bluetooth module from android device, i am using BluetoothGattCallback. There i am getting android.bluetooth.BluetoothGattCharacteristic.setValue() as null refernce. The data is getting from android device but while sending to nRF52 it is not sending there.

RE: connection between nRF52 and android bluetooth

awneil — Wed, 26 Jun 2019 09:50:15 GMT

So what have you tried?

What results were you expecting?

What results are you actually getting?

What testing / investigation / debugging have you done to account for the difference(s) ?

Have you seen these tutorials on BLE Services & Characteristics:

https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy/posts/ble-services-a-beginners-tutorial

https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy/posts/ble-characteristics-a-beginners-tutorial

RE: connection between nRF52 and android bluetooth

Parita — Wed, 26 Jun 2019 09:34:14 GMT

Actually i am developing an application where i want to write data in the nRF52 module using android app. I am using writeCharacteristic() method. But i cannot able to write data on the module.Can you please help me

RE: connection between nRF52 and android bluetooth

awneil — Wed, 26 Jun 2019 09:18:40 GMT

[quote userid="2116" url="~/f/nordic-q-a/48964/connection-between-nrf52-and-android-bluetooth/194784"]Bluetooth 5 is backwards compatible with Bluetooth 4.0, so it should be possible for your nRF52 device running the BT 5 stack to connect to your phone and exchange data over a proprietary service[/quote]

Provided, of course, that your nRF code does not rely upon any BT 5 features!

RE: connection between nRF52 and android bluetooth

ovrebekk — Wed, 26 Jun 2019 08:19:02 GMT

Hi Parita

Bluetooth 5 is backwards compatible with Bluetooth 4.0, so it should be possible for your nRF52 device running the BT 5 stack to connect to your phone and exchange data over a proprietary service.

Have you tried to base your application on the Android-nRF-Blinky example?

It sets up the proprietary Blinky service, and allows the app to talk to an nRF52 device running the ble_app_blinky example from the nRF5 SDK.

Best regards
Torbjørn