The Generic Attribute Profile (GATT) defines the way that two Bluetooth Low Energy (BTLE) devices transfer data back and forth using concepts called Services and Characteristics.
Questions tagged [bluetooth-gatt]
459 questions
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BLE readCharacteristics always return false, or getvalue is null
I'm trying to use BLE in Android with a deivice that has fields : battery (RO), status (RO), intensity (R/W).
I followed some tutorials about setting up the Gatt with the device.
I Use the following code :
public void…
Aeldred
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Receiving onclientconnectionstate() - status=133 on custom Android BLE app that uses NUS service
I am receiving the above error on Android BLE app while connecting to my pca10040 based board, and I developed this app with nRF Toolbox as a reference.
I am testing this on multiple Android versions and devices, out of which I dont face any problem…
Vivek kumar
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BluetoothGatt api is not pairing with ibeacon in Marshmallow
I'm trying to programmatically pair with Ble iBeacon using BluetoothGatt API in android.I can able to pair with Ble iBeacon up to lollipop.But i cannot pair in Marshmallow(My testing device is oneplus 3).I'm using altbeacon library for beacon…
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BluetoothGattCallback's onCharacteristicChanged not triggered on Android 7.1.1
When communicating with my BLE device onCharacteristicChanged is trigged as expected for all versions of android prior to Android N. The issue is seen only on Android N.
For Android N onCharacteristicChanged is never triggered. Is there something…
Viral Patel
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1 answer
Bluetooth Low Energy in Python
I'm trying to communicate with other devices using Bluetooth low energy. By communicate i mean sending short messages that will be displayed on that devices that are listening in the area I am in. I'm using Bleak Python library.
Here is the example…
Szymon Budziak
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1 answer
Flutter acquire data from BLE
Hi I'm trying to get some measurement data from a ble decice and display it in my flutter app. I'm also using flutter_reactive_ble
I have two characteristics, one for reading and one for writing. I subscribe an event listener to the…
we_mor
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Android Bluetooth Server
Checked so far : this stack post, this one and official docs
I am not really familiarised with the Bluetooth api, yet I couldn't find something to clarify based on my need.
What I am trying to achieve is: Using my android device (as server in this…
Ionut J. Bejan
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Is there an authentication in the Bluetooth BLE standard? (reverse engineering trouble)
In short
When I connect to a BLE device with an unofficial app/program, GATT commands are not executed by the device.
Does the app need to run some king of authentication with the device? (a Bulb)
My reverse engineering story
I am trying to…
albinou
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