All Questions
Tagged with bluetooth-gatt kotlin
12
questions
0
votes
0
answers
43
views
BLE Peripheral disconnection after sending a command in some Android phones
I am working on an android project which works with a smart ring using bluetooth. The problem is app and ring are working fine 95% of the Android phones. But in 5% of the phones getting disconnection ...
2
votes
1
answer
186
views
Why do we get ERROR_GATT_WRITE_REQUEST_BUSY error while writing to characteristic?
I am building chat app on ble. I do not need queue as i will be writing sequentially. But sometimes i get this error. I tried to debug it, what i found is if i remove my Notify Characteristic then it ...
- 21
0
votes
0
answers
24
views
With Bluetooth LE GATT service, is processing Characteristics and Descriptors sequentially an acceptable way to go?
I'm writing a service that connects to a bluetooth LE device.
I am iterating through the various services looking for the ones I'm interested in.
At the moment I'm looking at battery services.
Some ...
- 3,192
0
votes
0
answers
178
views
Not able to read Bluetooth Characteristic in android app
I am trying to read a bluetooth characteristic (CPU temperature of Raspberry pi, cputemp). But when I my checking the permission using it.properties it's returning 18 and discoveredGatt....
- 1
1
vote
0
answers
237
views
getBondedDevices() is not returning paired bluetooth devices
I am trying to fetch paired devices using BluetoothAdapter like below.
fun getBondedDevices(){
if (!checkBluetoothPermission(mContext) &...
- 283
0
votes
1
answer
640
views
How to write characteristics for bluetooth gatt service for two channels without getting disconnected(state 133)?
I've a bluetooth gatt service and two channels to write
bluetoothGattService = gatt?.getService(UUID.fromString(ble_gatt_service_uuid))
mTxCharacteristic1 = bluetoothGattService.getCharacteristic(...
- 21
4
votes
1
answer
684
views
Issue with Scanning Specific BLE Devices
I am working on BLE and have to scan the BLE devices with specific udid.
Currently, All BLE supported devices comes as a scan result.
To avoid and scan only specific devices, what I have done is as ...
- 1,631
1
vote
0
answers
705
views
How to get notification using BLE, always getting Error
I am trying to get notification from Kotlin on React Native using BLE (Bluetooth Low Energy) connection.
Devices are connected each other and I am trying to send notification from Android device to ...
0
votes
0
answers
407
views
How to scan and connect to a bluetooth device in one fragment and read characteristics in another fragment?
I just started learning Android development with Kotlin and I am working on an app.
I also created an Arduino device with BLE that sends the current speed of my bike.
The app I am building has one ...
- 41
3
votes
1
answer
3k
views
Android BLE Gatt Server with multiple services - onCharacteristicWriteRequest() no char for handle
I am trying to build a BLE Gatt Server with multiple custom services and multiple characteristics.
To begin with I used the Google Example: https://github.com/androidthings/sample-bluetooth-le-...
- 71
5
votes
1
answer
899
views
Multiple BluetoothGattCharacteristic not being notified
I am working on a BLE device and am not able to get onCharacteristicChanged to ever be called. I have 8 BluetoothGattCharacteristic that I need to be subscribed to.
After I find the device ...
- 1,307
1
vote
1
answer
721
views
Android BluetoothDevice reading new data
I am an iOS developer building my first Android bluetooth app. In my app I have two classes, one main class that calls a second that is my BluetoothGattCallback.
After I scan for devices, I find the ...
- 1,307