All Questions
Tagged with android-ble rxandroidble
22
questions
3
votes
3
answers
25k
views
How to correctly use UUID.fromString method?
I am trying to read/write these ble characteristics:
Right now, I'm trying to read AA01*
I am using this library to do it.
Here's my code:
private void connectToSensorTag(RxBleDevice rxBleDevice) {...
- 6,483
3
votes
2
answers
576
views
How do I effectively read temperature from two BLE devices at the same time?
First of all, I am using RxAndroidBLE library to manage my BLE connections.
I have two SensorTag devices and I want to read temperature from both at the same time. For example, I'd like to read the ...
- 6,483
2
votes
1
answer
587
views
RxAndroidBle WRITE_TYPE_DEFAULT or WRITE_TYPE_NO_RESPONSE
I was wondering which strategy the RxAndroidBle library uses regarding write acknowledgements: WRITE_TYPE_DEFAULT or WRITE_TYPE_NO_RESPONSE?
Furthermore, should I wish to set (or query) this setting, ...
- 767
2
votes
2
answers
1k
views
Logging scanResult in Polidea - RxAndroidBle Scanning
I am trying to use the RxAndroidBle lib (https://github.com/Polidea/RxAndroidBle). I want the app the start and scan for BLE devices. I want to print the found devices in the LogCat. How can I do this?...
- 565
2
votes
0
answers
592
views
BLE different MTU for different implementations
I have tried different implementations of BLE connection on Android. One with RxAndroidBle and another one with simple Android API. I used RxAndroidBle example app for testing.
I connect to the same ...
- 125
1
vote
5
answers
2k
views
BLE Device dissonect after receive Notifications (BLEGattException Status = 0x8)
My BLE server permanently measures a sensor value and sends a notification with 20 byte user data after each measurement. The goal is to generate as much throughput as possible.
On the client side, ...
- 11
1
vote
2
answers
1k
views
BleGattException when writing to a particular characteristic
Writing to a specific characteristic crashes the application and throws the following exception:
Caused by: BleGattException{status=8, bleGattOperation=BleGattOperation{description='...
- 3,075
1
vote
1
answer
2k
views
How do I format a byte array to be sent to a characteristic on a BLE device?
I connect to my device and attempt to write to its characteristic:
scanSubscription = rxBleClient.scanBleDevices(
ScanSettings.Builder()
// .setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY) // ...
- 5,617
1
vote
1
answer
1k
views
RxAndroidBle - How to disconnect all connected devices?
I am using awesome rxandroidble library for BLE control.
I keep connection between activities.
Before I start scanning, I want to disconnect all connected devices first.
Sometimes It is not working ...
- 2,742
1
vote
2
answers
1k
views
How to disable a notification with rxandroidble?
I'm currently trying to use rxandroidble in order to replace the native BLE API of Android of one of our app.
How to disable a notification? I'm able to enable it with the sample code, this one:
...
- 175
1
vote
2
answers
756
views
Emit an item one at a time, interact with it until a condition is met, then continue for next item
I have a list of BLE devices, and am using RxJava to interact with them. I need to emit an item from the list, write a characteristic to it repeatedly until X happens, and then proceed to the next ...
- 3,075
1
vote
1
answer
80
views
Determine Characteristic Notfication emission count by first emission
I am currently implementing a protocol for a Bluetooth device and i am using the RxAndroidBle Library (version 1.4.3).
I have to request data from the device by writing to characteristic and then ...
- 147
1
vote
0
answers
581
views
OnErrorNotImplementedException somehow still being called with included error handling
Im performing a write to a BLE characteristic, where with these specific devices certain characteristics are not writeable if the peripheral is still locked.
I'd like to simply provide a visual ...
- 3,075
0
votes
1
answer
753
views
How can I write to a BLE GATT characteristic using RxAndroidBle in Kotlin?
I am unable to use the sample code to write to a GATT characteristic over BLE. I'm using the following code from Polidea's examples available here: https://github.com/Polidea/RxAndroidBle
Code:
...
- 5,617
0
votes
1
answer
132
views
Application is not able to capture each and every scan responses from the ble device
I am developing a BLE android application where I have used RxAndroidBLe for BLE communication.
Everything working fine except one issue that the application is not receiving every scan response ...
- 636
0
votes
1
answer
910
views
Android BLE callback OnWriteCallback stops after few seconds
I am trying to write next packet synchronously based on the OnCharacteristicWrite call back condition to achieve a maximum throughput. But for some reason it stops triggering OnCharacteristicWrite ...
0
votes
1
answer
2k
views
Android BLE is NOT connecting again after BLE device timeout [Using RxAndroidBle ]
I am working on Android BLE using RxAndroidBle library. The BLE device has a timeout of 5 min if there is no interaction. i.e. The device will disconnect automatically if there is no read/write ...
- 599
0
votes
1
answer
1k
views
Write BLE gatt characteristic on Android — error status 255
Experimenting with sample kotlin program, trying to read/write BLE device with channels from 0-7
When reading it gives me value like this: (0x06)
onCharacteristicRead(), status=0, value=[uuid='...
0
votes
0
answers
178
views
Background Service Android Using RxAndroidBle
When I connect, write, and notify using backgorund service, connection running well but when I closed the application connection between service and BLE device lost. Can I still connect to device ...
0
votes
0
answers
72
views
Write to device characteristic in order to "authenticate", Kotlin
I'm very new to RxAndroidBle and RxJava or RxKotlin.
I have a task somehow similar to this one, How to receive all notifications in RxAndroidBle
I need to wirte to a characteristic in order to "...
- 21
0
votes
1
answer
154
views
RxAndroidBle with java 7
I am trying to use RxAndroidBle to scan for devices. All the examples I found seem to use java lambda expression. Do I need java 8 with android studio to use the RxAndroidBle library? How can I run ...
- 565
0
votes
1
answer
371
views
Android BLE iBeacon advertisement packet larger than expected
I'm attempting to get an estimated range to a BLE device, given the devices RSSI and calibrated transmission power.
The calibrated txPower is supposedly emitted as the last byte in the peripherals ...
- 3,075