Flutter blue plus connection state listener
I have an app that uses flutter_blue_plus and I want to add a listener to the connection state of the device. As soon as the device loose connection I want to show a popup anywhere inside my app to inform…
Flutter – Bluetooth does not work when I lock the device's screen
When I lock the screen, bluetooth does not receive data, but it still scans. I use flutter_blue_plus 1.32.4 and flutter_background_service 5.0.5. <uses-permission android:name="android.permission.BLUETOOTH_SCAN" android:usesPermissionFlags="neverForLocation" /> <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" /> <!-- legacy for Android 11 or lower --> <uses-permission android:name="android.permission.BLUETOOTH" android:maxSdkVersion="30" />…
HC-05 module with flutter gives PlatformException(connect_error, read failed, socket might closed or timeout, read ret: -1)
I'm using flutter for my mobile application. I want to connect my mobile app with Arduino using HC-05 module. My flutter code (a small piece of code out of a big code): class HomeLayout extends StatefulWidget { const HomeLayout({super.key}); @override…
Ubuntu – How to deal with BlueZ bluetooth instability?
Background My team has been trying to implement a bluetooth LE 'api' for a while now. We decided on BLE over legacy Bluetooth due to iOS (one of our client device types) blocking legacy BT for anyone not on their…
React native – Android Not building due to permission error in manifest
Kind Stack-overflowers, I am attempting to create an expo react native module in order to use Bluetooth, However I am experiencing a strange issue Here is the error: Missing permissions required by intent BluetoothAdapter.ACTION_REQUEST_ENABLE: android.permission.BLUETOOTH_CONNECT The error occurs around this…
Flutter – How to obtain Bluetooth LE Appearance on Android using ScanRecord.getAdvertisingDataMap or is it possible that way?
I'm trying to obtain Appearance data of Bluetooth Low Energy devices in Android (in a Flutter app but seemingly iOS doesn't provide appearance, so I'm focusing on Android). ScanRecord has a https://developer.android.com/reference/android/bluetooth/le/ScanRecord#getAdvertisingDataMap() function, however what can I use to index…
React native – Android requesting location instead of bluetooth permissions
I am debugging a react native app that absolutely needs bluetooth permissions, however at the moment in android the bluetooth permissions are returning unavailable. I am requesting permissions in my AndroidManifest.xml like this: <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" /> <uses-permission…
Catching all BLE advertisement telegrams with pydbus
I am having acceleration sensors provided by a business partner which are sending about 20 BLE advertisements per second when being triggered. I installed Bluez 5.66 and I am running a pydbus app which is dervied from this post Active…
React native – Printing on Bluetooth (Version 3.0) iOS using react-native-thermal-receipt-printer
I am facing an issue that the Bluetooth Printer (Epson TM-20, Bluetooth 3.0) is not getting recognize by a react native library (https://github.com/HeligPfleigh/react-native-thermal-receipt-printer). Printer gets connected by from the Bluetooth settings (of the iPhone). Printer gets connected from Epson TM…
Visual Studio Code – [C#]How can I read Bluetooth Classic RSSI without connection?
Is there any way to read Bluetooth Classic RSSI in Microsoft Bluetooth Stack? I'm looking for the solution how I can read Bluetooth Classic RSSI without connection. I tried some ways: inthehand, WinApi, or other console programs. And I looked…