Android Question Error writing Bluetooth Manager_DataAvailable

[Nicolás Cieri]

Please help, always that i want to write in "b4a" i get the same error...

at anywheresoftware.b4a.objects.BleManager2.WriteData(BleManager2.java:377)

In b4i everything Works Good.

Any idea? Thanks

#IF B4A
Sub Manager_DataAvailable (Service As String, Characteristics As Map)
    Try
        'ActivityIndicator2.Visible = False
        'clv.Add(CreateServiceItem(Service), "")
        Dim Chrt As String=""
        For Each id As String In Characteristics.Keys
            LogColor(id,Colors.Magenta)
            'clv.Add(CreateCharacteristicItem(id, Characteristics.Get(id)), "")
            Log( bc.HexFromBytes( Characteristics.Get(id) ) )
            If Chrt="" Then    Chrt=id
        Next
        Dim fm As String = ""
        
        'fm = StringToHex("Hola")
        
        fm = fm & "0D0A"
        Dim Data() As Byte = bc.HexToBytes(fm)
        
        manager.WriteData(Service,Chrt,Data)   
    
        'Sleep(1000)
        
        manager.Disconnect
        manager.StopScan
        bluetoothBtn.Enabled=True
    Catch
        Log(LastException)
        manager.Disconnect
    End Try
End Sub

#End If

 

[Nicolás Cieri]

java.lang.RuntimeException: Error writing data to: 00002a00-0000-1000-8000-00805f9b34fb

 

[Nicolás Cieri]

Please look the attached image.

 

[Erel]

1. Manager.WriteData is asynchronous. Call it and Wait For Manager_WriteComplete (Characteristic As String, Status As Int)
2. Check the data length. It should be short. 20 bytes or less.

 

[Nicolás Cieri]

Ok, my data is 56 bytes (maybe is the reason)... how can i send it??

 

[Nicolás Cieri]

I have tried with a data less than 20, I tried with 5 bytes to test and I get the same error.

at anywheresoftware.b4a.objects.BleManager2.WriteData(BleManager2.java:377)

 

[Nicolás Cieri]

Ready Erel, thank you very much I have it solved. You were right, I sent it in parts and it already Works very well.