Android Question Felusbserial not finding device

[saunwin]

Morning,

Can someone please help me out here - The code below will not find any usb devices. I'm trying to find an FTDI serial board, but even a pen drive is not detected.
Many thanks in advance.

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.
    Dim usbserial As felUsbSerial
    Dim manager As UsbManager
    Dim bc As ByteConverter

End Sub

Sub Globals
    'These global variables will be redeclared each time the activity is created.
    'These variables can only be accessed from this module. 

End Sub

Sub Activity_Create(FirstTime As Boolean)
     Activity.LoadLayout("SLR_capture1")
     Activity.AddMenuItem("Exit", "mnuexit")
    Activity.AddMenuItem("Connect Tablet to Game", "mnuConnect")
    manager.Initialize
End Sub

Sub mnuConnect_click
    If manager.GetDevices.Length = 0 Then
        ToastMessageShow ("No connected usb devices."& manager.GetDevices.Length,True)
    Else
        Dim device As UsbDevice = manager.GetDevices(0) 'assuming that there is exactly one device
        If manager.HasPermission(device) = False Then
            ToastMessageShow("Please connect and click again.", True)
            manager.RequestPermission(device)
        Else
            usbserial.Initialize("serial", device, -1)
            usbserial.BaudRate = 9600
            usbserial.DataBits = usbserial.DATA_BITS_8
            usbserial.StartReading
            ToastMessageShow ("connection sucessful",True)
        End If
    End If
    
End Sub

Private Sub serial_DataAvailable (Buffer() As Byte)
    Log("New data: " & bc.HexFromBytes(Buffer))
End Sub

 

[saunwin]

OK - ANother tablet works, so I guess the code is OK