Android Question Android Bluetooth - sent command

[Gianluca Esposito]

hi,
How do I send the following command?

Command sent:
0x8001 (Fixed)
0x0000 (Message ID)
0x00005358 (Vendor ID = CAEN SpA)
0x0021 (Message Length)
0x0000 (Reserved)
0x0008 (AVP Length)
0x0001 (AVP Type = CommandName)
0x0013 (AVP Value = InventoryTag)
0x0000 (Reserved)
0x000F (AVP Length)
0x00FB (AVP Type = SourceName)
0x536F757263655F3000 (AVP Value = “Source_0”)

Thanks

 

[Erel]

AStream.Write(Array As Byte(0x80, 0x01, 0x00, 0x00, 0x00, ...)
'or
Dim bc As ByteConverter
AStream.Write(bc.HexToBytes("800100000053580021..."))

 

[Gianluca Esposito]

Unfortunately it does not work. The reader does not respond

 

[DonManfred]

did you connect to the device before and opened a Asyncstream?
Check serial tutorial https://www.b4x.com/android/forum/threads/android-serial-tutorial.6908/#content

or https://www.b4x.com/android/forum/threads/android-bluetooth-bluetoothadmin-tutorial.14768/

 

[Gianluca Esposito]

i used: https://www.b4x.com/android/forum/threads/android-bluetooth-bluetoothadmin-tutorial.14768/
in the chat ativity:

Sub btnSend_Click
   
   
   
    Dim bc As ByteConverter
    AStream.Write(bc.HexToBytes("80010003000053580035000000080001008A0000000F00FB536F757263655F30000000000A006A000000000000000A006B00000000"))
   
    txtInput.SelectAll
    txtInput.RequestFocus
    LogMessage("Me", txtInput.Text)
End Sub

 

[Erel]

Is there any example in the documentation of this device? Might be an endianess issue.

 

[Gianluca Esposito]

yes, page 38
http://www.giadatechnology.it/mobile/easy2read_protocol_rev16.pdf

Thanks

 

[Erel]

Make sure that AsyncStream is not initialized in prefix mode.

 

[Gianluca Esposito]

If AStream.IsInitialized = False Then
        AStream.InitializePrefix(Main.serial1.InputStream, True, Main.serial1.OutputStream, "AStream")
       
    End If

 

[DonManfred]

AStream.InitializePrefix(Main.serial1.InputStream, True, Main.serial1.OutputStream, "AStream")

this is wrong.

Make sure that AsyncStream is not initialized in prefix mode.

 

[Erel]

AsyncStreams tutorial: https://www.b4x.com/android/forum/threads/asyncstreams-tutorial.7669/#content