Android Question USBRequest

[kuosda]

Sub SendInRequest(Name As String)
Dim request As UsbRequest
request.Initialize(connection, inEndpoint)
request.Name = Name
Dim Data(inEndpoint.MaxPacketSize) As Byte
request.Queue(Data, Data.Length)
End Sub

Sub USB_NewData (Request As UsbRequest, InDirection As Boolean)

END Sub

How do I use it?
Why did not respond?

 

[Erel]

Please use [code]code here...[/code] tags when posting code.

You should call Connection.ContinueListening.
See this tutorial: https://www.b4x.com/android/forum/threads/android-usb-host-tutorial-adbtest.11289/
Which USB device is connected?

 

[kuosda]

I tested can be used, thank you
But I would like to ask
UsbRequest.buffer can determine the useful length?
Because UsbRequest.buffer seems to be a fixed length

It seems that there is no update usb this component

 

[Erel]

You set the number of bytes that will be read from the USB peripheral in the call to UsbRequest.Queue.

 

[kuosda]

UsbRequest.Queue can only read fixed length, but read the device data is not solid

 

[Erel]

The actual number of bytes read is not available.