Android Question felUSBSerial

[Victor Pavlov]

The statement

If Not(USBSerial.isInitialized) Then USBSerial.Initialize("USBSerial", MyDevice, -1)

don't work correctly after

USBSerial.Close

We get error:
(NullPointerException) java.lang.NullPointerException: Attempt to invoke virtual method 'void com.felhr.usbserial.UsbSerialDevice$WorkerThread.setCallback(com.felhr.usbserial.UsbSerialInterface$UsbReadCallback)' on a null object reference

The solution is to use always:

USBSerial.Initialize("USBSerial", MyDevice, -1)

Do I make any mistake?

 

[DonManfred]

no; Initialize initializes and opens the Serial.

 

[Victor Pavlov]

What does the IsInitialized property show?

 

[Erel]

IsInitialized will still be True after you call Close. You should initialize it again if you want to reuse it.