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mik3y / usb-serial-for-android

Android USB host serial driver library for CDC, FTDI, Arduino and other devices.
MIT License
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Control Transfer Failed #332

Closed shgrg1712 closed 3 years ago

shgrg1712 commented 3 years ago

Hello Koi, I am very thankful to you for this library. This is very useful. I have created one application where I have attached one thermal sensor with android device and capturing temperature using serial connection.

I am facing one issue so I need your help.

Scenario

  1. Android app which is running in kiosk mode.
  2. Thermal sensor connected with application using OTG
  3. Driver class used to connect CdcAcmSerialDriver

Issue

  1. Connect thermal sensor with android app using otg with only sensor connected to OTG. Connection successful with receiving data.
  2. Connect power supply with micro terminal of OTG.
  3. Restart the android device. but before restart disconnect the connection.
  4. On application start, reconnect the serial connection.

Issue : TYPE 6 MESSAGE Exception in connect TRACE java.io.IOException: controlTransfer failed at com.hoho.android.usbserial.driver.CdcAcmSerialDriver$CdcAcmSerialPort.sendAcmControlMessage(CdcAcmSerialDriver.java:2) at com.hoho.android.usbserial.driver.CdcAcmSerialDriver$CdcAcmSerialPort.setParameters(CdcAcmSerialDriver.java:3) at d.h.a.a.c.a(UsbSerialConnection.java:44) at d.h.a.a.c$a.onReceive(UsbSerialConnection.java:7) at android.app.LoadedApk$ReceiverDispatcher$Args.lambda$getRunnable$0(LoadedApk.java:1391) at android.app.-$$Lambda$LoadedApk$ReceiverDispatcher$Args$_BumDX2UKsnxLVrE6UJsJZkotuA.run(Unknown Source:2) at android.os.Handler.handleCallback(Handler.java:873) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:193) at android.app.ActivityThread.main(ActivityThread.java:6714) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:503) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:911)

This state is not recoverable. I have tried to connect to device again. It is throwing same error again & again. Please help

KeaganFerrao commented 2 years ago

Hi, I am facing the same issue. After serial connection disconnect I get control transfer failed. And does not connect again at all. Then need to restart device.