Search code examples
androidadbandroid-wifiandroid-open-accessory

How to use adb tcpip without USB debugging enabled?

I've read quite a few posts already on adb and tcpip mode and I can create a wireless adb connection, but only when USB debugging is on.

The way I'm using it is like so:

  1. USB debugging is enabled
  2. call adb tcpip on the computer (switches from usb to tcpip mode with default port 5555)
  3. call adb connect PHONE_IP and a connection is made

The above works with or without the usb cable being connected, but only when the USB debugging option is ticked in Developer Options on the Android device. As soon as I untick the option, the tcp connection is lost and cannot be re-established until re-enabling the USB debugging option.

The problem is I'm getting started with a IOIO OTG device and I need to disable USB debugging to use the IOIO as an Accessory Device. It would be really useful if I can use the IOIO and debug with adb at the same time.

I'm using Android 4.1.2 (API 16) on the device. I can use two devices, both using the same OS version, one rooted, one un-rooted.

Is it possible to use adb in tcpip mode without USB debugging enabled ? If so, how ?

Solution

  • On your rooted device, install a Terminal Emulator

    enter "su" and then "start adbd" (source)

    I have tried this on my rooted Android 4.0.4 device. I could connect normally without enabling USB debugging. A few more words:

    • "USB Debugging" is actually called "enable_adb" internally.
    • If you enable USB Debugging this usually happens(little device dependant):
    • a Settings.Secure value is stored (ADB_ENABLED)
    • (on some devices also a system property is set)
    • the adb deamon is started

    If the UsbManager just checks for the Secure Setting, everything should work. If it checks for the actual running deamon you are out of luck.