Sending commands from a PC to an Android phone - via physical connection (USB, Serial, etc)

I'm working on a project to automate some tasks (such as play a song, play a video, receive bluetooth data, etc) on an Android phone from a PC.

Basically the PC will send a notifier to the phone and an app or something on the phone would then process the notifier and do 'something'. The opposite of this really: http://code.google.com/p/android-notifier/

I've seen some examples showing how to send commands to an Android listener app or service via a network connection, but in this case, I would much rather the transmission be over a physical connection.

USB Ideally, I'd like the connection to be via the USB port. But I've seen some posts online that suggest that the SDK does not natively support this. (Android apps, communicating with a device plugged in the USB port).

• Is there some other SDK/API out there that makes this easier?
• I've seen some posts on the ADB, but don't really get it... Would that work? (http://dev开发者_运维知识库eloper.android.com/guide/developing/tools/adb.html)

Serial over USB I've also seen some sites that show how to use a breakoutbox to perform bi-directional serial communication, but only with the G1. Is this possible with newer phones?

The Phone I'm open to really any newish phone. I'm currently looking at the Galaxy S, because it has the video out through the headphone jack. I'm open to rooting if need be.

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Implement a HTTP server in your app, then put your phone in USB Tether mode. This will create a local network between your phone and your PC. You should then be able to send HTTP request or create websockets using the phone's ip.

EDIT : I tested it, and it works, see here

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What you can do is the phone acting as a server and then use adb to forward ports [1].

In this scenario the pc app would connect to localhost which would be redirected to the app on the phone via the usb cable.

But if you go this way, you might just as well simply connect directly to the phone's ip (without the adb port forwarding)...

[1] http://developer.android.com/guide/developing/tools/adb.html#forwardports