Unless someone can answer definitively based on the phone's technical 
information,

Based on observation only, it's not possible based on general USB architecture. 
In any USB connection, one endpoint is designated the Host and multiple guests 
can connect to that Host (IIRC theoretically 256 devices).

Because the Phone can connect to the USB port of a computer, the computer is 
always the Host and anything else that can connect is a Guest, so the Phone's 
USB port is a Guest.

A Sensor would also be a Guest so cannot connect to the Phone, it needs to 
connect to a port configured as a Host.

Tony

----- Original Message -----
From: Mas <[email protected]>
Sent: Wed, 7/8/2009 12:12pm
To: Android Beginners <[email protected]>
Subject: [android-beginners] USB data acquisition


Hello,

I am doing a feasibility study using an Android Dev phone. I want to
attach the phone using the USB cable (or the serial port) to a sensor.
In an application, I want to pole the sensor over the cable and have
the resultant value displayed on the screen. The interaction between
the sensor and the phone would involve the phone sending down a
request data byte and the sensor responding with the necessary data.
Is a data acquisition application of this nature possible on the
phone?

Thank you for your time,
Mas



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