title: Android: USB Communication Android <-> External Device
body: <p>I found several threads speacking about this subject, but after read them I don't have a clear idea about my problem.</p>
  
  <p>We have a external device (something like a tomtom device, I mean, not an accessory) and we want to connect this device to an android device. And we want to have serial communication between the external device and the android device using a USB connection. (At this time we have communication between the external device and other non android devices using RS232 interface, but the external device can handle the communication using a usb cable)</p>
  
  <p>As I read, we have USB API support since 3.1.</p>
  
  <p>Can we develop an android application which communicates with our external device using USB cable? I mean, sending data to the device and receiving data from the device, both ways, we want to use the Android device as a "display".</p>
  
  <p>Thank you very much in advance.</p>