Android: USB Communication Android <-> External Device

Question

I found several threads speacking about this subject, but after read them I don\'t have a clear idea about my problem.

We have a external device (something like a tomtom

Answer 1

If the android device that you are attaching your device to, supports host mode then the usb api can help. it is however a low level api that talks in usb request buffers (URBs) I am writing a serial abstraction at the moment using this api but it is not ready for airing at present.

If your non android device is able to act as host then as Royston suggests the adb route might be best for you and there are examples of how to do this in the api bundles post api version 12.