I have one custom made device for measuring current. This device can be connected to PC and communication is done over USB. It is based on FTDI chip. I have application written in Java and that application is using rxtxSerial.dll library and gnu.io.rxtx_2.1.7.4.jar. Now I want to port this application on my android device and I'm litte bit confused what to do that? All I have is android tablet (os version 4.1.1), OTG cable and this measuring device.

Aug 30, 2012 - RxTx - if not used as a JavaComm driver - provides a richer interface. One wants to use non-standard devices, like USB-to-serial converters. USB to serial chip CH340 English DataSheet. CH340 is a USB bus convert chip and it can realize USB convert to serial interface, USB convert to IrDA infrared or USB convert to printer interface. In serial interface mode, CH340 supplies common MODEM liaison signal, used to enlarge.

Should my device be rooted? Is there any kind of library that I can simply add to my Java Android application and read data over USB? Where to start? I have tried to port existing application for PC using same library, but rxtxSerial.dll is missing and I can't transfer it to my android device.

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