Android Java - Modbus App Chat Program

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Android Java - Modbus App Chat Program
Objective
We are looking for candidates with strong competence in Android Native Java and familiarity with Modbus RTU, ASCII, TCP applications.
We are looking to build an Android Java based Modbus App chat program that can be configured in Master Mode or Slave mode. See Image attached.
Requirements:
1) App is a simple chat program that communicates in Modbus.
2) App can support multiple Modbus protocols, RTU, ASCII or TCP. User can configure which protocol they want to communicate with.
3) App can be configured to work in Master mode or Slave mode.
4) Same app should be able to run two Android Devices to test. Android Device A will be able to run the app in Master Mode. Android Device B will be able to run in Slave mode.
5) App should be written Native Android Java (not Kotlin).
Deliverables:
a) Your developed Arlyn Modbus App that can be tested with a Modbus utility running on PC or Android such as:
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b) The Arlyn Modbus app can be installed in Android Devices and be configured and run as stated above.
c) All Source code/design documents.
You can use free open source libraries (LGPL or MIT or any free for commercial use), or if you want to use specific paid drivers, let us know which driver you would want to use.
Thanks.
Skills:
Android
, PLC & SCADA

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