README.md

TAP USB dongle demo

This project contains source for the TAP USB dongle demonstration. Control/monitor your PC with an auto generated mobile application through a Tapioca USB-to-Wireless dongle.

It's composed of 3 projects:

• app: Source for the mobile application built with Ionic. It was auto generated by IoTize mobile app build server.
• modbus-slave: Source for the modbus slave application for node. This modbus application will listen for modbus request on the given serial port (See Modbus registers defined in annex).
• tap-config/modbus-slave-demo.iotz: IoTize Studio configuration file to configure the Tapioca for the demo.

Run the demo

1. Plugin the Tapioca USB dongle to your PC
2. Open tap-config/modbus-slave-demo.iotz with IoTize Studio. If you don't have it yet, it's here;
3. Configure your Tapioca with IoTize Studio
   1. Setup connection to your Tap
   2. Click on Configure button and wait for the end of the configuration process.
4. Start the Modbus Slave application:

Go to modbus-slave directory and run commands:

npm install
npm start

Note: node and npm are required (tested with node version >=10). If you don't have node, see node installation page

5. Install client application on your phone:

   1. Android: build/app-debug.apk
   2. iOS: build from the ionic sources in the app folder. See Ionic documentation

6. Run the mobile application, connect to the Tapioca and start monitoring hard drive usage, CPU usage and control screen luminosity with your phone.

Annex

Modbus slave application registers

Holding registers

Address	Size	Content
0x002	1 Word	Hard drive memory free in MB
0x004	1 Word	Total hard drive memory in MB
0x009	1 Word	Percentage of free memory
0x006	1 Word	Number of CPUs
0x00B	1 Word	CPU usage (in %)
0x100	1 Word	Screen brightness in %