Processing control of Ethernet to serial board

Processing Electronics (Arduino, etc.)
1

Hello,

I would like to use Processing to communicate with an Ethernet to serial device:

https://www.usriot.com/products/serial-ttl-to-ethernet-module.html

“serial to Ethernet” or “Ethernet to serial” references below will be the hardware device.

Some configurations are:

  1. PC (processing) to serial > serial to Ethernet > Ethernet to serial > serial to PC (processing)

  2. PC (processing) to serial > serial to Ethernet > Ethernet to PC (processing)

  3. PC (processing) to Ethernet > Ethernet to serial > serial to Ethernet > Ethernet to PC (processing)

  4. PC (processing) to Ethernet > Ethernet to serial > serial to Processing and/or Arduino

Some will be easier than others. I can confidently handle the Processing to serial code.

The Processing to Ethernet part I have no experience with.
I will start with:
https://processing.org/tutorials/network/
https://processing.org/reference/libraries/net/index.html
http://learningprocessing.com/examples/
And some great references in the forum!

Any thoughts?

2

Did you make any progress on this problem, @glv?

3

I did!

I have Processing (client or server) connected to USR-TCP232-T2 (server or client) connected to an Arduino and blinking onboard LED 13.

It does open up some possibilities for a nice HMI interface on Processing side to control the Arduino or any serial device; even another Processing app reading serial port!

Simple code and I will clean it up and post it.

I am now working on HTTPD client in the device sending requests to a server and updating a web page. Using WAMP. Working on web page and learning PHP. Any thoughts on this?

GLV

4

When you say WAMP, are you passing messages as PHP url variables and storing them in a MySQL database? What kind of information?

5

Device is:
https://www.usriot.com/products/serial-ttl-to-ethernet-module.html

Arduino is sending serial data (“ON” or “OFF”) to device.
HTTPD client on device is sending data with a GET request to a server.
PHP script on server is saving data to a file.
Web brower client is reading file with a GET request and displaying status of LED.

I now have this working and can start playing with it.

Will replace GET with POST to send data from HTTPD client on device.

glv

6

I am working on a similar project I just want to know how did you code arduino for this and the library used.
TIA

7

I am planning to revisit this project in the next couple of weeks and may share some details. I learned so much doing this especially about how web pages work!

I did not use an Arduino library other than the serial libraries (initially); this was later coded without any Arduino libraries and programmed directly into an Atmel microcontroller.

I did explore making an embedded web server and posted this here:

This was just part of the exploration of this device.

This was done with a different device to explore websockets:

Other projects that I worked on were using the Arduino + USR-TCP232-E2 (or USR-TCP232-T2) device to collect and transmit data and a web page to plot data.

I also had this working with Processing libraries; I will find those and share with community at a later time…

glv

8

I posted an example in the gallery:

:slight_smile: