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There is an MQTT library compatible with Controllino MAXI and MEGA (Must provide a network implementation). It can be installed via Library Manager in Arduino IDE see:
[img]https://i.postimg.cc/YqgLcmNd/MQTT-Library.png [/img] After installing the library it is possible to use MQTTClient class:
Code:MQTTClient client;
MQTT client has to be initialized ie:
Code:client.begin(“broker.shiftr.io”, net);
broker.shiftr.io is a free service which provides a rich publish & subscribe communication infrastructure.
net is initialized EthernetClient connection.
Then it is possible to Register a handler for incoming messages
Code:client.onMessage(messageReceived);
messageReceived is a function, that will be called whenever a message is received from the topic. The function must have two string parameters topic and message ie:
Code:void messageReceived(String &topic, String &payload)
{
Serial.println(“incoming: ” + topic + ” – ” + payload);
}Method for connecting the client with a username and password specified:
Code:client.connect(“Controllino”, “try”, “try”)
Methods for Publish/Subscribe to broker are:
Code:client.publish(“/controllino.biz”, “Hello Controllino”);
client.subscribe(“/controllino.biz”);When Example sketch is used, the communication can be seen on web pages of Shiftr.io:
[img]https://i.postimg.cc/GpnQwCsy/shiftr-io-web.png [/img] And on Controllino terminal:
[img]https://i.postimg.cc/CKwqsLqm/terminal.png [/img] -
Hello, I think the “MQTT” Lib from Joel Gaehwiler is used here. On the Github Site you can see some examples and information to the lib:
https://github.com/256dpi/arduino-mqtt -
Hello
Here it is.
It was tested as PlatformIO project with this config (.ini)
; PlatformIO Project Configuration File ; ; Build options: build flags, source filter ; Upload options: custom upload port, speed and extra flags ; Library options: dependencies, extra library storages ; Advanced options: extra scripting ; ; Please visit documentation for the other options and examples ; https://docs.platformio.org/page/projectconf.html [env:controllino_maxi] platform = atmelavr board = controllino_maxi framework = arduino lib_deps = controllino, ethernet, SPI, MQTT
Code:
#include <SPI.h>
#include <Controllino.h> /* Usage of CONTROLLINO library allows you to use CONTROLLINO_xx aliases in your sketch. */
#include <Ethernet.h>
#include <MQTT.h> /* by Joël Gähwiler. Have to be installed via Library Manager. See https://github.com/256dpi/arduino-mqtt */
/*
CONTROLLINO - Demonstration of MQTT protocol usage, Version 01
Based on example code by Joël Gähwiler. See https://github.com/256dpi/arduino-mqtt .
You can check on your device after a successful
connection here: https://shiftr.io/try .
Compatible with CONTROLLINO MAXI, MAXI Automation and MEGA.
IMPORTANT INFORMATION!
Please, select proper target board in Tools->Board->Controllino MAXI/MEGA before Upload to your CONTROLLINO.
(Refer to https://github.com/CONTROLLINO-PLC/CONTROLLINO_Library if you do not see the CONTROLLINOs in the Arduino IDE menu Tools->Board.)
Created 29 Jan 2019
by Jasin
https://controllino.biz/
Check https://github.com/CONTROLLINO-PLC/CONTROLLINO_Library for the latest CONTROLLINO related software stuff.
Visit our forum here: https://forum.controllino.biz/
*/
byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
byte ip[] = {192, 168, 16, 177}; // <- change to match your network
EthernetClient net;
MQTTClient client;
unsigned long lastMillis = 0;
void connect() {
Serial.print("connecting...");
while (!client.connect("Controllino", "try", "try")) {
Serial.print(".");
delay(1000);
}
Serial.println("nconnected!");
client.subscribe("/controllino.biz");
// client.unsubscribe("/hello");
}
void messageReceived(String &topic, String &payload) {
Serial.println("incoming: " + topic + " - " + payload);
}
void setup() {
Serial.begin(9600);
Ethernet.begin(mac, ip);
// Note: Local domain names (e.g. "Computer.local" on OSX) are not supported by Arduino.
// You need to set the IP address directly.
client.begin("broker.shiftr.io", net);
client.onMessage(messageReceived);
connect();
}
void loop() {
client.loop();
if (!client.connected()) {
connect();
}
// publish a message roughly every second.
if (millis() - lastMillis > 1000) {
lastMillis = millis();
client.publish("/controllino.biz", "Hello Controllino");
}
}
/* 2019-01-29: The sketch was successfully tested with Arduino 1.8.5, Controllino Library 3.0.4 and CONTROLLINO MAXI. */
- This reply was modified 3 years, 9 months ago by ivan-controllino.
- This reply was modified 3 years, 3 months ago by ivan-controllino.
- This reply was modified 3 years, 3 months ago by ivan-controllino.
- This reply was modified 3 years, 3 months ago by ivan-controllino.
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