Basic MQTT example for OpenRemote www.openremote.io

This Code is for an ESP32 In case you use an ESP8266, change the WiFi Library. #include <ESP8266WiFi.h>

For ESP8266 SSL Connection, you need a fingerprint of your Server Certificate Example: "static const char *fingerprint PROGMEM = "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00";" and in the setup: askClient.setFingerprint(fingerprint);

This sketch demonstrates the basic capabilities of the library. It connects to an OpenRemote MQTT server then:

• publishes boolean "1" to your topic
• publishes "Hello" to another topic
• subscribes to your topic printing out any messages

It will reconnect to the server if the connection is lost using a blocking reconnect function.

Edit secret.h for your credentials.

In case you connect to the broker nonsecure, change the object "WifiClientSecure" to "WifiClient" and comment out in setup askClient.setCACert(local_root_ca); Also change the MQTT Port in secret.h

Important: Don't forget to add the PubSubClient to your Library https://github.com/knolleary/pubsubclient