MQTT Wifi SPIFFS Thing utility

Purpose

Implement sensors and actuators on MQTT in just a few lines.

Features

• Selects the access point with the best signal automatically.
• Reconnects when the access point disconnects.
• Stores access points settings on SPIFFS.
• Stores MQTT settings on SPIFFS.
• Uses lambda for callbacks.
• Uses a generic Value class as data type.

Usage

Create a data folder with two files: mqtt.txt and wifi.txt. Write mqtt settings in mqtt.txt 1st line: server 2nd line: port 3rd line: username 4th line: password

Write access point settings in wifi.txt odd lines: ssid even lines: password

Set callback onStateChange.

Add sensor and actuator topic callbacks.

Call begin() inside setup() Call handle() inside loop()

Example

#include "Thing.h"

using namespace g3rb3n;

Thing thing;

int count = 0;

void setup()
{
  Serial.begin(230400);
  Serial.println();
  
  thing.onStateChange([](const String& msg){
    Serial.println(msg);
  });
  
  thing.addSensor("sensor/test", 1000, [](Value& v){
    v = count++;
  });
  
  thing.addActuator("display/test", [](Value& v){
    String msg = v; 
    Serial.println(msg);
  });
  
  thing.begin();
}

void loop()
{
  thing.handle();
}