99 lines
3.0 KiB
C++
99 lines
3.0 KiB
C++
#include <ESP8266WiFi.h> // Enables the ESP8266 to connect to the local network (via WiFi)
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#include <PubSubClient.h> // Allows us to connect to, and publish to the MQTT broker
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const int ledPin = 0; // This code uses the built-in led for visual feedback that the button has been pressed
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const int buttonPin = 13; // Connect your button to pin #13
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// WiFi
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// Make sure to update this for your own WiFi network!
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const char *ssid = "internet_of_insecure_things";
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const char *wifi_password = "pass";
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// MQTT
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const char *clientID = "window_0"; // Unique to this device
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// Make sure to update this for your own MQTT Broker!
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const char *mqtt_server = "mqtt.kitsunehosting.net";
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const char *mqtt_topic = "home/upstairs_lab/actuators/window_0";
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const char *mqtt_username = "user";
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const char *mqtt_password = "pass";
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// Initialise the WiFi and MQTT Client objects
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WiFiClient wifiClient;
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PubSubClient client(mqtt_server, 1883, wifiClient); // 1883 is the listener port for the Broker
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void setup()
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{
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pinMode(ledPin, OUTPUT);
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// Switch the on-board LED off to start with
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digitalWrite(ledPin, HIGH);
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// Begin Serial on 115200
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// Remember to choose the correct Baudrate on the Serial monitor!
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// This is just for debugging purposes
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Serial.begin(115200);
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Serial.print("Connecting to ");
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Serial.println(ssid);
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// Connect to the WiFi
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WiFi.begin(ssid, wifi_password);
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// Wait until the connection has been confirmed before continuing
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while (WiFi.status() != WL_CONNECTED)
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{
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delay(500);
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Serial.print(".");
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}
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// Debugging - Output the IP Address of the ESP8266
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Serial.println("WiFi connected");
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Serial.print("IP address: ");
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Serial.println(WiFi.localIP());
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// Connect to MQTT Broker
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// client.connect returns a boolean value to let us know if the connection was successful.
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// If the connection is failing, make sure you are using the correct MQTT Username and Password (Setup Earlier in the Instructable)
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if (client.connect(clientID, mqtt_username, mqtt_password))
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{
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Serial.println("Connected to MQTT Broker!");
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}
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else
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{
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Serial.println("Connection to MQTT Broker failed...");
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}
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}
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void loop()
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{
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digitalWrite(ledPin, LOW);
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if (client.publish(mqtt_topic, "0"))
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{
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Serial.println("Button pushed and message sent!");
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}
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else
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{
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Serial.println("Message failed to send. Reconnecting to MQTT Broker and trying again");
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client.connect(clientID, mqtt_username, mqtt_password);
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delay(10); // This delay ensures that client.publish doesn't clash with the client.connect call
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client.publish(mqtt_topic, "-1");
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}
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delay(400);
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digitalWrite(ledPin, HIGH);
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if (client.publish(mqtt_topic, "1"))
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{
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Serial.println("Button pushed and message sent!");
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}
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else
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{
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Serial.println("Message failed to send. Reconnecting to MQTT Broker and trying again");
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client.connect(clientID, mqtt_username, mqtt_password);
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delay(10); // This delay ensures that client.publish doesn't clash with the client.connect call
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client.publish(mqtt_topic, "-1");
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}
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delay(400);
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}
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