#include <ESP8266WiFi.h>
#include "Adafruit_MQTT.h"
#include "Adafruit_MQTT_Client.h"
// the on off button feed turns this LIGHT_PIN on/off
#define LIGHT_PIN1 5
#define LIGHT_PIN2 12
#define LIGHT_PIN3 4
#define LIGHT_PIN4 13
/************************* WiFi Access Point *********************************/
#define WLAN_SSID "hidden"
#define WLAN_PASS "qwerty12345"
/************************* Adafruit.io Setup *********************************/
#define AIO_SERVER "io.adafruit.com"
#define AIO_SERVERPORT 1883 // use 8883 for SSL
#define AIO_USERNAME "iotdev"
#define AIO_KEY "7cfc053140584a90af4cb13a769c9aed"
/************ Global State (you don't need to change this!) ******************/
// Create an ESP8266 WiFiClient class to connect to the MQTT server.
WiFiClient client;
// or... use WiFiFlientSecure for SSL
//WiFiClientSecure client;
// Setup the MQTT client class by passing in the WiFi client and MQTT server and login details.
Adafruit_MQTT_Client mqtt(&client, AIO_SERVER, AIO_SERVERPORT, AIO_USERNAME, AIO_USERNAME, AIO_KEY);
/****************************** Feeds ***************************************/
// Notice MQTT paths for AIO follow the form: <username>/feeds/<feedname>
Adafruit_MQTT_Subscribe light1 = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/light1");
Adafruit_MQTT_Subscribe light2 = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/light2");
Adafruit_MQTT_Subscribe light3 = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/light3");
Adafruit_MQTT_Subscribe light4 = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/light4");
/*************************** Sketch Code ************************************/
// Bug workaround for Arduino 1.6.6, it seems to need a function declaration
// for some reason (only affects ESP8266, likely an arduino-builder bug).
void MQTT_connect();
void setup() {
pinMode(LIGHT_PIN1, OUTPUT);
pinMode(LIGHT_PIN2, OUTPUT);
pinMode(LIGHT_PIN3, OUTPUT);
pinMode(LIGHT_PIN4, OUTPUT);
Serial.begin(115200);
delay(10);
Serial.println(F("Adafruit MQTT demo"));
// Connect to WiFi access point.
Serial.println(); Serial.println();
Serial.print("Connecting to ");
Serial.println(WLAN_SSID);
WiFi.begin(WLAN_SSID, WLAN_PASS);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println();
Serial.println("WiFi connected");
Serial.println("IP address: "); Serial.println(WiFi.localIP());
// Setup MQTT subscription for onoff.
mqtt.subscribe(&light1);
mqtt.subscribe(&light2);
mqtt.subscribe(&light3);
mqtt.subscribe(&light4);
}
uint32_t x=0;
void loop() {
// Ensure the connection to the MQTT server is alive (this will make the first
// connection and automatically reconnect when disconnected). See the MQTT_connect
// function definition further below.
MQTT_connect();
// this is our 'wait for incoming subscription packets' busy subloop
// try to spend your time here
Adafruit_MQTT_Subscribe *subscription;
while ((subscription = mqtt.readSubscription(5000))) {
// Check if its the onoff button feed Light1
if (subscription == &light1) {
Serial.print(F("On-Off button: "));
Serial.println((char *)light1.lastread);
if (strcmp((char *)light1.lastread, "OFF") == 0) {
digitalWrite(LIGHT_PIN1, LOW);
}
if (strcmp((char *)light1.lastread, "ON") == 0) {
digitalWrite(LIGHT_PIN1, HIGH);
}
}
// Check if its the onoff button feed Light2
if (subscription == &light2) {
Serial.print(F("On-Off button: "));
Serial.println((char *)light2.lastread);
if (strcmp((char *)light2.lastread, "OFF") == 0) {
digitalWrite(LIGHT_PIN2, LOW);
}
if (strcmp((char *)light2.lastread, "ON") == 0) {
digitalWrite(LIGHT_PIN2, HIGH);
}
}
// Check if its the onoff button feed Light3
if (subscription == &light3) {
Serial.print(F("On-Off button: "));
Serial.println((char *)light3.lastread);
if (strcmp((char *)light3.lastread, "OFF") == 0) {
digitalWrite(LIGHT_PIN3, LOW);
}
if (strcmp((char *)light3.lastread, "ON") == 0) {
digitalWrite(LIGHT_PIN3, HIGH);
}
}
// Check if its the onoff button feed Light4
if (subscription == &light4) {
Serial.print(F("On-Off button: "));
Serial.println((char *)light4.lastread);
if (strcmp((char *)light4.lastread, "OFF") == 0) {
digitalWrite(LIGHT_PIN4, LOW);
}
if (strcmp((char *)light4.lastread, "ON") == 0) {
digitalWrite(LIGHT_PIN4, HIGH);
}
}
}
// ping the server to keep the mqtt connection alive
if(! mqtt.ping()) {
mqtt.disconnect();
}
}
// Function to connect and reconnect as necessary to the MQTT server.
void MQTT_connect() {
int8_t ret;
// Stop if already connected.
if (mqtt.connected()) {
return;
}
Serial.print("Connecting to MQTT... ");
uint8_t retries = 3;
while ((ret = mqtt.connect()) != 0) { // connect will return 0 for connected
Serial.println(mqtt.connectErrorString(ret));
Serial.println("Retrying MQTT connection in 5 seconds...");
mqtt.disconnect();
delay(5000); // wait 5 seconds
retries--;
if (retries == 0) {
// basically die and wait for WDT to reset me
while (1);
}
}
Serial.println("MQTT Connected!");
}
