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/***************************************************
Adafruit MQTT Library ESP8266 Example
Must use ESP8266 Arduino from:
https://github.com/esp8266/Arduino
Works great with Adafruit's Huzzah ESP board & Feather
----> https://www.adafruit.com/product/2471
----> https://www.adafruit.com/products/2821
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Tony DiCola for Adafruit Industries.
MIT license, all text above must be included in any redistribution
****************************************************/
#include <ESP8266WiFi.h>
#include "Adafruit_MQTT.h"
#include "Adafruit_MQTT_Client.h"
/************************* WiFi Access Point *********************************/
#define WLAN_SSID "---ssid---"
#define WLAN_PASS "---password---"
/************************* Adafruit.io Setup *********************************/
#define AIO_SERVER "io.adafruit.com"
#define AIO_SERVERPORT 1883 // use 8883 for SSL
#define AIO_USERNAME "adafruit_mqqt-user"
#define AIO_KEY "adafruit_io_key"
/************ 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;
// Store the MQTT server, username, and password in flash memory.
// This is required for using the Adafruit MQTT library.
/*const char MQTT_SERVER[] PROGMEM = AIO_SERVER;
const char MQTT_USERNAME[] PROGMEM = AIO_USERNAME;
const char MQTT_PASSWORD[] PROGMEM = AIO_KEY;*/
// Setup the MQTT client class by passing in the WiFi client and MQTT server and login details.
//Adafruit_MQTT_Client mqtt(&client, MQTT_SERVER, AIO_SERVERPORT, MQTT_USERNAME, MQTT_PASSWORD);
Adafruit_MQTT_Client mqtt(&client, AIO_SERVER, AIO_SERVERPORT, AIO_USERNAME, AIO_KEY);
/****************************** Feeds ***************************************/
// Setup a feed called 'onoff' for subscribing to changes.
//const char ONOFF_FEED[] PROGMEM = AIO_USERNAME "/feeds/onoff";
Adafruit_MQTT_Subscribe onoffbutton = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/onoff");
Adafruit_MQTT_Publish onOff = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/onoff");//Manual switch
/*************************** 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();
#define RELAY 12
#define LED 13
#define SWITCH 0
boolean toggle = false;
void setup() {
Serial.begin(115200);
delay(10);
pinMode(RELAY, OUTPUT);
pinMode(LED, OUTPUT);
digitalWrite(LED, HIGH);
pinMode(SWITCH, INPUT_PULLUP);
Serial.println(F("Adafruit MQTT SONOFF 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(".");
toggle = !toggle;
digitalWrite(LED, toggle);
}
Serial.println();
Serial.println("WiFi connected");
Serial.println("IP address: "); Serial.println(WiFi.localIP());
digitalWrite(LED, HIGH);
// Setup MQTT subscription for onoff feed.
mqtt.subscribe(&onoffbutton);
}
uint32_t x=0;
uint8_t lastStateSwitch = 0;
void relay(char* onof){
String state = String(onof);
if((digitalRead(RELAY) != HIGH) && (state == "ON")){
digitalWrite(RELAY, HIGH);//On relay
digitalWrite(LED, LOW);//On led
}else if((digitalRead(RELAY) == HIGH) && (state == "OFF")){
digitalWrite(RELAY, LOW);//Off relay
digitalWrite(LED, HIGH);//Off led
}else{
Serial.print("I got this = ");
Serial.println(onof);
}
}//end relay
void manualRelay(){
if(!digitalRead(SWITCH)){
lastStateSwitch = !lastStateSwitch;//Update switch state
if(lastStateSwitch){
if (! onOff.publish("ON")) {
Serial.println(F("Failed"));
} else {
Serial.println(F("OK!"));
}//end if
}else{
if (! onOff.publish("OFF")) {
Serial.println(F("Failed"));
} else {
Serial.println(F("OK!"));
}//end if
}//end if
}//end if
}//end manualRelay
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))) {
if (subscription == &onoffbutton) {
Serial.print(F("Got: "));
Serial.println((char *)onoffbutton.lastread);
relay((char *)onoffbutton.lastread);
}
}
manualRelay();
// Now we can publish stuff!
// ping the server to keep the mqtt connection alive
// NOT required if you are publishing once every KEEPALIVE seconds
/*
if(! mqtt.ping()) {
mqtt.disconnect();
}
*/
}
// Function to connect and reconnect as necessary to the MQTT server.
// Should be called in the loop function and it will take care if connecting.
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!");
}
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