123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
/***************************************************
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Adafruit MQTT Library ESP8266 Adafruit IO SSL/TLS example
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Must use the latest version of ESP8266 Arduino from:
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https://github.com/esp8266/Arduino
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Works great with Adafruit's Huzzah ESP board & Feather
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----> https://www.adafruit.com/product/2471
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----> https://www.adafruit.com/products/2821
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Adafruit invests time and resources providing this open source code,
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please support Adafruit and open-source hardware by purchasing
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products from Adafruit!
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Written by Tony DiCola for Adafruit Industries.
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Time additions by Todd Treece for Adafruit Industries.
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MIT license, all text above must be included in any redistribution
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****************************************************/
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#include <ESP8266WiFi.h>
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#include "Adafruit_MQTT.h"
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#include "Adafruit_MQTT_Client.h"
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/************************* WiFi Access Point *********************************/
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#define WLAN_SSID "network"
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#define WLAN_PASS "password"
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/************************* Adafruit.io Setup *********************************/
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#define AIO_SERVER "io.adafruit.com"
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#define AIO_SERVERPORT 8883
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#define AIO_USERNAME "user"
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#define AIO_KEY "key"
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WiFiClientSecure client;
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Adafruit_MQTT_Client mqtt(&client, AIO_SERVER, AIO_SERVERPORT, AIO_USERNAME, AIO_USERNAME, AIO_KEY);
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Adafruit_MQTT_Subscribe timefeed = Adafruit_MQTT_Subscribe(&mqtt, "time/seconds");
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// set timezone offset from UTC
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int timeZone = -4; // UTC - 4 eastern daylight time (nyc)
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int interval = 4; // trigger every X hours
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int hour = 0; // current hour
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void timecallback(uint32_t current) {
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// stash previous hour
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int previous = hour;
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// adjust to local time zone
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current += (timeZone * 60 * 60);
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// calculate current hour
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hour = (current / 60 / 60) % 24;
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// only trigger on interval
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if((hour != previous) && (hour % interval) == 0) {
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Serial.println("Run your code here");
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}
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}
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void setup() {
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Serial.begin(115200);
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delay(10);
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Serial.print(F("Adafruit IO Time Demo"));
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WiFi.begin(WLAN_SSID, WLAN_PASS);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(F("."));
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}
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Serial.println(F(" WiFi connected."));
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timefeed.setCallback(timecallback);
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mqtt.subscribe(&timefeed);
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}
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void loop() {
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// Ensure the connection to the MQTT server is alive (this will make the first
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// connection and automatically reconnect when disconnected). See the MQTT_connect
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// function definition further below.
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MQTT_connect();
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// wait 10 seconds for subscription messages
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// since we have no other tasks in this example.
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mqtt.processPackets(10000);
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// keep the connection alive
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mqtt.ping();
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}
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// Function to connect and reconnect as necessary to the MQTT server.
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// Should be called in the loop function and it will take care if connecting.
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void MQTT_connect() {
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int8_t ret;
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// Stop if already connected.
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if (mqtt.connected()) {
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return;
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}
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Serial.print("Connecting to MQTT... ");
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uint8_t retries = 3;
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while ((ret = mqtt.connect()) != 0) { // connect will return 0 for connected
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Serial.println(mqtt.connectErrorString(ret));
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Serial.println("Retrying MQTT connection in 5 seconds...");
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mqtt.disconnect();
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delay(5000); // wait 5 seconds
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retries--;
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if (retries == 0) {
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// basically die and wait for WDT to reset me
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while (1);
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}
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}
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Serial.println("MQTT Connected!");
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}
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