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add standard connect function to time example

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This commit is contained in:
Todd Treece 2016-07-12 14:07:27 -04:00
parent 2d03ae9c89
commit b2a534ede9
1 changed files with 54 additions and 13 deletions
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67
examples/adafruitio_time_esp8266/adafruitio_time_esp8266.ino
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@ -1,3 +1,21 @@
/***************************************************
Adafruit MQTT Library ESP8266 Adafruit IO SSL/TLS example
Must use the latest version of 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.
Time additions by Todd Treece 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"
@ -61,21 +79,44 @@ void setup() {
void loop() {
int8_t code;
// 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();
// connect to adafruit io if not connected
if(! mqtt.connected()) {
// wait 10 seconds for subscription messages
// since we have no other tasks in this example.
mqtt.processPackets(10000);
Serial.print("Connecting to Adafruit IO... ");
if((code = mqtt.connect()) != 0) {
Serial.println(mqtt.connectErrorString(code));
while(1);
}
Serial.println("connected!");
}
mqtt.processPackets(1000);
// keep the connection alive
mqtt.ping();
}
// 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!");
}