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Huzzah board connects and subscribes but never receives mess
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Huzzah board connects and subscribes but never receives mess

by scrubb on Thu Dec 24, 2015 1:09 pm

I have followed the example sketch and compared it to many others, but I find that it never receives a subscribed message.
I've downloaded the desktop MQTT client and can subscribe to my feed. I have thoroughly tested the ESP setup by reading values from thingspeak via http get, but I want to use MQTT with io.adafruit so I don't have to poll all the time. I never get anything back in the subscription loop even when I flip the value via the dashboard and publish values via the desktop client. Any help would be really appreciated. Thanks!

Output:
Connecting to xxxxxxxxx
......
WiFi connected
IP address:
192.168.xx.yyy
Connecting to MQTT... MQTT Connected!
Entering While Loop
Entering While Loop
Entering While Loop
.. this loops forever and never shows any messages.


My code below is barely modified from the example:
Code: Select all | TOGGLE FULL SIZE
/***************************************************
  Adafruit MQTT Library ESP8266 Example

  Must use ESP8266 Arduino from:
    https://github.com/esp8266/Arduino

  Works great with Adafruit's Huzzah ESP board:
  ----> https://www.adafruit.com/product/2471

  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       "XXXXX"
#define WLAN_PASS       "XXXXX"

/************************* Adafruit.io Setup *********************************/

#define AIO_SERVER      "io.adafruit.com"
#define AIO_SERVERPORT  1883
#define AIO_USERNAME    "yyyyyy"
#define AIO_KEY         "xxxxxxxxxxxxxxxxx"

/************ Global State (you don't need to change this!) ******************/

// Create an ESP8266 WiFiClient class to connect to the MQTT server.
WiFiClient 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);

/****************************** Feeds ***************************************/

// Setup a feed called 'onoff' for subscribing to changes.
const char ONOFF_FEED[] PROGMEM = AIO_USERNAME "/feeds/onair";
Adafruit_MQTT_Subscribe onoffbutton = Adafruit_MQTT_Subscribe(&mqtt, ONOFF_FEED);

/*************************** 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() {
  Serial.begin(115200);
  pinMode(0, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
  pinMode(14, OUTPUT);

  digitalWrite(0, HIGH);
  digitalWrite(5, HIGH);
  digitalWrite(12, HIGH);
  digitalWrite(13, HIGH);
  digitalWrite(14, HIGH);

 
  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 feed.
  mqtt.subscribe(&onoffbutton);
}

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
  Adafruit_MQTT_Subscribe *subscription;
  Serial.println("Entering While Loop");
  while ((subscription = mqtt.readSubscription(1000))) {
    Serial.print(F("Got: "));
    Serial.println((char *)onoffbutton.lastread);
    if (subscription == &onoffbutton) {
      Serial.println(F("inside if"));
    }
  }


  // ping the server to keep the mqtt connection alive
  if(! mqtt.ping()) {
    mqtt.disconnect();
  }

  delay(1000);

}


void lightOff(){
  digitalWrite(0, HIGH);
  digitalWrite(5, HIGH);
  digitalWrite(12, HIGH);
  digitalWrite(13, HIGH);
  digitalWrite(14, HIGH);
}

void lightOn(){
  digitalWrite(0, LOW);
  digitalWrite(5, LOW);
  digitalWrite(12, LOW);
  digitalWrite(13, LOW);
  digitalWrite(14, LOW);
}





// 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... ");

  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
  }
  Serial.println("MQTT Connected!");
}
Last edited by franklin97355 on Thu Dec 24, 2015 10:26 pm, edited 1 time in total.
Reason: Added missing [code] tags.

scrubb
 
Posts: 3
Joined: Thu Dec 24, 2015 12:53 pm

Re: Huzzah board connects and subscribes but never receives

by platypus18 on Thu Dec 24, 2015 3:12 pm

I'm running into the same issue this morning. I have a project that allows me to change colors on a NeoPixel strip connected to a Huzzah feather board using a color wheel on a dashboard. It has been working for several days, but this morning it never picked up changes to RGB values from the feed. Thoughts?

platypus18
 
Posts: 21
Joined: Sun Jul 05, 2015 1:06 pm

Re: Huzzah board connects and subscribes but never receives

by scrubb on Thu Dec 24, 2015 4:21 pm

Further testing and paying a little more attention, I have discovered that I can publish from the desktop app MQTT.fx and that works great. I can subscribe successfully and change values from a dashboard on the web page, but I don't see any messages in the desktop app. I'm beginning to wonder if there isn't a bug or an outage. Anyone else having troubles with subscribed MQTT messages?

scrubb
 
Posts: 3
Joined: Thu Dec 24, 2015 12:53 pm

Re: Huzzah board connects and subscribes but never receives

by aforaste1 on Thu Dec 24, 2015 7:06 pm

I just received an email alert set off by a low humidity feed value trigger, which is odd because I unplugged the power from my project 22 hours ago. I only mention this as it is strange behavior.

aforaste1
 
Posts: 18
Joined: Sun Nov 01, 2015 11:40 am

Re: Huzzah board connects and subscribes but never receives

by platypus18 on Thu Dec 24, 2015 9:11 pm

FYI, my project has begun working again. I didn't change anything on my end, just tried setting a color value and it worked. Christmas can continue.... :)

Note to self... Internet enabled Christmas decorations might need an alternative, out-of-band, controller such as a Bluefruit feather. Guess that means more shopping! :)

platypus18
 
Posts: 21
Joined: Sun Jul 05, 2015 1:06 pm

Re: Huzzah board connects and subscribes but never receives

by scrubb on Tue Dec 29, 2015 11:21 pm

Looks like it was a server thing. I tried my exact code when i got back from Christmas visiting and it all worked as expected. Thanks for the responses.

scrubb
 
Posts: 3
Joined: Thu Dec 24, 2015 12:53 pm

Please be positive and constructive with your questions and comments.