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Nothing works
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Nothing works

by Lochec on Mon Oct 21, 2019 11:45 am

Hello,
I have troubles, even my examples doesnt work.

This is the example code:

/***************************************************
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 "******"
#define WLAN_PASS "******"

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

#define AIO_SERVER "io.adafruit.com"
#define AIO_SERVERPORT 1883 // use 8883 for SSL
#define AIO_USERNAME "*******"
#define AIO_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;

// 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_KEY);

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

// Setup a feed called 'photocell' for publishing.
// Notice MQTT paths for AIO follow the form: <username>/feeds/<feedname>
Adafruit_MQTT_Publish photocell = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/photocell");

// Setup a feed called 'onoff' for subscribing to changes.
Adafruit_MQTT_Subscribe onoffbutton = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/feeds/onoff");

/*************************** 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);
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
// 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);
}
}

// Now we can publish stuff!
Serial.print(F("\nSending photocell val "));
Serial.print(x);
Serial.print("...");
if (! photocell.publish(x++)) {
Serial.println(F("Failed"));
} else {
Serial.println(F("OK!"));
}

// 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!");
}



And this is the output:
17:28:16.189 -> Retrying MQTT connection in 5 seconds...
17:28:21.460 -> Connection failed
17:28:21.460 -> Retrying MQTT connection in 5 seconds...

What is wrong please?
Thank You
Vito

Lochec
 
Posts: 4
Joined: Mon Oct 21, 2019 9:09 am

Re: Nothing works

by Lochec on Mon Oct 21, 2019 12:10 pm

There is rest of output in serial monitor:

18:01:03.452 -> WiFi connected
18:01:03.452 -> IP address:
18:01:03.452 -> ******
18:01:03.452 -> Connecting to MQTT... Connection failed
18:01:03.698 -> Retrying MQTT connection in 5 seconds...
18:01:08.932 -> Connection failed
18:01:08.932 -> Retrying MQTT connection in 5 seconds...
18:01:14.192 -> Connection failed
18:01:14.192 -> Retrying MQTT connection in 5 seconds...
18:01:22.151 ->
18:01:22.151 -> Soft WDT reset
18:01:22.151 ->
18:01:22.151 -> >>>stack>>>
18:01:22.151 ->
18:01:22.151 -> ctx: cont
18:01:22.151 -> sp: 3ffffde0 end: 3fffffc0 offset: 01b0
18:01:22.151 -> 3fffff90: 3fffdad0 00000000 3ffee570 402011d4
18:01:22.151 -> 3fffffa0: 3fffdad0 00000000 3ffee570 4020344c
18:01:22.151 -> 3fffffb0: feefeffe feefeffe 3ffe8508 40100461
18:01:22.151 -> <<<stack<<<
18:01:22.188 ->
18:01:22.188 -> ets Jan 8 2013,rst cause:2, boot mode:(3,6)
18:01:22.188 ->
18:01:22.188 -> load 0x4010f000, len 1384, room 16
18:01:22.188 -> tail 8
18:01:22.188 -> chksum 0x2d
18:01:22.188 -> csum 0x2d
18:01:22.188 -> v8b899c12
18:01:22.188 -> ~ld
18:01:22.223 -> Adafruit MQTT demo
18:01:22.223 ->
18:01:22.223 ->

Lochec
 
Posts: 4
Joined: Mon Oct 21, 2019 9:09 am

Re: Nothing works

by brubell on Mon Oct 21, 2019 3:53 pm

What board are you using? I may be able to test if I have the same one.

Are you sure your AIO_USERNAME is correct and that your AIO_KEY is set to the latest active key on io.adafruit.com?

It looks like your ESP crashed. The exception cause is within the stackdump:
Code: Select all | TOGGLE FULL SIZE
18:01:22.151 -> >>>stack>>>
18:01:22.151 ->
18:01:22.151 -> ctx: cont
18:01:22.151 -> sp: 3ffffde0 end: 3fffffc0 offset: 01b0
18:01:22.151 -> 3fffff90: 3fffdad0 00000000 3ffee570 402011d4
18:01:22.151 -> 3fffffa0: 3fffdad0 00000000 3ffee570 4020344c
18:01:22.151 -> 3fffffb0: feefeffe feefeffe 3ffe8508 40100461
18:01:22.151 -> <<<stack<<<



It's possible to decode the error output by the ESP by installing the Exception Decoder (https://github.com/me-no-dev/EspExceptionDecoder). Could you try installing this Arduino IDE plugin, re-producing the error, and pasting the output here?

brubell
 
Posts: 609
Joined: Fri Jul 17, 2015 10:33 pm

Please be positive and constructive with your questions and comments.