Using PubSubClient with WiFiManager #15

lunanigra · 2015-12-01T22:24:45Z

Hello, can you give some hints how to use PubSubClient with your WiFiManager?

To init the PubSubClient a WiFiClient is given as parameter...
WiFiClient espClient;
PubSubClient client(espClient);

Works simple and fine. But how to retrieve a PubSubClient instance when using WiFiManager? If you recommend a different MQTT library it would be fine for me as well.

Thanks, Jan Christian

tzapu · 2015-12-03T18:35:26Z

Hi Jan,
Just use it as you mentioned above.

WiFiClient espClient;
PubSubClient client(espClient);

WiFiManager is active only during the startup phase. after it connects, you can build your app as normal.
WiFiClient does not have any direct connection or dependency on WiFiManager

tzapu · 2015-12-09T05:11:39Z

@lunanigra is it ok? did you get it running in the end?

lunanigra · 2015-12-09T21:41:50Z

Hi! Thanks for your support.
Don't know what I did wrong last time; but it works :-)

Not sure if already fixed... When I tested the WifiManager few weeks ago some Wifi networks got listed twice. Nothing serious...

tzapu · 2015-12-10T12:55:12Z

hi, no problem,

have not seen that happening. if it becomes an issue please open another issue/

cheers

MyIoT01 · 2016-05-16T06:55:24Z

Hi Tzapu,

First of all, thank you for your library that gave all of us. I also can't work out pubsubclient with wifi manager. Can you give me an example how to work out with it. Below code that i gave executed but doesn't work. Any help will be greatly appreciated.

`#include`` <ESP8266WiFi.h> //https://github.com/esp8266/Arduino
#include <PubSubClient.h>

//needed for library
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h> //https://github.com/tzapu/WiFiManager

const char* mqtt_server = "myadress.com";

WiFiClient espClient;
PubSubClient espClient;

//needed for library
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h> //https://github.com/tzapu/WiFiManager

void callback(char* topic, byte* payload, unsigned int length) {
Serial.print("Message arrived [");
Serial.print(topic);
Serial.print("] ");
for (int i = 0; i < length; i++) {
Serial.print((char)payload[i]);
}
Serial.println();

// Switch on the LED if an 1 was received as first character
if ((char)payload[0] == '1') {
digitalWrite(BUILTIN_LED, LOW); // Turn the LED on (Note that LOW is the voltage level
// but actually the LED is on; this is because
// it is acive low on the ESP-01)
} else {
digitalWrite(BUILTIN_LED, HIGH); // Turn the LED off by making the voltage HIGH
}

}

void reconnect() {
// Loop until we're reconnected
while (!client.connected()) {
Serial.print("Attempting MQTT connection...");
// Attempt to connect
if (client.connect("ESP8266Client")) {
Serial.println("connected");
// Once connected, publish an announcement...
client.publish("outTopic", "hello world");
// ... and resubscribe
client.subscribe("inTopic");
} else {
Serial.print("failed, rc=");
Serial.print(client.state());
Serial.println(" try again in 5 seconds");
// Wait 5 seconds before retrying
delay(5000);
}
}
}

void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
client.setServer(mqtt_server, 1883);
client.setCallback(callback);

//WiFiManager
//Local intialization. Once its business is done, there is no need to keep it around
WiFiManager wifiManager;
//reset saved settings
//wifiManager.resetSettings();

//set custom ip for portal
//wifiManager.setAPConfig(IPAddress(10,0,1,1), IPAddress(10,0,1,1), IPAddress(255,255,255,0));

//fetches ssid and pass from eeprom and tries to connect
//if it does not connect it starts an access point with the specified name
//here  "AutoConnectAP"
//and goes into a blocking loop awaiting configuration
wifiManager.autoConnect("AutoConnectAP");
//or use this for auto generated name ESP + ChipID
//wifiManager.autoConnect();


//if you get here you have connected to the WiFi
Serial.println("connected...yeey :)");

}

void loop() {
// put your main code here, to run repeatedly:
if (!client.connected()) {
reconnect();
}
client.loop();

long now = millis();
if (now - lastMsg > 2000) {
lastMsg = now;
++value;
snprintf (msg, 75, "hello world #%ld", value);
Serial.print("Publish message: ");
Serial.println(msg);
client.publish("outTopic", msg);
}

}

``

muntakson · 2016-06-15T14:10:14Z

Ho tzapu.
Thanks for your wifimanager.
I had the problem. The mqtt connection is not reliable with WifiManager.
My code is almost same abov except i added client.loop() at the end.

Bob

muntakson · 2016-06-15T14:10:14Z

Ho tzapu.
Thanks for your wifimanager.
I had the problem. The mqtt connection is not reliable with WifiManager.
My code is almost same abov except i added client.loop() at the end.

Bob

LeonVos · 2017-07-15T09:29:30Z

This should work: (ref to your MQTTserver)

WiFiClient wclient;
PubSubClient client(wclient, mqttserver);

amrithmmh · 2019-05-31T07:37:40Z

Hi! Thanks for your support.
Don't know what I did wrong last time; but it works :-)

Not sure if already fixed... When I tested the WifiManager few weeks ago some Wifi networks got listed twice. Nothing serious...

can you share your code ?...how to get it working?

amrithmmh · 2019-05-31T07:38:03Z

This should work: (ref to your MQTTserver)

WiFiClient wclient;
PubSubClient client(wclient, mqttserver);

does not work .It throws error

mediaDS · 2021-01-25T00:04:05Z

Hi

Neither PubSubClient client(espClient); nor PubSubClient client(wclient, mqttserver); works. Both throw lenghty error messages. I am using PlatformIO and a ESP8266 board. If I use PubSubClient client; it compiles without erros but the code crashes as soon as I enter the reconnect loop. The ESP8266 just restarts. So, is there any way to use both libs together?

Edit (I forgot the logs):

PubSubClient client(wclient, mqttserver);

src/Werner.cpp:28:40: error: no matching function for call to 'PubSubClient::PubSubClient(WiFiManager&, const char*&)'
 PubSubClient client(Werner, mqtt_server);
                                        ^
src/Werner.cpp:28:40: note: candidates are:
In file included from src/Werner.cpp:5:0:
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:129:4: note: PubSubClient::PubSubClient(const char*, uint16_t, std::function<void(char*, unsigned char*, unsigned int)>, Client&, Stream&)
    PubSubClient(const char*, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client, Stream&);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:129:4: note:   candidate expects 5 arguments, 2 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:128:4: note: PubSubClient::PubSubClient(const char*, uint16_t, std::function<void(char*, unsigned char*, unsigned int)>, Client&)
    PubSubClient(const char*, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:128:4: note:   candidate expects 4 arguments, 2 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:127:4: note: PubSubClient::PubSubClient(const char*, uint16_t, Client&, Stream&)
    PubSubClient(const char*, uint16_t, Client& client, Stream&);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:127:4: note:   candidate expects 4 arguments, 2 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:126:4: note: PubSubClient::PubSubClient(const char*, uint16_t, Client&)
    PubSubClient(const char*, uint16_t, Client& client);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:126:4: note:   candidate expects 3 arguments, 2 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:125:4: note: PubSubClient::PubSubClient(uint8_t*, uint16_t, std::function<void(char*, unsigned char*, unsigned int)>, Client&, Stream&)
    PubSubClient(uint8_t *, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client, Stream&);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:125:4: note:   candidate expects 5 arguments, 2 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:124:4: note: PubSubClient::PubSubClient(uint8_t*, uint16_t, std::function<void(char*, unsigned char*, unsigned int)>, Client&)
    PubSubClient(uint8_t *, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:124:4: note:   candidate expects 4 arguments, 2 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:123:4: note: PubSubClient::PubSubClient(uint8_t*, uint16_t, Client&, Stream&)
    PubSubClient(uint8_t *, uint16_t, Client& client, Stream&);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:123:4: note:   candidate expects 4 arguments, 2 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:122:4: note: PubSubClient::PubSubClient(uint8_t*, uint16_t, Client&)
    PubSubClient(uint8_t *, uint16_t, Client& client);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:122:4: note:   candidate expects 3 arguments, 2 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:121:4: note: PubSubClient::PubSubClient(IPAddress, uint16_t, std::function<void(char*, unsigned char*, unsigned int)>, Client&, Stream&)
    PubSubClient(IPAddress, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client, Stream&);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:121:4: note:   candidate expects 5 arguments, 2 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:120:4: note: PubSubClient::PubSubClient(IPAddress, uint16_t, std::function<void(char*, unsigned char*, unsigned int)>, Client&)
    PubSubClient(IPAddress, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:120:4: note:   candidate expects 4 arguments, 2 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:119:4: note: PubSubClient::PubSubClient(IPAddress, uint16_t, Client&, Stream&)
    PubSubClient(IPAddress, uint16_t, Client& client, Stream&);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:119:4: note:   candidate expects 4 arguments, 2 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:118:4: note: PubSubClient::PubSubClient(IPAddress, uint16_t, Client&)
    PubSubClient(IPAddress, uint16_t, Client& client);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:118:4: note:   candidate expects 3 arguments, 2 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:117:4: note: PubSubClient::PubSubClient(Client&)
    PubSubClient(Client& client);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:117:4: note:   candidate expects 1 argument, 2 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:116:4: note: PubSubClient::PubSubClient()
    PubSubClient();
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:116:4: note:   candidate expects 0 arguments, 2 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:88:7: note: PubSubClient::PubSubClient(const PubSubClient&)
 class PubSubClient : public Print {
       ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:88:7: note:   candidate expects 1 argument, 2 provided
*** [.pio/build/esp12e/src/Werner.cpp.o] Error 1

PubSubClient client(espClient);

src/Werner.cpp:28:30: error: no matching function for call to 'PubSubClient::PubSubClient(WiFiManager&)'
 PubSubClient client(espClient);
                              ^
src/Werner.cpp:28:30: note: candidates are:
In file included from src/Werner.cpp:5:0:
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:129:4: note: PubSubClient::PubSubClient(const char*, uint16_t, std::function<void(char*, unsigned char*, unsigned int)>, Client&, Stream&)
    PubSubClient(const char*, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client, Stream&);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:129:4: note:   candidate expects 5 arguments, 1 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:128:4: note: PubSubClient::PubSubClient(const char*, uint16_t, std::function<void(char*, unsigned char*, unsigned int)>, Client&)
    PubSubClient(const char*, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:128:4: note:   candidate expects 4 arguments, 1 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:127:4: note: PubSubClient::PubSubClient(const char*, uint16_t, Client&, Stream&)
    PubSubClient(const char*, uint16_t, Client& client, Stream&);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:127:4: note:   candidate expects 4 arguments, 1 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:126:4: note: PubSubClient::PubSubClient(const char*, uint16_t, Client&)
    PubSubClient(const char*, uint16_t, Client& client);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:126:4: note:   candidate expects 3 arguments, 1 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:125:4: note: PubSubClient::PubSubClient(uint8_t*, uint16_t, std::function<void(char*, unsigned char*, unsigned int)>, Client&, Stream&)
    PubSubClient(uint8_t *, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client, Stream&);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:125:4: note:   candidate expects 5 arguments, 1 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:124:4: note: PubSubClient::PubSubClient(uint8_t*, uint16_t, std::function<void(char*, unsigned char*, unsigned int)>, Client&)
    PubSubClient(uint8_t *, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:124:4: note:   candidate expects 4 arguments, 1 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:123:4: note: PubSubClient::PubSubClient(uint8_t*, uint16_t, Client&, Stream&)
    PubSubClient(uint8_t *, uint16_t, Client& client, Stream&);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:123:4: note:   candidate expects 4 arguments, 1 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:122:4: note: PubSubClient::PubSubClient(uint8_t*, uint16_t, Client&)
    PubSubClient(uint8_t *, uint16_t, Client& client);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:122:4: note:   candidate expects 3 arguments, 1 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:121:4: note: PubSubClient::PubSubClient(IPAddress, uint16_t, std::function<void(char*, unsigned char*, unsigned int)>, Client&, Stream&)
    PubSubClient(IPAddress, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client, Stream&);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:121:4: note:   candidate expects 5 arguments, 1 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:120:4: note: PubSubClient::PubSubClient(IPAddress, uint16_t, std::function<void(char*, unsigned char*, unsigned int)>, Client&)
    PubSubClient(IPAddress, uint16_t, MQTT_CALLBACK_SIGNATURE,Client& client);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:120:4: note:   candidate expects 4 arguments, 1 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:119:4: note: PubSubClient::PubSubClient(IPAddress, uint16_t, Client&, Stream&)
    PubSubClient(IPAddress, uint16_t, Client& client, Stream&);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:119:4: note:   candidate expects 4 arguments, 1 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:118:4: note: PubSubClient::PubSubClient(IPAddress, uint16_t, Client&)
    PubSubClient(IPAddress, uint16_t, Client& client);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:118:4: note:   candidate expects 3 arguments, 1 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:117:4: note: PubSubClient::PubSubClient(Client&)
    PubSubClient(Client& client);
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:117:4: note:   no known conversion for argument 1 from 'WiFiManager' to 'Client&'
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:116:4: note: PubSubClient::PubSubClient()
    PubSubClient();
    ^
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:116:4: note:   candidate expects 0 arguments, 1 provided
.pio/libdeps/esp12e/PubSubClient/src/PubSubClient.h:88:7: note: PubSubClient::PubSubClient(const PubSubClient&)
 class PubSubClient : public Print {

tzapu closed this as completed Dec 10, 2015

toblum mentioned this issue Jul 8, 2017

MQTT for WS2812FX working toblum/McLighting#26

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Using PubSubClient with WiFiManager #15

Using PubSubClient with WiFiManager #15

lunanigra commented Dec 1, 2015

tzapu commented Dec 3, 2015

tzapu commented Dec 9, 2015

lunanigra commented Dec 9, 2015

tzapu commented Dec 10, 2015

MyIoT01 commented May 16, 2016 •

edited

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muntakson commented Jun 15, 2016

muntakson commented Jun 15, 2016

LeonVos commented Jul 15, 2017

amrithmmh commented May 31, 2019

amrithmmh commented May 31, 2019

mediaDS commented Jan 25, 2021 •

edited

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Using PubSubClient with WiFiManager #15

Using PubSubClient with WiFiManager #15

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lunanigra commented Dec 1, 2015

tzapu commented Dec 3, 2015

tzapu commented Dec 9, 2015

lunanigra commented Dec 9, 2015

tzapu commented Dec 10, 2015

MyIoT01 commented May 16, 2016 • edited Loading

muntakson commented Jun 15, 2016

muntakson commented Jun 15, 2016

LeonVos commented Jul 15, 2017

amrithmmh commented May 31, 2019

amrithmmh commented May 31, 2019

mediaDS commented Jan 25, 2021 • edited Loading

MyIoT01 commented May 16, 2016 •

edited

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mediaDS commented Jan 25, 2021 •

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