MQTT Library Issues

[Opiron]

Hello Adafruit, I have an Arduino Uno Wifi Rev.2 and I am trying to use your MQTT Library for posting data to Adafruit IO. Library version is 1.3.0. Problems I have when I try to compile:

Arduino:1.8.13 (Windows 10), Tarjeta:"Arduino Uno WiFi Rev2, None (ATMEGA4809)"

In file included from C:\Users\xxx\Documents\Arduino\libraries\Adafruit_MQTT_Library\Adafruit_MQTT.h:25:0,

from C:\Users\xxx\Documents\Arduino\libraries\Adafruit_MQTT_Library\Adafruit_MQTT.cpp:22:

C:\Users\xxx\Documents\Arduino\libraries\Adafruit_MQTT_Library\Adafruit_MQTT.cpp: In member function 'const arduino::__FlashStringHelper* Adafruit_MQTT::connectErrorString(int8_t)':

C:\Users\xxx\AppData\Local\Arduino15\packages\arduino\hardware\megaavr\1.8.6\cores\arduino/Arduino.h:30:20: error: cannot convert 'const char' to 'const arduino::__FlashStringHelper' in return

define F(str) (str)

^

C:\Users\xxx\Documents\Arduino\libraries\Adafruit_MQTT_Library\Adafruit_MQTT.cpp:278:12: note: in expansion of macro 'F'

return F(

^

C:\Users\xxx\AppData\Local\Arduino15\packages\arduino\hardware\megaavr\1.8.6\cores\arduino/Arduino.h:30:20: error: cannot convert 'const char' to 'const arduino::__FlashStringHelper' in return

define F(str) (str)

^

C:\Users\xxx\Documents\Arduino\libraries\Adafruit_MQTT_Library\Adafruit_MQTT.cpp:281:12: note: in expansion of macro 'F'

return F(

^

C:\Users\xxx\AppData\Local\Arduino15\packages\arduino\hardware\megaavr\1.8.6\cores\arduino/Arduino.h:30:20: error: cannot convert 'const char' to 'const arduino::__FlashStringHelper' in return

define F(str) (str)

^

C:\Users\xxx\Documents\Arduino\libraries\Adafruit_MQTT_Library\Adafruit_MQTT.cpp:284:12: note: in expansion of macro 'F'

return F("The MQTT service is unavailable");

^

C:\Users\xxx\AppData\Local\Arduino15\packages\arduino\hardware\megaavr\1.8.6\cores\arduino/Arduino.h:30:20: error: cannot convert 'const char' to 'const arduino::__FlashStringHelper' in return

define F(str) (str)

^

C:\Users\xxx\Documents\Arduino\libraries\Adafruit_MQTT_Library\Adafruit_MQTT.cpp:286:12: note: in expansion of macro 'F'

return F("The data in the user name or password is malformed");

^

C:\Users\xxx\AppData\Local\Arduino15\packages\arduino\hardware\megaavr\1.8.6\cores\arduino/Arduino.h:30:20: error: cannot convert 'const char' to 'const arduino::__FlashStringHelper' in return

define F(str) (str)

^

C:\Users\xxx\Documents\Arduino\libraries\Adafruit_MQTT_Library\Adafruit_MQTT.cpp:288:12: note: in expansion of macro 'F'

return F("Not authorized to connect");

^

C:\Users\xxx\AppData\Local\Arduino15\packages\arduino\hardware\megaavr\1.8.6\cores\arduino/Arduino.h:30:20: error: cannot convert 'const char' to 'const arduino::__FlashStringHelper' in return

define F(str) (str)

^

C:\Users\xxx\Documents\Arduino\libraries\Adafruit_MQTT_Library\Adafruit_MQTT.cpp:290:12: note: in expansion of macro 'F'

return F("Exceeded reconnect rate limit. Please try again later.");

^

C:\Users\xxx\AppData\Local\Arduino15\packages\arduino\hardware\megaavr\1.8.6\cores\arduino/Arduino.h:30:20: error: cannot convert 'const char' to 'const arduino::__FlashStringHelper' in return

define F(str) (str)

^

C:\Users\xxx\Documents\Arduino\libraries\Adafruit_MQTT_Library\Adafruit_MQTT.cpp:292:12: note: in expansion of macro 'F'

return F("You have been banned from connecting. Please contact the MQTT "

^

C:\Users\xxx\AppData\Local\Arduino15\packages\arduino\hardware\megaavr\1.8.6\cores\arduino/Arduino.h:30:20: error: cannot convert 'const char' to 'const arduino::__FlashStringHelper' in return

define F(str) (str)

^

C:\Users\xxx\Documents\Arduino\libraries\Adafruit_MQTT_Library\Adafruit_MQTT.cpp:295:12: note: in expansion of macro 'F'

return F("Connection failed");

^

C:\Users\xxx\AppData\Local\Arduino15\packages\arduino\hardware\megaavr\1.8.6\cores\arduino/Arduino.h:30:20: error: cannot convert 'const char' to 'const arduino::__FlashStringHelper' in return

define F(str) (str)

^

C:\Users\xxx\Documents\Arduino\libraries\Adafruit_MQTT_Library\Adafruit_MQTT.cpp:297:12: note: in expansion of macro 'F'

return F("Failed to subscribe");

^

C:\Users\xxx\AppData\Local\Arduino15\packages\arduino\hardware\megaavr\1.8.6\cores\arduino/Arduino.h:30:20: error: cannot convert 'const char' to 'const arduino::__FlashStringHelper' in return

define F(str) (str)

^

C:\Users\xxx\Documents\Arduino\libraries\Adafruit_MQTT_Library\Adafruit_MQTT.cpp:299:12: note: in expansion of macro 'F'

return F("Unknown error");

^

exit status 1

Error compilando para la tarjeta Arduino Uno WiFi Rev2.

[BirBDey]

Did anyone else had this issue?

[PM-o-428]

Same issue. Any solution?

[brentru]

@BirBDey @PM-o-428 @Opiron Are you all running the Arduino Uno WiFi Rev2?

[PM-o-428]

@brentru No. I am using ESP32 Devkit V4 on platform IO with Arduino Framework. Issue fixed after removing all "F"s after the return.

[brentru]

This issue should be fixed in the latest release.

Please upgrade to Adafruit IO Arduino version 4.2.5 (https://github.com/adafruit/Adafruit_IO_Arduino/releases/tag/4.2.5) and also upgrade Adafruit MQTT library to the latest version.