RP2040 seems to work fine about arduino-mqtt HOT 2 OPEN

Would you be up for contributing an example for the RP2024?

from arduino-mqtt.

the examples run out of the box, no midifications needed. You have to use the earlephilhower/arduino-pico and just compile.

For Platformio here an example configuration:

[env:BOARD_RP2040_PICO_W]
platform = https://github.com/maxgerhardt/platform-raspberrypi.git
platform_packages = framework-arduinopico@https://github.com/earlephilhower/arduino-pico.git
board = rpipicow
board_build.core = earlephilhower
board_build.filesystem_size = 0.5m

the arduino core mimics the ESP32 core. so just include wifi: #include <WiFi.h>

from arduino-mqtt.