I did the leg work to get this board working in platformio. Here is the platformio.ini file that allowed me to compile the mqtt example for this board
platform = atmelmegaavr
board = AVR64DB48
upload_protocol = pkobn_updi
upload_flags = -F
framework = arduino
lib_deps =
https://github.com/microchip-pic-avr-solutions/avr-iot-cellular-arduino-library```
I also had to add #include <Wire.h> in at the top of the file just below Arduino.h
I did the leg work to get this board working in platformio. Here is the platformio.ini file that allowed me to compile the mqtt example for this board