Errors with ITEADLIB_Nextion

[ScruffR]

@Michele

../../../build/target/user/platform-6/libuser.a(NexHardware.o): In function sendCommand(char const*)': lib/ITEADLIB_Nextion/src/NexHardware.cpp:189: undefined reference to nexSerial'

You need to look in the samples how to use the lib.

All the samples feature a line

USARTSerial& nexSerial = Serial1;

This is required to allow to use other serial ports too.