No, that’s just the final “aww linking failed :(” message, the actual error messages are above that, e.g. “multiple definition of…” / “undefined reference to…”. However even if you didn’t give us the actual error message, we can figure out the problem from your code…
Not indented correctly.
lib_deps =
adafruit/TinyLoRa @ ^1.4.0
Oh no. No defining global variables within a header file if there are multiple users of the header file. You need to refactor it so that the header file only has
extern int max31865CS; // CS Pin for MAX31865
and the max31865.cpp file has
int max31865CS = 0;
This otherwise leads to “multiple definition of…” linker errors.
This has been discussed at e.g. A new PlatformIO user coding wrong, getting multiple definition & first defined here errors - #2 by maxgerhardt.