Trying to link a sketch that is made up of four files. The two error msg's are: " multiple definition of var_1' " and " multiple definition of var_2' " Here is the code for all four files: /* FILE: multi_file.ino */ #include "multi_file.h" void setup() { } void loop() { fnc_1(); fnc_2(); }…

Multiple definition of a variable in a multi-file sketch

gfvalvo November 26, 2017, 8:37pm 3

DECLARE the variables as 'extern' in the .h file.
DEFINE them in one (and only one) of the .cpp files.

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