I am not good at c/c++. I wanted to implement my own source codes (for example SPI with registers) so in the source folder of the project with main.c, I have mySPI.cpp and mySPI.h file. I added #include <mySPI.h> to main.c but it cannot see the functions.
If i call one of the function like SPI_Configure() from mySPI.cpp it says "undefined reference to SPI_Configure"
It is a simple question but i need help.