I've opened an AVR C++ project in Atmel Studio. I want to use an Ardunio library to drive a TFT screen. After adding the library I've noticed the header file calls for SPI.H and according to the function calls it is the Arduino library. I have added the SPI library using right click -> add Arduino library and it added SPI.h and SPI.cpp. SPI.h in including Arduino.h which it not found.
Are there additional steps in adding an Arduino library? The file itself is not found in the Arduino folder BTW.