What is the role of the library SPI

Need Help With My Project
1

Hello i want to ask what is the role of the library SPI.h in a simple project.
what problems can be created if I remove it.

Thanks Nektarios

2

Read this:

https://www.arduino.cc/en/reference/SPI

Pete.

3

I can assume that if I don’t use a device or sensor that works with this protocol I can remove it from ny program.

Nektarios

4

Yes.
If you’re unsure then just comment it out and compile/upload your code. If it’s needed then you’ll soon find out and it’s a simple task to reinstate it.

Pete.

5

Thank you
Nektarios