I2C or SPI communication this is the question!
Serial Peripheral Interface Bus (SPI) was established by Motorola and Inter Integrated Circuit (I2C) was invented by Philips. So the main protocols to consider are: SPI protocol and I2C protocol.

I am continuing with the intention to realize a BLOG truly complete on electronics, that would avoid waste of time searching on the net, I understand that is a HEAVY job!

The time that I have is not so long and in order to make a library with project guides (like: WHAT DO YOU WANT TO DESIGN(PLAN) TODAY?) it takes a while.