Quote Originally Posted by flotulopex View Post
Does SPI require always 2 way communication setup? I don't see my display sending some data back to the PIC, does it?
Yes, the display can send some data back to the PIC. I don't know about this particular display, but most GLCD can send data back to the PIC. This data can be anything from a Register value to the RGB value of the pixels that are been displayed in the screen.

However, if you prefer you can hardwire the display for write-only.

Robert