AVR单片机spi接口库。几乎可以用于ATMEL全系列AVR8位单片机。可用于ATMEGA328P、ATMEGA8u2等。-AVR microcontroller spi interface library

This code has been written in C for Atmel devices, it is for a programmable 4x4x4 3D Led Cube, you can program it using you PC serial monitor to do the sequence you like the most.