Attiny85 doesnt have hardware SPI, but it has a USI (universal serial interface) which can be programmed to use SPI. Look in google for "attiny usi spi", there are some examples that will help you. (You may want to set attiny speed to 8 mhz.)
Attiny85 doesnt have hardware SPI, but it has a USI (universal serial interface) which can be programmed to use SPI. Look in google for "attiny usi spi", there are some examples that will help you. (You may want to set attiny speed to 8 mhz.)