SPI???

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Can someone help me set up SPI connection(schematic and code) between two artiny2313? I've read the SPI setup app note but they don't really have any of the registers listed, and it is the most confusing app note I have every read. Also what is the differance between UART and SPI and 3 Wire?

Life Is Like A Bucket Of Chicken.

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The SPI application note was no help because the ATtiny2313 has no SPI module. It has a USI module instead, which requires specific software to make it do any SPI functions.

http://www.atmel.com/dyn/resourc...
http://www.atmel.com/dyn/resourc...