This is a SPI bus to read and write procedures, suitable for beginners to use, e...

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这是一个SPI总线的读写程序，适合新手入门使用，简单易学，本人就是从这个简单例程开始学习AVR SPI的 希望对新人有帮助-This is a SPI bus to read and write procedures, suitable for beginners to use, easy to learn, my routine is to start from this simple study of the AVR SPI would like to help newcomers