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STM32是以Cortex-M3为核的处理器,该例程介绍STM32下如何对SPI进行操作。SPI适合于较长距离,高速通信。如SD,解码芯片等等。-Cortex-M3 based STM32-core processor for the routine introduction STM32 how to operate on the SPI. SPI is suitable for long distance, high-speed communications. Such as SD, decoder chip and so on.