430用IO口模拟SPI读写的驱动程序。包括SPI的字节读写，区块数据的读写等功能...

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430用IO口模拟SPI读写的驱动程序。包括SPI的字节读写，区块数据的读写等功能-430 IO I used to read and write the simulation SPI driver. SPI including the byte read and write, read and write data blocks, such as functional