实现spi接口的传输，并多外接EEPROM读写数据-Spi interface to achieve the transfer, and multiple external EEPROM read and write data

spi接口的eeprom模型，型号为st公司m65pxx(The eeprom model of spi interface is st company m65pxx)

该代码完成存储器的数据存储和读取功能，该芯片是一款Atmel的SPI接口的EEPROM存储芯片。(The code completes the memory data storage and reading function, the chip is a Atmel SPI interface EEPROM memory chip.)

串行外设接口 <SPI>模块是一个同步串行接口,可用于与其他外设或者单片机进行通信。这些外设可以是串行EEPROM、移位寄存器、显示驱动器和A/D转换器等。SPI模块与Motorola的SPI和STOP接口兼容。(The serial peripheral interface <SPI> module is a synchronous serial interface, which can be used to communicate with other periph