通过SPI接口读写EEPROM的时序代码，需要注意不同型号的EEPROM支持不同的SPI数据格式，有些EEPROM手册的内容有错误，需要多次试验确定EEPROM支持的SPI数据格式。-literacy through SPI EEPROM timing code, need attention to the different models of EEPROM support different data formats SPI, some of the contents of EEPROM manual errors tests to determine the need to support the SPI EEPROM data formats.