Taking W77E58 and MAX3100 as example, the paper introduces a method of using I/O interface of singlechip to simulate Serial Peripheral Interface (SPI) at first.
以W77E58和MAX3100芯片为例，首先介绍了一种利用单片机I/O接口软件模拟串行外设接口（SPI）的方法。
The serial peripheral interface (SPI) is a standard communication protocol, which is used in many fields.
串行SPI通信协议是一种标准的通信协议，很多场合下都是采用这种机制。
The serial peripheral interface (SPI) is a standard communication protocol, which is used in many fields.
串行SPI通信协议是一种标准的通信协议，很多场合下都是采用这种机制。
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