该代码是为了配合VERILOG的测试，用C++模拟SPI4.2接口的时序功能，需要编译成.dll配合verilog仿真工具一起使用。-The code is in line with VERILOG test, using C++ simulation SPI4.2 interface timing functions, needs to be compiled into a. Dll with the verilog simulation tools.