通过并口来模拟SPI 接口， 实现SPI接口的收发。 -Through the parallel port to simulate the SPI interface.

并口控制代码,可以收发并口数据，需要将winio.dll,winio.lib加载到工程中去编译-Parallel control code, you can send and receive data in parallel, you need to winio.dll, winio.lib loaded into the project to compile