利用C8051F31x的SMBus总线实现对射频读写芯片的基本读写，并将读写的结果通过串行接口传送 到PC端的演示程序显示出来-Use of the SMBus bus C8051F31x RF reader chip to realize the basic reading and writing, and reading and writing the result of transmission through the serial interface to the PC client d