实现fpga与单片机通信，单片机修改一个特定寄存器的值，并数码管显示，fpga给mcu传递一组数值，mcu再通过lcd显示-Communication with the microcontroller fpga implementation, microcontroller changes the value of a particular register, and digital display, fpga to pass a set of values ​ ​ mcu,

FSK（Frequency-shift keying）- 频移键控是利用载波的频率变化来传递数字信息。它是利用基带数字信号离散取值特点去键控载波频率以传递信息的一种数字调制技术。FSK（Frequency-shift keying）是信息传输中使用得较早的一种调制方式-FSK (Frequency-shift keying)- Frequency shift keying is the use of the carrier frequency to transmit digital inform