该文件是dds工程，用的是单片机和FPGA开发板组合实现对存储在FPGA中rom里面的波形数据的，调频率（调频范围是1-1MHz），波形在示波器上显示，单片机实现控制字的发送及控制频率，FPGA实现控制字的接收和存储波形数据,输出波形(The file is a　DDS project. It is a combination of single chip microcomputer and FPGA development board to realize the amplitude modulation of the waveform data stored in the ROM in FPGA. The frequency modulation rate, the waveform shows on the oscilloscope, the MCU realizes the transmission of the control word, and the FPGA realizes the receiving and storing the waveform data of the control word.)