可以在processing中运行的FFT，利用串口发送采集的数据，然后交给processing处理显示波形。-You can run the processing FFT, using the serial port to send the collected data, and then to processing processing and display waveforms.

通过对串口数据接收所得数据文件进行处理，进行FFT变换，绘制伯德图，并实现数据到正弦波形显示。(The data files received by the serial port are processed, the FFT transform is carried out, the Bode diagram is drawn, and the data is displayed to the sinusoidal waveform.)