读取串口数据，将数据傅里叶变换（FFT）后实时显示频谱图（python）
读取串口并将数据添加到定义的变量中，该变量经过 FFT 并显示实时更新的图。from pyqtgraph.Qt import QtGui, QtCoreimport numpy as npimport pyqtgraph as pgfrom pyqtgraph.ptime import timeimport serialimport timefrom scipy import fftpackglobal data_displayapp = QtGui.QApplication([])
