可以与树莓派合体的FPGA开发板

from PyQt5.QtWidgets import (QWidget, QApplication, QDesktopWidget, QLabel, QGridLayout, QComboBox, QSpinBox, QPushButton) from PyQt5.QtCore import Qt, QBasicTimer from PyQt5.QtGui import QFont import sys import numpy as np from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FC from MyDataRom import * import matplotlib.pyplot as plt from MyWSPI import * from MyWiringPiSPI import * from CZTAlgorithm import * plt.rcParams['axes.unicode_minus'] = False class Oscilloscope(QWidget): def __init__(self): super().__init__() self.s = MyWiringPiSPI() self.w = MyWSPI() self.c = CZTAlgorithm() self.resultQLabel = QLabel('频率为:') self.f_sample = 100e6 self.point_sample = 1 self.timer = QBasicTimer() #self.timer.start(2000, self) if self.timer.isActive(): self.timer.stop() self.fig = plt.figure(figsize=(10, 4), dpi=80) self.canvas = FC(self.fig) self.ax = self.fig.add_subplot('111') self.ax.set_xlabel('UNIT : MicroSecond', fontsize=20) self.ax.axis(ymin=-2100, ymax=2100) self.initUI() def initUI(self): def update_param(sss): self.point_sample = int(sss) print(self.point_sample) def update_gain(g): self.s.trans_reg([5,int((g+5)/3)]) rateQLabel = QLabel('采样频率选择') rateQLabel.setFont(QFont('Serif', 20)) rateQLabel.setAlignment(Qt.AlignCenter) rateQLabel.setMinimumSize(200, 1) rateQLabel.setMaximumSize(200, 500) rateQLabel.setStyleSheet("QWidget { background-color: #ffffb8 }") rateQComoBox = QComboBox(self) rateQComoBox.addItem("100MSPS") rateQComoBox.setFont(QFont('Serif', 30)) rateQComoBox.setMinimumSize(200, 1) rateQComoBox.setMaximumSize(200, 500) rateQComoBox.setStyleSheet("QWidget { background-color: #ffffb8 }") gainQLabel = QLabel('AD8369\n增益选择(dB)') gainQLabel.setFont(QFont('Serif', 20)) gainQLabel.setAlignment(Qt.AlignCenter) gainQLabel.setMinimumSize(200, 1) gainQLabel.setMaximumSize(200, 500) gainQLabel.setStyleSheet("QWidget { background-color: #ffffb8 }") gainQSpinBox = QSpinBox() gainQSpinBox.setRange(-5, 40) # 设置范围 gainQSpinBox.setSingleStep(3) # 设置步长 gainQSpinBox.setValue(-5) # 设置spinbox的值 update_gain(-5) gainQSpinBox.setFont(QFont('Serif', 30)) gainQSpinBox.setMinimumSize(200, 1) gainQSpinBox.setMaximumSize(200, 500) gainQSpinBox.setStyleSheet("QWidget { background-color: #ffffb8 }") gainQSpinBox.valueChanged[int].connect(update_gain) pointQLabel = QLabel('相参积累次数') pointQLabel.setFont(QFont('Serif', 20)) pointQLabel.setAlignment(Qt.AlignCenter) pointQLabel.setMinimumSize(200, 1) pointQLabel.setMaximumSize(200, 500) pointQLabel.setStyleSheet("QWidget { background-color: #ffffb8 }") pointQComoBox = QComboBox(self) pointQComoBox.addItem("1") pointQComoBox.addItem("10") pointQComoBox.addItem("50") pointQComoBox.addItem("100") pointQComoBox.setFont(QFont('Serif', 30)) pointQComoBox.setMinimumSize(200, 1) pointQComoBox.setMaximumSize(200, 500) pointQComoBox.setStyleSheet("QWidget { background-color: #ffffb8 }") pointQComoBox.activated[str].connect(update_param) self.resultQLabel.setFont(QFont('Serif', 40)) self.resultQLabel.setAlignment(Qt.AlignCenter) self.resultQLabel.setMinimumSize(800, 1) self.resultQLabel.setMaximumSize(800, 500) self.resultQLabel.setStyleSheet("QWidget { background-color: #ffffb8 }") self.switchQPushButton = QPushButton('Start', self) self.switchQPushButton.setFont(QFont('Serif', 30)) self.switchQPushButton.setMinimumSize(200, 1) self.switchQPushButton.setMaximumSize(200, 500) self.switchQPushButton.setStyleSheet("QWidget { background-color: #ff0000 }") self.switchQPushButton.clicked.connect(self.doAction) grid = QGridLayout() grid.addWidget(self.resultQLabel, 1, 1, 1, 1) grid.addWidget(self.switchQPushButton, 1, 2, 1, 1) grid.addWidget(self.canvas, 2, 1, 5, 2) grid.addWidget(rateQLabel, 1, 3, 1, 1) grid.addWidget(rateQComoBox, 2, 3, 1, 1) grid.addWidget(gainQLabel, 3, 3, 1, 1) grid.addWidget(gainQSpinBox, 4, 3, 1, 1) grid.addWidget(pointQLabel, 5, 3, 1, 1) grid.addWidget(pointQComoBox, 6, 3, 1, 1) cc = QDesktopWidget().availableGeometry() cc.setY(cc.top()+50) self.setGeometry(cc) self.setLayout(grid) self.setWindowTitle('Oscilloscope') self.my_paint() def my_paint(self): self.ax.cla() y = self.w.fifo_sample(int(self.point_sample*400)) x = np.linspace(0, (len(y)-1)/self.f_sample, len(y)) x = x * 1e6 self.ax.plot(np.real(x), np.real(y)) self.ax.set_xlabel('UNIT : MicroSecond', fontsize=20, verticalalignment='bottom') self.ax.axis(ymin=-2100, ymax=2100) self.canvas.draw() # 绘制 hp = self.c.fft_czt(y) di = hp*6/1e6 self.resultQLabel.setText('频率为: ' + '%.1f Hz' % hp) def timerEvent(self, e): self.my_paint() def doAction(self): if self.timer.isActive(): self.timer.stop() self.switchQPushButton.setText('Start') self.switchQPushButton.setStyleSheet("QWidget { background-color: #ff0000 }") else: self.timer.start(1000, self) self.switchQPushButton.setText('Stop') self.switchQPushButton.setStyleSheet("QWidget { background-color: #00ff00 }") if __name__ == '__main__': app = QApplication(sys.argv) ex = Oscilloscope() ex.show() sys.exit(app.exec_())