Python|Python-Qt简单串口通讯 Python|Qt

一般来说，Pyqt5和Pyside2模块基本能够相互替换，但是我在后者的类中没有找到串口QtSerialPort类.有明白的同学希望能在评论交流，谢谢！
GUI界面
文章图片

.py代码

import sys from ui_serialPort import Ui_MainWindow from PyQt5 import QtCore, QtGui, QtWidgets, QtSerialPortclass MainWindow(QtWidgets.QMainWindow): def __init__(self): super(MainWindow, self).__init__() self.ui = Ui_MainWindow() self.ui.setupUi(self)self.serial = QtSerialPort.QSerialPort(self) self.ui.pushButton_send.setEnabled(False) self.ui.comboBox_baud.setCurrentIndex(1)self.slot_init()def slot_init(self): self.ui.pushButton_serial.clicked.connect(self.pushButton_serial_clicked) self.ui.pushButton_search.clicked.connect(self.pushButton_search_clicked) self.ui.pushButton_send.clicked.connect(self.pushButton_send_clicked) self.ui.pushButton_clear.clicked.connect(self.pushButton_clear_clicked) self.serial.readyRead.connect(self.serialPort_readyRead)def serialPort_readyRead(self): buffer = self.serial.read(1) print(buffer)buffer = str(buffer, encoding='utf-8') recStr = self.ui.textEdit_rece.toPlainText() recStr += buffer self.ui.textEdit_rece.clear() self.ui.textEdit_rece.append(recStr)def pushButton_send_clicked(self): data = https://www.it610.com/article/bytes(self.ui.textEdit_send.toPlainText(), encoding='utf-8') data = https://www.it610.com/article/QtCore.QByteArray(data) self.serial.write(data)def pushButton_clear_clicked(self): self.ui.textEdit_rece.clear()def pushButton_search_clicked(self): self.ui.comboBox_port.clear()for i in QtSerialPort.QSerialPortInfo.availablePorts():# 静态函数 self.ui.comboBox_port.addItem(i.portName())def pushButton_serial_clicked(self): if self.ui.pushButton_serial.text() == str("打开串口"): self.serial.setPortName(self.ui.comboBox_port.currentText()) self.serial.setBaudRate(QtSerialPort.QSerialPort.Baud115200) self.serial.setDataBits(QtSerialPort.QSerialPort.Data8) self.serial.setParity(QtSerialPort.QSerialPort.NoParity) self.serial.setStopBits(QtSerialPort.QSerialPort.OneStop) self.serial.setFlowControl(QtSerialPort.QSerialPort.NoFlowControl)self.ui.pushButton_serial.setText("关闭串口") if not self.serial.open(QtCore.QIODevice.ReadWrite): QtWidgets.QMessageBox.about(self,"提示","无法打开串口!") returnself.ui.comboBox_baud.setEnabled(False) self.ui.comboBox_data.setEnabled(False) self.ui.comboBox_port.setEnabled(False) self.ui.comboBox_stop.setEnabled(False) self.ui.comboBox_test.setEnabled(False)self.ui.pushButton_send.setEnabled(True) elif self.ui.pushButton_serial.text() == str("关闭串口"): self.serial.close() self.ui.pushButton_serial.setText("打开串口")self.ui.comboBox_baud.setEnabled(True) self.ui.comboBox_data.setEnabled(True) self.ui.comboBox_port.setEnabled(True) self.ui.comboBox_stop.setEnabled(True) self.ui.comboBox_test.setEnabled(True)self.ui.pushButton_send.setEnabled(False)if __name__ == "__main__": app = QtWidgets.QApplication(sys.argv) window = MainWindow() window.show()sys.exit(app.exec_())

.ui生成的代码这里强烈推荐使用Qt designer画出的.ui文件直接生成.py代码，不会的同学查看这里.

# -*- coding: utf-8 -*-# Form implementation generated from reading ui file 'ui_serialPort.ui' # # Created by: PyQt5 UI code generator 5.13.0 # # WARNING! All changes made in this file will be lost!from PyQt5 import QtCore, QtGui, QtWidgetsclass Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(410, 343) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.horizontalLayout_8 = QtWidgets.QHBoxLayout(self.centralwidget) self.horizontalLayout_8.setObjectName("horizontalLayout_8") self.horizontalLayout_7 = QtWidgets.QHBoxLayout() self.horizontalLayout_7.setObjectName("horizontalLayout_7") self.verticalLayout_3 = QtWidgets.QVBoxLayout() self.verticalLayout_3.setObjectName("verticalLayout_3") self.label_rece = QtWidgets.QLabel(self.centralwidget) self.label_rece.setObjectName("label_rece") self.verticalLayout_3.addWidget(self.label_rece) self.textEdit_rece = QtWidgets.QTextEdit(self.centralwidget) self.textEdit_rece.setObjectName("textEdit_rece") self.verticalLayout_3.addWidget(self.textEdit_rece) self.label_send = QtWidgets.QLabel(self.centralwidget) self.label_send.setObjectName("label_send") self.verticalLayout_3.addWidget(self.label_send) self.textEdit_send = QtWidgets.QTextEdit(self.centralwidget) self.textEdit_send.setObjectName("textEdit_send") self.verticalLayout_3.addWidget(self.textEdit_send) self.horizontalLayout_6 = QtWidgets.QHBoxLayout() self.horizontalLayout_6.setObjectName("horizontalLayout_6") self.pushButton_clear = QtWidgets.QPushButton(self.centralwidget) self.pushButton_clear.setObjectName("pushButton_clear") self.horizontalLayout_6.addWidget(self.pushButton_clear) self.pushButton_send = QtWidgets.QPushButton(self.centralwidget) self.pushButton_send.setObjectName("pushButton_send") self.horizontalLayout_6.addWidget(self.pushButton_send) self.verticalLayout_3.addLayout(self.horizontalLayout_6) self.horizontalLayout_7.addLayout(self.verticalLayout_3) self.verticalLayout_2 = QtWidgets.QVBoxLayout() self.verticalLayout_2.setObjectName("verticalLayout_2") self.verticalLayout = QtWidgets.QVBoxLayout() self.verticalLayout.setObjectName("verticalLayout") self.horizontalLayout = QtWidgets.QHBoxLayout() self.horizontalLayout.setObjectName("horizontalLayout") self.label_port = QtWidgets.QLabel(self.centralwidget) self.label_port.setObjectName("label_port") self.horizontalLayout.addWidget(self.label_port) self.comboBox_port = QtWidgets.QComboBox(self.centralwidget) self.comboBox_port.setObjectName("comboBox_port") self.horizontalLayout.addWidget(self.comboBox_port) self.verticalLayout.addLayout(self.horizontalLayout) self.horizontalLayout_2 = QtWidgets.QHBoxLayout() self.horizontalLayout_2.setObjectName("horizontalLayout_2") self.label_baud = QtWidgets.QLabel(self.centralwidget) self.label_baud.setObjectName("label_baud") self.horizontalLayout_2.addWidget(self.label_baud) self.comboBox_baud = QtWidgets.QComboBox(self.centralwidget) self.comboBox_baud.setObjectName("comboBox_baud") self.comboBox_baud.addItem("") self.comboBox_baud.addItem("") self.horizontalLayout_2.addWidget(self.comboBox_baud) self.verticalLayout.addLayout(self.horizontalLayout_2) self.horizontalLayout_3 = QtWidgets.QHBoxLayout() self.horizontalLayout_3.setObjectName("horizontalLayout_3") self.label_data = https://www.it610.com/article/QtWidgets.QLabel(self.centralwidget) self.label_data.setObjectName("label_data") self.horizontalLayout_3.addWidget(self.label_data) self.comboBox_data = https://www.it610.com/article/QtWidgets.QComboBox(self.centralwidget) self.comboBox_data.setObjectName("comboBox_data") self.comboBox_data.addItem("") self.horizontalLayout_3.addWidget(self.comboBox_data) self.verticalLayout.addLayout(self.horizontalLayout_3) self.horizontalLayout_4 = QtWidgets.QHBoxLayout() self.horizontalLayout_4.setObjectName("horizontalLayout_4") self.label_test = QtWidgets.QLabel(self.centralwidget) self.label_test.setObjectName("label_test") self.horizontalLayout_4.addWidget(self.label_test) self.comboBox_test = QtWidgets.QComboBox(self.centralwidget) self.comboBox_test.setObjectName("comboBox_test") self.comboBox_test.addItem("") self.horizontalLayout_4.addWidget(self.comboBox_test) self.verticalLayout.addLayout(self.horizontalLayout_4) self.horizontalLayout_5 = QtWidgets.QHBoxLayout() self.horizontalLayout_5.setObjectName("horizontalLayout_5") self.label_stop = QtWidgets.QLabel(self.centralwidget) self.label_stop.setObjectName("label_stop") self.horizontalLayout_5.addWidget(self.label_stop) self.comboBox_stop = QtWidgets.QComboBox(self.centralwidget) self.comboBox_stop.setObjectName("comboBox_stop") self.comboBox_stop.addItem("") self.horizontalLayout_5.addWidget(self.comboBox_stop) self.verticalLayout.addLayout(self.horizontalLayout_5) self.verticalLayout_2.addLayout(self.verticalLayout) self.pushButton_search = QtWidgets.QPushButton(self.centralwidget) self.pushButton_search.setObjectName("pushButton_search") self.verticalLayout_2.addWidget(self.pushButton_search) spacerItem = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) self.verticalLayout_2.addItem(spacerItem) self.pushButton_serial = QtWidgets.QPushButton(self.centralwidget) self.pushButton_serial.setObjectName("pushButton_serial") self.verticalLayout_2.addWidget(self.pushButton_serial) self.horizontalLayout_7.addLayout(self.verticalLayout_2) self.horizontalLayout_8.addLayout(self.horizontalLayout_7) MainWindow.setCentralWidget(self.centralwidget) self.statusbar = QtWidgets.QStatusBar(MainWindow) self.statusbar.setObjectName("statusbar") MainWindow.setStatusBar(self.statusbar)self.retranslateUi(MainWindow) QtCore.QMetaObject.connectSlotsByName(MainWindow)def retranslateUi(self, MainWindow): _translate = QtCore.QCoreApplication.translate MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow")) self.label_rece.setText(_translate("MainWindow", "接受窗口")) self.label_send.setText(_translate("MainWindow", "发送窗口")) self.pushButton_clear.setText(_translate("MainWindow", "清空接受")) self.pushButton_send.setText(_translate("MainWindow", "发送数据")) self.label_port.setText(_translate("MainWindow", "串口号:")) self.label_baud.setText(_translate("MainWindow", "波特率:")) self.comboBox_baud.setItemText(0, _translate("MainWindow", "9600")) self.comboBox_baud.setItemText(1, _translate("MainWindow", "115200")) self.label_data.setText(_translate("MainWindow", "数据位：")) self.comboBox_data.setItemText(0, _translate("MainWindow", "8")) self.label_test.setText(_translate("MainWindow", "校验位：")) self.comboBox_test.setItemText(0, _translate("MainWindow", "0")) self.label_stop.setText(_translate("MainWindow", "停止位：")) self.comboBox_stop.setItemText(0, _translate("MainWindow", "1")) self.pushButton_search.setText(_translate("MainWindow", "检测串口")) self.pushButton_serial.setText(_translate("MainWindow", "打开串口"))

参考 【Python|Python-Qt简单串口通讯】1.Using Qt Designer