制作一个串口助手 | python + pyqt5

以下是一个使用Python和PyQt5制作的简易串口助手的代码示例：

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QVBoxLayout, QWidget, QLabel, QPushButton, QMessageBox
from PyQt5.QtSerialPort import QSerialPort, QSerialPortInfo
 
class SerialPortTerminal(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowTitle('串口助手')
        self.port = QSerialPort()
        self.initUI()
 
    def initUI(self):
        # 列出所有可用串口并显示
        port_info_list = QSerialPortInfo().availablePorts()
        self.port_list = [x.portName() for x in port_info_list]
        self.port_label = QLabel('串口列表:')
        self.port_label.setMinimumWidth(150)
        self.port_combo = QComboBox()
        self.port_combo.addItems(self.port_list)
 
        # 打开和关闭串口按钮
        self.open_btn = QPushButton('打开串口')
        self.open_btn.clicked.connect(self.open_port)
        self.close_btn = QPushButton('关闭串口')
        self.close_btn.clicked.connect(self.close_port)
        self.close_btn.setEnabled(False)
 
        # 布局
        layout = QVBoxLayout()
        layout.addWidget(self.port_label)
        layout.addWidget(self.port_combo)
        layout.addWidget(self.open_btn)
        layout.addWidget(self.close_btn)
 
        central_widget = QWidget()
        central_widget.setLayout(layout)
        self.setCentralWidget(central_widget)
 
    def open_port(self):
        port_name = self.port_combo.currentText()
        self.port.setPortName(port_name)
        if not self.port.open(QIODevice.ReadWrite):
            QMessageBox.critical(self, '错误', '无法打开串口')
            return
        self.open_btn.setEnabled(False)
        self.close_btn.setEnabled(True)
 
    def close_port(self):
        self.port.close()
        self.open_btn.setEnabled(True)
        self.close_btn.setEnabled(False)
 
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = SerialPortTerminal()
    ex.