pyqt5写的串口调试助手 示例代码

下面是一个简单的 PyQT5 串口调试助手示例代码：

import sys
import serial
from PyQt5.QtWidgets import QApplication, QMainWindow, QComboBox, QPushButton, QTextEdit, QLabel


class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        # 初始化串口
        self.serial_port = serial.Serial()

        # 设置窗口大小和标题
        self.setGeometry(100, 100, 400, 400)
        self.setWindowTitle('Serial Port Assistant')

        # 下拉框控件，用于选择串口号和波特率
        self.combo_box_port = QComboBox(self)
        self.combo_box_port.move(20, 20)
        self.combo_box_port.resize(150, 30)
        self.combo_box_port.addItems(['COM{}'.format(i + 1) for i in range(256)])

        self.combo_box_baud_rate = QComboBox(self)
        self.combo_box_baud_rate.move(200, 20)
        self.combo_box_baud_rate.resize(150, 30)
        self.combo_box_baud_rate.addItems(['9600', '115200', '230400', '460800'])

        # 打开和关闭串口按钮
        self.btn_open = QPushButton('Open', self)
        self.btn_open.move(20, 70)
        self.btn_open.clicked.connect(self.open_serial_port)

        self.btn_close = QPushButton('Close', self)
        self.btn_close.move(200, 70)
        self.btn_close.clicked.connect(self.close_serial_port)

        # 文本框控件，用于显示收发数据
        self.text_receive = QTextEdit(self)
        self.text_receive.move(20, 120)
        self.text_receive.resize(350, 200)

        self.text_send = QTextEdit(self)
        self.text_send.move(20, 340)
        self.text_send.resize(350, 40)

        # 发送按钮
        self.btn_send = QPushButton('Send', self)
        self.btn_send.move(280, 390)
        self.btn_send.clicked.connect(self.send_data)

        # 状态栏，用于显示串口状态
        self.status_bar = QLabel(self)
        self.status_bar.move(20, 390)
        self.status_bar.resize(200, 20)
        self.status_bar.setText('Serial Port Closed')

    def open_serial_port(self):
        # 获取串口号和波特率
        port = self.combo_box_port.currentText()
        baud_rate = int(self.combo_box_baud_rate.currentText())

        # 打开串口
        self.serial_port.port = port
        self.serial_port.baudrate = baud_rate
        self.serial_port.open()

        # 更新状态栏和按钮状态
        self.status_bar.setText('Serial Port Opened')
        self.btn_open.setEnabled(False)
        self.btn_close.setEnabled(True)

        # 监听串口数据
        self.serial_port.timeout = 0.1
        self.serial_port.bytesize = 8
        self.serial_port.parity = 'N'
        self.serial_port.stopbits = 1
        self.serial_port.xonxoff = False
        self.serial_port.rtscts = False
        self.serial_port.dsrdtr = False

        self.serial_port.flushInput()
        self.serial_port.flushOutput()

        while True:
            try:
                data = self.serial_port.readline().decode('utf-8')
            except:
                break

            if data:
                self.text_receive.append(data)

    def close_serial_port(self):
        # 关闭串口
        self.serial_port.close()

        # 更新状态栏和按钮状态
        self.status_bar.setText('Serial Port Closed')
        self.btn_open.setEnabled(True)
        self.btn_close.setEnabled(False)

    def send_data(self):
        # 发送数据
        data = self.text_send.toPlainText().encode('utf-8')
        self.serial_port.write(data)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = MainWindow()
    window.show()
    sys.exit(app.exec_())

这个示例程序实现了串口的打开和关闭，以及收发数据，并且使用了 PyQT5 的一些常用控件，如下拉框、文本框、按钮和状态栏等。你可以根据自己的需求进行修改和扩展。