# 逻辑文件import reimport sysimport binasciiimport timefrom PyQt5.QtCore import QTimer, QUrlfrom PyQt5.QtWidgets import *from PyQt5.QtSerialPort import QSerialPort, QSerialPortInfofrom PyQt5.QtWidgets import QApplication, QMainWindowfrom PyQt5.QtWebEngineWidgets import *from Ui_SerialPort import Ui_Formfrom PyQt5.QtCore import QDateclass MyMainWindow(QMainWindow, Ui_Form): def __init__(self, parent=None): super(MyMainWindow, self).__init__(parent) self.setupUi(self) # 设置实例 self.CreateItems() # 设置信号与槽 self.CreateSignalSlot() # 设置实例 def CreateItems(self): # Qt 串口类 self.com = QSerialPort() # Qt 定时器类 self.timer = QTimer(self) #初始化一个定时器 self.timer.timeout.connect(self.ShowTime) #计时结束调用operate()方法 self.timer.start(100) #设置计时间隔 100ms 并启动 # 设置信号与槽 def CreateSignalSlot(self): self.Com_Open_Button.clicked.connect(self.Com_Open_Button_clicked) self.Com_Close_Button.clicked.connect(self.Com_Close_Button_clicked) self.Send_Button.clicked.connect(self.SendButton_clicked) self.Com_Refresh_Button.clicked.connect(self.Com_Refresh_Button_Clicked) self.com.readyRead.connect(self.Com_Receive_Data) # 接收数据 self.hexSending_checkBox.stateChanged.connect(self.hexShowingClicked) self.hexSending_checkBox.stateChanged.connect(self.hexSendingClicked) self.About_Button.clicked.connect(self.Goto_GitHub) # 跳转到 GitHub 查看源代码 def Goto_GitHub(self): self.browser = QWebEngineView() self.browser.load(QUrl('https://github.com/Oslomayor/PyQt5-SerialPort-Stable')) self.setCentralWidget(self.browser) # 显示时间 def ShowTime(self): self.Time_Label.setText(time.strftime("%B %d, %H:%M:%S", time.localtime())) # 串口发送数据 def Com_Send_Data(self): txData = self.textEdit_Send.toPlainText() if len(txData) == 0 : return if self.hexSending_checkBox.isChecked() == False: self.com.write(txData.encode('UTF-8')) else: Data = txData.replace(' ', '') # 如果16进制不是偶数个字符, 去掉最后一个, [ ]左闭右开 if len(Data)%2 == 1: Data = Data[0:len(Data)-1] # 如果遇到非16进制字符 if Data.isalnum() is False: QMessageBox.critical(self, '错误', '包含非十六进制数') try: hexData = binascii.a2b_hex(Data) except: QMessageBox.critical(self, '错误', '转换编码错误') return # 发送16进制数据, 发送格式如 ‘31 32 33 41 42 43’, 代表'123ABC' try: self.com.write(hexData) except: QMessageBox.critical(self, '异常', '十六进制发送错误') return # 串口接收数据 def Com_Receive_Data(self): try: rxData = bytes(self.com.readAll()) except: QMessageBox.critical(self, '严重错误', '串口接收数据错误') if self.hexShowing_checkBox.isChecked() == False : try: self.textEdit_Recive.insertPlainText(rxData.decode('UTF-8')) except: pass else : Data = binascii.b2a_hex(rxData).decode('ascii') # re 正则表达式 (.{2}) 匹配两个字母 hexStr = ' 0x'.join(re.findall('(.{2})', Data)) # 补齐第一个 0x hexStr = '0x' hexStr self.textEdit_Recive.insertPlainText(hexStr) self.textEdit_Recive.insertPlainText(' ') # 串口刷新 def Com_Refresh_Button_Clicked(self): self.Com_Name_Combo.clear() com = QSerialPort() com_list = QSerialPortInfo.availablePorts() for info in com_list: com.setPort(info) if com.open(QSerialPort.ReadWrite): self.Com_Name_Combo.addItem(info.portName()) com.close() # 16进制显示按下 def hexShowingClicked(self): if self.hexShowing_checkBox.isChecked() == True: # 接收区换行 self.textEdit_Recive.insertPlainText('\n') # 16进制发送按下 def hexSendingClicked(self): if self.hexSending_checkBox.isChecked() == True: pass # 发送按钮按下 def SendButton_clicked(self): self.Com_Send_Data() # 串口刷新按钮按下 def Com_Open_Button_clicked(self): #### com Open Code here #### comName = self.Com_Name_Combo.currentText() comBaud = int(self.Com_Baud_Combo.currentText()) self.com.setPortName(comName) try: if self.com.open(QSerialPort.ReadWrite) == False: QMessageBox.critical(self, '严重错误', '串口打开失败') return except: QMessageBox.critical(self, '严重错误', '串口打开失败') return self.Com_Close_Button.setEnabled(True) self.Com_Open_Button.setEnabled(False) self.Com_Refresh_Button.setEnabled(False) self.Com_Name_Combo.setEnabled(False) self.Com_Baud_Combo.setEnabled(False) self.Com_isOpenOrNot_Label.setText(' 已打开') self.com.setBaudRate(comBaud) def Com_Close_Button_clicked(self): self.com.close() self.Com_Close_Button.setEnabled(False) self.Com_Open_Button.setEnabled(True) self.Com_Refresh_Button.setEnabled(True) self.Com_Name_Combo.setEnabled(True) self.Com_Baud_Combo.setEnabled(True) self.Com_isOpenOrNot_Label.setText(' 已关闭') if __name__ == '__main__': app = QApplication(sys.argv) myWin = MyMainWindow() myWin.show() sys.exit(app.exec_())
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