PyQt5+serial模塊實現(xiàn)一個串口小工具
串口簡述
異步串行是指UART(Universal Asynchronous Receiver/Transmitter),通用異步接收/發(fā)送。UART是一個并行輸入成為串行輸出的芯片,通常集成在主板上。UART包含TTL電平的串口和RS232電平的串口。 TTL電平是3.3V的,而RS232是負(fù)邏輯電平,它定義+5+12V為低電平,而-12-5V為高電平,MDS2710、MDS SD4、EL805等是RS232接口,EL806有TTL接口。
串行接口按電氣標(biāo)準(zhǔn)及協(xié)議來分包括RS-232-C、RS-422、RS485等。RS-232-C、RS-422與RS-485標(biāo)準(zhǔn)只對接口的電氣特性做出規(guī)定,不涉及接插件、電纜或協(xié)議。
1.RS-232
也稱標(biāo)準(zhǔn)串口,最常用的一種串行通訊接口。它是在1970年由美國電子工業(yè)協(xié)會(EIA)聯(lián)合貝爾系統(tǒng)、調(diào)制解調(diào)器廠家及計算機終端生產(chǎn)廠家共同制定的用于串行通訊的標(biāo)準(zhǔn)。它的全名是“ [1] 數(shù)據(jù)終端設(shè)備(DTE)和數(shù)據(jù)通訊設(shè)備(DCE)之間串行二進制數(shù)據(jù)交換接口的技術(shù)標(biāo)準(zhǔn)”。傳統(tǒng)的RS-232-C接口標(biāo)準(zhǔn)有22根線,采用標(biāo)準(zhǔn)25芯D型插頭座(DB25),后來使用簡化為9芯D型插座(DB9),現(xiàn)在應(yīng)用中25芯插頭座已很少采用。
RS-232采取不平衡傳輸方式,即所謂單端通訊。由于其發(fā)送電平與接收電平的差僅為2V至3V左右,所以其共模抑制能力差,再加上雙絞線上的分布電容,其傳送距離最大為約15米,最高速率為20kb/s。RS-232是為點對點(即只用一對收、發(fā)設(shè)備)通訊而設(shè)計的,其驅(qū)動器負(fù)載為3~7kΩ。所以RS-232適合本地設(shè)備之間的通信。 [2]
2.RS-422
標(biāo)準(zhǔn)全稱是“平衡電壓數(shù)字接口電路的電氣特性”,它定義了接口電路的特性。典型的RS-422是四線接口。實際上還有一根信號地線,共5根線。其DB9連接器引腳定義。由于接收器采用高輸入阻抗和發(fā)送驅(qū)動器比RS232更強的驅(qū)動能力,故允許在相同傳輸線上連接多個接收節(jié)點,最多可接10個節(jié)點。即一個主設(shè)備(Master),其余為從設(shè)備(Slave),從設(shè)備之間不能通信,所以RS-422支持點對多的雙向通信。接收器輸入阻抗為4k,故發(fā)端最大負(fù)載能力是10×4k+100Ω(終接電阻)。RS-422四線接口由于采用單獨的發(fā)送和接收通道,因此不必控制數(shù)據(jù)方向,各裝置之間任何必須的信號交換均可以按軟件方式(XON/XOFF握手)或硬件方式(一對單獨的雙絞線)實現(xiàn)。
RS-422的最大傳輸距離為1219米,最大傳輸速率為10Mb/s。其平衡雙絞線的長度與傳輸速率成反比,在100kb/s速率以下,才可能達(dá)到最大傳輸距離。只有在很短的距離下才能獲得最高速率傳輸。一般100米長的雙絞線上所能獲得的最大傳輸速率僅為1Mb/s。
3.RS-485
是從RS-422基礎(chǔ)上發(fā)展而來的,所以RS-485許多電氣規(guī)定與RS-422相仿。如都采用平衡傳輸方式、都需要在傳輸線上接終接電阻等。RS-485可以采用二線與四線方式,二線制可實現(xiàn)真正的多點雙向通信,而采用四線連接時,與RS-422一樣只能實現(xiàn)點對多的通信,即只能有一個主(Master)設(shè)備,其余為從設(shè)備,但它比RS-422有改進,無論四線還是二線連接方式總線上可多接到32個設(shè)備。
RS-485與RS-422的不同還在于其共模輸出電壓是不同的,RS-485是-7V至+12V之間,而RS-422在-7V至+7V之間,RS-485接收器最小輸入阻抗為12kΩ、RS-422是4kΩ;由于RS-485滿足所有RS-422的規(guī)范,所以RS-485的驅(qū)動器可以在RS-422網(wǎng)絡(luò)中應(yīng)用。
RS-485與RS-422一樣,其最大傳輸距離約為1219米,最大傳輸速率為10Mb/s。平衡雙絞線的長度與傳輸速率成反比,在100kb/s速率以下,才可能使用規(guī)定最長的電纜長度。只有在很短的距離下才能獲得最高速率傳輸。一般100米長雙絞線最大傳輸速率僅為1Mb/s。
注:以上內(nèi)容摘自百度百科。
引腳定義:
- RX(Receive Data):接收數(shù)據(jù)
- TX(Transmit Data):發(fā)送數(shù)據(jù)
- CTS(Clear To Send): 清除發(fā)送
- RTS(Request To Send):請求發(fā)送
- DTR(Data Terminal Ready):數(shù)據(jù)終端準(zhǔn)備好
- DSR(Data Set Ready):數(shù)據(jù)準(zhǔn)備好
如果UART只有RX、TX兩個信號,要流控的話只能是軟流控;
如果有RX,TX,CTS,RTS 四個信號,則多半是支持硬流控的UART;
如果有 RX,TX,CTS ,RTS ,DTR,DSR 六個信號的話,RS232標(biāo)準(zhǔn)的可能性比較大。
serial模塊
參數(shù)
方法
使用模板
1.初始化端口無指定參數(shù)
mSerial = serial.Serial() mSerial.port = ‘COM9' mSerial.baudrate = 115200 '''其它端口參數(shù)''' m.Serial.open() # 打開端口 mSerial.isOpen() mSerial.read() mSerial.write(b'hello world')
2.初始化端口指定端口號和波特率
mSerial = serial.Serial(‘COM9', 115200) mSerial.isOpen() mSerial.read() mSerial.write(b'hello world')
3.初始化端口指定所有參數(shù)
mSerial = serial.Serial(port=‘COM9', baudrate=115200, bytesize=8, parity=‘N', stopbits=1, timeout=100, xonxoff=False, rtscts=False, dsrdtr=False) mSerial.isOpen() mSerial.read() mSerial.write(b'hello world')
串口工具示例
主程序代碼
import sys import serial import serial.tools.list_ports from PyQt5.QtGui import * from PyQt5.QtCore import * from PyQt5.QtWidgets import * from ui_comport import Ui_MainWindow class ComPortWindow(QMainWindow, Ui_MainWindow): def __init__(self, parent=None) -> None: super(ComPortWindow, self).__init__(parent) self.setupUi(self) self.setWindowTitle('串口小工具') self.setWindowIcon(QIcon('./images/iconCOM9.png')) self.mSerial = serial.Serial() self.ScanComPort() # 掃描一次串口端口 self.OnPortChanged() self.comboBox_Baudrate.setCurrentText("115200") # 設(shè)置默認(rèn)波特率 self.comboBox_ByteSize.setCurrentText("8") # 設(shè)置默認(rèn)數(shù)據(jù)位 self.BtnScanPort.clicked.connect(self.ScanComPort) self.BtnOpenPort.clicked.connect(self.OpenComPort) self.BtnClosePort.clicked.connect(self.CloseComPort) self.BtnSendData.clicked.connect(self.SendData) self.BtnClearRecv.clicked.connect(self.ClearRecvText) self.BtnClearSend.clicked.connect(self.ClearSendText) self.comboBox_ComPort.currentIndexChanged.connect(self.OnPortChanged) # 串口接收數(shù)據(jù)定時器 self.recvTimer = QTimer(self) self.recvTimer.timeout.connect(self.RecvData) def ClearRecvText(self): self.textBrowserRecvArea.clear() def ClearSendText(self): self.lineEdit_SendData.clear() def OnPortChanged(self): if len(self.portDict) > 0: self.label_CurrentPortName.setText(self.portDict[self.comboBox_ComPort.currentText()]) def ScanComPort(self): self.portDict = {} self.comboBox_ComPort.clear() portList = list(serial.tools.list_ports.comports()) for port in portList: self.portDict["%s" % port[0]] = "%s" % port[1] self.comboBox_ComPort.addItem(port[0]) if len(self.portDict) == 0: QMessageBox.critical(self, "警告", "未找到串口", QMessageBox.Cancel, QMessageBox.Cancel) pass def OpenComPort(self): # 設(shè)置端口號 self.mSerial.port = self.comboBox_ComPort.currentText() # 設(shè)置波特率 self.mSerial.baudrate = int(self.comboBox_Baudrate.currentText()) # 數(shù)據(jù)位設(shè)置 bytesize = self.comboBox_ByteSize.currentText() if "5" == bytesize: self.mSerial.bytesize = serial.FIVEBITS elif "6" == bytesize: self.mSerial.bytesize = serial.SIXBITS elif "7" == bytesize: self.mSerial.bytesize = serial.SEVENBITS elif "8" == bytesize: self.mSerial.bytesize = serial.EIGHTBITS # 停止位設(shè)置 stopbitsItems = [serial.STOPBITS_ONE, serial.STOPBITS_ONE_POINT_FIVE, serial.STOPBITS_TWO] self.mSerial.stopbits = stopbitsItems[self.comboBox_Stopbits.currentIndex()] # 校驗位設(shè)置 parityItmes = [serial.PARITY_NONE, serial.PARITY_ODD, serial.PARITY_EVEN, serial.PARITY_MARK, serial.PARITY_SPACE, serial.PARITY_NAMES] self.mSerial.parity = parityItmes[self.comboBox_Parity.currentIndex()] stopbitsItems = [serial.STOPBITS_ONE, serial.STOPBITS_ONE_POINT_FIVE, serial.STOPBITS_TWO] self.mSerial.stopbits = stopbitsItems[self.comboBox_Stopbits.currentIndex()] # 停止為[] flowctrl = self.comboBox_FlowCtrl.currentText() if 'None' == flowctrl: self.mSerial.xonxoff = False # 軟件流控 self.mSerial.rtscts = False # 硬件流控 self.mSerial.dsrdtr = False # 硬件流控 elif 'XON/XOFF' == flowctrl: self.mSerial.xonxoff = True # 軟件流控 self.mSerial.rtscts = False # 硬件流控 self.mSerial.dsrdtr = False # 硬件流控 elif 'RTS/CTS' == flowctrl: self.mSerial.xonxoff = False # 軟件流控 self.mSerial.rtscts = True # 硬件流控 self.mSerial.dsrdtr = False # 硬件流控 # 超時時間 self.mSerial.timeout = 100 if self.mSerial.isOpen(): QMessageBox.warning(self, "警告", "串口已打開", QMessageBox.Cancel, QMessageBox.Cancel) else: try: self.BtnOpenPort.setEnabled(False) self.mSerial.open() self.mSerial.flushInput() self.mSerial.flushOutput() self.recvTimer.start(20) except: QMessageBox.critical(self, "警告", "串口打開失敗", QMessageBox.Cancel, QMessageBox.Cancel) self.BtnOpenPort.setEnabled(True) # 打印端口信息 print(self.mSerial) def CloseComPort(self): self.recvTimer.stop() if self.mSerial.isOpen(): self.BtnOpenPort.setEnabled(True) self.mSerial.flushInput() self.mSerial.flushOutput() self.mSerial.close() pass def SendData(self): if self.mSerial.isOpen(): sendtext = self.lineEdit_SendData.text() sendtext = sendtext + '\r\n' self.mSerial.write(sendtext.encode("utf-8")) print("send data:", sendtext) else: QMessageBox.warning(self, "警告", "串口未打開,請先打開串口", QMessageBox.Cancel, QMessageBox.Cancel) def RecvData(self): dataheader = b'$$:' # 數(shù)據(jù)幀頭, 原始數(shù)據(jù)幀格式 '$$:10,11,12' try: num = self.mSerial.inWaiting() except: self.CloseComPort() if num > 0: try: self.data = self.mSerial.readline(1024) # 讀取一行數(shù)據(jù) 添加到數(shù)據(jù)接收顯示區(qū) if self.data.endswith("\n".encode("utf-8")): self.textBrowserRecvArea.append(self.data.decode("utf-8")) # 解析數(shù)據(jù)項,數(shù)據(jù)幀以 b'$$:' 開頭,多個數(shù)據(jù)參數(shù)之間以 ‘,' 分割, 數(shù)據(jù)幀以'\r\n'結(jié)束 if self.data.decode('UTF-8').startswith(dataheader.decode('UTF-8')): rawdata = self.data[len(dataheader) : len(self.data)-2] data = rawdata.split(b',') print(int(data[0]), int(data[1]), int(data[2])) except: pass if __name__ == "__main__": app = QApplication(sys.argv) win = ComPortWindow() win.show() sys.exit(app.exec_())
QtDesigner UI界面設(shè)計:
QtDesigner UI文件 comport.ui
<?xml version="1.0" encoding="UTF-8"?> <ui version="4.0"> <class>MainWindow</class> <widget class="QMainWindow" name="MainWindow"> <property name="geometry"> <rect> <x>0</x> <y>0</y> <width>1135</width> <height>713</height> </rect> </property> <property name="windowTitle"> <string>MainWindow</string> </property> <widget class="QWidget" name="centralwidget"> <widget class="QGroupBox" name="groupBox_ComSettings"> <property name="geometry"> <rect> <x>10</x> <y>20</y> <width>221</width> <height>471</height> </rect> </property> <property name="title"> <string>串口設(shè)置</string> </property> <widget class="QWidget" name="horizontalLayoutWidget"> <property name="geometry"> <rect> <x>10</x> <y>400</y> <width>201</width> <height>51</height> </rect> </property> <layout class="QHBoxLayout" name="horizontalLayout"> <item> <widget class="QPushButton" name="BtnOpenPort"> <property name="text"> <string>打開串口</string> </property> </widget> </item> <item> <widget class="QPushButton" name="BtnClosePort"> <property name="text"> <string>關(guān)閉串口</string> </property> </widget> </item> </layout> </widget> <widget class="QWidget" name="horizontalLayoutWidget_2"> <property name="geometry"> <rect> <x>10</x> <y>350</y> <width>201</width> <height>51</height> </rect> </property> <layout class="QHBoxLayout" name="horizontalLayout_8"> <item> <widget class="QPushButton" name="BtnScanPort"> <property name="text"> <string>掃描端口</string> </property> </widget> </item> </layout> </widget> <widget class="QLabel" name="label_CurrentPortName"> <property name="geometry"> <rect> <x>10</x> <y>20</y> <width>201</width> <height>31</height> </rect> </property> <property name="text"> <string/> </property> </widget> <widget class="QWidget" name="layoutWidget"> <property name="geometry"> <rect> <x>10</x> <y>60</y> <width>201</width> <height>281</height> </rect> </property> <layout class="QVBoxLayout" name="verticalLayout"> <item> <layout class="QHBoxLayout" name="horizontalLayout_2"> <item> <widget class="QLabel" name="label_ComPort"> <property name="maximumSize"> <size> <width>60</width> <height>16777215</height> </size> </property> <property name="text"> <string>串 口</string> </property> </widget> </item> <item> <widget class="QComboBox" name="comboBox_ComPort"> <property name="editable"> <bool>false</bool> </property> </widget> </item> </layout> </item> <item> <layout class="QHBoxLayout" name="horizontalLayout_3"> <item> <widget class="QLabel" name="label_Baudrate"> <property name="maximumSize"> <size> <width>60</width> <height>16777215</height> </size> </property> <property name="text"> <string>波特率</string> </property> </widget> </item> <item> <widget class="QComboBox" name="comboBox_Baudrate"> <property name="editable"> <bool>true</bool> </property> <property name="currentText"> <string>115200</string> </property> <property name="currentIndex"> <number>8</number> </property> <item> <property name="text"> <string>2400</string> </property> </item> <item> <property name="text"> <string>4800</string> </property> </item> <item> <property name="text"> <string>9600</string> </property> </item> <item> <property name="text"> <string>14400</string> </property> </item> <item> <property name="text"> <string>19200</string> </property> </item> <item> <property name="text"> <string>38400</string> </property> </item> <item> <property name="text"> <string>56000</string> </property> </item> <item> <property name="text"> <string>57600</string> </property> </item> <item> <property name="text"> <string>115200</string> </property> </item> <item> <property name="text"> <string>128000</string> </property> </item> <item> <property name="text"> <string>256000</string> </property> </item> <item> <property name="text"> <string>230400</string> </property> </item> <item> <property name="text"> <string>1000000</string> </property> </item> <item> <property name="text"> <string>2000000</string> </property> </item> <item> <property name="text"> <string>3000000</string> </property> </item> </widget> </item> </layout> </item> <item> <layout class="QHBoxLayout" name="horizontalLayout_4"> <item> <widget class="QLabel" name="label_ByteSize"> <property name="maximumSize"> <size> <width>60</width> <height>16777215</height> </size> </property> <property name="text"> <string>數(shù)據(jù)位</string> </property> </widget> </item> <item> <widget class="QComboBox" name="comboBox_ByteSize"> <property name="editable"> <bool>false</bool> </property> <property name="currentText"> <string>8</string> </property> <property name="currentIndex"> <number>3</number> </property> <item> <property name="text"> <string>5</string> </property> </item> <item> <property name="text"> <string>6</string> </property> </item> <item> <property name="text"> <string>7</string> </property> </item> <item> <property name="text"> <string>8</string> </property> </item> </widget> </item> </layout> </item> <item> <layout class="QHBoxLayout" name="horizontalLayout_6"> <item> <widget class="QLabel" name="label_Stopbits"> <property name="maximumSize"> <size> <width>60</width> <height>16777215</height> </size> </property> <property name="text"> <string>停止位</string> </property> </widget> </item> <item> <widget class="QComboBox" name="comboBox_Stopbits"> <item> <property name="text"> <string>1</string> </property> </item> <item> <property name="text"> <string>1.5</string> </property> </item> <item> <property name="text"> <string>2</string> </property> </item> </widget> </item> </layout> </item> <item> <layout class="QHBoxLayout" name="horizontalLayout_5"> <item> <widget class="QLabel" name="label_Parity"> <property name="maximumSize"> <size> <width>60</width> <height>16777215</height> </size> </property> <property name="text"> <string>校驗位</string> </property> </widget> </item> <item> <widget class="QComboBox" name="comboBox_Parity"> <item> <property name="text"> <string>None</string> </property> </item> <item> <property name="text"> <string>Odd</string> </property> </item> <item> <property name="text"> <string>Even</string> </property> </item> <item> <property name="text"> <string>Mark</string> </property> </item> <item> <property name="text"> <string>Space</string> </property> </item> </widget> </item> </layout> </item> <item> <layout class="QHBoxLayout" name="horizontalLayout_7"> <item> <widget class="QLabel" name="label_CTS"> <property name="maximumSize"> <size> <width>60</width> <height>16777215</height> </size> </property> <property name="text"> <string>流 控</string> </property> </widget> </item> <item> <widget class="QComboBox" name="comboBox_FlowCtrl"> <item> <property name="text"> <string>None</string> </property> </item> <item> <property name="text"> <string>RTS/CTS</string> </property> </item> <item> <property name="text"> <string>XON/XOFF</string> </property> </item> </widget> </item> </layout> </item> </layout> </widget> </widget> <widget class="QGroupBox" name="groupBox"> <property name="geometry"> <rect> <x>250</x> <y>20</y> <width>871</width> <height>471</height> </rect> </property> <property name="title"> <string>接收區(qū)</string> </property> <widget class="QTextBrowser" name="textBrowserRecvArea"> <property name="geometry"> <rect> <x>10</x> <y>20</y> <width>851</width> <height>441</height> </rect> </property> </widget> </widget> <widget class="QGroupBox" name="groupBox_2"> <property name="geometry"> <rect> <x>250</x> <y>500</y> <width>871</width> <height>161</height> </rect> </property> <property name="title"> <string>發(fā)送區(qū)</string> </property> <widget class="QLineEdit" name="lineEdit_SendData"> <property name="geometry"> <rect> <x>10</x> <y>20</y> <width>851</width> <height>51</height> </rect> </property> </widget> <widget class="QPushButton" name="BtnSendData"> <property name="geometry"> <rect> <x>10</x> <y>80</y> <width>71</width> <height>71</height> </rect> </property> <property name="text"> <string>發(fā)送數(shù)據(jù)</string> </property> </widget> </widget> <widget class="QGroupBox" name="groupBox_3"> <property name="geometry"> <rect> <x>10</x> <y>500</y> <width>221</width> <height>161</height> </rect> </property> <property name="title"> <string>收/發(fā)控制</string> </property> <widget class="QPushButton" name="BtnClearRecv"> <property name="geometry"> <rect> <x>10</x> <y>20</y> <width>201</width> <height>61</height> </rect> </property> <property name="text"> <string>清空接收區(qū)</string> </property> </widget> <widget class="QPushButton" name="BtnClearSend"> <property name="geometry"> <rect> <x>10</x> <y>90</y> <width>201</width> <height>61</height> </rect> </property> <property name="text"> <string>清空發(fā)送區(qū)</string> </property> </widget> </widget> </widget> <widget class="QMenuBar" name="menubar"> <property name="geometry"> <rect> <x>0</x> <y>0</y> <width>1135</width> <height>26</height> </rect> </property> </widget> <widget class="QStatusBar" name="statusbar"/> </widget> <resources/> <connections/> </ui>
comport.ui文件編譯生成的ui_comport.py
# -*- coding: utf-8 -*- # Form implementation generated from reading ui file 'd:\project\python\串口工具\串口收發(fā)工具\comport.ui' # # Created by: PyQt5 UI code generator 5.15.7 # # WARNING: Any manual changes made to this file will be lost when pyuic5 is # run again. Do not edit this file unless you know what you are doing. from PyQt5 import QtCore, QtGui, QtWidgets class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(1135, 713) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") self.groupBox_ComSettings = QtWidgets.QGroupBox(self.centralwidget) self.groupBox_ComSettings.setGeometry(QtCore.QRect(10, 20, 221, 471)) self.groupBox_ComSettings.setObjectName("groupBox_ComSettings") self.horizontalLayoutWidget = QtWidgets.QWidget(self.groupBox_ComSettings) self.horizontalLayoutWidget.setGeometry(QtCore.QRect(10, 400, 201, 51)) self.horizontalLayoutWidget.setObjectName("horizontalLayoutWidget") self.horizontalLayout = QtWidgets.QHBoxLayout(self.horizontalLayoutWidget) self.horizontalLayout.setContentsMargins(0, 0, 0, 0) self.horizontalLayout.setObjectName("horizontalLayout") self.BtnOpenPort = QtWidgets.QPushButton(self.horizontalLayoutWidget) self.BtnOpenPort.setObjectName("BtnOpenPort") self.horizontalLayout.addWidget(self.BtnOpenPort) self.BtnClosePort = QtWidgets.QPushButton(self.horizontalLayoutWidget) self.BtnClosePort.setObjectName("BtnClosePort") self.horizontalLayout.addWidget(self.BtnClosePort) self.horizontalLayoutWidget_2 = QtWidgets.QWidget(self.groupBox_ComSettings) self.horizontalLayoutWidget_2.setGeometry(QtCore.QRect(10, 350, 201, 51)) self.horizontalLayoutWidget_2.setObjectName("horizontalLayoutWidget_2") self.horizontalLayout_8 = QtWidgets.QHBoxLayout(self.horizontalLayoutWidget_2) self.horizontalLayout_8.setContentsMargins(0, 0, 0, 0) self.horizontalLayout_8.setObjectName("horizontalLayout_8") self.BtnScanPort = QtWidgets.QPushButton(self.horizontalLayoutWidget_2) self.BtnScanPort.setObjectName("BtnScanPort") self.horizontalLayout_8.addWidget(self.BtnScanPort) self.label_CurrentPortName = QtWidgets.QLabel(self.groupBox_ComSettings) self.label_CurrentPortName.setGeometry(QtCore.QRect(10, 20, 201, 31)) self.label_CurrentPortName.setText("") self.label_CurrentPortName.setObjectName("label_CurrentPortName") self.layoutWidget = QtWidgets.QWidget(self.groupBox_ComSettings) self.layoutWidget.setGeometry(QtCore.QRect(10, 60, 201, 281)) self.layoutWidget.setObjectName("layoutWidget") self.verticalLayout = QtWidgets.QVBoxLayout(self.layoutWidget) self.verticalLayout.setContentsMargins(0, 0, 0, 0) self.verticalLayout.setObjectName("verticalLayout") self.horizontalLayout_2 = QtWidgets.QHBoxLayout() self.horizontalLayout_2.setObjectName("horizontalLayout_2") self.label_ComPort = QtWidgets.QLabel(self.layoutWidget) self.label_ComPort.setMaximumSize(QtCore.QSize(60, 16777215)) self.label_ComPort.setObjectName("label_ComPort") self.horizontalLayout_2.addWidget(self.label_ComPort) self.comboBox_ComPort = QtWidgets.QComboBox(self.layoutWidget) self.comboBox_ComPort.setEditable(False) self.comboBox_ComPort.setObjectName("comboBox_ComPort") self.horizontalLayout_2.addWidget(self.comboBox_ComPort) self.verticalLayout.addLayout(self.horizontalLayout_2) self.horizontalLayout_3 = QtWidgets.QHBoxLayout() self.horizontalLayout_3.setObjectName("horizontalLayout_3") self.label_Baudrate = QtWidgets.QLabel(self.layoutWidget) self.label_Baudrate.setMaximumSize(QtCore.QSize(60, 16777215)) self.label_Baudrate.setObjectName("label_Baudrate") self.horizontalLayout_3.addWidget(self.label_Baudrate) self.comboBox_Baudrate = QtWidgets.QComboBox(self.layoutWidget) self.comboBox_Baudrate.setEditable(True) self.comboBox_Baudrate.setObjectName("comboBox_Baudrate") self.comboBox_Baudrate.addItem("") self.comboBox_Baudrate.addItem("") self.comboBox_Baudrate.addItem("") self.comboBox_Baudrate.addItem("") self.comboBox_Baudrate.addItem("") self.comboBox_Baudrate.addItem("") self.comboBox_Baudrate.addItem("") self.comboBox_Baudrate.addItem("") self.comboBox_Baudrate.addItem("") self.comboBox_Baudrate.addItem("") self.comboBox_Baudrate.addItem("") self.comboBox_Baudrate.addItem("") self.comboBox_Baudrate.addItem("") self.comboBox_Baudrate.addItem("") self.comboBox_Baudrate.addItem("") self.horizontalLayout_3.addWidget(self.comboBox_Baudrate) self.verticalLayout.addLayout(self.horizontalLayout_3) self.horizontalLayout_4 = QtWidgets.QHBoxLayout() self.horizontalLayout_4.setObjectName("horizontalLayout_4") self.label_ByteSize = QtWidgets.QLabel(self.layoutWidget) self.label_ByteSize.setMaximumSize(QtCore.QSize(60, 16777215)) self.label_ByteSize.setObjectName("label_ByteSize") self.horizontalLayout_4.addWidget(self.label_ByteSize) self.comboBox_ByteSize = QtWidgets.QComboBox(self.layoutWidget) self.comboBox_ByteSize.setEditable(False) self.comboBox_ByteSize.setObjectName("comboBox_ByteSize") self.comboBox_ByteSize.addItem("") self.comboBox_ByteSize.addItem("") self.comboBox_ByteSize.addItem("") self.comboBox_ByteSize.addItem("") self.horizontalLayout_4.addWidget(self.comboBox_ByteSize) self.verticalLayout.addLayout(self.horizontalLayout_4) self.horizontalLayout_6 = QtWidgets.QHBoxLayout() self.horizontalLayout_6.setObjectName("horizontalLayout_6") self.label_Stopbits = QtWidgets.QLabel(self.layoutWidget) self.label_Stopbits.setMaximumSize(QtCore.QSize(60, 16777215)) self.label_Stopbits.setObjectName("label_Stopbits") self.horizontalLayout_6.addWidget(self.label_Stopbits) self.comboBox_Stopbits = QtWidgets.QComboBox(self.layoutWidget) self.comboBox_Stopbits.setObjectName("comboBox_Stopbits") self.comboBox_Stopbits.addItem("") self.comboBox_Stopbits.addItem("") self.comboBox_Stopbits.addItem("") self.horizontalLayout_6.addWidget(self.comboBox_Stopbits) self.verticalLayout.addLayout(self.horizontalLayout_6) self.horizontalLayout_5 = QtWidgets.QHBoxLayout() self.horizontalLayout_5.setObjectName("horizontalLayout_5") self.label_Parity = QtWidgets.QLabel(self.layoutWidget) self.label_Parity.setMaximumSize(QtCore.QSize(60, 16777215)) self.label_Parity.setObjectName("label_Parity") self.horizontalLayout_5.addWidget(self.label_Parity) self.comboBox_Parity = QtWidgets.QComboBox(self.layoutWidget) self.comboBox_Parity.setObjectName("comboBox_Parity") self.comboBox_Parity.addItem("") self.comboBox_Parity.addItem("") self.comboBox_Parity.addItem("") self.comboBox_Parity.addItem("") self.comboBox_Parity.addItem("") self.horizontalLayout_5.addWidget(self.comboBox_Parity) self.verticalLayout.addLayout(self.horizontalLayout_5) self.horizontalLayout_7 = QtWidgets.QHBoxLayout() self.horizontalLayout_7.setObjectName("horizontalLayout_7") self.label_CTS = QtWidgets.QLabel(self.layoutWidget) self.label_CTS.setMaximumSize(QtCore.QSize(60, 16777215)) self.label_CTS.setObjectName("label_CTS") self.horizontalLayout_7.addWidget(self.label_CTS) self.comboBox_FlowCtrl = QtWidgets.QComboBox(self.layoutWidget) self.comboBox_FlowCtrl.setObjectName("comboBox_FlowCtrl") self.comboBox_FlowCtrl.addItem("") self.comboBox_FlowCtrl.addItem("") self.comboBox_FlowCtrl.addItem("") self.horizontalLayout_7.addWidget(self.comboBox_FlowCtrl) self.verticalLayout.addLayout(self.horizontalLayout_7) self.groupBox = QtWidgets.QGroupBox(self.centralwidget) self.groupBox.setGeometry(QtCore.QRect(250, 20, 871, 471)) self.groupBox.setObjectName("groupBox") self.textBrowserRecvArea = QtWidgets.QTextBrowser(self.groupBox) self.textBrowserRecvArea.setGeometry(QtCore.QRect(10, 20, 851, 441)) self.textBrowserRecvArea.setObjectName("textBrowserRecvArea") self.groupBox_2 = QtWidgets.QGroupBox(self.centralwidget) self.groupBox_2.setGeometry(QtCore.QRect(250, 500, 871, 161)) self.groupBox_2.setObjectName("groupBox_2") self.lineEdit_SendData = QtWidgets.QLineEdit(self.groupBox_2) self.lineEdit_SendData.setGeometry(QtCore.QRect(10, 20, 851, 51)) self.lineEdit_SendData.setObjectName("lineEdit_SendData") self.BtnSendData = QtWidgets.QPushButton(self.groupBox_2) self.BtnSendData.setGeometry(QtCore.QRect(10, 80, 71, 71)) self.BtnSendData.setObjectName("BtnSendData") self.groupBox_3 = QtWidgets.QGroupBox(self.centralwidget) self.groupBox_3.setGeometry(QtCore.QRect(10, 500, 221, 161)) self.groupBox_3.setObjectName("groupBox_3") self.BtnClearRecv = QtWidgets.QPushButton(self.groupBox_3) self.BtnClearRecv.setGeometry(QtCore.QRect(10, 20, 201, 61)) self.BtnClearRecv.setObjectName("BtnClearRecv") self.BtnClearSend = QtWidgets.QPushButton(self.groupBox_3) self.BtnClearSend.setGeometry(QtCore.QRect(10, 90, 201, 61)) self.BtnClearSend.setObjectName("BtnClearSend") MainWindow.setCentralWidget(self.centralwidget) self.menubar = QtWidgets.QMenuBar(MainWindow) self.menubar.setGeometry(QtCore.QRect(0, 0, 1135, 26)) self.menubar.setObjectName("menubar") MainWindow.setMenuBar(self.menubar) self.statusbar = QtWidgets.QStatusBar(MainWindow) self.statusbar.setObjectName("statusbar") MainWindow.setStatusBar(self.statusbar) self.retranslateUi(MainWindow) self.comboBox_Baudrate.setCurrentIndex(8) self.comboBox_ByteSize.setCurrentIndex(3) QtCore.QMetaObject.connectSlotsByName(MainWindow) def retranslateUi(self, MainWindow): _translate = QtCore.QCoreApplication.translate MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow")) self.groupBox_ComSettings.setTitle(_translate("MainWindow", "串口設(shè)置")) self.BtnOpenPort.setText(_translate("MainWindow", "打開串口")) self.BtnClosePort.setText(_translate("MainWindow", "關(guān)閉串口")) self.BtnScanPort.setText(_translate("MainWindow", "掃描端口")) self.label_ComPort.setText(_translate("MainWindow", "串 口")) self.label_Baudrate.setText(_translate("MainWindow", "波特率")) self.comboBox_Baudrate.setCurrentText(_translate("MainWindow", "115200")) self.comboBox_Baudrate.setItemText(0, _translate("MainWindow", "2400")) self.comboBox_Baudrate.setItemText(1, _translate("MainWindow", "4800")) self.comboBox_Baudrate.setItemText(2, _translate("MainWindow", "9600")) self.comboBox_Baudrate.setItemText(3, _translate("MainWindow", "14400")) self.comboBox_Baudrate.setItemText(4, _translate("MainWindow", "19200")) self.comboBox_Baudrate.setItemText(5, _translate("MainWindow", "38400")) self.comboBox_Baudrate.setItemText(6, _translate("MainWindow", "56000")) self.comboBox_Baudrate.setItemText(7, _translate("MainWindow", "57600")) self.comboBox_Baudrate.setItemText(8, _translate("MainWindow", "115200")) self.comboBox_Baudrate.setItemText(9, _translate("MainWindow", "128000")) self.comboBox_Baudrate.setItemText(10, _translate("MainWindow", "256000")) self.comboBox_Baudrate.setItemText(11, _translate("MainWindow", "230400")) self.comboBox_Baudrate.setItemText(12, _translate("MainWindow", "1000000")) self.comboBox_Baudrate.setItemText(13, _translate("MainWindow", "2000000")) self.comboBox_Baudrate.setItemText(14, _translate("MainWindow", "3000000")) self.label_ByteSize.setText(_translate("MainWindow", "數(shù)據(jù)位")) self.comboBox_ByteSize.setCurrentText(_translate("MainWindow", "8")) self.comboBox_ByteSize.setItemText(0, _translate("MainWindow", "5")) self.comboBox_ByteSize.setItemText(1, _translate("MainWindow", "6")) self.comboBox_ByteSize.setItemText(2, _translate("MainWindow", "7")) self.comboBox_ByteSize.setItemText(3, _translate("MainWindow", "8")) self.label_Stopbits.setText(_translate("MainWindow", "停止位")) self.comboBox_Stopbits.setItemText(0, _translate("MainWindow", "1")) self.comboBox_Stopbits.setItemText(1, _translate("MainWindow", "1.5")) self.comboBox_Stopbits.setItemText(2, _translate("MainWindow", "2")) self.label_Parity.setText(_translate("MainWindow", "校驗位")) self.comboBox_Parity.setItemText(0, _translate("MainWindow", "None")) self.comboBox_Parity.setItemText(1, _translate("MainWindow", "Odd")) self.comboBox_Parity.setItemText(2, _translate("MainWindow", "Even")) self.comboBox_Parity.setItemText(3, _translate("MainWindow", "Mark")) self.comboBox_Parity.setItemText(4, _translate("MainWindow", "Space")) self.label_CTS.setText(_translate("MainWindow", "流 控")) self.comboBox_FlowCtrl.setItemText(0, _translate("MainWindow", "None")) self.comboBox_FlowCtrl.setItemText(1, _translate("MainWindow", "RTS/CTS")) self.comboBox_FlowCtrl.setItemText(2, _translate("MainWindow", "XON/XOFF")) self.groupBox.setTitle(_translate("MainWindow", "接收區(qū)")) self.groupBox_2.setTitle(_translate("MainWindow", "發(fā)送區(qū)")) self.BtnSendData.setText(_translate("MainWindow", "發(fā)送數(shù)據(jù)")) self.groupBox_3.setTitle(_translate("MainWindow", "收/發(fā)控制")) self.BtnClearRecv.setText(_translate("MainWindow", "清空接收區(qū)")) self.BtnClearSend.setText(_translate("MainWindow", "清空發(fā)送區(qū)"))
COM9接到了樹莓派Pico(Raspberry Pi Pico)的串口上,串口小工具發(fā)送的數(shù)據(jù)會通過樹莓派Pico接收后再轉(zhuǎn)發(fā)給串口小工具
Raspberry Pi Pico代碼
from machine import Pin,UART import utime uart0 = UART(0, baudrate=115200, bits=8, parity=None, stop=1, tx=Pin(16), rx=Pin(17), ) #uart0.deinit() txData = b'hello world\r\n' rxData = bytes() while True: while uart0.any() > 0: rxData = uart0.readline() uart0.write(rxData) print(rxData.decode('utf-8')) utime.sleep(0.2)
以上就是PyQt5+serial模塊實現(xiàn)一個串口小工具的詳細(xì)內(nèi)容,更多關(guān)于PyQt5 serial串口工具的資料請關(guān)注腳本之家其它相關(guān)文章!
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