之前自己寫了用于上位機(jī)做基本收發(fā)的界面，獨(dú)立出來相當(dāng)于一個(gè)串口助手，先貼圖：
創(chuàng)新互聯(lián)專注于朗縣企業(yè)網(wǎng)站建設(shè),響應(yīng)式網(wǎng)站設(shè)計(jì),商城網(wǎng)站定制開發(fā)。朗縣網(wǎng)站建設(shè)公司,為朗縣等地區(qū)提供建站服務(wù)。全流程定制網(wǎng)站建設(shè)，專業(yè)設(shè)計(jì)，全程項(xiàng)目跟蹤，創(chuàng)新互聯(lián)專業(yè)和態(tài)度為您提供的服務(wù)
功能作為串口助手來說還算完善，五個(gè)發(fā)送槽，一個(gè)接收槽，可以檢測可用串口并加上相關(guān)標(biāo)志，串口設(shè)置，記數(shù)功能，還有菜單欄上的文件操作和一些選擇功能。
下面說一說這個(gè)項(xiàng)目:
做這個(gè)串口助手分為兩步，第一步是設(shè)計(jì)界面，第二部是功能的代碼實(shí)現(xiàn)。
界面設(shè)計(jì)用Qt Designer，當(dāng)然用Qt Creator的界面編輯器也可以，只不過感覺Qt Designer更好用一點(diǎn)，因?yàn)榭梢噪S時(shí)運(yùn)行查看你的界面效果而不用編譯整個(gè)項(xiàng)目輸出一個(gè)可執(zhí)行程序再看看界面效果，這樣會(huì)影響效率。
界面設(shè)計(jì)你想界面是什么樣就怎么樣設(shè)計(jì)，拉控件，排版，設(shè)置大小，修改對(duì)象名等等，都在這上面做好，這些用程序?qū)懙脑挄?huì)很麻煩，工作量也大。這上面的對(duì)象名很重要，因?yàn)樵诤竺娴拇a實(shí)現(xiàn)中會(huì)用到，這個(gè)界面用到的控件還是挺多的，這里也不一個(gè)一個(gè)講，我直接貼出來：
senderGB_1 - 5都是一樣的，改下數(shù)就行
當(dāng)然，用你自己喜歡的命名也可以，后面程序改下名字就行。
先貼代碼
basictransceiver.h
#ifndef BASICTRANSCEIVER_H #define BASICTRANSCEIVER_H #include#include "ui_basictransceiver.h" class QTimer; class SerialPortSetting; class QSerialPort; class QPushButton; class BasicTransceiver : public QMainWindow, public Ui::BasicTransceiver { Q_OBJECT public: explicit BasicTransceiver(QWidget *parent = 0); ~BasicTransceiver(); void StringToHex(QString str, QByteArray &senddata); char ConvertHexChar(char ch); void startAutoSend(QPushButton *sendButton); void setConnections(); void writeHex(QTextEdit *textEdit); void writeChr(QTextEdit *textEdit); void resetCnt(); protected: void dragEnterEvent(QDragEnterEvent *event); void dropEvent(QDropEvent *event); private slots: void checkAutoSendCB(); void on_cleanButton_clicked(); void on_receiveTextBrowser_textChanged(); void setBaudRate(); void setParity(); void setDataBits(); void setStopBits(); void setFlowCtrl(); void on_connectButton_toggled(bool checked); void setComLabel(); void setBaudLabel(); void writeToBuf(); void enabledSendButton(); void disabledSendButton(); void enabledAutoSend(); void disabledAutoButton(); void resetAutoSendCB(); void readMyCom(); void checkAvailablePorts(); void on_checkAPButton_clicked(); void checkPort(); void on_resetCntButton_clicked(); void on_exitButton_clicked(); bool saveAs(); void open(); //void about(); private: bool loadFile(const QString &fileName); bool readFile(const QString &fileName); bool saveFile(const QString &fileName); bool writeFile(const QString &fileName); QTimer *Timer_AS;//自動(dòng)發(fā)送定時(shí)器 QTimer *Timer_UPDATE; QTimer *Timer_CP;//定時(shí)檢測串口是否存在 SerialPortSetting *SPSetting; QSerialPort *mySerialPort; QSet portSet; QVector iVec; QString senderFlag; QString readData; bool trashFlag = false; bool portIsOpen = false; int BaudCnt = 0; int ParityCnt = 0; int DataBitsCnt = 0; int StopBitsCnt = 0; int FlowCtrlCnt = 0; }; #endif // BASICTRANSCEIVER_H
basictransceiver.cpp
#include "basictransceiver.h" #include "serialportsetting.h" #include "ui_basictransceiver.h" #include "ui_serialportsetting.h" #include#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include BasicTransceiver::BasicTransceiver(QWidget *parent) : QMainWindow(parent) { setupUi(this); setFixedSize(1074, 627); receiveTextBrowser->setAcceptDrops(false);//缺省情況下，QTextEdit接受來自其他應(yīng)用程序拖拽來的文本，把文件名顯示出來。 senderTextEdit_1->setAcceptDrops(false); senderTextEdit_2->setAcceptDrops(false); senderTextEdit_3->setAcceptDrops(false); senderTextEdit_4->setAcceptDrops(false); senderTextEdit_5->setAcceptDrops(false); setAcceptDrops(true);//通過禁止QTextEdit控件的drop事件，允許主窗口得到drop事件 connectButton->setIcon(QIcon(":/images/open.png")); cleanButton->setIcon(QIcon(":/images/empty_bin.png")); checkAPButton->setIcon(QIcon(":/images/find.png")); resetCntButton->setIcon(QIcon(":/images/to_zero.png")); exitButton->setIcon(QIcon(":/images/exit.png")); actionWrite_data->setIcon(QIcon(":/images/write.png")); actionRead_data->setIcon(QIcon(":/images/read.png")); actionChoose_file->setIcon(QIcon(":/images/select_file.png")); exitAction->setIcon(QIcon(":/images/exit.png")); actionAbout->setIcon(QIcon(":/images/about.png")); sendButton_1->setIcon(QIcon(":/images/send.png")); sendButton_2->setIcon(QIcon(":/images/send.png")); sendButton_3->setIcon(QIcon(":/images/send.png")); sendButton_4->setIcon(QIcon(":/images/send.png")); sendButton_5->setIcon(QIcon(":/images/send.png")); setConnections(); emit checkAvailablePorts(); Timer_CP = new QTimer(this); Timer_UPDATE = new QTimer(this); connect(Timer_UPDATE, SIGNAL(timeout()), this, SLOT(repaint())); Timer_UPDATE->start(2000); Timer_AS = new QTimer(this); } BasicTransceiver::~BasicTransceiver() { } void BasicTransceiver::checkAutoSendCB() { QObject *signalSender = sender(); if ( signalSender->objectName() == "autoSendCB_1") { if (autoSendCB_1->isChecked()) { intervalSB_1->setEnabled(false); autoSendCB_2->setEnabled(false); autoSendCB_3->setEnabled(false); autoSendCB_4->setEnabled(false); autoSendCB_5->setEnabled(false); startAutoSend(sendButton_1); } else if (!autoSendCB_1->isChecked()) { Timer_AS->stop(); Timer_AS->disconnect(); intervalSB_1->setEnabled(true); autoSendCB_2->setEnabled(true); autoSendCB_3->setEnabled(true); autoSendCB_4->setEnabled(true); autoSendCB_5->setEnabled(true); enabledSendButton(); } } else if ( signalSender->objectName() == "autoSendCB_2") { if (autoSendCB_2->isChecked()) { intervalSB_2->setEnabled(false); autoSendCB_1->setEnabled(false); autoSendCB_3->setEnabled(false); autoSendCB_4->setEnabled(false); autoSendCB_5->setEnabled(false); startAutoSend(sendButton_2); } else if (!autoSendCB_2->isChecked()) { Timer_AS->stop(); Timer_AS->disconnect(); intervalSB_2->setEnabled(true); autoSendCB_1->setEnabled(true); autoSendCB_3->setEnabled(true); autoSendCB_4->setEnabled(true); autoSendCB_5->setEnabled(true); enabledSendButton(); } } else if ( signalSender->objectName() == "autoSendCB_3") { if (autoSendCB_3->isChecked()) { intervalSB_3->setEnabled(false); autoSendCB_1->setEnabled(false); autoSendCB_2->setEnabled(false); autoSendCB_4->setEnabled(false); autoSendCB_5->setEnabled(false); startAutoSend(sendButton_3); } else if (!autoSendCB_3->isChecked()) { Timer_AS->stop(); Timer_AS->disconnect(); intervalSB_3->setEnabled(true); autoSendCB_1->setEnabled(true); autoSendCB_2->setEnabled(true); autoSendCB_4->setEnabled(true); autoSendCB_5->setEnabled(true); enabledSendButton(); } } else if ( signalSender->objectName() == "autoSendCB_4") { if (autoSendCB_4->isChecked()) { intervalSB_4->setEnabled(false); autoSendCB_1->setEnabled(false); autoSendCB_2->setEnabled(false); autoSendCB_3->setEnabled(false); autoSendCB_5->setEnabled(false); startAutoSend(sendButton_4); } else if (!autoSendCB_4->isChecked()) { Timer_AS->stop(); Timer_AS->disconnect(); intervalSB_4->setEnabled(true); autoSendCB_1->setEnabled(true); autoSendCB_2->setEnabled(true); autoSendCB_3->setEnabled(true); autoSendCB_5->setEnabled(true); enabledSendButton(); } } else if ( signalSender->objectName() == "autoSendCB_5") { if (autoSendCB_5->isChecked()) { intervalSB_5->setEnabled(false); autoSendCB_1->setEnabled(false); autoSendCB_2->setEnabled(false); autoSendCB_3->setEnabled(false); autoSendCB_4->setEnabled(false); startAutoSend(sendButton_5); } else if (!autoSendCB_5->isChecked()) { Timer_AS->stop(); Timer_AS->disconnect(); intervalSB_5->setEnabled(true); autoSendCB_1->setEnabled(true); autoSendCB_2->setEnabled(true); autoSendCB_3->setEnabled(true); autoSendCB_4->setEnabled(true); enabledSendButton(); } } } //清除接收區(qū)的內(nèi)容 void BasicTransceiver::on_cleanButton_clicked() { if (trashFlag == true) { receiveTextBrowser->clear(); cleanButton->setIcon(QIcon(":/images/empty_bin.png")); } } void BasicTransceiver::on_receiveTextBrowser_textChanged() { QString tempStr = receiveTextBrowser->toPlainText(); if (!tempStr.isEmpty()) { trashFlag = true; if (autoClean->isChecked()){ if (tempStr.size() >6200 ){ receiveTextBrowser->clear(); cleanButton->setIcon(QIcon(":/images/empty_bin.png")); } } else { cleanButton->setIcon(QIcon(":/images/clean.png")); } } else { trashFlag = false; cleanButton->setIcon(QIcon(":/images/empty_bin.png")); } } void BasicTransceiver::setBaudRate() { if (portIsOpen) { if (BAUDCB->currentText() == "115200") mySerialPort->setBaudRate(QSerialPort::Baud115200); else if (BAUDCB->currentText() == "9600") mySerialPort->setBaudRate(QSerialPort::Baud9600); else if (BAUDCB->currentText() == "1200") mySerialPort->setBaudRate(QSerialPort::Baud1200); else if (BAUDCB->currentText() == "2400") mySerialPort->setBaudRate(QSerialPort::Baud2400); else if (BAUDCB->currentText() == "4800") mySerialPort->setBaudRate(QSerialPort::Baud4800); else if (BAUDCB->currentText() == "19200") mySerialPort->setBaudRate(QSerialPort::Baud19200); else if (BAUDCB->currentText() == "38400") mySerialPort->setBaudRate(QSerialPort::Baud38400); else if (BAUDCB->currentText() == "57600") mySerialPort->setBaudRate(QSerialPort::Baud57600); emit setBaudLabel(); if (BaudCnt) { statusBar()->showMessage("BaudRate set successfully", 2000); } ++BaudCnt; } } void BasicTransceiver::setParity() { if (portIsOpen) { if (ParityCB->currentText() == QString::fromLocal8Bit("無校驗(yàn)")) mySerialPort->setParity(QSerialPort::NoParity); else if (ParityCB->currentText() == QString::fromLocal8Bit("奇校驗(yàn)")) mySerialPort->setParity(QSerialPort::OddParity); else if (ParityCB->currentText() == QString::fromLocal8Bit("偶校驗(yàn)")) mySerialPort->setParity(QSerialPort::EvenParity); if (ParityCnt) { statusBar()->showMessage("Parity set successfully", 2000); } ++ParityCnt; } } void BasicTransceiver::setDataBits() { if (portIsOpen) { if (DataBitsCB->currentText() == "8") mySerialPort->setDataBits(QSerialPort::Data8); else if (DataBitsCB->currentText() == "7") mySerialPort->setDataBits(QSerialPort::Data7); else if (DataBitsCB->currentText() == "6") mySerialPort->setDataBits(QSerialPort::Data6); else if (DataBitsCB->currentText() == "5") mySerialPort->setDataBits(QSerialPort::Data5); if (DataBitsCnt) { statusBar()->showMessage("DataBits set successfully", 2000); } ++DataBitsCnt; } } void BasicTransceiver::setStopBits() { if (portIsOpen) { if (StopBitsCB->currentText() == "1") mySerialPort->setStopBits(QSerialPort::OneStop); else if (StopBitsCB->currentText() == "1.5") mySerialPort->setStopBits(QSerialPort::OneAndHalfStop); else if (StopBitsCB->currentText() == "2") mySerialPort->setStopBits(QSerialPort::TwoStop); if (StopBitsCnt) { statusBar()->showMessage("StopBits set successfully", 2000); } ++StopBitsCnt; } } void BasicTransceiver::setFlowCtrl() { if (portIsOpen) { if (FlowCtrlCB->currentText() == "off") mySerialPort->setFlowControl(QSerialPort::NoFlowControl); else if (FlowCtrlCB->currentText() == "hardware") mySerialPort->setFlowControl(QSerialPort::HardwareControl); else if (FlowCtrlCB->currentText() == "xonxoff") mySerialPort->setFlowControl(QSerialPort::SoftwareControl); if (FlowCtrlCnt) { statusBar()->showMessage("FlowCtrl set successfully", 2000); } ++FlowCtrlCnt; } } void BasicTransceiver::resetCnt() { BaudCnt = 0; ParityCnt = 0; DataBitsCnt = 0; StopBitsCnt = 0; FlowCtrlCnt = 0; } //打開和關(guān)閉串口 void BasicTransceiver::on_connectButton_toggled(bool checked) { if (checked == true) { mySerialPort = new QSerialPort(this); QString tempStr = COMCB->currentText(); tempStr.remove(" avail", Qt::CaseSensitive); mySerialPort->setPortName(tempStr); if (mySerialPort->open(QIODevice::ReadWrite)) { portIsOpen = true; emit setBaudRate(); emit setParity(); emit setDataBits(); emit setStopBits(); emit setFlowCtrl(); statusBar()->showMessage(mySerialPort->portName() + " is opened", 2000); emit setComLabel(); emit enabledSendButton(); emit enabledAutoSend(); COMCB->setEnabled(false); connect(Timer_CP, SIGNAL(timeout()), this, SLOT(checkPort())); Timer_CP->start(1000); connect(mySerialPort, SIGNAL(readyRead()), this, SLOT(readMyCom())); connectButton->setText(QString::fromLocal8Bit("關(guān)閉連接")); connectButton->setIcon(QIcon(":/images/close.png")); } else { QMessageBox::warning(this, QString::fromLocal8Bit("串口打開失敗"), QString::fromLocal8Bit("串口不存在或本串口" "已經(jīng)被占用，請(qǐng)重試！"), QMessageBox::Cancel); connectButton->setChecked(false); return; } } else if (checked == false) { if (Timer_AS->isActive()) { Timer_AS->stop(); emit resetAutoSendCB(); } if (Timer_CP->isActive()) Timer_CP->stop(); Timer_CP->disconnect(); if (mySerialPort->isOpen()) mySerialPort->close(); emit disabledSendButton(); emit disabledAutoButton(); emit setComLabel(); emit setBaudLabel(); resetCnt(); COMCB->setEnabled(true); connectButton->setText(QString::fromLocal8Bit("打開連接")); connectButton->setIcon(QIcon(":/images/open.png")); portIsOpen = false; } } //設(shè)置顯示串口號(hào)和波特率的Label void BasicTransceiver::setComLabel() { if (mySerialPort->isOpen()) { comLabel->setText(QString(mySerialPort->portName())); } else if (!mySerialPort->isOpen()) { comLabel->setText(QString::fromLocal8Bit("COM：#")); } } void BasicTransceiver::setBaudLabel() { if (mySerialPort->isOpen()) { int i_baud = mySerialPort->baudRate(); QString s_baud; baudLabel->setText(s_baud.setNum(i_baud)); } else if (!mySerialPort->isOpen()) { baudLabel->setText(QString::fromLocal8Bit("BAUD：#")); } } void BasicTransceiver::writeToBuf() { QObject *signalSender = sender(); if (signalSender->objectName() == "sendButton_1") { if (hexRB_1->isChecked()) { writeHex(senderTextEdit_1); } else { writeChr(senderTextEdit_1); } } else if (signalSender->objectName() == "sendButton_2") { if (hexRB_2->isChecked()) { writeHex(senderTextEdit_2); } else { writeChr(senderTextEdit_2); } } else if (signalSender->objectName() == "sendButton_3") { if (hexRB_3->isChecked()) { writeHex(senderTextEdit_3); } else { writeChr(senderTextEdit_3); } } else if (signalSender->objectName() == "sendButton_4") { if (hexRB_4->isChecked()) { writeHex(senderTextEdit_4); } else { writeChr(senderTextEdit_4); } } else if (signalSender->objectName() == "sendButton_5") { if (hexRB_5->isChecked()) { writeHex(senderTextEdit_5); } else { writeChr(senderTextEdit_5); } } } void BasicTransceiver::writeHex(QTextEdit *textEdit) { QString dataStr = textEdit->toPlainText(); //如果發(fā)送的數(shù)據(jù)個(gè)數(shù)為奇數(shù)的，則在前面最后落單的字符前添加一個(gè)字符0 if (dataStr.length() % 2){ dataStr.insert(dataStr.length()-1, '0'); } QByteArray sendData; StringToHex(dataStr, sendData); mySerialPort->write(sendData); RxLCD->display(RxLCD->value() + sendData.size()); } void BasicTransceiver::writeChr(QTextEdit *textEdit) { QByteArray sendData = textEdit->toPlainText().toUtf8(); if (!sendData.isEmpty() && !sendData.isNull()) { mySerialPort->write(sendData); } RxLCD->display(RxLCD->value() + sendData.size()); } void BasicTransceiver::StringToHex(QString str, QByteArray &senddata) //字符串轉(zhuǎn)換為十六進(jìn)制數(shù)據(jù)0-F { int hexdata,lowhexdata; int hexdatalen = 0; int len = str.length(); senddata.resize(len / 2); char lstr,hstr; for (int i = 0; i < len; ) { hstr = str[i].toLatin1(); if (hstr == ' ') { ++i; continue; } ++i; if (i >= len) break; lstr = str[i].toLatin1(); hexdata = ConvertHexChar(hstr); lowhexdata = ConvertHexChar(lstr); if ((hexdata == 16) || (lowhexdata == 16)) break; else hexdata = hexdata*16 + lowhexdata; ++i; senddata[hexdatalen] = (char)hexdata; ++hexdatalen; } senddata.resize(hexdatalen); } char BasicTransceiver::ConvertHexChar(char ch) { if ((ch >= '0') && (ch <= '9')) return ch - 0x30; else if ((ch >= 'A') && (ch <= 'F')) return ch - 'A' + 10; else if ((ch >= 'a') && (ch <= 'f')) return ch - 'a' + 10; else return ch - ch; } void BasicTransceiver::enabledSendButton() { sendButton_1->setEnabled(true); sendButton_2->setEnabled(true); sendButton_3->setEnabled(true); sendButton_4->setEnabled(true); sendButton_5->setEnabled(true); } void BasicTransceiver::disabledSendButton() { sendButton_1->setEnabled(false); sendButton_2->setEnabled(false); sendButton_3->setEnabled(false); sendButton_4->setEnabled(false); sendButton_5->setEnabled(false); } void BasicTransceiver::startAutoSend(QPushButton *sendButton) { connect(Timer_AS, SIGNAL(timeout()), sendButton, SIGNAL(clicked())); QString interval; if (sendButton->objectName() == "sendButton_1") { disabledSendButton(); Timer_AS->start(intervalSB_1->value()); statusBar()->showMessage(QString::fromLocal8Bit("每 ") + interval.setNum(intervalSB_1->value())+ QString::fromLocal8Bit("ms 自動(dòng)發(fā)送一次") , 2000); } else if (sendButton->objectName() == "sendButton_2") { disabledSendButton(); Timer_AS->start(intervalSB_2->value()); statusBar()->showMessage(QString::fromLocal8Bit("每 ") + interval.setNum(intervalSB_2->value())+ QString::fromLocal8Bit("ms 自動(dòng)發(fā)送一次") , 2000); } else if (sendButton->objectName() == "sendButton_3") { disabledSendButton(); Timer_AS->start(intervalSB_3->value()); statusBar()->showMessage(QString::fromLocal8Bit("每 ") + interval.setNum(intervalSB_3->value())+ QString::fromLocal8Bit("ms 自動(dòng)發(fā)送一次") , 2000); } else if (sendButton->objectName() == "sendButton_4") { disabledSendButton(); Timer_AS->start(intervalSB_4->value()); statusBar()->showMessage(QString::fromLocal8Bit("每 ") + interval.setNum(intervalSB_4->value())+ QString::fromLocal8Bit("ms 自動(dòng)發(fā)送一次") , 2000); } else if (sendButton->objectName() == "sendButton_5") { disabledSendButton(); Timer_AS->start(intervalSB_5->value()); statusBar()->showMessage(QString::fromLocal8Bit("每 ") + interval.setNum(intervalSB_5->value())+ QString::fromLocal8Bit("ms 自動(dòng)發(fā)送一次") , 2000); } } void BasicTransceiver::setConnections() { connect(autoSendCB_1, SIGNAL(stateChanged(int)), this, SLOT(checkAutoSendCB())); connect(autoSendCB_2, SIGNAL(stateChanged(int)), this, SLOT(checkAutoSendCB())); connect(autoSendCB_3, SIGNAL(stateChanged(int)), this, SLOT(checkAutoSendCB())); connect(autoSendCB_4, SIGNAL(stateChanged(int)), this, SLOT(checkAutoSendCB())); connect(autoSendCB_5, SIGNAL(stateChanged(int)), this, SLOT(checkAutoSendCB())); connect(actionWrite_data, SIGNAL(triggered()), this, SLOT(saveAs())); connect(actionRead_data, SIGNAL(triggered()), this, SLOT(open())); connect(actionChoose_file, SIGNAL(triggered()), this, SLOT(open())); connect(exitAction, SIGNAL(triggered()), qApp, SLOT(quit())); connect(actionAbout, SIGNAL(triggered()), qApp, SLOT(aboutQt())); connect(sendButton_1, SIGNAL(clicked()), this, SLOT(writeToBuf())); connect(sendButton_2, SIGNAL(clicked()), this, SLOT(writeToBuf())); connect(sendButton_3, SIGNAL(clicked()), this, SLOT(writeToBuf())); connect(sendButton_4, SIGNAL(clicked()), this, SLOT(writeToBuf())); connect(sendButton_5, SIGNAL(clicked()), this, SLOT(writeToBuf())); connect(BAUDCB, SIGNAL(currentIndexChanged(int)), this, SLOT(setBaudRate())); connect(ParityCB, SIGNAL(currentIndexChanged(int)), this, SLOT(setParity())); connect(DataBitsCB, SIGNAL(currentIndexChanged(int)), this, SLOT(setDataBits())); connect(StopBitsCB, SIGNAL(currentIndexChanged(int)), this, SLOT(setStopBits())); connect(FlowCtrlCB, SIGNAL(currentIndexChanged(int)), this, SLOT(setFlowCtrl())); } void BasicTransceiver::enabledAutoSend() { autoSendCB_1->setEnabled(true); autoSendCB_2->setEnabled(true); autoSendCB_3->setEnabled(true); autoSendCB_4->setEnabled(true); autoSendCB_5->setEnabled(true); } void BasicTransceiver::disabledAutoButton() { autoSendCB_1->setEnabled(false); autoSendCB_2->setEnabled(false); autoSendCB_3->setEnabled(false); autoSendCB_4->setEnabled(false); autoSendCB_5->setEnabled(false); } void BasicTransceiver::resetAutoSendCB() { autoSendCB_1->setChecked(false); autoSendCB_2->setChecked(false); autoSendCB_3->setChecked(false); autoSendCB_4->setChecked(false); autoSendCB_5->setChecked(false); } void BasicTransceiver::readMyCom() { QByteArray temp = mySerialPort->readAll(); QString buf; if (actionAlways_show->isChecked()) { if(!temp.isEmpty()){ if(chrReceive->isChecked()){ buf = temp; }else if(hexReceive->isChecked()){ for(int i = 0; i < temp.count(); i++){ QString s; s.sprintf("0x%02x, ", (unsigned char)temp.at(i)); buf += s; } } receiveTextBrowser->setText(receiveTextBrowser->document()->toPlainText() + buf); receiveTextBrowser->moveCursor(QTextCursor::End); //ui->statusBar->showMessage(tr("成功讀取%1字節(jié)數(shù)據(jù)").arg(temp.size())); } } TxLCD->display(TxLCD->value() + temp.size()); } //檢測可用串口并在可用串口號(hào)后面加上可用標(biāo)志 void BasicTransceiver::checkAvailablePorts() {//找不到存在串口是不會(huì)進(jìn)入到foreach內(nèi)部的。。。存在不一定可用 foreach ( const QSerialPortInfo &Info, QSerialPortInfo::availablePorts()) { QSerialPort availablePort; availablePort.setPortName(Info.portName()); if (availablePort.open(QIODevice::ReadWrite)) { int index = COMCB->findText(Info.portName()); COMCB->setItemText(index, Info.portName() + " avail"); COMCB->setCurrentIndex(index); iVec.push_back(index);//將修改了內(nèi)容的項(xiàng)索引添加到容器中 checkAPButton->setIcon(QIcon(":/images/find_it.png")); availablePort.close(); } } if (iVec.size() == 0) {checkAPButton->setIcon(QIcon(":/images/find.png"));} QString availPortCnt; statusBar()->showMessage(availPortCnt.setNum(iVec.size()) + " available ports", 2000); } //將選擇串口號(hào)的checkBox重置并重新檢測可用串口 void BasicTransceiver::on_checkAPButton_clicked() { if (!iVec.isEmpty()) { for (int i = 0; i != iVec.size(); ++i) { QString tempStr; COMCB->setItemText(iVec[i], QString("COM") + tempStr.setNum(iVec[i])); } COMCB->setCurrentIndex(0); iVec.clear(); } emit checkAvailablePorts(); } void BasicTransceiver::checkPort() { QSet portSet; foreach ( const QSerialPortInfo &Info, QSerialPortInfo::availablePorts()) { portSet.insert(Info.portName()); } if (portSet.find(mySerialPort->portName()) == portSet.end()) { QMessageBox::warning(this, QString::fromLocal8Bit("Application error"), QString::fromLocal8Bit("Fail with the following error : \n串口訪問失敗\n\nPort:%1") .arg(mySerialPort->portName()), QMessageBox::Close); emit on_connectButton_toggled(false); } } void BasicTransceiver::on_resetCntButton_clicked() { RxLCD->display(0); TxLCD->display(0); } void BasicTransceiver::on_exitButton_clicked() { qApp->quit(); } //另存為 bool BasicTransceiver::saveAs() { QString fileName = QFileDialog::getSaveFileName(this, tr("Save Data"), ".", tr("Text File (*.txt)")); if (fileName.isEmpty()) { return false; } return saveFile(fileName); } //保存文件 bool BasicTransceiver::saveFile(const QString &fileName) { if (!writeFile(fileName)) { statusBar()->showMessage(tr("Saving canceled"), 2000); return false; } statusBar()->showMessage(tr("Data saved"), 2000); return true; } bool BasicTransceiver::writeFile(const QString &fileName) { QFile file(fileName); if (!file.open(QIODevice::WriteOnly | QFile::Text)) { QMessageBox::warning(this, tr("Save Data"), tr("Cannot write file %1 : \n%2") .arg(file.fileName()) .arg(file.errorString())); return false; } QTextStream out(&file); out << receiveTextBrowser->toPlainText(); return true; } //打開文件的函數(shù) void BasicTransceiver::open() { QString fileName = QFileDialog::getOpenFileName(this, tr("Choose Text File"), ".", tr("Text File (*.txt)")); if (!fileName.isEmpty()) { loadFile(fileName); } } //加載文件 bool BasicTransceiver::loadFile(const QString &fileName) { if (!readFile(fileName)) { statusBar()->showMessage(tr("Loading canceled"), 2000); return false; } statusBar()->showMessage(tr("Data loaded"), 2000); return true; } //讀取文件 bool BasicTransceiver::readFile(const QString &fileName) { QFile file(fileName); if (!file.open(QIODevice::ReadOnly)) { QMessageBox::warning(this, tr("Read failed"), tr("Cannot read file %1 : \n%2.") .arg(file.fileName()) .arg(file.errorString())); return false; } QTextStream in(&file); QObject *signalSender = sender(); if (signalSender->objectName() == "actionRead_data"){ receiveTextBrowser->setText(in.readAll()); } else if (signalSender->objectName() == "actionChoose_file") { senderTextEdit_1->setText(in.readAll()); } return true; } void BasicTransceiver::dragEnterEvent(QDragEnterEvent *event) { if (event->mimeData()->hasFormat("text/uri-list")) event->acceptProposedAction(); } void BasicTransceiver::dropEvent(QDropEvent *event) { QList urls = event->mimeData()->urls(); if (urls.isEmpty()) return; QString fileName = urls.first().toLocalFile(); if (fileName.isEmpty()){ return; } loadFile(fileName); }
程序完全是面向?qū)ο蟮?，每個(gè)功能都是用相應(yīng)函數(shù)實(shí)現(xiàn)的，這也提高了函數(shù)的重用性。
本文是一個(gè)完整的Qt串口通信模塊QSerialPort開發(fā)完整實(shí)例，感興趣的可以細(xì)細(xì)閱讀源碼內(nèi)容，更多關(guān)于Qt串口通信知識(shí)請(qǐng)查看下面的相關(guān)鏈接
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重慶分公司
