利用QT实现上位机数据采集.zip

#include "paintWidget.h" #include <complex> paintWidget::paintWidget(QWidget *parent) : QWidget(parent), m_constWindowWidth(1900), m_constWindowHeight(1000) { this->setWindowTitle("paint"); for(int i = 0; i < m_sk_channleNum; i++) { m_chart[i] = new QChart(); m_chartView[i] = new QChartView(m_chart[i],this); m_cruveChannel[i] = new QLineSeries; m_axisX[i] = new QValueAxis; m_axisY[i] = new QValueAxis; m_minAxisX[i] = 0; m_maxAxisX[i] = 100; m_dataQueue[i].clear(); } mSetCanvas(); mDrawCoordinateAxes(); mInitImg(); m_addPointTimer = new QTimer; QObject::connect(m_addPointTimer, SIGNAL(timeout()), this, SLOT(on_TimerOutToDraw())); m_addPointTimer->start(100); } paintWidget::~paintWidget() { if(m_addPointTimer->isActive()) m_addPointTimer->stop(); delete m_addPointTimer; for(int i = 0; i < m_sk_channleNum; i++) { delete m_cruveChannel[i]; delete m_axisX[i]; delete m_axisY[i]; delete m_chart[i]; delete m_chartView[i]; } } void paintWidget::mSetCanvas() { resize(m_constWindowWidth, m_constWindowHeight); //reset window move(3, 3); int x[m_sk_maxChannleNum] = {0, (m_constWindowWidth - 10) / 2, 0, (m_constWindowWidth - 10) / 2}; int y[m_sk_maxChannleNum] = {0, 0, (m_constWindowHeight - 10) / 2, (m_constWindowHeight - 10) / 2}; QString title[m_sk_maxChannleNum] = {"ch0", "ch1", "ch2", "ch3"}; //int right[] = {(m_constWindowWidth - 10) / 2, 0, (m_constWindowWidth - 10) / 2, 0}; //int bottom[] = {(m_constWindowHeight - 10) / 2, (m_constWindowHeight - 10) / 2, 0, 0}; for(int i = 0; i < m_sk_channleNum; i++) { m_chart[i] = m_chartView[i]->chart(); m_chartView[i]->setRenderHint(QPainter::Antialiasing); m_chartView[i]->resize(m_constWindowWidth / 2 - 5, m_constWindowHeight / 2 - 5); //m_chartView[i]->setContentsMargins(left[i], top[i], right[i], bottom[i]); m_chartView[i]->move(x[i], y[i]); m_chart[i]->legend()->hide(); m_chart[i]->setTitle(title[i]); m_chartView[i]->show(); } } void paintWidget::mDrawCoordinateAxes() { for(int i = 0; i < m_sk_channleNum; i++) { //set axis x m_axisX[i]->setRange(m_minAxisX[i], m_maxAxisX[i]); m_axisX[i]->setLabelFormat("%d"); //format of value of axis x m_axisX[i]->setGridLineVisible(true); m_axisX[i]->setTickCount(10); //main scale m_axisX[i]->setMinorTickCount(5);//mini scale m_axisX[i]->setTitleText("t");//title m_chart[i]->addAxis(m_axisX[i], Qt::AlignBottom);//show axis //set axis y m_axisY[i]->setRange(-110, 110); m_axisY[i]->setLabelFormat("%d"); m_axisY[i]->setGridLineVisible(true); m_axisY[i]->setTickCount(10); //m_axisY->setMinorTickCount(5); m_axisY[i]->setTitleText("v"); m_chart[i]->addAxis(m_axisY[i], Qt::AlignLeft); } } void paintWidget::mInitImg() { QPen pen[m_sk_maxChannleNum]; //QColor color[m_sk_maxChannleNum] = {Qt::darkRed, Qt::darkGreen, Qt::darkBlue, Qt::black}; QString lineName[m_sk_maxChannleNum] = {QString::fromLocal8Bit("ch1"), QString::fromLocal8Bit("ch2"), QString::fromLocal8Bit("ch3"), QString::fromLocal8Bit("ch3")}; for(int i = 0; i < m_sk_channleNum ; i++) { m_cruveChannel[i]->setName(lineName[i]); m_chart[i]->addSeries(m_cruveChannel[i]);//set line to chart m_cruveChannel[i]->attachAxis(m_axisX[i]);//bind datas with axis, this code must be next to "addSeries" m_cruveChannel[i]->attachAxis(m_axisY[i]); pen[i].setColor(Qt::black); pen[i].setBrush(Qt::black); pen[i].setWidth(1); m_cruveChannel[i]->setPen(pen[i]); } } void paintWidget::on_PaintPoint(unsigned int data) { //qDebug()<< "data:" << data; unsigned int ch = (0x03000000 & data) >> 24; unsigned int realData = 0x00FFFFFF & data; if(realData & 0x800000)//extend 24-bit signed negative number to 32-bit signed number { realData += 0xFF000000; } //qDebug()<< "ch:" << ch << "finalData:" << (int)realData; m_dataQueue[ch].enqueue((int)realData * 250 / 4194303);//100 times of the real voltage } void paintWidget::on_TimerOutToDraw() { int queueSize = 0, dataCount = 0; QVector<QPointF> pointData[m_sk_maxChannleNum]; for(int i = 0; i < m_sk_channleNum ; i++) { queueSize = m_dataQueue[i].size(); //qDebug()<<"size["<<i<<"]: "<<queueSize; if(queueSize == 0)continue; pointData[i] = m_cruveChannel[i]->pointsVector(); dataCount = pointData[i].size(); if(dataCount >= m_maxAxisX[i] - m_minAxisX[i]) { pointData[i].removeFirst(); m_minAxisX[i]++; m_maxAxisX[i]++; m_axisX[i]->setRange(m_minAxisX[i], m_maxAxisX[i]); } pointData[i].append(QPointF(m_axisXIndex[i], m_dataQueue[i].dequeue())); m_axisXIndex[i]++; m_cruveChannel[i]->replace(pointData[i]); } }