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datapage.cpp
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datapage.cpp
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/*
Copyright 2010 Keywan Tonekaboni, Florian Fusco, Stefanie Schirmer, Alexander Lenhardt, Erik Weitnauer <eweitnauer at gmail.com>
This file is part of Soldering Skaters Nokia Push Project.
Soldering Skaters Nokia Push Project is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Soldering Skaters Nokia Push Project is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Soldering Skaters Nokia Push Project. If not, see <http://www.gnu.org/licenses/>.
*/
#include "datapage.h"
#include "btcapture.h"
DataPage::DataPage(QWidget *parent) :
QWidget(parent), recording(false)
{
layout = new QHBoxLayout();
buttonBack = new ShinyButton("Back","small", "width:178;");
buttonRecord = new ShinyButton("Record","small", "width:178;");
listWidget = new QListWidget;
listWidget->setObjectName("tightList");
vbox = new QVBoxLayout();
vbox->addWidget(buttonBack);
vbox->addWidget(buttonRecord);
layout->addWidget(listWidget);
layout->addSpacing(10);
layout->addLayout(vbox);
setLayout(layout);
connect(buttonBack,SIGNAL(clicked()), this, SIGNAL(backPressed()));
connect(buttonRecord,SIGNAL(clicked()), this, SLOT(recordPressed()));
show();
}
void DataPage::dataReceived(QString d) {
data.append(d);
}
QList<int> DataPage::parseData(QString data) {
QStringList s = data.split(",");
QList<int> d;
if(s.size()<10) { // workaround for missing numbers. lost during transmission
for(int i=0;i<10;i++) d << 300;
} else {
for(int i=0;i<s.size();i++) d << (int)s[i].toDouble();
}
return d;
}
void DataPage::analyze() {
double secs = 0.001 * time.elapsed();
listWidget->addItem(QString(
"Recorded data for %1 seconds:").arg(secs, 0, 'g', 2));
double dps = double(data.size())/secs;
listWidget->addItem(QString(
"Received %1 data packages (%2 per second)")
.arg(data.size()).arg(dps, 0, 'g', 5 ));
if (data.size() == 0) {
listWidget->addItem("No data received -- there is something wrong with "
"the communication between skateboard and phone!");
if (!BTCapture::instance()->isConnected()) {
listWidget->addItem("Try connecting to the skateboard first.");
}
return;
}
listWidget->addItem("Here are the first 3 received sets of sensor data: ");
for (int i=0; i<qMin(3,data.size()); ++i)
listWidget->addItem(" " + data[i]);
int channels = data[0].split(",").size();
listWidget->addItem(QString(
"The received data has %1 channels.").arg(channels));
if (channels < 10) {
listWidget->addItem(
"There is a problem with the data. There should be at least 10 "
"comma-separated values.");
return;
}
// calc min, max and mean for each channel
QList<double> max, min, mean;
QList<int> d = parseData(data[0]);
channels = d.size();
for (int c=0; c<channels; ++c) {
max.append(d[c]);
min.append(d[c]);
mean.append(d[c]);
}
for (int i=1; i<data.size(); ++i) {
QList<int> d = parseData(data[i]);
for (int c=0; c<channels; ++c) {
min[c] = qMin(min[c], (double)d[c]);
max[c] = qMax(max[c], (double)d[c]);
mean[c] += d[c];
}
}
listWidget->addItem("Here are (mean | max - min) values for each channel:");
for (int c=0; c<channels; ++c) {
mean[c] = mean[c] / data.size();
listWidget->addItem(QString(" Channel %1: %2 | %3")
.arg(c).arg(mean[c]).arg(max[c]-min[c]));
}
}
void DataPage::recordPressed() {
BTCapture *capture = BTCapture::instance();
if (recording) {
// we already should have some data -- start analyzing
buttonRecord->setText("Record");
capture->disconnect(this);
recording = false;
analyze();
} else {
// start recording the data
// first clear the data list
data.clear();
listWidget->clear();
// now connect to the skateboard
time.start();
connect(capture, SIGNAL(dataCaptured(QString)), this, SLOT(dataReceived(QString)));
buttonRecord->setText("Stop");
recording = true;
}
}