window.cpp

#include "window.h"
#include "adcreader.h"

#include <cmath>  // for sine stuff
double max=0.0;

Window::Window() : func(0),count(0)
{
	
	knob = new QwtKnob;
	// set up the gain knob 
	knob->setValue(0);

	// use the Qt signals/slots framework to update the gain -
	// every time the knob is moved, the setFunc function will be called
	connect( knob, SIGNAL(valueChanged(double)), SLOT(setFunc(double)) );

	// set up the thermometer
        //thr=new QPushButton;
	//thr->setText(tr("Threshold"));
	//thr->show();
        m_label = new QwtTextLabel;
	m_label->setText("Max: ");
	m_label->show();
	m1_label= new QwtTextLabel;
	m1_label->setText("0");
	m1_label->show();

	// set up the initial plot data
	for( int index=0; index<plotDataSize; ++index )
	{
		xData[index] = index;
		yData[index] = 0;
	}

	curve = new QwtPlotCurve;
	plot = new QwtPlot;
	// make a plot curve from the data and attach it to the plot
	//curve->setSamples(xData, yData, plotDataSize);
	curve->attach(plot);

	plot->replot();
	plot->show();


	// set up the layout - knob above thermometer
	vLayout = new QVBoxLayout;
	vLayout->addWidget(knob);
	vLayout->addWidget(m_label);
	vLayout->addWidget(m1_label);
	//vLayout->addWidget(thermo);

	// plot to the left of knob and thermometer
	hLayout = new QHBoxLayout;
	hLayout->addLayout(vLayout);
	hLayout->addWidget(plot);

	setLayout(hLayout);

	// This is a demo for a thread which can be
	// used to read from the ADC asynchronously.
	// At the moment it doesn't do anything else than
	// running in an endless loop and which prints out "tick"
	// every second.
	adcreader = new ADCreader();
	adcreader->start();
}

Window::~Window() {
	// tells the thread to no longer run its endless loop
	adcreader->quit();
	// wait until the run method has terminated
	adcreader->wait();
//	delete adcreader;
}

void Window::timerEvent( QTimerEvent * )
{
	int inval;
	double fsrvolt;
	double fsrres;
	double fsrcon;
	double fsrforce;
	double slope;
	double inv=3300;
	double val=65536;
	double res=10000;
	double condd=1000000;	
	double value;
	count =0;
	while(adcreader->read_enable()){
				
		inval=adcreader->get_samples();
		if (func==1){
			inval=inval+32768-12668;
			slope= inv/val;
			fsrvolt=slope*inval;
			fsrres=(inv-fsrvolt)*res;
			fsrres/=fsrvolt;
		
			fsrcon=condd;
			fsrcon/=fsrres;
			if(fsrcon<=1000){
				fsrforce=fsrcon/80;
			}else{
				fsrforce=fsrcon-1000;
				fsrforce/=30;
			}
			if (max<fsrforce){
				max=fsrforce;
			}
			char m_buf[sizeof(max)];
			sprintf(m_buf,"%f",max);
			m1_label->setText(m_buf);
			value=fsrforce;
		}else if (func==2){
			max=0;
			if (inval>=10000){
			 value=1;
			}else{
				max=0;
				value=0;
			}
		}else {
			value=inval;
		}
		
		// add the new input to the plot
		memmove( yData, yData+1, (plotDataSize-1) * sizeof(double) );
		yData[plotDataSize-1] = value;
		curve->setSamples(xData, yData, plotDataSize);
		plot->replot();
	}
	// set the thermometer value
	//thermo->setValue( inVal + 20 );
}


// this function can be used to change the gain of the A/D internal amplifier
void Window::setFunc(double func)
{
	// for example purposes just change the amplitude of the generated input
	this->func = func;
}