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#include "scope.h" |
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#include <QPainter> |
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#include <QString> |
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#include <iostream> |
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#include <stdio.h> |
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using namespace std; |
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#define LEN 256 |
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#define DEF_SCALE 64 |
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#define DEF_SHIFT 0 |
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#define LEFT 10 |
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#define WIDTH 512 |
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#define HEIGHT 600 |
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#define PIXPT 2 |
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Scope::Scope(QWidget *parent) { |
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dataAquired=0; |
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head=-1; |
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data=new long[LEN*sizeof(long)]; ; |
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int i; |
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for(i=1;i<LEN;i++) |
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data[i]=0; |
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scale=DEF_SCALE; |
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shift=DEF_SHIFT; |
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scaleSlider = new QSlider(Qt::Horizontal); |
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scaleSlider->setRange(1, 128); |
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scaleSlider->setValue(DEF_SCALE); |
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connect(scaleSlider, SIGNAL(valueChanged(int)), this, SLOT(setScale(int))); |
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shiftSlider = new QSlider(Qt::Horizontal); |
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shiftSlider->setRange(-60000, +60000); |
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shiftSlider->setValue(DEF_SHIFT); |
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connect(shiftSlider, SIGNAL(valueChanged(int)), this, SLOT(setShift(int))); |
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updateTimer = new QTimer(this); |
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updateTimer->start(1); |
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connect(updateTimer, SIGNAL(timeout()), this, SLOT(getData())); |
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scaleSlider->setGeometry(QRect(50,250,400,10)); |
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scaleSlider->show(); |
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shiftSlider->setGeometry(QRect(50,300,800,10)); |
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shiftSlider->show(); |
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} |
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Scope::~Scope() { |
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delete [] data; |
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} |
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void Scope::paintEvent(QPaintEvent* event) { |
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QPainter painter(this); |
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if (head>-1) |
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painter.drawText(10,20,QString::number(data[head])); |
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if (dataAquired) { |
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painter.drawLine(LEFT-1,45,LEFT-1,HEIGHT); |
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painter.drawLine(LEFT+WIDTH,45,LEFT+WIDTH,HEIGHT); |
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painter.drawLine(LEFT-1,45,LEFT+WIDTH,45); |
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painter.drawLine(LEFT-1,HEIGHT,LEFT+WIDTH,HEIGHT); |
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painter.drawLine(LEFT-1,HEIGHT/2,LEFT+WIDTH,HEIGHT/2); |
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int i; |
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data[head] = (data[head] + shift)/scale; |
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data[head] = data[head] + HEIGHT/2; |
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for(i=head+1;i<LEN-1;i++) |
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painter.drawLine(PIXPT*(i-head)+LEFT,HEIGHT-data[i],PIXPT*(i-head+1)+LEFT,HEIGHT-data[i+1]); |
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painter.drawLine(PIXPT*(LEN-head-1)+LEFT,HEIGHT-data[LEN-1],PIXPT*(LEN-head+1)+LEFT,HEIGHT-data[0]); |
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for(i=0;i<head;i++) |
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painter.drawLine(PIXPT*(i+LEN-head)+LEFT,HEIGHT-data[i],PIXPT*(i+LEN-head+1)+10,HEIGHT-data[i+1]); |
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} |
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} |
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void Scope::getData() { |
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char c='v'; |
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FILE *serial=fopen("/dev/ttyUSB0","r+"); |
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fwrite(&c,sizeof(char),1,serial); // poprosime o data |
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if (head != LEN-1) |
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head++; |
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else |
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head=0; |
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fscanf(serial,"%ld",&data[head]); |
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fclose(serial); |
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cout << data[head] <<endl; |
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if (head>0) |
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dataAquired=1; |
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update(); |
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} |
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void Scope::setScale(int val) { |
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scale=val; |
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} |
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void Scope::setShift(int val) { |
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shift=val; |
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} |