/Designs/Oscilloscope/SW/PC_side/qscope/scope.cpp
0,0 → 1,130
#include "scope.h"
 
#include <QPainter>
#include <QString>
 
#include <iostream>
#include <stdio.h>
 
using namespace std;
 
#define LEN 100
#define DEF_SCALE 1
#define DEF_SHIFT 0
 
#define LEFT 10
#define WIDTH 512
#define HEIGHT 600
 
#define PIXPT 2
 
Scope::Scope(QWidget *parent) {
dataAquired=0;
head=-1;
 
data=new int[LEN*sizeof(int)]; ;
 
int i;
for(i=1;i<LEN;i++)
data[i]=0;
 
scale=DEF_SCALE;
shift=DEF_SHIFT;
scaleSlider = new QSlider(Qt::Horizontal);
scaleSlider->setRange(1, 128);
scaleSlider->setValue(DEF_SCALE);
connect(scaleSlider, SIGNAL(valueChanged(int)), this, SLOT(setScale(int)));
shiftSlider = new QSlider(Qt::Horizontal);
shiftSlider->setRange(-60000, +60000);
shiftSlider->setValue(DEF_SHIFT);
connect(shiftSlider, SIGNAL(valueChanged(int)), this, SLOT(setShift(int)));
 
updateTimer = new QTimer(this);
updateTimer->start(150);
connect(updateTimer, SIGNAL(timeout()), this, SLOT(getData()));
scaleSlider->setGeometry(QRect(50,250,400,10));
scaleSlider->show();
shiftSlider->setGeometry(QRect(50,300,800,10));
shiftSlider->show();
 
// getData();
 
}
 
 
Scope::~Scope() {
delete [] data;
}
 
 
void Scope::paintEvent(QPaintEvent* event) {
 
QPainter painter(this);
 
if (head>-1)
painter.drawText(10,20,QString::number(data[head]));
 
if (dataAquired) {
painter.drawLine(LEFT-1,45,LEFT-1,HEIGHT);
painter.drawLine(LEFT+WIDTH,45,LEFT+WIDTH,HEIGHT);
painter.drawLine(LEFT-1,45,LEFT+WIDTH,45);
painter.drawLine(LEFT-1,HEIGHT,LEFT+WIDTH,HEIGHT);
 
// painter.drawLine(LEFT-1,HEIGHT/2,LEFT+WIDTH,HEIGHT/2);
 
int i;
 
/* for(i=head+1;i<LEN-1;i++)
painter.drawLine(PIXPT*(i-head)+LEFT,HEIGHT-data[i],PIXPT*(i-head+1)+LEFT,HEIGHT-data[i+1]);
painter.drawLine(PIXPT*(LEN-head-1)+LEFT,HEIGHT-data[LEN-1],PIXPT*(LEN-head+1)+LEFT,HEIGHT-data[0]);
for(i=0;i<head;i++)
painter.drawLine(PIXPT*(i+LEN-head)+LEFT,HEIGHT-data[i],PIXPT*(i+LEN-head+1)+10,HEIGHT-data[i+1]);*/
 
for(i=0;i<LEN;i++) {
data[i] = (data[i] + shift)/scale;
// data[i] = data[i] + HEIGHT/2;
}
 
for(i=0;i<LEN-1;i++) {
painter.drawLine(PIXPT*i+LEFT,HEIGHT-data[i],PIXPT*(i+1)+10,HEIGHT-data[i+1]);
}
}
}
 
void Scope::getData() {
char c='m';
uint8_t buffer[2*LEN];
 
FILE *serial=fopen("/dev/ttyUSB0","r+");
fwrite(&c,sizeof(char),1,serial); // poprosime o data
fread(buffer,sizeof(uint8_t),2*LEN,serial); // a berem je
 
int i;
for(i=0;i<LEN;i++) {
data[i]=buffer[2*i]*256+buffer[2*i+1];
cout << 1*data[i] <<endl;
}
dataAquired=1;
// head=LEN-1;
 
 
update();
// cout << "Screen updated."<<endl;
}
 
 
void Scope::setScale(int val) {
scale=val;
}
 
void Scope::setShift(int val) {
shift=val;
}