Cours:Oscillogbf

python et Qt

Mise en place avec QtCreator

• créer un nouveau projet :
  • Application (Qt for Python) Window UI
  • choisir PySide2
  • choisir la version Python 3.x.x sans Virtual Environnement

QPushButton

import sys
import pyvisa

from PySide2 import QtCore, QtGui, QtWidgets
from PySide2.QtWidgets import QApplication, QWidget, QFileDialog, QPushButton
from PySide2.QtUiTools import QUiLoader


def appui_bouton():
    print("Appui sur le bouton")
    print(gbf.query('*IDN?'))


loader = QUiLoader()
app = QtWidgets.QApplication(sys.argv)
window = loader.load("form.ui", None)
window.my_push_button = window.findChild(QPushButton, "pushButton_2")
window.show()

window.my_push_button.clicked.connect(appui_bouton)

materiel=pyvisa.ResourceManager()
print(materiel.list_resources())
gbf=materiel.open_resource('TCPIP::10.98.35.144::INSTR')

app.exec_()

liens

• Media:Dg822_programming.pdf
• Media:MSO_DS1000Z_ProgrammingGuide_EN.pdf
• https://pyvisa.readthedocs.io/en/latest/introduction/communication.html
• https://connect.ed-diamond.com/GNU-Linux-Magazine/glmf-124/controle-d-instruments-scientifiques-les-protocoles-gpib-vxi11-et-usbtmc
• https://iosignal.fi/wp-content/uploads/DG800_ProgrammingGuide_EN.pdf
• https://github.com/lxi-tools/lxi-tools

Tests

banc de mesure  : 1 scope DS1074 + 1 gbf DG822

le script (basique ...) qui gère le tout :

---

#!/bin/bash

IPSCOPE=192.168.1.111

freq=100

while true; do
      # 1 sinus ampl=5V, offset nul, dephasage nul
      ./dg822_write.py ":sour1:appl:harm $freq,5,0,0"
      sleep 2
      # demande un AUTo mode au scope
      lxi scpi -a $IPSCOPE "AUT"
      sleep 5
      let "freq += 100"
      done

---

les commandes python :

---

#!/usr/bin/python3

import sys
import pyvisa
rm=pyvisa.ResourceManager()
inst=rm.open_resource('USB0::6833::1603::DG8A231301537::0::INSTR')

print("commande = ",sys.argv[1])
commande=sys.argv[1]

inst.write(commande)