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AFG.py
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import sys
import pylab as pl
from matplotlib.figure import Figure
from matplotlib.backends.backend_qt5agg import (
FigureCanvasQTAgg as FigureCanvas)
from PyQt5.Qt import *
from PyQt5.QtCore import *
from data_gen import gen
global mode
try:
import visa
except:
mode = 'ont_has_visa'
else:
mode = 'has_visa'
class AFG_MainWindow(QWidget):
def __init__(self,parent=None,GPIB=None):
QWidget.__init__(self,parent)
self.setWindowTitle('AFG')
self.GPIB=GPIB
self.resize(1000,500)
self.create_ui()
if mode == 'has_visa':
self.get_inst()
def create_ui(self):
self.create_widget_plot()
self.create_input_widget()
self.start_btn.clicked.connect(self.start)
self.on_btn.clicked.connect(self.on)
def create_widget_plot(self):
self.fig = Figure(figsize=(6, 6), dpi=80)
self.fig.patch.set_color('w')
self.ax = self.fig.add_axes([0, 0, 1, 1], axisbg=(0.6, 0.7, 0.8))
self.canvas = FigureCanvas(self.fig)
self.canvas.setParent(self)
# self.ax.plot(pl.linspace(0,6,100),pl.sin(pl.linspace(0,6,100)))
self.canvas.show()
def create_input_widget(self):
self.input_widget = QWidget(self)
self.input_widget.move(500, 0)
self.input_widget_layout = QGridLayout(self)
self.freq_lab = QLabel('Freq', self.input_widget)
self.high_lab = QLabel('High', self.input_widget)
self.low_lab = QLabel('Low', self.input_widget)
self.off_lab = QLabel('Off', self.input_widget)
self.freq_text = QLineEdit('60', self.input_widget)
self.freq_text.setFixedWidth(100)
self.high_text = QLineEdit('1', self.input_widget)
self.high_text.setFixedWidth(100)
self.low_text = QLineEdit('-1', self.input_widget)
self.low_text.setFixedWidth(100)
self.off_text = QLineEdit('0', self.input_widget)
self.off_text.setFixedWidth(100)
self.freq_cb = QComboBox(self.input_widget)
self.freq_cb.addItems(['Hz', 'KHz', 'MHz'])
self.high_cb = QComboBox(self.input_widget)
self.high_cb.addItems(['V', 'mV'])
self.low_cb = QComboBox(self.input_widget)
self.low_cb.addItems(['V', 'mV'])
self.off_cb = QComboBox(self.input_widget)
self.off_cb.addItems(['V', 'mV'])
self.shape_cb = QComboBox(self.input_widget)
self.shape_cb.addItems(['RAMP', 'SIN', 'SQU'])
self.start_btn = QPushButton('Start', self.input_widget)
self.on_btn = QPushButton('On', self.input_widget)
self.input_widget_layout.addWidget(self.freq_lab, 0, 0)
self.input_widget_layout.addWidget(self.high_lab, 1, 0)
self.input_widget_layout.addWidget(self.low_lab, 2, 0)
self.input_widget_layout.addWidget(self.off_lab, 3, 0)
self.input_widget_layout.addWidget(self.freq_text, 0, 1)
self.input_widget_layout.addWidget(self.high_text, 1, 1)
self.input_widget_layout.addWidget(self.low_text, 2, 1)
self.input_widget_layout.addWidget(self.off_text, 3, 1)
self.input_widget_layout.addWidget(self.freq_cb, 0, 2)
self.input_widget_layout.addWidget(self.high_cb, 1, 2)
self.input_widget_layout.addWidget(self.low_cb, 2, 2)
self.input_widget_layout.addWidget(self.off_cb, 3, 2)
self.input_widget_layout.addWidget(self.shape_cb, 4, 0, 4, 3)
self.input_widget_layout.addWidget(self.start_btn, 10, 0, 10, 3)
self.input_widget_layout.addWidget(self.on_btn, 20, 0, 20, 3)
self.input_widget.setLayout(self.input_widget_layout)
self.setStyleSheet(
"QLabel,QLineEdit,QComboBox,QPushButton{font-size:24px;font-family:Roman times;font-weight:bold;}")
def format_data(self):
self.real_freq = float(self.freq_text.text()) * 10 ** (
3 * ['Hz', 'KHz', 'MHz'].index(self.freq_cb.currentText()))
self.real_high = float(self.high_text.text()) * 10 ** (-3 * ['V', 'mV'].index(self.high_cb.currentText()))
self.real_low = float(self.low_text.text()) * 10 ** (-3 * ['V', 'mV'].index(self.low_cb.currentText()))
self.real_off = float(self.off_text.text()) * 10 ** (-3 * ['V', 'mV'].index(self.off_cb.currentText()))
def start(self):
self.format_data()
self.y_data = gen(self.shape_cb.currentText()) * pl.absolute(self.real_high - self.real_low) / 2 + self.real_off
self.x_data = pl.linspace(0, 1 / self.real_freq, pl.size(self.y_data))
self.ax.clear()
self.ax.plot(self.x_data * 1000, self.y_data)
print len(self.x_data)
print len(self.y_data)
self.canvas.draw()
if mode == 'has_visa':
self.inst.write('source1:function:shape ' + self.shape_cb.currentText())
self.inst.write('source1:frequency:fixed ' + self.freq_text.text() + self.freq_cb.currentText())
self.inst.write(
'source1:voltage:level:immediate:high ' + self.high_text.text() + self.high_cb.currentText())
self.inst.write('source1:voltage:level:immediate:low ' + self.low_text.text() + self.low_cb.currentText())
self.inst.write(
'source1:voltage:level:immediate:offset ' + self.off_text.text() + self.off_cb.currentText())
def on(self):
if mode == 'has_visa':
if self.on_btn.text() == 'On':
self.inst.write('output on')
self.on_btn.setText('Off')
else:
self.inst.write('output off')
self.on_btn.setText('On')
def get_inst(self):
self.inst = visa.ResourceManager().open_resource(self.GPIB)
def keyPressEvent(self,QKeyEvent):
event_value=QKeyEvent.key()
if event_value==Qt.Key_Q:
sys.exit()
if event_value in [Qt.Key_Return, Qt.Key_Enter]:
self.start_btn.click()
if __name__=='__main__':
AFG_GUI=QApplication(sys.argv)
mainwindow = AFG_MainWindow(GPIB='GPIB0::1::INSTR')
mainwindow.show()
sys.exit(AFG_GUI.exec_())