mirror of
https://github.com/brmlab/edubrm.git
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62 lines
1.9 KiB
Python
62 lines
1.9 KiB
Python
from PyQt4.QtGui import QWidget
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from PyQt4.QtGui import QGraphicsScene
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from PyQt4.QtGui import QPixmap
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from PyQt4.QtCore import pyqtSlot
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from PyQt4.QtCore import SIGNAL
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from PyQt4.QtCore import QObject
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from PyQt4.QtCore import QTimer
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from ModuleBUi import Ui_ModuleB
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from device import Device
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class ModuleBWidget(QWidget):
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def __init__(self):
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QWidget.__init__(self)
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self.ui = Ui_ModuleB()
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self.ui.setupUi(self)
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self.timer = QTimer()
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QObject.connect(self.timer, SIGNAL("timeout()"), self.read_inputs)
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self.scene_nobat = QGraphicsScene()
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self.scene_nobat.addPixmap(QPixmap('modules/ModuleB-nobat.png'))
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self.scene_off = QGraphicsScene()
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self.scene_off.addPixmap(QPixmap('modules/ModuleB-off.png'))
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self.scene_on = QGraphicsScene()
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self.scene_on.addPixmap(QPixmap('modules/ModuleB-on.png'))
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self.ui.widgetImg.setScene(self.scene_nobat)
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def read_inputs(self):
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r = self.dev.read()
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us = r[1]/1023.0 * 3.3 - 0.095
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if us < 0.0:
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us = 0.0
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uc = r[2]/1023.0 * 3.3 - 0.04
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if uc < 0.0:
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uc = 0.0
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i = (us-uc)/18*1000
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if i < 0.0:
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i = 0.0
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self.ui.labelUs.setText('Us = %0.3f V' % us)
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self.ui.labelUc.setText('Uc = %0.3f V' % uc)
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self.ui.labelI.setText('I = %0.2f mA' % i)
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if us < 1.5:
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self.ui.widgetImg.setScene(self.scene_nobat)
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else:
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if uc < 1:
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self.ui.widgetImg.setScene(self.scene_off)
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else:
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self.ui.widgetImg.setScene(self.scene_on)
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class ModuleB():
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def __init__(self):
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self.title = 'Simple DC circuit'
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self.widget = ModuleBWidget()
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def start(self):
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self.widget.dev = Device()
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self.widget.timer.start(50)
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def stop(self):
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self.widget.timer.stop()
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