def connLostHandler():
if not tivaConn.OFFLINE_MODE:
tivaConn.OFFLINE_MODE = True
mainWindow.statusBar().addWidget(connLostStatusBarLabel)
MessageWindow(
text=
'Connection was lost. App going to Offline mode and will be trying to reconnect',
type='Warning')
def setpointWriteButtonClicked(self):
try:
if float(self.setpointWriteLine.text()) <= 3.3 and float(
self.setpointWriteLine.text()) >= 0:
tivaConn.write('setpoint',
float(self.setpointWriteLine.text()))
else:
MessageWindow(
text=
"Setpoint value must be in interval [0; 3.3] Volts!",
type="Warning")
except ValueError:
pass
self.setpointWriteLine.clear()
self.setpointRefresh()
def setIerrLimits(self):
try:
if float(self.IerrMaxLineEdit.text()) < float(
self.IerrMinLineEdit.text()):
MessageWindow(text="Upper limit value is less than lower",
type='Error')
else:
tivaConn.write('IerrLimits',
float(self.IerrMinLineEdit.text()),
float(self.IerrMaxLineEdit.text()))
except ValueError:
pass
self.IerrMin, self.IerrMax = tivaConn.read('IerrLimits')
self.IerrMinLineEdit.setText('{}'.format(self.IerrMin))
self.IerrMaxLineEdit.setText('{}'.format(self.IerrMax))
def saveToEEPROM(self):
if not tivaConn.saveToEEPROM():
MessageWindow(text='Successfully saved', type='Info')
refreshAllPIDvalues()
else:
MessageWindow(text='Saving failed!', type='Warning')
def resetIerr(self):
tivaConn.resetIerr()
MessageWindow(text='Success. Current I-error: {}'.format(
tivaConn.read('Ierr')[0]),
type='Info')
break
except ValueError:
print("Wrong input! Must be like: 192.168.1.110/1200. Try again.")
app = QApplication(sys.argv)
tivaConn = MCUconn(IP, PORT)
# widget for showing in statusbar when connection lost
connLostStatusBarLabel = QLabel(
"<font color='red'>Connection was lost. Trying to reconnect...</font>")
DEMO_MODE = False
if tivaConn.checkConnection():
tivaConn.OFFLINE_MODE = True
DEMO_MODE = True
print("\nDemo mode entered")
MessageWindow(text="Due to no connection to regulator the application will start in Demo mode. All values are random. "\
"To exit Demo mode please restart application.")
else:
# if connection is present and no demo mode then create timer for connection checking
checkConnectionTimer = QTimer()
checkConnectionTimer.timeout.connect(checkConnectionTimerHandler)
checkConnectionTimer.start(5000) # every 5 seconds
# also create handler function for connection lost (for example, when reading some coefficient from MCU)
tivaConn.connLost.signal.connect(connLostHandler)
# save values for restoring
tivaConn.saveCurrentValues()
mainWindow = MainWindow()
mainWindow.show()
print('\nloaded.\n')
sys.exit(app.exec_())