def openPort(self):
self.smThread=SerialMonitorThread()
self.smThread.openPort(str(self.ui.cboxPorts.currentText()),57600)
# register signals for thread
self.connect(self.smThread,QtCore.SIGNAL('newData()'),self.updateData)
# start thread
self.smThread.start()
# disable gui elements
self.ui.cboxPorts.setEnabled(False)
self.ui.btnOpenPort.setEnabled(False)
self.ui.btnClosePort.setEnabled(True)
# init timer (gui delay)
self.timer.start(50)
class MainWindow(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
# populate combobox
self.ui.cboxPorts.addItem("/dev/ttyACM0")
self.ui.cboxPorts.addItem("/dev/ttyUSB0")
self.ui.cboxSpeed.addItems(["4800","9600","57600","115200"])
# configre gui
self.ui.btnClosePort.setEnabled(False)
# setup timer
# TODO: try lightweight timer QBasicTimer
# http://qt-project.org/doc/qt-4.8/widgets-wiggly.html
self.timer=QtCore.QTimer(self)
# register Qt signals
QtCore.QObject.connect(self.ui.btnOpenPort, QtCore.SIGNAL('clicked()'), self.openPort)
QtCore.QObject.connect(self.ui.btnClosePort, QtCore.SIGNAL('clicked()'), self.closePort)
QtCore.QObject.connect(self.timer, QtCore.SIGNAL('timeout()'), self.updatePlot)
# plot setup
#self.ui.plt1.showGrid(True,True,.3)
self.ui.plt1.setLabel('left','Pulse Intensity','[]')
self.ui.plt2.setLabel('left','Oxygen Dissolved','[]')
self.ui.plt3.setLabel('left','Pulse Sound','[]')
self.ui.plt4.setLabel('left','Pulse Rate','[]')
# variables
self.window=1000
self.pulseIntesity=[0.0]*self.window
self.oxygenDissolved=[0.0]*self.window
self.pulseSound=[0.0]*self.window
self.pulseRate=[0.0]*self.window
self.oxygenSaturation=[0.0]*self.window
self.searchTimeTooLong='E'
self.oxygenSaturationDecrease='E'
self.probeError='E'
self.searchPulse='E'
self.counter=0
def openPort(self):
self.smThread=SerialMonitorThread()
self.smThread.openPort(str(self.ui.cboxPorts.currentText()),57600)
# register signals for thread
self.connect(self.smThread,QtCore.SIGNAL('newData()'),self.updateData)
# start thread
self.smThread.start()
# disable gui elements
self.ui.cboxPorts.setEnabled(False)
self.ui.btnOpenPort.setEnabled(False)
self.ui.btnClosePort.setEnabled(True)
# init timer (gui delay)
self.timer.start(50)
def closePort(self):
# stop threads
self.smThread.close()
self.timer.stop()
# enable gui elements
self.ui.cboxPorts.setEnabled(True)
self.ui.btnOpenPort.setEnabled(True)
self.ui.btnClosePort.setEnabled(False)
def updateData(self):
data=self.smThread.getData()
print data
self.probeError=data[7]
self.searchTimeTooLong=data[5]
self.oxygenSaturationDecrease=data[6]
self.searchPulse=data[8]
if self.probeError=='K':
self.pulseIntesity[self.counter]=float(data[0])
self.oxygenDissolved[self.counter]=float(data[1])
self.pulseSound[self.counter]=float(data[2])
self.pulseRate[self.counter]=float(data[3])
self.oxygenSaturation[self.counter]=float(data[4])
# windowed plot
self.counter+=1
if self.counter==self.window-1:
self.counter=0
def updatePlot(self):
# clear last plots
self.ui.plt1.clear()
self.ui.plt2.clear()
self.ui.plt3.clear()
self.ui.plt4.clear()
# plot new data
self.ui.plt1.plot(self.pulseIntesity,pen='r')
self.ui.plt2.plot(self.oxygenDissolved,pen='g')
self.ui.plt3.plot(self.pulseSound,pen='b')
self.ui.plt4.plot(self.pulseRate,pen='w')
self.ui.plt4.plot(self.oxygenSaturation,pen='y')
# add line in current plotting position
self.ui.plt1.addLine(x=self.counter)
self.ui.plt2.addLine(x=self.counter)
self.ui.plt3.addLine(x=self.counter)
self.ui.plt4.addLine(x=self.counter)
# update status variables
if self.probeError=='K':
self.ui.lbProbeError.setEnabled(False)
else:
self.ui.lbProbeError.setEnabled(True)
if self.searchTimeTooLong=='K':
self.ui.lbSeachTimeTooLong.setEnabled(False)
else:
self.ui.lbSeachTimeTooLong.setEnabled(True)
if self.oxygenSaturationDecrease=='K':
self.ui.lbOxygenSaturationDecrease.setEnabled(False)
else:
self.ui.lbOxygenSaturationDecrease.setEnabled(True)
if self.searchPulse=='K':
self.ui.lbSearchPulse.setEnabled(False)
else:
self.ui.lbSearchPulse.setEnabled(True)