Make serial port access more rebust.

Cura/gui/configWizard.py

@@ -299,7 +299,7 @@ class UltimakerCheckupPage(InfoPage):
 				self.comm.close()
 				return False
 			print line.rstrip()
-			if line.startswith(replyStart):
+			if replyStart in line:
 				break
 		t.cancel()
 		return line.rstrip()
@@ -385,7 +385,7 @@ class UltimakerCalibrateStepsPerEPage(InfoPage):
 			line = self.comm.readline()
 			if line == '':
 				return
-			if line.startswith('start'):
+			if 'start' in line:
 				break
 		#Wait 3 seconds for the SD card init to timeout if we have SD in our firmware but there is no SD card found.
 		time.sleep(3)
@@ -417,7 +417,7 @@ class UltimakerCalibrateStepsPerEPage(InfoPage):
 				self.heatButton.Enable(True)
 				self.extrudeButton.Enable(True)
 				return
-			if line.startswith('start'):
+			if 'start' in line:
 				break
 		#Wait 3 seconds for the SD card init to timeout if we have SD in our firmware but there is no SD card found.
 		time.sleep(3)

Cura/gui/printWindow.py

@@ -358,7 +358,7 @@ class printWindow(wx.Frame):
 		self.feedrateRatioSupport = self.supportSpeedSelect.GetValue() / 100.0
 	
 	def AddTermLog(self, line):
-		self.termLog.AppendText(line)
+		self.termLog.AppendText(unicode(line, 'utf-8', 'replace'))
 	
 	def OnTermEnterLine(self, e):
 		line = self.termInput.GetValue()

Cura/util/machineCom.py

@@ -34,7 +34,7 @@ def baudrateList():
 
 class VirtualPrinter():
 	def __init__(self):
-		self.readList = ['start\n', 'Marlin: Virtual Marlin!\n']
+		self.readList = ['start\n', 'Marlin: Virtual Marlin!\n', '\x80\n']
 		self.temp = 0.0
 		self.targetTemp = 0.0
 		self.lastTempAt = time.time()
@@ -135,7 +135,7 @@ class MachineCom():
 			time.sleep(0.2)
 			starttime = time.time()
 			for line in ser:
-				if line.startswith('start'):
+				if 'start' in line:
 					ser.close()
 					ser = Serial(port, baudrate, timeout=2)
 					ser.setDTR(1)
@@ -151,7 +151,11 @@ class MachineCom():
 	def readline(self):
 		if self.serial == None:
 			return None
-		ret = self.serial.readline()
+		try:
+			ret = self.serial.readline()
+		except:
+			print "Unexpected error while reading serial port:", sys.exc_info()[0]
+			ret = ''
 		#if ret != '':
 		#	print "Recv: " + ret.rstrip()
 		return ret