now starts without display too

client-barcode/display.py

@@ -28,11 +28,10 @@ class Display(threading.Thread):
 			self.serialport=None
 
 	def open_port(self):
-
-		self.mutex_get()
 		try:
 			self.serialport = serial.Serial(self.portname,9600,timeout=2,rtscts=True, dsrdtr=True)
 			#print ("Initializing display on port:\n  %s\n" % self.serialport )
+			self.mutex_get()
 			self.cmd_reset()
 			self.mutex_release()
 		except Exception as e:
@@ -40,8 +39,6 @@ class Display(threading.Thread):
 			#print ("Ignoring and trying to open it again later\n")
 			#print (e)
 			self.serialport = None
-			self.mutex_release()
-			pass
 		
 
 	#Helper-Function, scrolls text in a specific line.

client-barcode/freitagskasse.py

@@ -121,9 +121,11 @@ def item_info_page(item):
 	print('und kostet')
 	print()
 	if item.deposit > 0:
+		myDisplay.display_screen("PREISINFO","%s: %4.2f Euro (%4.2f Euro Pfand)" % (item.name,item.price,item.deposit))
 		print(indent + '%s%4.2f Euro%s  (plus %4.2f Euro Pfand) .' \
 				% (COLOR_MUCH, item.price, COLOR_RESET, item.deposit))
 	else:
+		myDisplay.display_screen("PREISINFO","%s: %4.2f Euro" % (item.name,item.price))
 		print(indent + '%s%4.2f Euro%s .' \
 				% (COLOR_MUCH, item.price, COLOR_RESET))
 	print()