MIFARE Reader only triggers once unless a new card is used

VendServer/VendServer.py

@@ -390,6 +390,7 @@ def handle_getting_pin_idle(state, event, params, v, vstatus):
 	pass
 
 def handle_get_selection_idle(state, event, params, v, vstatus):
+	global _last_card_id
 	# don't care right now.
 	###
 	### State logging out ..
@@ -405,7 +406,7 @@ def handle_get_selection_idle(state, event, params, v, vstatus):
 		vstatus.cur_user = ''
 		vstatus.cur_pin = ''
 		vstatus.cur_selection = ''
-			
+		_last_card_id = -1
 		reset_idler(v, vstatus)
 
 	### State fully logged out ... reset variables
@@ -427,13 +428,14 @@ def handle_get_selection_idle(state, event, params, v, vstatus):
 
 
 def handle_get_selection_key(state, event, params, v, vstatus):
+	global _last_card_id
 	key = params
 	if len(vstatus.cur_selection) == 0:
 		if key == 11:
 			vstatus.cur_pin = ''
 			vstatus.cur_user = ''
 			vstatus.cur_selection = ''
-			
+			_last_card_id = -1
 			vstatus.mk.set_messages([(center('BYE!'), False, 1.5)])
 			reset_idler(v, vstatus, 2)
 			return
@@ -842,12 +844,17 @@ def handle_door_event(state, event, params, v, vstatus):
 		logging.warning('Leaving open door mode')
 		v.display("-YUM YUM!-")
 
+_last_card_id = -1
+
 def handle_mifare_event(state, event, params, v, vstatus):
+	global _last_card_id
 	card_id = params
 	# Translate card_id into uid.
-	if card_id == None:
+	if card_id == None or card_id == _last_card_id:
 		return
 
+	_last_card_id = card_id
+	
 	try:
 		vstatus.cur_user = get_uid(card_id)
 		logging.info('Mapped card id to uid %s'%vstatus.cur_user)
@@ -885,12 +892,15 @@ def handle_mifare_event(state, event, params, v, vstatus):
 		return
 
 def handle_mifare_add_user_event(state, event, params, v, vstatus):
- 	card_id = params
+	global _last_card_id
+	card_id = params
 
 	# Translate card_id into uid.
-	if card_id == None:
+	if card_id == None or card_id == _last_card_id:
 		return
 
+	_last_card_id = card_id
+	
 	try:
 		if get_uid(card_id) != None:
 			vstatus.mk.set_messages(