X-Git-Url: https://git.ucc.asn.au/?p=zanchey%2Fdispense2.git;a=blobdiff_plain;f=sql-edition%2Fservers%2FVendingMachine.py;h=b7d747aeb5ed1a8755717cbb1a9917ec62cd25ec;hp=aca860e11152fda781953aabacb253bf2b1d1397;hb=f9cc10a8add51fcddca0518ebbfc49e73328aa24;hpb=ca01734e7a5b3c12ae70e73c0b247f39771aaa97;ds=sidebyside

diff --git a/sql-edition/servers/VendingMachine.py b/sql-edition/servers/VendingMachine.py
index aca860e..b7d747a 100644
--- a/sql-edition/servers/VendingMachine.py
+++ b/sql-edition/servers/VendingMachine.py
@@ -20,7 +20,7 @@ MIFARE = 5
 class VendingException(Exception): pass
 
 class VendingMachine:
-	def __init__(self, rfh, wfh):
+	def __init__(self, rfh, wfh, use_mifare):
 		self.events = []
 		# Secret
 		self.secret = 'SN4CKZ0RZZZZZZZZ'
@@ -37,7 +37,11 @@ class VendingMachine:
 		while code != '000':
 			code = self.get_response()[0]
 		self.get_switches()
-		self.mifare = MIFAREClient()
+		if use_mifare:
+			self.mifare = MIFAREClient()
+			self.mifare_timeout = 0
+		else:
+			self.mifare = None
 
 	def await_prompt(self):
 		self.wfh.flush()
@@ -169,9 +173,9 @@ class VendingMachine:
 		if timeout == None: timeout = 60*60*24*365
 
 		# Make sure we go through the loop at least once.
-		if timeout <= 0: timeout = 0.01
+		if timeout < 0: timeout = 0
 
-		while timeout > 0:
+		while timeout >= 0:
 			this_timeout = min(timeout, 0.2)
 			timeout -= this_timeout
 
@@ -180,14 +184,17 @@ class VendingMachine:
 				self.get_response(async = True)
 				timeout = 0
 
-			try:
-				mifare_uid = self.mifare.get_card_uid()
-			except ValueError:
-				mifare_uid = None
-			if mifare_uid != None:
-				logging.info('Got MIFARE uid %s'%(str(mifare_uid)))
-				self.events.append((MIFARE, mifare_uid))
-				timeout = 0
+			if self.mifare:
+				now = time()
+				if now > self.mifare_timeout:
+					self.mifare_timeout = now + 0.5
+					mifare_uid = self.mifare.get_card_id()
+					if mifare_uid != None:
+						logging.info('Got MIFARE card id %s'%(str(mifare_uid)))
+						self.events.append((MIFARE, mifare_uid))
+						timeout = 0
+			if timeout == 0:
+				break
 
 		if len(self.events) == 0: return (TICK, time())
 		ret = self.events[0]