X-Git-Url: https://git.ucc.asn.au/?p=uccvend-vendserver.git;a=blobdiff_plain;f=sql-edition%2Fservers%2FVendingMachine.py;h=ee9b0634ab4d96e75aa83d68b396c8d7daf48309;hp=709b90f29ae61c0cae9e4f055d481592701635d7;hb=f7489efb7f8215fdbdf4e8be4cfc1d0f1cadfb91;hpb=9121df4fc1cb21d36ade2605a88d87bdeb7dd72e

diff --git a/sql-edition/servers/VendingMachine.py b/sql-edition/servers/VendingMachine.py
index 709b90f..ee9b063 100644
--- a/sql-edition/servers/VendingMachine.py
+++ b/sql-edition/servers/VendingMachine.py
@@ -3,6 +3,7 @@ import re
 from CRC import do_crc
 from select import select
 import socket, logging
+from time import time, sleep
 
 asynchronous_responses = [	'400', '401', # door open/closed
 				'610',        # switches changed
@@ -12,6 +13,7 @@ asynchronous_responses = [	'400', '401', # door open/closed
 DOOR = 1
 SWITCH = 2
 KEY = 3
+TICK = 4
 
 class VendingException(Exception): pass
 
@@ -144,6 +146,7 @@ class VendingMachine:
 	def display(self, string):
 		if len(string) > 10:
 			string = string[0:10]
+		string = re.sub('(.)\.', lambda match: '.'+match.group(1), string)
 		self.wfh.write('D'+string+'\n')
 		(code, string) = self.get_response()
 		return (code == '300', code, string)
@@ -151,6 +154,7 @@ class VendingMachine:
 	def next_event(self, timeout = None):
 		# we don't want to buffer in the serial port, so we get all the events
 		# we can ASAP.
+		if timeout < 0: timeout = 0
 		if len(self.events) > 0: timeout = 0
 		while True:
 			(r, _, _) = select([self.rfh], [], [], timeout)
@@ -159,7 +163,7 @@ class VendingMachine:
 				timeout = 0
 			else:
 				break
-		if len(self.events) == 0: return None
+		if len(self.events) == 0: return (TICK, time())
 		ret = self.events[0]
 		del self.events[0]
 		return ret