--- a/usb488.py	Wed May 13 17:09:14 2009 +0930
+++ b/usb488.py	Wed May 13 17:17:01 2009 +0930
@@ -195,8 +195,11 @@
             if wrote != len(chunk):
                 raise "Short write, got %d, expected %d" % (wrote, len(chunk))
 
-    def read(self):
-        """Read data from the device"""
+    def read(self, timeout = 0.2):
+        """Read data from the device, waits for up to timeout seconds for each USB transaction"""
+
+        # Mangle into milliseconds
+        _timeout = int(timeout * 1000.0)
 
         # Maximum we accept at once
         # Was 2^31 - 1 but that seems to make things take too long to
@@ -218,12 +221,12 @@
 
             # Send it
             #print "Sending " + str(pkt)
-            wrote = self.handle.bulkWrite(self.bulkoutep, pkt)
+            wrote = self.handle.bulkWrite(self.bulkoutep, pkt, _timeout)
             if wrote != len(pkt):
                 print "Short write, got %d, expected %d" % (wrote, len(pkt))
 
             #print "Reading.."
-            read = self.handle.bulkRead(self.bulkinep, datalen)
+            read = self.handle.bulkRead(self.bulkinep, datalen, _timeout)
             #print "Read %s bytes: %s" % (len(read), str(read))
 
             if read[0] != DEV_DEP_MSG_IN: