From 10316b8fa69537303af3fd44c554aecb65b96aeb Mon Sep 17 00:00:00 2001
From: Scott Petersen <scott@nutech.com>
Date: Mon, 7 Jul 2014 11:18:03 -0700
Subject: [PATCH] Added support for catching exceptions when trying to use a
 vid/pid not supported under pyftdi.

---
 alarmdecoder/devices.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/alarmdecoder/devices.py b/alarmdecoder/devices.py
index ec46feb..9462926 100644
--- a/alarmdecoder/devices.py
+++ b/alarmdecoder/devices.py
@@ -405,6 +405,9 @@ class USBDevice(Device):
         except (usb.core.USBError, FtdiError), err:
             raise NoDeviceError('Error opening device: {0}'.format(str(err)), err)
 
+        except KeyError, err:
+            raise NoDeviceError('Unsupported device. ({0:04x}:{1:04x})  You probably need a newer version of pyftdi.'.format(err[0][0], err[0][1]))
+
         else:
             self._running = True
             self.on_open()