From 8876e865bc6f60772a6a2b44d0cbf40ccaf9ff3f Mon Sep 17 00:00:00 2001
From: Matthew Stratford <hi@mstratford.net>
Date: Wed, 7 Apr 2021 19:54:27 +0100
Subject: [PATCH] Fix serial init

---
 controllers/mattchbox_usb.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/controllers/mattchbox_usb.py b/controllers/mattchbox_usb.py
index 23ac77b..36b6044 100644
--- a/controllers/mattchbox_usb.py
+++ b/controllers/mattchbox_usb.py
@@ -90,7 +90,7 @@ class MattchBox(Controller):
 
             if self.next_port != None:
               self.connect(self.next_port)
-              if self.ser.is_open:
+              if self.ser and self.ser.is_open:
                 self.port = self.next_port # We connected successfully, make it stick.
                 self.server_state.update("ser_connected", True)
                 continue # skip the sleep.