From 614feec316c95d28a9c77438add683b35bd9c9b4 Mon Sep 17 00:00:00 2001
From: "W. Trevor King" <wking@drexel.edu>
Date: Thu, 15 Mar 2012 23:41:28 -0400
Subject: [PATCH] Oops, build DigitalPort.write_mask with |= instead of &=.

If you start with 0, &= will never change anything :p.
---
 pyafm/digital_port.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pyafm/digital_port.py b/pyafm/digital_port.py
index 0abe5c1..4c8a401 100644
--- a/pyafm/digital_port.py
+++ b/pyafm/digital_port.py
@@ -43,7 +43,7 @@ class DigitalPort (object):
                 channel = self.subdevice.channel(
                     index=index, factory=_DigitalChannel)
                 channel.dio_config(c['direction'])
-                self.write_mask &= 1 << index
+                self.write_mask |= 1 << index
                 self.channels.append(channel)
         self.name = c['name']
 
-- 
2.26.2