From 70cb1ca0f512dbac30c55c9d641f2508704a4e91 Mon Sep 17 00:00:00 2001
From: Dave Astels <dastels@daveastels.com>
Date: Tue, 8 Jan 2019 16:18:18 -0500
Subject: [PATCH] Incorporate suggestions by Dan Halbert

---
 adafruit_debouncer.py | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/adafruit_debouncer.py b/adafruit_debouncer.py
index 14b368e..b4702ff 100644
--- a/adafruit_debouncer.py
+++ b/adafruit_debouncer.py
@@ -47,10 +47,11 @@
 
 import time
 import digitalio
+from micropython import const
 
-_DEBOUNCED_STATE = 0x01
-_UNSTABLE_STATE = 0x02
-_CHANGED_STATE = 0x04
+_DEBOUNCED_STATE = const(0x01)
+_UNSTABLE_STATE = const(0x02)
+_CHANGED_STATE = const(0x04)
 
 class Debouncer(object):
     """Debounce an input pin or an arbitrary predicate"""
@@ -68,10 +69,7 @@ def __init__(self, io_or_predicate, interval=0.010):
         if self.function():
             self._set_state(_DEBOUNCED_STATE | _UNSTABLE_STATE)
         self.previous_time = 0
-        if interval is None:
-            self.interval = 0.010
-        else:
-            self.interval = interval
+        self.interval = interval
 
 
     def _set_state(self, bits):