From 0ac94b5b31addad628c8e4e1f9a7b62c22634ce3 Mon Sep 17 00:00:00 2001
From: John Shaver <john@jshaver.net>
Date: Wed, 4 Apr 2018 14:40:10 -0700
Subject: [PATCH] Switched from poling to interrupts

---
 main.py | 41 +++++++++++++++++++++++++++--------------
 1 file changed, 27 insertions(+), 14 deletions(-)

diff --git a/main.py b/main.py
index d81db8d..9bbf806 100644
--- a/main.py
+++ b/main.py
@@ -3,19 +3,32 @@
 import RPi.GPIO as GPIO
 import time
 
-GPIO.setmode(GPIO.BCM)
 
-GPIO.setup(23, GPIO.IN, pull_up_down=GPIO.PUD_UP)
-GPIO.setup(24, GPIO.OUT)
+def buttonEventHandler(value):
+    print "buton event!"
+    if value is 0:
+        GPIO.output(24, True)
+        print('Button Pressed...')
+    else:
+        GPIO.output(24, False)
+        print('Button Released...')
 
-try:
-    while True:
-        button_state = GPIO.input(23)
-        if button_state == False:
-            GPIO.output(24, True)
-            print('Button Pressed...')
-            time.sleep(0.2)
-        else:
-            GPIO.output(24, False)
-except:
-    GPIO.cleanup()
+def main():
+    print "Let's do this!"
+
+    GPIO.setmode(GPIO.BCM)
+
+    GPIO.setup(23, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+    GPIO.setup(24, GPIO.OUT)
+    #GPIO.add_event_detect(23, GPIO.FALLING)
+    #GPIO.add_event_callback(23, buttonEventHandler)
+    try:
+        while True:
+            GPIO.wait_for_edge(23, GPIO.BOTH)
+            buttonEventHandler(GPIO.input(23))
+    except KeyboardInterrupt as e:
+        GPIO.cleanup()
+        raise
+
+if __name__== "__main__":
+  main()