new global ref fix

amiltonwong · Sep 19, 2016 · 1f0a1d2 · 1f0a1d2
1 parent 92593ac
commit 1f0a1d2
Showing 1 changed file with 2 additions and 4 deletions.
diff --git a/range_sensor.py b/range_sensor.py
@@ -7,9 +7,7 @@
 
 
 
-def calculate_distance():
-    TRIG = 2
-    ECHO = 3
+def calculate_distance(ECHO,TRIG):
     # Set output pin to low
     GPIO.output(TRIG, False)
 
@@ -36,7 +34,7 @@ def calculate_distance():
     GPIO.setup(ECHO, GPIO.IN)
     while True:
         try:
-            distance = calculate_distance()
+            distance = calculate_distance(ECHO,TRIG)
             print("Distance:", distance, "cm")
         except KeyboardInterrupt:
             sys.exit(0)