swapped function for with ... rc as and removed duplicate pin init

Author: Mikey Sklar

Basic_Resistor_Sensor_Reading_on_Raspberry_Pi/Basic_Resistor_Sensor_Reading_on_Raspberry_Pi.py

@@ -5,25 +5,22 @@
 import board
 from digitalio import DigitalInOut, Direction
 
-def RCtime (RCpin):
-    reading = 0
+RCpin = board.D18
 
-    # setup pin as output and direction low value
-    rc = DigitalInOut(RCpin)
-    rc.direction = Direction.OUTPUT
-    rc.value = False
+while True:
+    with DigitalInOut(RCpin) as rc:
+        reading = 0
 
-    time.sleep(0.1)
+        # setup pin as output and direction low value
+        rc.direction = Direction.OUTPUT
+        rc.value = False
 
-    # setup pin as input and wait for low value
-    rc = DigitalInOut(RCpin)
-    rc.direction = Direction.INPUT
+        time.sleep(0.1)
 
-    # This takes about 1 millisecond per loop cycle
-    while rc.value is False:
-        reading += 1
-    return reading
+        # setup pin as input and wait for low value
+        rc.direction = Direction.INPUT
 
-while True:
-    result = RCtime(board.D18)     # Read RC timing using pin #18
-    print(result)
+        # This takes about 1 millisecond per loop cycle
+        while rc.value is False:
+            reading += 1
+        print(reading)