Merge pull request adafruit#48 from kattni/update-example

Add microcontroller pins to example.

Author: ladyada

adafruit_motor/stepper.py

@@ -73,13 +73,13 @@ class StepperMotor:
 
     **PWM**
 
-    :param ~pulseio.PWMOut ain1: `pulseio.PWMOut`-compatible output connected to the driver for
+    :param ~pulseio.PWMOut ain1: ``pulseio.PWMOut``-compatible output connected to the driver for
       the first coil (unipolar) or first input to first coil (bipolar).
-    :param ~pulseio.PWMOut ain2: `pulseio.PWMOut`-compatible output connected to the driver for
+    :param ~pulseio.PWMOut ain2: ``pulseio.PWMOut``-compatible output connected to the driver for
       the third coil (unipolar) or second input to first coil (bipolar).
-    :param ~pulseio.PWMOut bin1: `pulseio.PWMOut`-compatible output connected to the driver for
+    :param ~pulseio.PWMOut bin1: ``pulseio.PWMOut``-compatible output connected to the driver for
       the second coil (unipolar) or second input to second coil (bipolar).
-    :param ~pulseio.PWMOut bin2: `pulseio.PWMOut`-compatible output connected to the driver for
+    :param ~pulseio.PWMOut bin2: ``pulseio.PWMOut``-compatible output connected to the driver for
       the fourth coil (unipolar) or second input to second coil (bipolar).
     :param int microsteps: Number of microsteps between full steps. Must be at least 2 and even.
 

examples/motor_stepper_digitalio.py

@@ -1,5 +1,5 @@
 # Use this example for digital pin control of an H-bridge driver
-# like a TB6612 or L298N.
+# like a DRV8833, TB6612 or L298N.
 
 import time
 import board
@@ -9,13 +9,26 @@
 DELAY = 0.01
 STEPS = 200
 
+# You can use any available GPIO pin on both a microcontroller and a Raspberry Pi.
+# The following pins are simply a suggestion. If you use different pins, update
+# the following code to use your chosen pins.
+
+# To use with CircuitPython and a microcontroller:
 coils = (
-    digitalio.DigitalInOut(board.D19),  # A1
-    digitalio.DigitalInOut(board.D26),  # A2
-    digitalio.DigitalInOut(board.D20),  # B1
-    digitalio.DigitalInOut(board.D21),  # B2
+    digitalio.DigitalInOut(board.D9),  # A1
+    digitalio.DigitalInOut(board.D10),  # A2
+    digitalio.DigitalInOut(board.D11),  # B1
+    digitalio.DigitalInOut(board.D12),  # B2
 )
 
+# To use with a Raspberry Pi:
+# coils = (
+#     digitalio.DigitalInOut(board.D19),  # A1
+#     digitalio.DigitalInOut(board.D26),  # A2
+#     digitalio.DigitalInOut(board.D20),  # B1
+#     digitalio.DigitalInOut(board.D21),  # B2
+# )
+
 for coil in coils:
     coil.direction = digitalio.Direction.OUTPUT