X-Git-Url: https://git.ayoreis.com/Adafruit_Blinka-hackapet.git/blobdiff_plain/498d8fb1e9d1d3f45e570571d71e4a1cfc6f942d..4a33dc0ce6eee7103888bbbfde46617d7d3b59c8:/examples/bbb_digitalio.py?ds=inline

diff --git a/examples/bbb_digitalio.py b/examples/bbb_digitalio.py
index 25496d5..9d8af71 100755
--- a/examples/bbb_digitalio.py
+++ b/examples/bbb_digitalio.py
@@ -1,3 +1,6 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
 # Example of blinking LED on BeagleBone Black
 # https://www.adafruit.com/product/1876
 #
@@ -5,6 +8,16 @@
 # 1) connect anode (+) lead of LED to P9.12 pin
 # 2) connect cathode (-) lead to 1K Ohm resistor
 # 3) connect that 1K Ohm resistor to DGND (P9.1)
+#
+# NOTE: the pin mode can be verified with the command line
+# utility config-pin on the BeagleBoard.org Debian image
+#
+# To verify the pin is in GPIO mode:
+# debian@beaglebone:~$ config-pin -q p9.12
+# P9_12 Mode: gpio Direction: out Value: 0
+#
+# To set pin to GPIO mode:
+# $ config-pin p9.12 gpio
 
 import time
 import board