examples: Cleanup Python examples

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

examples/python/led.py

@@ -0,0 +1,55 @@
+#!/usr/bin/env python
+
+# Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+# Copyright (c) 2018 Linaro Ltd.
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+# Example Usage: Reads maximum brightness value for user1 led and turns it
+#                on/off depending on current state. Then sets led trigger
+#                to heartbeat
+
+import mraa
+import time
+
+# initialise user1 led
+led_1 = mraa.Led("user1")
+
+# read maximum brightness
+val = led_1.readMaxBrightness()
+
+print("maximum brightness value for user1 led is: %d" % val);
+
+# turn led on/off depending on read max_brightness value
+if (val >= 1):
+    val = 0
+# never reached mostly
+else:
+    val = 1
+
+# set LED brightness
+led_1.setBrightness(val)
+
+# sleep for 5 seconds
+time.sleep(5)
+
+led_1.trigger("heartbeat")
+
+print("led trigger set to: heartbeat")