add demo with logging

Author: todbot

blink1_demo/demo_logging.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+
+"""
+demo_logging -- simple demo of blink1 library with logging
+
+run with:
+DEBUGLBLINK1=1 python3 ./blink1_demo/demo_logging.py
+
+"""
+from blink1.blink1 import Blink1
+
+import time,sys
+
+import logging
+
+logging.basicConfig()
+#logging.basicConfig(format='%(asctime)s %(message)s', level=logging.INFO)
+#logging.basicConfig(filename="test.log", format='%(filename)s: %(message)s', filemode='w')
+log = logging.getLogger(__name__)
+log.setLevel(logging.DEBUG)
+log.info("hello info")
+log.debug("hello debug")
+log.warning("hello warning")
+log.error("hello error")
+
+try:
+    blink1 = Blink1()
+except:
+    log.error("no blink1 found")
+    sys.exit()
+
+log.info("blink(1) found")
+
+log.info("  serial number: " + blink1.get_serial_number())
+log.info("  firmware version: " + blink1.get_version())
+
+log.info("fading to #ffffff")
+blink1.fade_to_rgb(1000, 255, 255, 255)
+
+log.info("waiting 2.5 seconds, unplug to check error raising...");
+time.sleep(2.5)
+
+log.info("fading to #000000")
+blink1.fade_to_color(1000, 'black')
+
+log.info("closing connection to blink(1)")
+blink1.close()
+
+log.info("done")