From 5ed438bc6b43a589bfc12a22451ec73d777f4910 Mon Sep 17 00:00:00 2001 From: Zion Orent Date: Mon, 23 Mar 2015 15:04:46 -0400 Subject: [PATCH] grovemoisture: python example for grove moisture sensor Signed-off-by: Zion Orent Signed-off-by: Mihai Tudor Panu --- examples/python/grovemoisture.py | 61 ++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 examples/python/grovemoisture.py diff --git a/examples/python/grovemoisture.py b/examples/python/grovemoisture.py new file mode 100644 index 00000000..78d3fe47 --- /dev/null +++ b/examples/python/grovemoisture.py @@ -0,0 +1,61 @@ +#!/usr/bin/python +# Author: Zion Orent +# Copyright (c) 2015 Intel Corporation. +# +# 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. + +import time, sys, signal, atexit +import pyupm_grovemoisture as upmMoisture + +# Instantiate a Grove Moisture sensor on analog pin A0 +myMoisture = upmMoisture.GroveMoisture(0) + + +## Exit handlers ## +# This function stops python from printing a stacktrace when you hit control-C +def SIGINTHandler(signum, frame): + raise SystemExit + +# This function lets you run code on exit, including functions from myMoisture +def exitHandler(): + print "Exiting" + sys.exit(0) + +# Register exit handlers +atexit.register(exitHandler) +signal.signal(signal.SIGINT, SIGINTHandler) + + +# Values (approximate): +# 0-300, sensor in air or dry soil +# 300-600, sensor in humid soil +# 600+, sensor in wet soil or submerged in water + +# Read the value every second and print the corresponding moisture level +while(1): + moisture_val = myMoisture.value() + if (moisture_val >= 0 and moisture_val < 300): + result = "Dry" + elif (moisture_val >= 300 and moisture_val < 600): + result = "Moist" + else: + result = "Wet" + print "Moisture value: {0}, {1}".format(moisture_val, result) + time.sleep(1)