upm/examples/python/tex00.py

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#!/usr/bin/env python
# Author: Jon Trulson <jtrulson@ics.com>
# Copyright (c) 2016 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.
from __future__ import print_function
import time, sys, signal, atexit
from upm import pyupm_tex00 as sensorObj
def main():
## 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
def exitHandler():
print("Exiting")
sys.exit(0)
# Register exit handlers
atexit.register(exitHandler)
signal.signal(signal.SIGINT, SIGINTHandler)
print("Initializing...")
# Instantiate an TEX00 instance, using A0 for the analog input. In
# this example, we are using a 10K Ohm balance resistor and a TED
# (10k type 2) thermistor.
sensor = sensorObj.TEX00(0, 10000, sensorObj.TEX00.STYPE_THERMISTOR_TED)
print("Minimum temperature:", sensor.getTemperatureRangeMin(), "C")
print("Maximum temperature:", sensor.getTemperatureRangeMax(), "C")
print()
# update and print available values every second
while (1):
# update our values from the sensor
sensor.update()
if (sensor.isOutOfRange()):
print("Temperature out of range")
else:
# we show both C and F for temperature
print("Temperature:", sensor.getTemperature(), "C /", end=' ')
print(sensor.getTemperature(True), "F")
print()
time.sleep(1)
if __name__ == '__main__':
main()