upm/examples/python/adxl335.py

#!/usr/bin/env python
# Author: Zion Orent <zorent@ics.com>
# 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.

from __future__ import print_function
import time, sys, signal, atexit
from upm import pyupm_adxl335 as upmAdxl335

def main():
    myAnalogAccel = upmAdxl335.ADXL335(0, 1, 2)

    print("Please make sure the sensor is completely still.")
    print("Sleeping for 2 seconds")
    time.sleep(2)

    ## Exit handlers ##
    # This 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 myAnalogAccel
    def exitHandler():
        print("Exiting")
        sys.exit(0)

    # Register exit handlers
    atexit.register(exitHandler)
    signal.signal(signal.SIGINT, SIGINTHandler)

    print("Calibrating...")
    myAnalogAccel.calibrate()

    x = upmAdxl335.new_intPointer()
    y = upmAdxl335.new_intPointer()
    z = upmAdxl335.new_intPointer()

    aX = upmAdxl335.new_floatPointer()
    aY = upmAdxl335.new_floatPointer()
    aZ = upmAdxl335.new_floatPointer()

    while (1):
        myAnalogAccel.values(x, y, z)
        outputStr = "Raw Values: X: {0} Y: {1} Z: {2}".format(
        upmAdxl335.intPointer_value(x), upmAdxl335.intPointer_value(y),
        upmAdxl335.intPointer_value(z))
        print(outputStr)

        myAnalogAccel.acceleration(aX, aY, aZ)
        outputStr = ("Acceleration: X: {0}g\n"
        "Acceleration: Y: {1}g\n"
        "Acceleration: Z: {2}g").format(upmAdxl335.floatPointer_value(aX),
        upmAdxl335.floatPointer_value(aY),
        upmAdxl335.floatPointer_value(aZ))
        print(outputStr)

        print(" ")

        time.sleep(.2)

if __name__ == '__main__':
    main()