upm/examples/python/lsm303.py

#!/usr/bin/python

# Author: Brendan Le Foll <brendan.le.foll@intel.com>
# Contributions: Zion Orent <zorent@ics.com>
# Copyright (c) 2014 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_lsm303 as lsm303

def main():
    # Instantiate LSM303 compass on I2C
    myAccelrCompass = lsm303.LSM303(0)

    ## Exit handlers ##
    # This stops python from printing a stacktrace when you hit control-C
    def SIGINTHandler(signum, frame):
        raise SystemExit

    # This lets you run code on exit,
    # including functions from myAccelrCompass
    def exitHandler():
        print("Exiting")
        sys.exit(0)

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

    while(1):
        # Load coordinates into LSM303 object
        successFail = myAccelrCompass.getCoordinates()
        # in XYZ order. The sensor returns XZY,
        # but the driver compensates and makes it XYZ
        coords = myAccelrCompass.getRawCoorData()

        # Print out the X, Y, and Z coordinate data
        # using two different methods
        outputStr = "coor: rX {0} - rY {1} - rZ {2}".format(
        coords.__getitem__(0), coords.__getitem__(1),
        coords.__getitem__(2))
        print(outputStr)

        outputStr = "coor: gX {0} - gY {1} - gZ {2}".format(
        myAccelrCompass.getCoorX(), myAccelrCompass.getCoorY(),
        myAccelrCompass.getCoorZ())
        print(outputStr)

        # Get and print out the heading
        print("heading:", myAccelrCompass.getHeading())

        # Get the acceleration
        myAccelrCompass.getAcceleration();
        accel = myAccelrCompass.getRawAccelData();

        # Print out the X, Y, and Z acceleration data
        # using two different methods
        outputStr = "acc: rX {0} - rY {1} - Z {2}".format(
        accel.__getitem__(0), accel.__getitem__(1), accel.__getitem__(2))
        print(outputStr)

        outputStr = "acc: gX {0} - gY {1} - gZ {2}".format(
        myAccelrCompass.getAccelX(), myAccelrCompass.getAccelY(),
        myAccelrCompass.getAccelZ())
        print(outputStr)

        print(" ")
        time.sleep(1)

if __name__ == '__main__':
    main()