upm/examples/python/hmc5883l.py

#!/usr/bin/env python
from __future__ import print_function
# Author: Mihai Tudor Panu <mihai.tudor.panu@intel.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 time import sleep
from upm import pyupm_hmc5883l as hmc5883l

def main():
    # Create an I2C compass object and set declination
    hmc = hmc5883l.Hmc5883l(0)
    hmc.set_declination(0.2749)

    # Loop indefinitely
    while True:
        hmc.update() # Update the data
        pos = hmc.coordinates() # Read raw coordinates
        hdg = hmc.heading() # Read heading
        dir = hmc.direction() # Read direction

        # Print values
        print("Coor: %5d %5d %5d" % (pos[0], pos[1], pos[2]))
        print("Heading: %5.2f" % (hdg))
        print("Direction: %3.2f\n" % (dir))

        # Sleep for 1 s
        sleep(1)

if __name__ == '__main__':
    main()