upm/examples/python/stepmotor.py

#!/usr/bin/python
# 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
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import time, sys, signal, atexit
import pyupm_stepmotor as mylib

# Instantiate a StepMotor object on pins 2 (dir) and 3 (step)
stepper = mylib.StepMotor(2, 3)

## 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
def exitHandler():
    print "Exiting"
    sys.exit(0)

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

print "Rotating 1 revolution forward and back at 60 rpm."
stepper.setSpeed(60)
stepper.stepForward(200)
time.sleep(1)
stepper.stepBackward(200)
time.sleep(1)

print "Rotating 1 revolution forward and back at 150 rpm."
stepper.setSpeed(150)
stepper.stepForward(200)
time.sleep(1)
stepper.stepBackward(200)
time.sleep(1)

print "Rotating 1 revolution forward and back at 300 rpm."
stepper.setSpeed(300)
stepper.stepForward(200)
time.sleep(1)
stepper.stepBackward(200)
time.sleep(1)