mma7660: python example for mma7660 accelerometer

Signed-off-by: Zion Orent <zorent@ics.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

examples/python/mma7660.py

@@ -0,0 +1,81 @@
+#!/usr/bin/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.
+
+import time, sys, signal, atexit
+import pyupm_mma7660 as upmMMA7660
+
+# Instantiate an MMA7660 on I2C bus 0
+myDigitalAccelerometer = upmMMA7660.MMA7660(
+					upmMMA7660.MMA7660_I2C_BUS, 
+					upmMMA7660.MMA7660_DEFAULT_I2C_ADDR);
+
+
+## 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, including functions from myDigitalAccelerometer
+def exitHandler():
+	print "Exiting"
+	sys.exit(0)
+
+# Register exit handlers
+atexit.register(exitHandler)
+signal.signal(signal.SIGINT, SIGINTHandler)
+
+
+# place device in standby mode so we can write registers
+myDigitalAccelerometer.setModeStandby()
+
+# enable 64 samples per second
+myDigitalAccelerometer.setSampleRate(upmMMA7660.MMA7660.AUTOSLEEP_64)
+
+# place device into active mode
+myDigitalAccelerometer.setModeActive()
+
+x = upmMMA7660.new_intp()
+y = upmMMA7660.new_intp()
+z = upmMMA7660.new_intp()
+
+ax = upmMMA7660.new_floatp()
+ay = upmMMA7660.new_floatp()
+az = upmMMA7660.new_floatp()
+
+while (1):
+	myDigitalAccelerometer.getRawValues(x, y, z)
+	outputStr = ("Raw values: x = {0}"
+	" y = {1}" 
+	" z = {2}").format(upmMMA7660.intp_value(x),
+	upmMMA7660.intp_value(y),
+	upmMMA7660.intp_value(z))
+	print outputStr
+
+	myDigitalAccelerometer.getAcceleration(ax, ay, az)
+	outputStr = ("Acceleration: x = {0}"
+	"g y = {1}"
+	"g z = {2}g").format(upmMMA7660.floatp_value(ax),
+	upmMMA7660.floatp_value(ay),
+	upmMMA7660.floatp_value(az))
+	print outputStr
+	time.sleep(.5)

src/mma7660/pyupm_mma7660.i

@@ -1,5 +1,10 @@
 %module pyupm_mma7660
 %include "../upm.i"
+%include "cpointer.i"
+
+/* Send "int *" and "float *" to python as intp and floatp */
+%pointer_functions(int, intp);
+%pointer_functions(float, floatp);
 
 %feature("autodoc", "3");