I'm trying to wrap my brain around the Galileo Gen 2 and reading sensors. This is an example of the Galileo Gen 2 and the Parallax PIR sensor being monitored with python.
The process is simple.
1. Initialize the digital pin.
2. Wait a few seconds for it to settle.
3. Then read the pin, it it goes high motion has been detected.
#!/usr/bin/env python # File : pir.py An example script of reading a Parallax PIR sensor # Author : Joe McManus email@example.com # Version : 0.1 02/24/2016 # Copyright (C) 2016 Joe McManus # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. import argparse import time import mraa import datetime parser = argparse.ArgumentParser(description='Script to monitor PIR sensor on Intel Galileo') parser.add_argument('pinNumber', help="The pin number the PIR is attached to. i.e. 2-13", type=int) parser.add_argument('--version', action='version',version='%(prog)s 0.1') args=parser.parse_args() pin = mraa.Gpio(args.pinNumber) pin.dir(mraa.DIR_IN) print("Waiting for PIR to settle") i=5 while i > 0: print i time.sleep(1) i=i-1 print("Detecting movement") try: while True: if pin.read(): print("Motion Detected " + str(datetime.datetime.now())) time.sleep(2) except: quit()
root@galileo:~# ./pir.py 4 Waiting for PIR to settle 5 4 3 2 1 Detecting movement Motion Detected 2016-02-25 00:08:46.188826 Motion Detected 2016-02-25 00:08:50.194598
Code can be downloaded here: https://github.com/joemcmanus/pir
Thought this might be helpful for others.