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sensor.py
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sensor.py
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#!/usr/bin/python
#
# sensor.py
# Detect when door has been opened and play random audio from soundpack.
# The code is very straight forward and should be self explanatory.
# If need of assistance, use the email address provided below.
#
# Date: 11/02/2017
# Author: Jonathan Lundstrom
# Website: http://jonathanlundstrom.me
# Email: contact@jonathanlundstrom.me
import time
import random
import pygame
import os.path
import ConfigParser
import RPi.GPIO as GPIO
config = ConfigParser.ConfigParser()
config_path = os.path.realpath(__file__).replace(__file__, "config.ini")
config.read(config_path)
pygame.mixer.init()
pygame.mixer.fadeout(config.getint("Audio", "fadeout"))
pygame.mixer.music.set_volume(config.getfloat("Audio", "volume"))
current_state = 0
previous_state = 0
sensor_pin = config.getint("General", "gpio_pin")
soundpack_path = "soundpacks/%s" % config.get("Audio", "soundpack")
GPIO.setmode(GPIO.BCM)
GPIO.setup(sensor_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
def reloadConfig():
config.read(config_path)
pygame.mixer.fadeout(config.getint("Audio", "fadeout"))
pygame.mixer.music.set_volume(config.getfloat("Audio", "volume"))
return "soundpacks/%s" % config.get("Audio", "soundpack")
def playAudioClip(path):
pygame.mixer.music.load(path)
pygame.mixer.music.play()
while pygame.mixer.music.get_busy() == True:
continue
if config.getboolean("Features", "sound_on_start"):
playAudioClip("features/start_sound.wav")
try:
print "Waiting for door to open for the first time..."
while GPIO.input(sensor_pin) == 1:
current_state = 0;
while True:
current_state = GPIO.input(sensor_pin)
if current_state == 1 and previous_state == 0:
print "Door has been opened"
soundpack_path = reloadConfig()
if os.path.isdir(soundpack_path):
playAudioClip("%s/%s" % (soundpack_path, random.choice(os.listdir(soundpack_path))))
else:
print "Selected soundpack does not exist, please fix this and restart."
playAudioClip("features/error.wav")
previous_state = 1
elif current_state == 0 and previous_state == 1:
previous_state = 0
time.sleep(0.01)
except KeyboardInterrupt:
print " Hasta la vista, baby!"
GPIO.cleanup()
if config.getboolean("Features", "sound_on_exit"):
playAudioClip("features/exit_sound.wav")