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action_buzz.py
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action_buzz.py
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import RPi.GPIO as GPIO
import time
from multiprocessing import Queue
def buzzer(queue):
''' Consumer of messages to run alarm buzzer via Queue
Acceptable messages
beep_once - Single short Beep
beep_twice - Two short beeps
alarm_start - Continuous alarm clock alarm
alarm_stop - Cancel continous alarm clock alarm
Beep instructions are considered a "priority" over alarm
'''
alarm = False
beeps = 0
#GPIO Setup
buzzer_pin = 21
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.setup(buzzer_pin, GPIO.IN)
GPIO.setup(buzzer_pin, GPIO.OUT)
while (True):
while (not queue.empty()):
action=queue.get()
print "Buzzproc Got message", action
if action == 'beep_once':
beeps += 1
elif action == 'beep_twice':
beeps += 2
elif action == 'beep_thrice':
beeps += 3
elif action == 'alarm_start':
alarm=True
else:
alarm=False
if beeps > 0:
while (beeps > 0):
GPIO.output(buzzer_pin, True)
time.sleep(0.1)
GPIO.output(buzzer_pin, False)
beeps -= 1
time.sleep(0.15)
elif alarm:
print "Alarm"
GPIO.output(buzzer_pin, True)
time.sleep(0.3)
GPIO.output(buzzer_pin, False)
time.sleep(1)
time.sleep(0.1)
def alarm(duration=0.5,pause=0.5,repeat=0):
#GPIO.setwarnings(False) # Less of a problem if you run the cleanup routine!
GPIO.setmode(GPIO.BCM)
GPIO.setup(buzzer_pin, GPIO.IN)
GPIO.setup(buzzer_pin, GPIO.OUT)
for x in range(0, repeat):
print "Beep!"
#GPIO.output(buzzer_pin, True)
time.sleep(duration) # beeps for 1 second
#GPIO.output(buzzer_pin, False)
time.sleep(pause) # silence for 1 second
GPIO.cleanup(buzzer_pin)
#alarm(duration=0.01,pause=0.5,repeat=2)