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add lock to blinkenlight

This commit is contained in:
petrucci4prez 2017-06-17 14:26:29 -04:00
parent 1ea3761089
commit 2fef89ff7b
1 changed files with 6 additions and 3 deletions
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9
blinkenLights.py
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@ -3,7 +3,7 @@ Controls an LED using a GPIO pin
''' '''
import RPi.GPIO as GPIO import RPi.GPIO as GPIO
import time, logging import time, logging
from threading import Event from threading import Event, Lock
from exceptionThreading import ExceptionThread from exceptionThreading import ExceptionThread
from itertools import chain from itertools import chain
@ -12,9 +12,11 @@ logger = logging.getLogger(__name__)
class Blinkenlights(ExceptionThread): class Blinkenlights(ExceptionThread):
def __init__(self, pin, cyclePeriod=2): def __init__(self, pin, cyclePeriod=2):
self._stopper = Event() self._stopper = Event()
self._blink = Event()
self._lock = Lock()
self._pin = pin self._pin = pin
self._blink = Event()
self.setCyclePeriod(cyclePeriod) #cyclePeriod is length of one blink cycle in seconds self.setCyclePeriod(cyclePeriod) #cyclePeriod is length of one blink cycle in seconds
GPIO.setup(pin, GPIO.OUT) GPIO.setup(pin, GPIO.OUT)
@ -45,7 +47,8 @@ class Blinkenlights(ExceptionThread):
logger.debug('Stopping LED on pin %s', self._pin) logger.debug('Stopping LED on pin %s', self._pin)
def setCyclePeriod(self, cyclePeriod): def setCyclePeriod(self, cyclePeriod):
self._sleeptime = cyclePeriod/20/2 with self._lock:
self._sleeptime = cyclePeriod/20/2
def setBlink(self, toggle): def setBlink(self, toggle):
if toggle: if toggle: