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[be8e4d]: / test / issue_94_111_154.py  Maximize  Restore  History

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import time

import RPi.GPIO as GPIO



LED_PIN = 12



def issue_154():

    # fails with led off at around 400

    count = 0

    pinRef = GPIO.PWM(LED_PIN,50) # create new PWM instance

    while True:

        pinRef.start(10) # update PWM value

        time.sleep(0.05)

        pinRef.stop()

        GPIO.output(LED_PIN,0)

        time.sleep(0.05)

        count = count + 1

        print count



def issue_94(cycles):

    # led flickers.  Bug = LED stays off at around cycle 400

    pwm = GPIO.PWM(LED_PIN, 1)

    for i in xrange(cycles):

        print(i)

        pwm.ChangeFrequency(25)

        pwm.start(50)

        time.sleep(1)

        pwm.stop()



if __name__ == '__main__':

    GPIO.setmode(GPIO.BOARD)

    GPIO.setup(LED_PIN, GPIO.OUT)

    try:

#        issue_94(1000)

        issue_154()

    finally:

        GPIO.cleanup()
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