35 lines
854 B
Python
35 lines
854 B
Python
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#!/usr/bin/python
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from time import sleep
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import RPi.GPIO as GPIO
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try:
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GPIO.setmode(GPIO.BCM)
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GPIO.setup(4, GPIO.OUT)
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GPIO.setup(14, GPIO.IN, pull_up_down=GPIO.PUD_UP)
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speeds = [1000, 500, 250, 150, 100, 50]
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currentSpeedIndex = 0
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msPassed = 0
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ledOn = False
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cycleMs = 50
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while True:
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if msPassed >= speeds[currentSpeedIndex]:
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ledOn = ~ledOn
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msPassed = 0
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GPIO.output(4, ledOn)
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buttonPressed = GPIO.input(14) == 0
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if buttonPressed == True:
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print 'Button pressed'
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currentSpeedIndex = (currentSpeedIndex + 1) % len(speeds)
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print 'New speed: ' + str(speeds[currentSpeedIndex]) + 'ms'
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sleep(cycleMs / 1000.0)
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msPassed += cycleMs
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except KeyboardInterrupt:
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GPIO.output(4, False)
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finally:
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GPIO.cleanup()
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