46 lines
888 B
Python
46 lines
888 B
Python
#!/usr/bin/env python3
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from gpiozero import TrafficLights, Button, PWMOutputDevice
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from time import sleep
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def main():
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lights = TrafficLights(14, 15, 18)
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lights.off()
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lights.green.on()
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pedestrian_button = Button(23)
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buzzer = PWMOutputDevice(12)
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buzzer.frequency = 444
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buzzer.value = 0.5
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buzzer.off()
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while True:
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pedestrian_button.wait_for_press()
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pedestrian_call(lights, buzzer)
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def pedestrian_call(lights, buzzer):
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buzz(buzzer, 1)
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sleep(3)
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lights.green.off()
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lights.amber.on()
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sleep(4)
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lights.amber.off()
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lights.red.on()
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buzz(buzzer, 2)
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sleep(5)
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buzz(buzzer, 3)
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sleep(3)
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lights.red.off()
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lights.green.on()
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def buzz(buzzer, n=1):
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for i in range(n):
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buzzer.value = 0.5
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sleep(0.1)
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buzzer.off()
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sleep(0.1)
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if __name__ == "__main__":
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main()
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