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26

Slika 3.2: Enostaven semafor.

Program ampel01.py krmili semafor:

import RPi.GPIO as GPIO

import time

GPIO.setmode(GPIO.BCM)

rot = 0; gelb = 1; gruen = 2

Ampel=[4,18,23]

GPIO.setup(Ampel[rot], GPIO.OUT, initial=False)

GPIO.setup(Ampel[gelb], GPIO.OUT, initial=False)

GPIO.setup(Ampel[gruen], GPIO.OUT, initial=True)

print ("Ctrl+C zaključi program")

try:

while True:

time.sleep(2)

GPIO.output(Ampel[gruen],False);

GPIO.output(Ampel[gelb],True)

time.sleep(0.6)

GPIO.output(Ampel[gelb],False);

GPIO.output(Ampel[rot],True)

time.sleep(2)

GPIO.output(Ampel[gelb],True)

time.sleep(0.6)

GPIO.output(Ampel[rot],False);

GPIO.output(Ampel[gelb],False)