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raspberry pi trafic light

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raspberry pi trafic light with basic menu

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  1. #! /usr/bin/python
  2.  
  3. import time
  4. import RPi.GPIO as GPIO
  5.  
  6. # North set of traffic light
  7. # Define LED colour and their GPIO pin
  8. RED_NORTH = 17
  9. YEL_NORTH = 21
  10. GRN_NORTH = 22
  11.  
  12. # East set of traffic light
  13. RED_EAST = 25
  14. YEL_EAST = 8
  15. GRN_EAST = 7
  16.  
  17. GPIO.setmode(GPIO.BCM)
  18.  
  19. ans=True
  20.  
  21. while ans:
  22.     print("""
  23.     1.Run Lights
  24.     2.clear GPIO
  25.     3.say hi
  26.     4.Exit/Quit
  27.     """)
  28.     ans=raw_input("What would you like to do? ")
  29.     if ans=="1":
  30.       print("\nLights Running")
  31.       GPIO.setwarnings(False)
  32.       GPIO.setup(RED_NORTH, GPIO.OUT)
  33.       GPIO.setup(YEL_NORTH, GPIO.OUT)
  34.       GPIO.setup(GRN_NORTH, GPIO.OUT)
  35.       GPIO.setup(RED_EAST, GPIO.OUT)
  36.       GPIO.setup(YEL_EAST, GPIO.OUT)
  37.       GPIO.setup(GRN_EAST, GPIO.OUT)
  38.       delay = 1
  39.       GPIO.output(RED_NORTH, True)    #ALL red
  40.       GPIO.output(RED_EAST, True)
  41.       time.sleep (delay)
  42.       time.sleep (delay)
  43.  
  44.       GPIO.output(YEL_EAST, True)         
  45.       time.sleep (delay)
  46.       GPIO.output(YEL_EAST, False)
  47.       GPIO.output(RED_EAST, False)
  48.  
  49.       GPIO.output(GRN_EAST, True)     # East green
  50.       time.sleep (delay)
  51.       time.sleep (delay)
  52.       GPIO.output(GRN_EAST, False)
  53.  
  54.       GPIO.output(YEL_EAST, True)     
  55.       time.sleep (delay)
  56.       GPIO.output(YEL_EAST, False)
  57.  
  58.       GPIO.output(RED_EAST, True)     # All red
  59.       time.sleep (delay)  
  60.  
  61.       GPIO.output(YEL_NORTH, True)    
  62.       time.sleep (delay)      
  63.       GPIO.output(YEL_NORTH, False)   
  64.       GPIO.output(RED_NORTH, False)
  65.  
  66.       GPIO.output(GRN_NORTH, True)    # North green
  67.       time.sleep (delay)
  68.       time.sleep (delay)
  69.       GPIO.output(GRN_NORTH, False)
  70.  
  71.       GPIO.output(YEL_NORTH, True)    
  72.       time.sleep (delay)      
  73.       GPIO.output(YEL_NORTH, False)
  74.       GPIO.cleanup()
  75.  
  76.     elif ans=="2":
  77.       print("\n GPIO Cleard")
  78.       GPIO.cleanup()
  79.     elif ans=="3":
  80.       print("\n hi")
  81.     elif ans=="4":
  82.       print("\n Goodbye")
  83.       ans = None
  84.     else:
  85.        print("\n Not Valid Choice Try again")

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