from machine import Pin
from utime import sleep

# traffic 1
ledRed1 = Pin(21, Pin.OUT)
ledYellow1 = Pin(22, Pin.OUT)
ledGreen1 = Pin(23, Pin.OUT)

# traffic 2
ledRed2 = Pin(5, Pin.OUT)
ledYellow2 = Pin(18, Pin.OUT)
ledGreen2 = Pin(19, Pin.OUT)

# define function for traffic 1
def trafficGo1():
  ledRed1.off()
  ledYellow1.off()
  ledGreen1.on()

def trafficWait1():
  ledRed1.off()
  ledYellow1.on()
  ledGreen1.off()

def trafficStop1():
  ledRed1.on()
  ledYellow1.off()
  ledGreen1.off()

# define function for traffic 2
def trafficGo2():
  ledRed2.off()
  ledYellow2.off()
  ledGreen2.on()

def trafficWait2():
  ledRed2.off()
  ledYellow2.on()
  ledGreen2.off()

def trafficStop2():
  ledRed2.on()
  ledYellow2.off()
  ledGreen2.off()

while True:
  trafficGo1()
  trafficStop2();
  sleep(5)

  trafficWait1()
  trafficStop2()
  sleep(3)

  trafficStop1()
  trafficGo2()
  sleep(5)

  trafficStop1()
  trafficWait2()
  sleep(3)