import machine
import random
from machine import Pin, Timer
import time
 
#print(machine.freq()/1000000)
#for default led

##### Basic LED on and off

# led=Pin(26,Pin.OUT)

# for i in range(20):
#     led.on()
#     time.sleep(3)
#     led.off()
#     time.sleep(2)
 
 
 

# def blink_led(timer):
#     led.on()
#     time.sleep(0.5)
#     led.off()
#     time.sleep(0.5)
 
# timer=Timer()
# timer.init(freq=2, mode=Timer.PERIODIC, callback=blink_led)
# time.sleep(20)
# timer.deinit()

 
#For red led
 

# led=Pin(1,Pin.OUT)
 
# def blink_led(timer):
#     led.on()
#     time.sleep(0.5)
#     led.off()
#     time.sleep(0.5)
 
# timer=Timer()
# timer.init(freq=2, mode=Timer.PERIODIC, callback=blink_led)
# time.sleep(20)
# timer.deinit()

 
#traffic light question

# led_red=Pin(1,Pin.OUT)
# led_yellow=Pin(2,Pin.OUT)
# led_green=Pin(4,Pin.OUT)
 
 
 
# while(1):
#     num = random.random()
#     print(num)
#     if num>0.75:
#         led_green.on()
#         time.sleep(1)
#         led_green.off()
#     if num<0.5:
#         led_red.on()
#         time.sleep(1)
#         led_red.off()
#     else:
#         led_yellow.on()
#         time.sleep(1)
#         led_yellow.off()
 
#     time.sleep(1)
 
#binary number question
 
# led_red=Pin(1,Pin.OUT)
# led_yellow=Pin(2,Pin.OUT)
 
# num=25
 
# while num > 0: 
#     remainder = num % 2 
#     #binary = str(remainder) + binary 
#     print(remainder)
#     if remainder==1:
#         led_red.on()
#         time.sleep(1)
#         led_red.off()
#     else:
#         led_yellow.on()
#         time.sleep(1)
#         led_yellow.off()
 
#     num = num // 2