import time
import machine
import random

pins=[6,7,8,9,10,11,12,13,14,15]

leds=[]

for pin_number in pins:
    led=machine.Pin(pin_number,machine.Pin.OUT)
    leds.append(led)

pot=machine.ADC(26)

def all_on():
    for led in leds:
        led.value(1)

def all_off():
    for led in leds:
        led.value(0)

###################################

def pattern_alternate():
    for i in range(10):
      leds[i].value (i%2)
    time.sleep(2)

###################################

def pattern_center_out():
    mid=4
    for offset in range(5):
        all_off()
        leds[mid-offset].value (1)
        leds[mid+offset].value (1)
        time.sleep(0.3) 

####################################

def pattern_random ():
    for _ in range(30):
        idx=random.randint(0,5)
        leds[idx].value(random.randint(0,1))
        time.sleep(0.05)
    all_off()

####################################

def pattern_ranner (color_delay=0.05):
  for i in range(10):
    all_off()
    leds[i].value(1)
    time.sleep(color_delay) 
  for i in range(4,-1,-1):
    all_off()
    leds[i].value(1)
    time.sleep(color_delay) 
        
####################################

def pattern_ranner1 (color_delay=0.05):

  for i in range(10):
    all_off()
    leds[i].value(1)
    time.sleep(color_delay) 
  for i in range(4,1,1):
    all_off()
    leds[i].value(1)
    time.sleep(color_delay) 

####################################

def read_speed():
    value=pot.read_u16()
    level=int(value/65535*10)
    return level

####################################

while True:
    speed=read_speed()
    all_off()

    for i in range(speed):
        leds[i].value(1)

    if speed==0:
        print("The car is parked")
        pattern_alternate()

    elif speed<=4:
        print("Safe speed ",speed)
        pattern_center_out()

    elif speed<=7:
        print("Medium speed ",speed)
        pattern_random()

    elif speed<=9:
        print("warning! High speed ",speed)
        pattern_ranner()

    elif speed>=10:
        print("Danger ! Exceeding the maximum limit ")
        pattern_ranner1()

        for _ in range(5):
            all_on()
            time.sleep(0.1)
            all_off()
            time.sleep(0.1)

    time.sleep(0.2)