from machine import ADC,Pin
from time import sleep

x_axis=ADC(Pin(26))
y_axis=ADC(Pin(27))

led1_up=Pin(18,Pin.OUT)
led2_down=Pin(16,Pin.OUT)
led3_left=Pin(17,Pin.OUT)
led4_right=Pin(19,Pin.OUT)

def read_joystick():
    x=x_axis.read_u16()
    y=y_axis.read_u16()
    return x,y

while True:
    x,y=read_joystick()
    led1_up.value(0)
    led2_down.value(0)
    led3_left.value(0)
    led4_right.value(0)

    if x < 20000:
     led4_right.value(1)
    elif x>50000:
     led3_left.value(1)
    elif y<20000:
     led2_down.value(1)
    elif y>50000:
     led1_up.value(1)
     sleep(0.5)