import time
from machine import ADC ,Pin
import math

DP = Pin (7, Pin.OUT)
dig_1= Pin (8, Pin.OUT)
dig_2= Pin (9, Pin.OUT)
dig_3= Pin (10, Pin.OUT)
dig_4= Pin (11, Pin.OUT)
LET_A= Pin (0, Pin.OUT)
LET_B= Pin (1, Pin.OUT)
LET_C= Pin (2, Pin.OUT)
LET_D= Pin (3, Pin.OUT)
LET_E= Pin (4, Pin.OUT)
LET_F= Pin (5, Pin.OUT)
LET_G= Pin (6, Pin.OUT)
sensor = ADC(Pin(26))
reading_1 = sensor.read_u16()
button = Pin (16, Pin.OUT)
BUTTON_PRESSED = 0 

displaycodes = [
    0xC0,
    0xF9, #1
    0xA4, #2
    0xB0, #3
    0x99, #4
    0x92, #5
    0x82, #G
    0xF8, #7
    0x8e, #8
    0x90 #9
]


def read_potentiometer():
    analog_value1 = sensor.read_u16() 

def read_ntc() :
    analog_value = sensor.read_u16() 
    BETA = 3950000    
    celsius = 1 / (math.log(1 / (65535 / analog_value - 1)) / BETA + 1.0 / 298.15) - 273.15
    return (analog_value,1)

while True : 
    x = read_ntc()  
    voltage = x * 3.3 / 65535
    print("voltage : {:.1f} V".format(voltage))
    time.sleep(1)