import time
import math
from machine import Pin, ADC, PWM
time.sleep(0.1)
BETA = 3950  
R1 = 10000  
V_REF = 3.3


NTC_pin = machine.ADC(28)
NTC_ADC = 0
last_result = 0

timing = 0
pins = 8
numbers = 4
dig_start_pin = 8
digit1 = "11111111"
digit2 = "11111111"
digit3 = "11111111"
digit4 = "11111111"
pins_list = []
dig_list = []
digit_list_hex = [
    "00000011",  # 0
    "10011111",  # 1
    "00100101",  # 2
    "00001101",  # 3
    "10011001",  # 4
    "01001001",  # 5
    "01000001",  # 6
    "00011111",  # 7
    "00000001",  # 8
    "00001001",  # 9
    0x08,  # A
    0x03,  # B
    0x46,  # C
    0x21,  # D
    0x06,  # E
    0x0E,  # F
    0x7F   # Empty
]
def setup():
    global buzzer_pin
    buzzer_pin = PWM(Pin(13))
    buzzer_pin.freq(300)
    global pins
    global pins_list
    global dig_list
    global dig_start_pin
    for pin in range(pins):
        assign = "pin" + str(pin)
        assign = Pin(pin, Pin.OUT)
        assign.value(1)
        pins_list.append(assign)
    for x in range(numbers):
        dig = Pin(dig_start_pin, Pin.OUT)
        dig_list.append(dig)
        dig_start_pin = dig_start_pin + 1
    print(dig_list)
    


def update():
    global digit1
    global digit2
    global digit3
    global digit4
    global result
    global pins_list
    global dig_list
    str_result = str(result)
    if str_result[0] == "-":
        return
    counter = 1
    digit1 = "11111111"
    digit2 = "11111111"
    digit3 = "11111111"
    digit4 = "11111111"
    while counter < 5:
        dig1very = False
        dig2very = False
        dig3very = False
        dig4very = False
        if len(str_result) == 0:
            return
        ans = str_result[0]
        ans_int = int(ans)
        if counter == 1:
            digit1 = digit_list_hex[ans_int]
            dig1very = True
        elif counter == 2:
            digit2 = digit_list_hex[ans_int]
            dig2very = True
        elif counter == 3:
            digit3 = digit_list_hex[ans_int]
            dig3very = True
        else:
            digit4 = digit_list_hex[ans_int]
            dig4very = True
        if len(str_result) > 1:
            if str_result[1] == ".":
                str_result = str_result.replace(".", "")
                if dig1very == True:
                    digit1 = digit1[:-1] + "0"
                elif dig2very == True:
                    digit2 = digit2[:-1] + "0"
                elif dig3very == True:
                    digit3 = digit3[:-1] + "0"
                else:
                    digit4 = digit4[:-1] + "0"
        counter = counter + 1
        str_result = str_result[1:]
  
          
setup()

while True:
    NTC_ADC = NTC_pin.read_u16()
    voltage = (NTC_ADC / 65535) * V_REF
    resistance = R1 / ((V_REF / voltage) - 1)

    kelvin = 1 / (1 / 298.15 + 1 / BETA * math.log(resistance / 10000))
    celsius = kelvin - 273.15
    result = round(celsius, 1)
    if result >= 39:
        buzzer_pin.duty_u16(60000)
    else:
        buzzer_pin.duty_u16(0)
    if result != last_result:
        update()
    last_result = result
    digit_counter = 0
    for dig_worker in dig_list:
        if digit_counter == 0:
            danx = digit1
        elif digit_counter == 1:
            danx = digit2
        elif digit_counter == 2:
            danx = digit3
        else:
            danx = digit4
        dig_worker.value(1)
        counter = 0
        for pin_worker in pins_list:
            state = int(danx[counter])
            pin_worker.value(state)
            counter = counter + 1
        digit_counter = digit_counter + 1
        time.sleep(0.03)
        dig_worker.value(0)
        for pin_worker in pins_list:
            pin_worker.value(1)