from machine import Pin,ADC, I2C
from utime import sleep
from math import log
import lcdi2c as lcd

ntc_sensor = ADC(0)

A = 1.009249522e-03
B = 2.378405444e-04
C = 2.019202697e-07
R_PULLUP = 10000

def read_temperature():
    # Read raw ADC value (12-bit resolution)
    raw_adc = ntc_sensor.read_u16()
    voltage = raw_adc * (3.3 / 65535)  # Convert to voltage
    resistance = (R_PULLUP * voltage) / (3.3 - voltage)  # Calculate resistance
    # Calculate temperature using Steinhart-Hart equation
    steinhart = A + B * (resistance ** -1) + C * (resistance ** -3)
    temperature = 1 / steinhart - 273.15  # Convert to Celsius
    return round(temperature, 2)


#tm = tm1637.TM1637(clk=Pin(0), dio=Pin(1))#
lcd.cmdwrite(0xc0)
lcd.strwrite("BMT4033")
sleep(2)
lcd.cmdwrite(0x01)
lcd.strwrite("SYAFIQA")
sleep(2)
while 1:
    for i in range(100):
        lcd.cmdwrite(0x85)
        temp = read_temperature()
        lcd.clear()
        lcd.putstr(f"Temp: {temp}C")
        sleep(1)
        sleep(0.5)

BETA = 3950
sleep(0.01)
ntc=ADC(Pin(26))

while 1:
    val=ntc.read_u16()
    temp=1 / (log(1 / (65535. / val - 1)) / BETA + 1.0 / 298.15) - 273.15;
    print(temp)
    tm.temperature(int(temp))
    sleep(0.3)