from machine import ADC, Pin
from time import sleep
from math import log



# ESP32 Pin assignment for the Thermistor
ntc_pin = ADC(Pin(35))
ntc_pin.atten(ADC.ATTN_0DB)

# Beta Coefficient of the Thermistor
beta = 3950.0   

# Temperature threshold in Celsius
warning_temp = 30.0

# Measure the temperature every second in an endless loop 
while True:
    # Begin new measurement:
     
    # Read thermistor and calculate temperature in Celsius
    ntc_data = ntc_pin.read()
   
    temp = 1.0 / (log(1.0 / (4095.0 / ntc_data - 1)) / beta + 1.0 / 298.15) - 273.15
    print('temp     = ' + str(temp))
    print('---------------------------')

    # Check if temperature exceeds the threshold
    if temp > warning_temp :
        # Print a message if temperature exceeds threshold
        
        print("Tempreture is High!")
    else:
        
        print("Tempreture is Normal!")

    # Wait 1 second before new measurement
    sleep(1)