from machine import Pin
import machine
import utime
import math

# Sensor Connections
thermistor_pin = Pin(26)
adc = machine.ADC(thermistor_pin)
led_k = Pin(5, machine.Pin.OUT)
led_y = Pin (28 ,Pin.OUT)
led_s = Pin(11,Pin.OUT)

def pulseE():
    e.value(1)
    utime.sleep_us(40)
    e.value(0)
    utime.sleep_us(40)

def read_temperature():
    beta = 3950
    series_resistor = 10000
    adc_value = adc.read_u16()
    resistance = series_resistor / (65535 / adc_value - 1)

    # Using the Steinhart-Hart equation to calculate the temperature
    steinhart = resistance / 10000  # (R/Ro)
    steinhart = math.log(steinhart)  # ln(R/Ro)
    steinhart /= beta  # 1/B * ln(R/Ro)
    steinhart += 1.0 / (25 + 273.15)  # + (1/To)
    steinhart = 1.0 / steinhart  # Invert
    steinhart -= 273.15  # Convert to Celsius
    return steinhart

# Main loop

while True:
    temperature = read_temperature()
    print("Derece :", temperature, "°C")

    if temperature > 45:
        led_k.on()
        led_y.off()
        led_s.off()
        #send_string_to_lcd("Temperature>45C")
        print("Tehlike var!")
        utime.sleep(2)
    if temperature < 30:
        led_k.off()
        led_y.on()
        led_s.off()
        print("Güvenli")
        utime.sleep(2)
    if 30>temperature<45:
        led_k.off()
        led_y.off()
        led_s.on()
        print("Tehlike olabilir")
        utime.sleep(2)