from machine import Pin, SPI
import time
import random
import ubinascii
import onewire
import ds18x20
import ILI9341
from machine import ADC

desired_temperature = 0.0

relay = Pin(16, Pin.OUT)
led_heating = Pin(15, Pin.OUT)
led_cooling = Pin(14, Pin.OUT)
potentiometer = ADC(Pin(26))
pin = Pin(21)

data_pin = Pin(21) 
ow = onewire.OneWire(data_pin)
roms = ow.scan()

ds = ds18x20.DS18X20(ow)
print('sensor DS18B20 exist :', roms)

spi = SPI(1, baudrate=10000000, polarity=0, phase=0)
cs = Pin(28, Pin.OUT)
dc = Pin(22, Pin.OUT)
reset = Pin(27, Pin.OUT)
display = ILI9341.ILI9341(spi, cs, dc, reset)
display.init()


def simulate_temperature():
  return random.uniform(18.0, 30.0)


def adjust_temperature():
  global desired_temperature
  pot_value = potentiometer.read_u16()
  desired_temperature = 18 + (pot_value / 65535) * (30 - 18)
  print(f"Desired temperature: {desired_temperature:.2f}°C")


def control(temperature):
  try:
    display.fill(ILI9341.BLACK)
    if temperature < desired_temperature:
      display.text("Heating", 10, 10, ILI9341.RED)
      print(f"Temperature {temperature:.2f}°C: Heating ")
      led_heating.on()
      led_cooling.off()
      relay.on()
    elif temperature > desired_temperature:
      display.text("Cooling", 10, 10, ILI9341.BLUE)
      print(f"Temperature {temperature:.2f}°C: Cooling")
      led_cooling.on()
      led_heating.off()
      relay.off()
    else:
      display.text("Stable", 10, 10, ILI9341.GREEN)
      print(f"Temperature {temperature:.2f}°C: Stable")
      led_heating.off()
      led_cooling.off()
      relay.off()
  except Exception as e:
    print(f"Erreur dans control(): {e}")


def display_temperature(temperature):
  try:
    display.fill(ILI9341.BLACK)
    display.text(f"T: {temperature:.2f}°C", 10, 40, ILI9341.WHITE)
  except Exception as e:
    print(f"Erreur dans display_temperature: {e}")


temperature = 0.0

while True:
  try:
    ds.convert_temp()  # Start temperature conversion
    time.sleep_ms(750)  # Wait for conversion to complete

    for rom in roms:
      temperature = ds.read_temp(rom)
      print('Temperature:', temperature, '°C')

    adjust_temperature()
    display_temperature(temperature)
    control(temperature)
    time.sleep(2)

  except Exception as e:
    print(f"An error occurred: {e}")