# Importing required modules and lib.
import time
from machine import Pin

# Define the pins for the RGB LED, onboard led, two channel relay module.
led = machine.Pin(25, machine.Pin.OUT)
red_pin = machine.Pin(2, Pin.OUT)
green_pin = machine.Pin(3, Pin.OUT)
blue_pin = machine.Pin(4, Pin.OUT)
relay01 = machine.Pin(0, Pin.OUT)
relay02 = machine.Pin(1, Pin.OUT)
process_running = True
sensor_temp = machine.ADC(4)
conversion_factor = 3.3 / (65535)

# Define a function to set the RGB values
def set_rgb(r, g, b):
    red_pin.value(r)
    green_pin.value(g)
    blue_pin.value(b)

while process_running:
#     system start
    led.toggle()
    time.sleep(4)
    reading = sensor_temp.read_u16() * conversion_factor 
    temperature = 27 - (reading - 0.706)/0.001721
    print(temperature)
    time.sleep(2)
    # Turn on the red LED for scan time/detection
    relay02.value(0)
    relay01.value(0)
    set_rgb(1, 0, 0)
    time.sleep(8)
    # Turn on the green LED for item "G".
    set_rgb(0, 1, 0)
    time.sleep(1)
    relay02.value(0)
    relay01.value(1)
    time.sleep(8)
    relay01.value(0)
    time.sleep(2)
    # Turn on the blue LED for item "B".
    set_rgb(0, 0, 1)
    relay01.value(0)
    time.sleep(2)
    relay02.value(1)
    time.sleep(8)
    relay02.value(0)
    time.sleep(2)
    # Turn on the white LED (red + green + blue) for operation done.
    set_rgb(1, 1, 1)
    time.sleep(8)
    if temperature >= 30:
        set_rgb(1, 0, 1)
        print(temperature)
    relay02.value(0)
    relay01.value(0)
    led.low()