print("Hello, ESP32!")
from machine import Pin, I2C, Timer  # Import I2C and Timer from machine
from time import sleep 
from lcd_api import LcdApi
from i2c_lcd import I2cLcd

# Pin setup
pin_LED = Pin(0, Pin.OUT)  # LED output pin
pin_PB = Pin(14, Pin.IN)  # Button input pin with pull-up
slide_pin = Pin(27, Pin.IN, Pin.PULL_UP)  # Slide switch input pin with pull-up
pir_sensor = Pin(26, Pin.IN)  # PIR motion sensor input pin
rgb_red = Pin(25, Pin.OUT)  # RGB LED Red pin
rgb_green = Pin(33, Pin.OUT)  # RGB LED Green pin
rgb_blue = Pin(33, Pin.OUT)  # RGB LED Blue pin
dip_switch = Pin(5, Pin.IN, Pin.PULL_UP)  # DIP switch input pin

# I2C setup for LCD
I2C_ADDR = 0x27  # Default I2C address for 2004 LCD
i2c = I2C(0, sda=Pin(21), scl=Pin(22), freq=400000)
lcd = I2cLcd(i2c, I2C_ADDR, 4, 20)  # 4 rows and 20 columns

# Timer setup
timer = Timer(0)

# Function to display a message based on the slide switch state
def display_message():
    if slide_pin.value() == 0:  # When the slide switch is ON (connected to GND)
        lcd.clear()
        lcd.putstr("HI")
    else:
        lcd.clear()  # Clear the display when the slide switch is OFF

# Timer callback for RGB LED (Blue)
def timer_callback(timer):
    rgb_red.off()
    rgb_green.off()
    rgb_blue.on()

# Interrupt handler for DIP switch
def dip_switch_handler(pin):
    rgb_red.off()
    rgb_blue.off()
    rgb_green.on()

# PIR motion sensor handler
def pir_motion_handler():
    if pir_sensor.value() == 1:  # Motion detected
        rgb_green.off()
        rgb_blue.off()
        rgb_red.on()

# Initialize components
lcd.clear()  # Clear LCD at the start
lcd.putstr("Assalamualaikum")
sleep(2)

# Set up interrupt for DIP switch
dip_switch.irq(trigger=Pin.IRQ_FALLING, handler=dip_switch_handler)

# Start timer for RGB LED (Blue)
timer.init(period=1000, mode=Timer.PERIODIC, callback=timer_callback)

while True:
    pin_LED.off()  # Turn off the LED initially
    val_PB = pin_PB.value()  # Read the push button state
    print(val_PB)

    if val_PB == 0:  # If the button is pressed
        pin_LED.on()  # Turn on the LED

    display_message()  # Update the LCD based on the slide switch state
    pir_motion_handler()  # Check PIR motion sensor
    sleep(0.1)  # Small delay to debounce the switch