# ------Need help with this project-----
# import utime
# from machine import Pin, I2C
# from lcd_api import LcdApi
# from pico_i2c_lcd import I2cLcd
from machine import Pin
from utime import sleep

# # Define pins for IR sensors
# ir_sensor_pins = [Pin(2, Pin.IN), Pin(3, Pin.IN), Pin(4, Pin.IN)]

# # Define pin for ultrasonic sensor
# ultrasonic_trigger = Pin(28, Pin.OUT)
# ultrasonic_echo = Pin(27, Pin.IN)

# Define pins for LEDs
red_led = Pin(19, Pin.OUT)
orange_led = Pin(20, Pin.OUT)
green_led = Pin(21, Pin.OUT)

# # Define pin for servo motor
# servo_pin = Pin(22)

# # Initialize LCD display
# i2c = I2C(0, scl=Pin(17), sda=Pin(16), freq=400000)
# lcd = I2cLcd(i2c, 0x27, 2, 16)

# # Function to check distance using ultrasonic sensor
# def check_distance():
#     ultrasonic_trigger.low()
#     utime.sleep_us(2)
#     ultrasonic_trigger.high()
#     utime.sleep_us(10)
#     ultrasonic_trigger.low()

#     pulse_time = machine.time_pulse_us(ultrasonic_echo, 1)
#     distance = pulse_time / 58.0

#     return distance

# # Function to check available parking slots using IR sensors
# def check_parking():
#     available_slots = 0
#     for pin in ir_sensor_pins:
#         if pin.value() == 0:  # IR sensor detects car
#             available_slots -= 1
#     return available_slots

# # Function to control servo motor for gate opening/closing
# def control_gate(open):
#     duty = 69 if open else 31  # Duty cycle for servo
#     servo = machine.PWM(servo_pin, freq=50)
#     servo.duty_u16(duty * 655)

# # Main loop
# while True:
#     available_slots = check_parking()
#     distance = check_distance()

#     # Display available parking slots on LCD
#     lcd.move_to(0, 0)
#     lcd.putstr("Slots: {}".format(available_slots))

#     # Control LEDs based on available slots
#     if available_slots <= 0:
#         red_led.on()
#         orange_led.off()
#         green_led.off()
#     elif available_slots == 1:
#         red_led.off()
#         orange_led.on()
#         green_led.off()
#     else:
#         red_led.off()
#         orange_led.off()
#         green_led.on()

#     # Control gate based on distance
#     if distance < 10:  # Adjust this threshold based on your setup
#         control_gate(open=True)
#     else:
#         control_gate(open=False)

#     utime.sleep(1)  # Adjust sleep time based on your requirements

while True:
    red_led.on()
    orange_led.off()
    green_led.off()
    sleep(2)
    red_led.off()
    orange_led.off()
    green_led.off()
    sleep(1)
    red_led.off()
    orange_led.on()
    green_led.off()
    sleep(2)
    red_led.off()
    orange_led.off()
    green_led.off()
    sleep(1)
    red_led.off()
    orange_led.off()
    green_led.on()
    sleep(2)
    red_led.off()
    orange_led.off()
    green_led.off()
    sleep(1)