import machine
from machine import Pin, PWM
import time

Trigger = Pin(23, Pin.OUT)
Echo = Pin(34, Pin.IN)

# Initialize buzzer and LED pins
buzzer_pin = Pin(26, Pin.OUT)
led_pin = machine.Pin(27)
led_pwm = PWM(led_pin)

while True:
    Trigger.value(0)
    time.sleep_us(2)
    Trigger.value(1)
    time.sleep_us(10)
    Trigger.value(0)

    totaltime = machine.time_pulse_us(Echo, 1)

    distance = (totaltime * 0.034) / 2
    print("Distance in cm:", distance)

    # Control buzzer intensity based on distance
    if distance <= 10:
        buzzer_pin.value(1)  # Turn on the buzzer
        buzzer_pwm = PWM(buzzer_pin)
        buzzer_pwm.freq(1000)
        buzzer_pwm.duty(1023)  # Max intensity
    elif distance <= 50:
        buzzer_pin.value(1)  # Turn on the buzzer
        buzzer_pwm = PWM(buzzer_pin)
        buzzer_pwm.freq(1000)
        buzzer_pwm.duty(512)  # Medium intensity
    elif distance <= 100:
        buzzer_pin.value(1)  # Turn on the buzzer
        buzzer_pwm = PWM(buzzer_pin)
        buzzer_pwm.freq(1000)
        buzzer_pwm.duty(256)  # Low intensity
    else:
        buzzer_pin.value(0)  # Turn off the buzzer

    # Control LED intensity based on distance
    if distance <= 10:
        led_pwm.duty(1023)  # Max intensity
    elif distance <= 50:
        led_pwm.duty(512)  # Medium intensity
    elif distance <= 100:
        led_pwm.duty(256)  # Low intensity
    else:
        led_pwm.duty(0)  # Turn off the LED

    time.sleep(2)