print("Making ultrasonic working")
print("By: mnafan")
print("Date: 22/4/2024")

#Import libraries
import ultrasonic
from machine import Pin, PWM
from utime import sleep


#Pin declaration
TRIG = Pin(12)
ECHO = Pin(14)
buzzer = PWM(Pin(18,Pin.OUT))


#Parameter declaration


#Create an object name --> name = library_name.class_name(...)
sensor_parking = ultrasonic.HCSR04(trigger_pin=TRIG, echo_pin=ECHO, echo_timeout_us=500*2*30)


#Main program
while True:
    distance_mm = sensor_parking.distance_mm()
    distance_cm = sensor_parking.distance_cm()
    buzzer.init(freq=1 ,duty=0)

    print("\t\tBaki jarak dari dinding adalah", distance_cm, "cm")
    print("\t\tBaki jarak dari dinding adalah", distance_mm, "mm")

    if distance_cm >= 300:
        buzzer.init(freq=1 ,duty=0)

    elif 200 < distance_cm < 300:
        for i in range (3):
            buzzer.init(freq=500 ,duty=50)
            sleep(1)
            buzzer.init(freq=500 ,duty=50)
            sleep(1)
    
    else:
        buzzer.init(freq=5000 ,duty=500)
        sleep(10)


sleep(1)