print("This program is to make ultrasonic working!")
print("By: Qusyairie")
print("Date:22/4/2024")

#import library
import ultrasonic_lib #kena sama
from machine import Pin, PWM
from utime import sleep

#pin declaration
TRIG = Pin(12)
ECHO = Pin(13)
Buzzer = PWM(Pin(14, Pin.OUT))


#parameter declaration



#create an OBJECT name for module with library #OBJECT NAME --> library name.class name()
sonic = ultrasonic_lib.HCSR04(trigger_pin=TRIG, echo_pin=ECHO) #kena sama


#main program 
while True:
  jarak_dalam_cm = sonic.distance_cm()
  jarak_dalam_mm = sonic.distance_mm()

  print("---------------------------------------------------------------")
  print("Distance from an object is", jarak_dalam_cm, "cm")
  print("Distance from an object is", jarak_dalam_mm, "mm")
  print("\n")

    if jarak_dalam_cm > 200:
      for i in range(3):
        Buzzer_pin.init(freq=500 , duty=550)  #Initialize
        sleep(0.5) 
        Buzzer_pin.init(freq=550 , duty=0)  #Initialize
        sleep(0.5) 

        print("---------------------------------------------------------------")
        print("Distance from an object is", jarak_dalam_cm, "cm")
        print("Distance from an object is", jarak_dalam_mm, "mm")
        print("\n")

    elif 50 <= jarak_dalam_cm <=200:
      for i in range(5):
        Buzzer_pin.init(freq=1500 , duty=50)  #Initialize
        sleep(0.5) 
        Buzzer_pin.init(freq=1500 , duty=0)  #Initialize
        sleep(0.5) 

        print("---------------------------------------------------------------")
        print("Distance from an object is", jarak_dalam_cm, "cm")
        print("Distance from an object is", jarak_dalam_mm, "mm")
        print("\n")

    else:
      for i in range(8):
        Buzzer_pin.init(freq=2000 , duty=50)  #Initialize
        sleep(0.5) 
        Buzzer_pin.init(freq=2000 , duty=0)  #Initialize
        sleep(0.5) 

        print("---------------------------------------------------------------")
        print("Distance from an object is", jarak_dalam_cm, "cm")
        print("Distance from an object is", jarak_dalam_mm, "mm")
        print("\n")