print("Hello, ESP32!")
print("Hello, this program is about UltraSonic Sensor!, Let's Begin")
print("Date : 27/11/2023")
print("BY : MAMN ")


#import all necessary libraries 
import library_ultrasonic
from machine import Pin
from utime import sleep

#declare pin
TRIG = Pin(34, Pin.IN)
ECHO = Pin(26, Pin.OUT)

#create the object name for sensor with library  =>  libraryname.classname()
Sensor_Distance = library_ultrasonic.HCSR04(trigger_pin=TRIG, echo_pin=ECHO, echo_timeout_us=500*2*30)


#Main Program 
while True:
    print('\n-----JOM CHECK INCOMING DISTANCE-----\n')

    distance_in_mm = Sensor_Distance.distance_mm()
    print('An incoming object is at : ', distance_in_mm, 'mm')

    distance_in_cm = Sensor_Distance.distance_cm()
    print('An incoming object is at : ', distance_in_cm, 'cm')

    sleep(2)             #in every 2 seconds, ultrasonic will sense new incoming distance