print("Water Level Detector")
print("Practical Test")
print("Date: 5/12/2023")
print("Created by: Nafis")

#Import all libraries/modules
import ultrasonic_library
import OLED_library
from machine import Pin, PWM, SoftI2C
from utime import sleep

#Pin declaration
trigger = Pin(12, Pin.IN)
echo = Pin(27, Pin.OUT)
Buzzer_Pin = Pin(4, Pin.OUT)
Led_hijau = Pin(26, Pin.OUT)
Led_kuning = Pin(14, Pin.OUT)
Led_merah = Pin(13, Pin.OUT)
pin_oled = SoftI2C(scl=Pin(22), sda=Pin(21))

#Declare/Create object name for sensors with libraries
sensor_detected = ultrasonic_library.HCSR04(trigger_pin=trigger, echo_pin=echo)
skrin = OLED_library.SSD1306_I2C(width=128, height=64, i2c=pin_oled)

#Main program
while True:
  #ULTRASONIC PART
  print('\n WATER LEVEL DETECTOR \n')
  skrin.fill(0)
  skrin.text("WATER LEVEL",20,20,1)
  skrin.text("DETECTOR",30,40,1)
  skrin.show()
  distance_in_cm = sensor_detected.distance_cm()
  print('Water is detected within :', distance_in_cm, 'cm')
  #distance_in_mm = sensor_detected.distance_mm()
  #print('An object is detected within :', distance_in_mm, 'mm')


  #BUZZER PART
  if distance_in_cm > 200 :
    print("WATER FULL")
    skrin.fill(0)
    skrin.text("WATER FULL",20,30,1)
    skrin.show()
    tone_buzzer = PWM(Buzzer_Pin, freq = 1500 , duty = 50)
    sleep(0.3)
    tone_buzzer = PWM(Buzzer_Pin, freq = 1500 , duty = 0)
    sleep(0.3)
    Led_hijau.on()
    sleep(0.5)
    Led_hijau.off()
    sleep(0.5)

  elif 50 <= distance_in_cm < 200:
    print("WATER LOW")
    skrin.fill(0)
    skrin.text("WATER LOW",25,30,1)
    skrin.show()
    tone_buzzer = PWM(Buzzer_Pin, freq = 1000 , duty = 50)
    sleep(0.05)
    tone_buzzer = PWM(Buzzer_Pin, freq = 1000 , duty = 0)
    sleep(0.05)
    Led_kuning.on()
    sleep(0.2)
    Led_kuning.off()
    sleep(0.2)

  else:
    print('WATER IN DANGEROUS !!!')
    skrin.fill(0)
    skrin.text("WATER",40,20,1)
    skrin.text("IN",50,30,1)
    skrin.text("DANGEROUS !!!",20,40,1)
    skrin.show()
    tone_buzzer = PWM(Buzzer_Pin, freq = 500 , duty = 50)
    Led_merah.on()
    sleep(0.1)
    Led_merah.off()


  sleep(1)