print("Practical Test IOT")
print('Created by Muhairel')


#Import libraries
import sonic_lib, oled_lib
from machine import Pin, SoftI2C, PWM
from utime import sleep
from machine import Pin


#Pin declaration 
trig = Pin(13, Pin.IN)
echo = Pin(12, Pin.OUT)

buzzer = Pin(21, Pin.OUT)

pin_oled = SoftI2C(scl=Pin(15), sda=Pin(2))

green_led = Pin(25, Pin.OUT)
yellow_led = Pin(26, Pin.OUT)
red_led = Pin(27, Pin.OUT)


#Create name for libraries
screen = oled_lib.SSD1306_I2C(width = 128, height = 64, i2c = pin_oled)
jarak = sonic_lib.HCSR04(trigger_pin=trig, echo_pin=echo,)

#Main Program
while True:

  #Ultrasonic program
  distance_in_cm = jarak.distance_cm()
  print('A garbage has been detected within: ', distance_in_cm, 'cm')

  

  #OLED, Buzzer & Led 
  if distance_in_cm > 300:
    for a in range(10):
     Buzzer = PWM(buzzer, freq = 1500, duty = 0)
     
     green_led.on()
     yellow_led.off()
     red_led.off()
     
     screen.fill(1)
     screen.text('NOT FULL', 20, 20, 0)  
     screen.text('YET', 40, 40, 0)
     screen.show()

  elif 100 <= distance_in_cm < 300:
    for a in range(10):
      Buzzer = PWM(buzzer, freq = 1500, duty = 0)
    
      green_led.off()
      yellow_led.on()
      red_led.off()

      screen.fill(1)
      screen.text('HALF THERE', 15, 20, 0)  
      screen.show()

  else:
    for a in range (10):
      green_led.off()
      yellow_led.off()
      red_led.on()

      Buzzer = PWM(buzzer, freq = 1500, duty = 50)
      sleep(0.5)
      Buzzer = PWM(buzzer, freq = 1500, duty = 0)
      sleep(0.5)

      screen.fill(1)
      screen.text('BIN IS FULL,', 25, 20, 0)  
      screen.text('PLS EMPTY', 30, 40, 0)
      screen.show()


  sleep(3)