# Project objectives: 
#   Print a "Hello world!" text on the LCD screen to test its functionality
#   Learn how to use I2C communication between the LCD and Raspberry Pi Pico
#   Get familiarized with the pico_i2c_lcd and lcd_api modules
#
# Hardware and connections used:
#   LCD GND Pin to Raspberry Pi Pico GND
#   LCD VCC Pin to Raspberry Pi Pico VBUS 
#   (Note: VBUS is only to be used as power for the screen. 
#   It can't be used as power for the entire circuit if there are other components interfaced.)
#   LCD SDA Pin to Raspberry Pi Pico GPIO Pin 0
#   LCD SCL Pin to Raspberry Pi Pico GPIO Pin 1
#
# Programmer: Adrian Josele G. Quional

# modules
from machine import I2C, Pin    # since I2C communication would be used, I2C class is imported
from time import sleep

# very important
# this module needs to be saved in the Raspberry Pi Pico in order for the LCD I2C to be used 
from pico_i2c_lcd import I2cLcd

# creating an I2C object, specifying the data (SDA) and clock (SCL) pins used in the Raspberry Pi Pico
# any SDA and SCL pins in the Raspberry Pi Pico can be used (check documentation for SDA and SCL pins)
i2c = I2C(0, sda=Pin(0), scl=Pin(1), freq=400000)

# getting I2C address
I2C_ADDR = i2c.scan()[0]

# creating an LCD object using the I2C address and specifying number of rows and columns in the LCD
# LCD number of rows = 2, number of columns = 16
lcd = I2cLcd(i2c, I2C_ADDR, 2, 16)
led1 = Pin(2, Pin.OUT)
sensor1 = Pin(16, Pin.IN)
led2 = Pin(3, Pin.OUT)
sensor2 = Pin(17, Pin.IN)
led3 = Pin(4, Pin.OUT)
sensor3 = Pin(18, Pin.IN)
a=0
b=0
c=0
count=0
delay=0
led4 = Pin(9, Pin.OUT)
led5 = Pin(10, Pin.OUT)
led6 = Pin(11, Pin.OUT)
sensor4 = Pin(26, Pin.IN)
sensor5 = Pin(27, Pin.IN)
sensor6 = Pin(28, Pin.IN)
d=0
e=0
f=0
count1=0
delay1=0

BUTTON = Pin(16, Pin.IN)


# continuously print and clear "Hello world!" text in the LCD screen while the board has power
while True:
    # putstr method allows printing of the text in the LCD screen
    # for other methods that can be used, check lcd_api module
    if sensor1.value()==1:
        #led1.value(1)
        a=1
    else:
        #led1.value(0)
        a=0
    
    if sensor2.value() == 1:
        #led2.value(1)
        b=1
    else:
       # led2.value(0)
        b=0

    if sensor3.value() == 1:
        #led3.value(1)
        c=1
    else:
        #led3.value(0)
        c=0

    count=a+b+c
    sleep(1)
    if count >= 3:
        delay = 180
    elif count == 2:
        delay = 120
    elif count == 1:
        delay = 60
    else:
        delay = 60
    
    
    





    if delay==60:
        
        lcd.move_to(10, 1)
        for i in range((delay), (delay/2), -1):
            lcd.move_to(0, 1)
            lcd.putstr("plz wait:")
            lcd.putstr(str(int(i))+" ")
            led4.value(1)
            led3.value(1)
            sleep(0.2)
            led4.value(0)
            led3.value(0)
        
        lcd.move_to(10, 1)
        for i in range((delay/2), -1, -1):
            lcd.move_to(0, 1)
            #lcd.putstr("yellow:")
            lcd.putstr(str(int(i))+" ")
            led5.value(1)
            led3.value(1)
            sleep(0.2)
            led5.value(0)
            led3.value(0)
        
        
        
        
    
    if delay==120:
        
        
        lcd.move_to(10, 1)
        for i in range((delay), (delay/2), -1):
            lcd.move_to(0, 1)
            #lcd.putstr("red:")
            lcd.putstr(str(int(i))+" ")
            led4.value(1)
            led3.value(1)
            sleep(0.2)
            led4.value(0)
            led3.value(0)
        
        lcd.move_to(10, 1)
        for i in range((delay/2), -1, -1):
            lcd.move_to(0, 1)
            #lcd.putstr("yellow:")
            lcd.putstr(str(int(i))+" ")
            led5.value(1)
            led3.value(1)
            sleep(0.2)
            led5.value(0)
            led3.value(0)

    if delay==180:
        lcd.move_to(10, 1)
        for i in range((delay), (delay/2), -1):
            lcd.move_to(0, 1)
            #lcd.putstr("red:")
            lcd.putstr(str(int(i))+" ")
            led4.value(1)
            led3.value(1)
            sleep(0.2)
            led4.value(0)
            led3.value(0)
        
        lcd.move_to(10, 1)
        for i in range((delay/2), -1, -1):
            lcd.move_to(0, 1)
            #lcd.putstr("yellow:")
            lcd.putstr(str(int(i))+" ")
            led5.value(1)
            led3.value(1)
            sleep(0.2)
            led5.value(0)
            led3.value(0)
    

    
    if sensor4.value()==1:
        #led1.value(1)
        d=1
    else:
        #led1.value(0)
        d=0
    
    if sensor5.value() == 1:
        #led2.value(1)
        e=1
    else:
       # led2.value(0)
        e=0

    if sensor6.value() == 1:
        #led3.value(1)
        f=1
    else:
        #led3.value(0)
        f=0

    count1=d+e+f
    sleep(1)
    if count1 >= 3:
        delay1 = 180
    elif count1 == 2:
        delay1 = 120
    elif count1 == 1:
        delay1 = 60
    else:
        delay1 = 60
    
    
    





    if delay1==60:
        
        lcd.move_to(10, 1)
        for i in range((delay1), (delay1/2), -1):
            lcd.move_to(0, 1)
            lcd.putstr("plz wait:")
            lcd.putstr(str(int(i))+" ")
            led1.value(1)
            led6.value(1)
            sleep(0.2)
            led1.value(0)
            led6.value(0)
        
        lcd.move_to(10, 1)
        for i in range((delay1/2), -1, -1):
            lcd.move_to(0, 1)
            #lcd.putstr("yellow:")
            lcd.putstr(str(int(i))+" ")
            led2.value(1)
            led6.value(1)
            sleep(0.2)
            led2.value(0)
            led6.value(0)
        
        
    
    if delay1==120:
        lcd.move_to(10, 1)
        for i in range((delay1), (delay1/2), -1):
            lcd.move_to(0, 1)
            #lcd.putstr("red:")
            lcd.putstr(str(int(i))+" ")
            led1.value(1)
            led6.value(1)
            sleep(0.2)
            led1.value(0)
            led6.value(0)
        
        lcd.move_to(10, 1)
        for i in range((delay1/2), -1, -1):
            lcd.move_to(0, 1)
            #lcd.putstr("yellow:")
            lcd.putstr(str(int(i))+" ")
            led2.value(1)
            led6.value(1)
            sleep(0.2)
            led2.value(0)
            led6.value(0)

    if delay1==180:
        
        lcd.move_to(10, 1)
        for i in range((delay1), (delay1/2), -1):
            lcd.move_to(0, 1)
            #lcd.putstr("red:")
            lcd.putstr(str(int(i))+" ")
            led1.value(1)
            led6.value(1)
            sleep(0.2)
            led1.value(0)
            led6.value(0)
        
        lcd.move_to(10, 1)
        for i in range((delay1/2), -1, -1):
            lcd.move_to(0, 1)
            #lcd.putstr("yellow:")
            lcd.putstr(str(int(i))+" ")
            led2.value(1)
            led6.value(1)
            sleep(0.2)
            led2.value(0)
            led6.value(0)

    delay1=0
    count1=0