"""
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ Raspberry Pi Pico I2C LCD Display (MicroPython)          ┃
┃                                                          ┃
┃ An example of using an I2C LCD display with the          ┃
┃ Raspberry Pi Pico.                                       ┃
┃                                                          ┃
┃ Copyright (c) 2023 Anderson Costa                        ┃
┃ GitHub: github.com/arcostasi                             ┃
┃ License: MIT                                             ┃
┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
"""

from machine import I2C, Pin
from time import sleep
from pico_i2c_lcd import I2cLcd

btn_green = Pin(8, Pin.IN, Pin.PULL_UP)
btn_blue = Pin(9, Pin.IN, Pin.PULL_UP)
btn_yellow = Pin(10, Pin.IN, Pin.PULL_UP)
btn_red = Pin(15, Pin.IN, Pin.PULL_UP)

i2c_bus = I2C(0, sda=Pin(0), scl=Pin(1), freq=40000)
i2c_address = i2c_bus.scan()[0]
lcd_display = I2cLcd(i2c_bus, i2c_address, 2, 16)
 
def lcd_display_list(strings):
    if strings:
        for line in strings:
            lcd_display.clear()
            lcd_display.move_to(0, 0)
            lcd_display.putstr(line)
            sleep(1)

colours = []

while True:
    if btn_green.value() == 0:
        print("green pressed")
        colours.append("green")
    elif btn_blue.value() == 0:
        print("blue pressed")
        colours.append("blue")
    elif btn_yellow.value() == 0:
        print("yellow pressed")
        colours.append("yellow")
    elif btn_red.value() == 0:
        print("red pressed")
        break
    
    sleep(0.3)

print("colours pressed were: \n")
print(colours)

upper_colours = []

for colour in colours:
    upper_colours.append(colour.upper())

all_colours = ""
for colour in colours:
    all_colours = all_colours + colour.strip()

print(all_colours)
lcd_display_list(upper_colours)
sleep(0.5)
lcd_display.move_to(0, 1)
lcd_display.putstr(all_colours)