from machine import Pin
from time import sleep

# Configuração dos pinos
RS = Pin(0, Pin.OUT)
E = Pin(1, Pin.OUT)
D4 = Pin(2, Pin.OUT)
D5 = Pin(3, Pin.OUT)
D6 = Pin(4, Pin.OUT)
D7 = Pin(5, Pin.OUT)

def pulse_enable():
    E.value(0)
    sleep(0.001)
    E.value(1)
    sleep(0.001)
    E.value(0)
    sleep(0.001)

def send_nibble(data):
    D4.value((data >> 0) & 1)
    D5.value((data >> 1) & 1)
    D6.value((data >> 2) & 1)
    D7.value((data >> 3) & 1)
    pulse_enable()

def send_byte(data, is_data):
    RS.value(is_data)
    send_nibble(data >> 4)  # parte alta
    send_nibble(data & 0x0F)  # parte baixa
    sleep(0.001)

def lcd_init():
    sleep(0.02)  # aguarda >15ms após alimentação
    send_nibble(0x03)
    sleep(0.005)
    send_nibble(0x03)
    sleep(0.001)
    send_nibble(0x03)
    send_nibble(0x02)  # modo 4 bits

    send_byte(0x28, 0)  # 2 linhas, 5x8 font
    send_byte(0x0C, 0)  # display ON, cursor OFF
    send_byte(0x06, 0)  # incremento automático
    send_byte(0x01, 0)  # limpa display
    sleep(0.002)

def lcd_write(msg):
    for char in msg:
        send_byte(ord(char), 1)

# Inicializa LCD e escreve mensagem
lcd_init()
lcd_write("Hello World")