from machine import Pin, I2C
from lcd_api import LcdApi
from pico_i2c_lcd import I2cLcd
import time

I2C_ADDR     = 0x27 
I2C_NUM_ROWS = 4
I2C_NUM_COLS = 20

i2c = I2C(0, sda=Pin(21), scl=Pin(22), freq=400000) 

lcd = I2cLcd(i2c, I2C_ADDR, I2C_NUM_ROWS, I2C_NUM_COLS)

btn1 = Pin(15, Pin.IN, Pin.PULL_DOWN)
btn2 = Pin(17, Pin.IN, Pin.PULL_DOWN)
def menuprincipal():
  lcd.clear()
  lcd.move_to(0,0)
  lcd.putstr("Menu")
  lcd.move_to(0,1) 
  lcd.putstr("1. Pares ") 
  lcd.move_to(0,2)
  lcd.putstr("2. Impares")
menuprincipal()
while True:
  if btn1.value() == 1:
    lcd.clear()
    lcd.putstr("Seleccionaste")
    lcd.move_to(0,1)
    lcd.putstr("Pares")
    time.sleep(1)
    menuprincipal()

  if btn2.value() == 1:   
    lcd.clear()
    lcd.putstr("Seleccionaste")
    lcd.move_to(0,1) 
    lcd.putstr("Impares")
    time.sleep(1)
    menuprincipal()