import utime

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

I2C_ADDR     = 0x27
I2C_NUM_ROWS = 2
I2C_NUM_COLS = 16

#Test function for verifying basic functionality
print("Contador de 0 a 1000!")
i2c = I2C(0, sda=machine.Pin(0), scl=machine.Pin(1), freq=400000)
lcd = I2cLcd(i2c, I2C_ADDR, I2C_NUM_ROWS, I2C_NUM_COLS)    
lcd.putstr("Contador de 0 a 1000!")
utime.sleep(2)
lcd.clear()
lcd.putstr("    Eventos:          0000")

up = Pin(14, Pin.IN, Pin.PULL_UP)
down = Pin(15, Pin.IN, Pin.PULL_UP)

ini_bu = utime.ticks_ms()
ini_bd = utime.ticks_ms()
count = 0

def fun_up(up):
    global count, ini_bu
    actual = utime.ticks_ms()
    if utime.ticks_diff(actual, ini_bu) > 250:

        count = count + 1
        if count > 1000:
            count = 0;
        lcd.move_to(6, 1)
        aux = "{:04d}".format(count)
        lcd.putstr(aux)


def fun_down(down):
    global count, ini_bd
    actual = utime.ticks_ms()
    if utime.ticks_diff(actual, ini_bu) > 250:

        count = count - 1
        if count < 0:
            count = 1000;
        lcd.move_to(6, 1)
        aux = "{:04d}".format(count)
        lcd.putstr(aux)

up.irq(trigger = Pin.IRQ_FALLING, handler = fun_up)
down.irq(trigger = Pin.IRQ_FALLING, handler = fun_down)

while True:
    pass