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

def fun_up(up):
    global count,ini_b1
    actual = utime.ticks_ms()
    if utime.ticks_diff(actual,ini_b1) > 250:
        count += 1
        if count > 1000:
            count = 0
        lcd.move_to(6,1)
        aux = "{:04d}".format(count)
        lcd.putstr(aux)
    ini_b1 = actual

def fun_down(down):
    global count,ini_b2
    actual = utime.ticks_ms()
    if utime.ticks_diff(actual,ini_b2) > 250:
        count -= 1
        if count < 0:
            count = 1000
        lcd.move_to(6,1)
        aux = "{:04d}".format(count)
        lcd.putstr(aux)
    ini_b2 = actual
    

#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))

up.irq(trigger = Pin.IRQ_FALLING,handler = fun_up)
down.irq(trigger = Pin.IRQ_FALLING,handler = fun_down)
count = 0

ini_b1 = utime.ticks_ms()
ini_b2 = utime.ticks_ms()
while True:
    pass