from machine import Pin, SoftI2C
from i2c_lcd import I2cLcd
from utime import sleep

i2c=SoftI2C(sda=Pin(22),scl=Pin(21))
lcd=I2cLcd(i2c,0x27,2,16)

while True:
    for i in range(0,16,1):
        lcd.putstr(':)')
        sleep(0.1)
        lcd.clear()
        lcd.move_to(i,0)

    for i in range(15,-1,-1):
        lcd.putstr(':)')
        sleep(0.1)
        lcd.clear()
        lcd.move_to(i,1)