from machine import Pin, I2C
from ssd1306 import SSD1306_I2C

i2c = I2C(0, sda=Pin(4), scl=Pin(5))

oled = SSD1306_I2C(128, 64, i2c)

oled.fill(0)
oled.text("I2C OK", 0, 0)
oled.show()