from machine import Pin, I2C
import time
import ssd1306

width = 128
height = 64

i2c = I2C(scl=Pin(22), sda=Pin(21))
oled = ssd1306.SSD1306_I2C(width, height, i2c)

oled.text("Hello... AST!", 0, 0)
oled.text("MicroPython", 0, 15)
oled.show()
time.sleep(2)

w = int(width/2)
h = int(height/2)

while 1:
    for i in range(4):
        oled.fill(0) #fill black
        if i==0:
            oled.fill(1) #fill blue
            oled.text("fill", 0, 5, 0)
        elif i==1:
            oled.fill_rect(0, 20, w, h, 1)
            oled.text("fill rect", 0, 0)
        elif i==2:
            oled.pixel(w, h, 1)
            oled.text("pixel", 0, 0)
        elif i==3:
            oled.scroll(10, 10)
            oled.text("scroll", 0, 0)
        oled.show()
        time.sleep(1)