from machine import Pin, SPI
from max7219 import Matrix8x8
from time import sleep_ms

# MAX7219 DIN pin to GPIO3
# MAX7219 CS pin to GPIO5
# MAX7219 CLOCK pin to GPIO2

spi = SPI(0, sck=Pin(2), mosi=Pin(3))
cs = Pin(5, Pin.OUT)

display = Matrix8x8(spi, cs, 1)
display.brightness(1)

def show():
    display.show()
    sleep_ms(200)
    display.fill(0)

while True:
    display.rect(3,3,2,2,1) # (x, y, w, h, col)
    show()
    display.rect(2,2,4,4,1)
    show()
    display.rect(1,1,6,6,1)
    show()
    display.rect(0,0,8,8,1)
    show()
    display.rect(1,1,6,6,1)
    show()
    display.rect(2,2,4,4,1)
    show()
    display.rect(3,3,2,2,1)
    show()
    display.rect(3,3,2,2,0)
    show()