# Program control matrice 8x8 cu controler
# Max 7219
# Conexiuni pini
# SCK=GP 14 DIN =GP 15 cs=GP 13 SPI 1
 
# Se utilizeaza libraria max7219.py
 
# Import MicroPython libraries of PIN and SPI
from machine import Pin, SPI
import time
import max7219

spi = SPI(1, baudrate=400000, polarity=1, phase=0, sck=Pin(14), mosi=Pin(15))
ss = Pin(13, Pin.OUT)
# Create matrix display instant, which has four MAX7219 devices.
display = max7219.Matrix8x8(spi, ss, 3) # nr celule

display.brightness(5)
mesaj = "Sisteme cu Microprocesoare"
length = len(mesaj)
column = (length * 8)

display.fill(0)
display.show()
time.sleep(1)

while 1:
    for i in range(32, -column, -1):     
        
        display.fill(0)   
        display.text(mesaj ,i,0,1)
        display.show()
        time.sleep(0.1)