# 8*8 LED矩正 動畫程式
# coding by 30409高俊霖

from machine import Pin, SPI
import time
# 影格設定
Num =4  #幾個影格
speed =9 # 1~9
# 每一個影格 一行
# 可使用 LED to 16進位 工具
# https://xantorohara.github.io/led-matrix-editor/
sprite = ( 
    (0xFF,0x81,0xA5,0x81,0xA5,0x99,0x81,0xFF),
    (0xFF,0x81,0xA5,0x81,0x81,0xBD,0x81,0xFF),
    (0xFF,0x81,0xA5,0x81,0x99,0xA5,0x81,0xFF),
    (0xFF,0x81,0xA5,0x81,0x81,0xBD,0x81,0xFF),
)

# 腳位設定
DECODEMODE = const(9)
INTENSITY = const(10)
SCANLIMIT = const(11)
SHUTDOWN = const(12)
DISPLAYTEST = const(15)



cs = Pin(5, Pin.OUT)
spi = SPI(1, 
    baudrate=10000000, 
    polarity=1, 
    phase=0, 
    sck=Pin(14, Pin.OUT), # clk
    mosi=Pin(13, Pin.OUT)
)

def max7219(reg, data):
    cs.value(0)
    spi.write(bytes([reg, data]))
    cs.value(1)

def init():
    for reg, data in (
        (DISPLAYTEST, 0),
        (SCANLIMIT, 7),
        (INTENSITY, 1),
        (DECODEMODE, 0),
        (SHUTDOWN, 1)
    ):
        max7219(reg, data)

def clear():
    for i in range(8):
        max7219(i + 1, 0)

def show():
    for i in range(Num):
        for j in range(8):
            max7219(j+1, sprite[i][j])
        time.sleep(1/speed) # 等待 n秒

try:
    init()
    while True: # 無窮迴圈
        show()  
except:
    clear()