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

# Initialize SPI communication
spi = SPI(0, baudrate=10000000, polarity=1, phase=0, sck=Pin(18), mosi=Pin(23))

# Define pins for the CS (Chip Select) lines for each display
cs_pins = [Pin(pin, Pin.OUT) for pin in [5, 17, 16, 4]]  # Example pins, adjust as needed

# Create Matrix8x8 instances for each display
displays = [max7219.Matrix8x8(spi, cs) for cs in cs_pins]

# Set brightness for all displays
for display in displays:
    display.brightness(5)

# Define your scrolling messages
scrolling_messages = [
    "HELLO WORLD!",
    "MICROPYTHON ROCKS!",
    "MAX7219 DEMO!",
    "HAVE A NICE DAY!"
]

# Loop through each display and show scrolling messages
for i, message in enumerate(scrolling_messages):
    # Clear all displays
    for display in displays:
        display.fill(0)
        display.show()

    # Calculate message length and columns
    length = len(message)
    columns = length * 8

    # Display the message on each display
    for j, display in enumerate(displays):
        x_offset = j * 8  # Adjust the x offset based on display position
        for x in range(columns, -8, -1):
            display.fill(0)  # Clear the display
            display.text(message, x + x_offset, 0, 1)  # Display text
            display.show()  # Show the display
            time.sleep(0.1)  # Adjust the scrolling speed

# Clear all displays after displaying all messages
for display in displays:
    display.fill(0)
    display.show()