import time
from machine import SPI, Pin
import max7219

# SPI0 Configuration
spi = SPI(0, baudrate=1000000, polarity=0, phase=0, sck=Pin(18), mosi=Pin(19))
cs = Pin(15, Pin.OUT)

# Initialize the MAX7219 matrix display
display = max7219.Matrix8x8(spi, cs)

# Set brightness
display.brightness(8)

# Clear the display
display.fill(0)
display.show()

# Define a set of symbols as 8x8 patterns
symbols = [
    # Smiley face
    [0b00111100,
     0b01000010,
     0b10100101,
     0b10000001,
     0b10100101,
     0b10011001,
     0b01000010,
     0b00111100],

    # Heart
    [0b00000000,
     0b01100110,
     0b11111111,
     0b11111111,
     0b01111110,
     0b00111100,
     0b00011000,
     0b00000000],

    # Circle
    [0b00111100,
     0b01111110,
     0b11111111,
     0b11100111,
     0b11100111,
     0b11111111,
     0b01111110,
     0b00111100],

    # X mark
    [0b10000001,
     0b01000010,
     0b00100100,
     0b00011000,
     0b00011000,
     0b00100100,
     0b01000010,
     0b10000001],

    # Plus Sign
    [0b00011000,
     0b00011000,
     0b00011000,
     0b11111111,
     0b11111111,
     0b00011000,
     0b00011000,
     0b00011000],
]

# Function to display a symbol on the 8x8 matrix
def display_symbol(symbol):
    display.fill(0)  # Clear the display before drawing a new symbol
    for y, row in enumerate(symbol):
        for x in range(8):  # Loop through each bit in the row (8 bits per row)
            if row & (1 << (7 - x)):  # Check if the bit is 1
                display.pixel(x, y, 1)  # Turn on the pixel at (x, y)
    display.show()

# Continuously display all symbols in a loop
while True:
    for symbol in symbols:  # Iterate through all defined symbols
        display_symbol(symbol)  # Display the current symbol
        time.sleep(1)  # Wait for 1 second before showing the next symbol