7 segemend LED matrix

max7219.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2017-18 Richard Hull and contributors
# See LICENSE.rst for details.

import re
import time
import argparse

from luma.led_matrix.device import max7219
from luma.core.interface.serial import spi, noop
from luma.core.render import canvas
from luma.core.virtual import viewport
from luma.core.legacy import text, show_message
from luma.core.legacy.font import proportional, CP437_FONT, TINY_FONT, SINCLAIR_FONT, LCD_FONT


def demo(n, block_orientation, rotate):
    # create matrix device
    serial = spi(port=0, device=0, gpio=noop())
    # kalau ade 1 x 4 led matrix, dalam func demo(), replace with this line
    device = max7219(serial, block_orientation=-90, rotate=rotate or 0, width=32, height=8)
    print("Created device")

    # start demo
    msg = "LED Matrix Demo"
    print(msg)
    show_message(device, msg, fill="white", font=proportional(CP437_FONT))
    time.sleep(1)


    msg = "4 - coach train to gombak will arrive within 4 minutes"
    print(msg)
    show_message(device, msg, fill="white", font=proportional(CP437_FONT))
    time.sleep(1)

    msg = "Selamat Datang ke Kedai Dobi Pak Ali"
    print(msg)
    show_message(device, msg, fill="white", font=proportional(CP437_FONT))
    time.sleep(1)


    time.sleep(1)
    for x in range(256):
        with canvas(device) as draw:
            text(draw, (0, 0), chr(x), fill="white")
            time.sleep(0.1)


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='matrix_demo arguments',
        formatter_class=argparse.ArgumentDefaultsHelpFormatter)

    parser.add_argument('--cascaded', '-n', type=int, default=1, help='Number of cascaded MAX7219 LED matrices')
    parser.add_argument('--block-orientation', type=int, default=0, choices=[0, 90, -90], help='Corrects block orientation when wired vertically')
    parser.add_argument('--rotate', type=int, default=0, choices=[0, 1, 2, 3], help='Rotate display 0=0°, 1=90°, 2=180°, 3=270°')

    args = parser.parse_args()

    try:
        demo(args.cascaded, args.block_orientation, args.rotate)
    except KeyboardInterrupt:
        pass