luma test

gistfile1.txt

from time import sleep
from luma.core.render import canvas
from luma.led_matrix.device import ws2812

'''
Pin connections:
VCC (red): 5 Volt, don't use Raspberry's power, because it may draw a lot of current
DIN (green): Pin 12, GPIO18
GND (white): Common ground
'''

def mapping():
    result = []
    for block in range(8):  # 0 ... 8
        for y in range(0,56+1,8):
            result.append(block+y)
        for y in range(128-8,128-64-1,-8):
            result.append(block + y)
        for y in range(128,128+56+1,8):
            result.append(block + y)
        for y in range(256-8,256-64-1,-8):
            result.append(block + y)
    return result


def ws2812draw():
    device = ws2812(width=32, height=8, rotate=0, mapping=mapping())
    device.contrast(255)

    with canvas(device) as draw:
        draw.rectangle(device.bounding_box, outline="green", fill="blue")
        draw.line((0, 0, 8, device.height), fill="red")
        draw.line((1, 0, 1, device.height), fill="orange")
        draw.line((0, 0, 0, 0), fill="white")
        draw.line((0, 7, 0, 7), fill="white")
    sleep(3)
    for c in range(0, 255, 8):
        device.contrast(c)
        sleep(0.2)
    sleep(3)
    device.cleanup()
    del device


def ws2812linear(width: int, height: int, mapping=None):
    device = ws2812(width=width, height=height, rotate=0, mapping=mapping)
    device.contrast(32)
    for w in range(width):
        for h in range(height):
            with canvas(device) as draw:
                draw.point((w, h), fill="white")
            sleep(0.05)
    sleep(3)
    device.cleanup()
    del device


print(mapping())
print("32x8 ...")
#ws2812draw()
print("256x1 ...")
#ws2812linear(256, 1)
#ws2812linear(32, 8)
ws2812linear(32, 8, mapping())
print("end.")