【Raspberry Pi】電光掲示板にも応用できるマトリックスLEDを制御する方法

pi@raspberrypi:~ $ sudo ~/rpi-rgb-led-matrix/examples-api-use/demo 
Expected required option -D <demo>
usage: /home/pi/rpi-rgb-led-matrix/examples-api-use/demo <options> -D <demo-nr> [optional parameter]
Options:
	-D <demo-nr>              : Always needs to be set
	--led-gpio-mapping=<name> : Name of GPIO mapping used. Default "regular"
	--led-rows=<rows>         : Panel rows. Typically 8, 16, 32 or 64. (Default: 32).
	--led-cols=<cols>         : Panel columns. Typically 32 or 64. (Default: 32).
	--led-chain=<chained>     : Number of daisy-chained panels. (Default: 1).
	--led-parallel=<parallel> : Parallel chains. range=1..3 (Default: 1).
	--led-multiplexing=<0..17> : Mux type: 0=direct; 1=Stripe; 2=Checkered; 3=Spiral; 4=ZStripe; 5=ZnMirrorZStripe; 6=coreman; 7=Kaler2Scan; 8=ZStripeUneven; 9=P10-128x4-Z; 10=QiangLiQ8; 11=InversedZStripe; 12=P10Outdoor1R1G1-1; 13=P10Outdoor1R1G1-2; 14=P10Outdoor1R1G1-3; 15=P10CoremanMapper; 16=P8Outdoor1R1G1; 17=FlippedStripe (Default: 0)
	--led-pixel-mapper        : Semicolon-separated list of pixel-mappers to arrange pixels.
	                            Optional params after a colon e.g. "U-mapper;Rotate:90"
	                            Available: "Mirror", "Rotate", "U-mapper", "V-mapper". Default: ""
	--led-pwm-bits=<1..11>    : PWM bits (Default: 11).
	--led-brightness=<percent>: Brightness in percent (Default: 100).
	--led-scan-mode=<0..1>    : 0 = progressive; 1 = interlaced (Default: 0).
	--led-row-addr-type=<0..4>: 0 = default; 1 = AB-addressed panels; 2 = direct row select; 3 = ABC-addressed panels; 4 = ABC Shift + DE direct (Default: 0).
	--led-show-refresh        : Show refresh rate.
	--led-limit-refresh=<Hz>  : Limit refresh rate to this frequency in Hz. Useful to keep a
	                            constant refresh rate on loaded system. 0=no limit. Default: 0
	--led-inverse             : Switch if your matrix has inverse colors on.
	--led-rgb-sequence        : Switch if your matrix has led colors swapped (Default: "RGB")
	--led-pwm-lsb-nanoseconds : PWM Nanoseconds for LSB (Default: 130)
	--led-pwm-dither-bits=<0..2> : Time dithering of lower bits (Default: 0)
	--led-no-hardware-pulse   : Don't use hardware pin-pulse generation.
	--led-panel-type=<name>   : Needed to initialize special panels. Supported: 'FM6126A', 'FM6127'
	--led-slowdown-gpio=<0..4>: Slowdown GPIO. Needed for faster Pis/slower panels (Default: 1).
	--led-daemon              : Make the process run in the background as daemon.
	--led-no-drop-privs       : Don't drop privileges from 'root' after initializing the hardware.
Demos, choosen with -D
	0  - some rotating square
	1  - forward scrolling an image (-m <scroll-ms>)
	2  - backward scrolling an image (-m <scroll-ms>)
	3  - test image: a square
	4  - Pulsing color
	5  - Grayscale Block
	6  - Abelian sandpile model (-m <time-step-ms>)
	7  - Conway's game of life (-m <time-step-ms>)
	8  - Langton's ant (-m <time-step-ms>)
	9  - Volume bars (-m <time-step-ms>)
	10 - Evolution of color (-m <time-step-ms>)
	11 - Brightness pulse generator
Example:
	/home/pi/rpi-rgb-led-matrix/examples-api-use/demo -D 1 runtext.ppm
Scrolls the runtext until Ctrl-C is pressed