WS28xx/APA102/UCSx903/TLC59711/P9813 configuration

All parameters are optional. They all have a defined default value.

The WS28xx configuration can created with file "devices.txt".

Parameter name	Description
led_type	WS2801, WS2811, WS2812, WS2812B, WS2813, WS2815, SK6812, SK6812W, TLC59711, UCS1903, UCS290, , APA102, P9813
led_count	170 (default)
led_group_count	1 (default)
clock_speed_hz	Applicable when led_type is : WS2801, APA102 or TLC59711
global_brightness	Applicable for the APA102 only

Singleport (1x)

Parameter name	Description
dmx_start_address	Applicable when led_group_count > 1 or when led_type=TLC59711

Multiport (4x / 8x)

Parameter name	Description
start_uni_port_1
start_uni_port_2
start_uni_port_3
start_uni_port_4
start_uni_port_5
start_uni_port_6
start_uni_port_7
start_uni_port_8
active_out	The ports in use. (default=1)

Test modes

Parameter name	Description
test_pattern	0=no test pattern. 1=Rainbow cycle, 2=Theater chase, 3=Color wipe, 4=Scanner, 5=Fade (default=0)

Example:

#devices.txt

#led_type=WS2812B

led_count=600

# Overwrite datasheet #

#led_rgb_mapping=GRB

# Overwrite timing (us) #

#led_t0h=0.31

#led_t1h=0.78

# Grouping #

#led_group_count=1

# DMX #

#dmx_start_address=1

# Clock based chips #

#clock_speed_hz=4000000

# APA102 #

#global_brightness=255

# Multi port #

#start_uni_port_1=1

#start_uni_port_2=5

#start_uni_port_3=9

#start_uni_port_4=13

#start_uni_port_5=17

#start_uni_port_6=21

#start_uni_port_7=25

#start_uni_port_8=29

active_out=8

# 4x only #

#use_si5351A=0

# Test pattern #

#test_pattern=0

Power saving

For battery powered operation a GPIO pin of the Orange Pi Zero can be connected to a MOSFET. When there is is no DMX or when the node is in time-out state, the GPIO pin level is low.

Subpages (2): Prototype boards Technical details

Comments