worldsemi,ws2812-bflb-wo
Description
WS2812 and similar on BFLB GPIO FIFO / WO
Use the Bouffalolab GPIO FIFO / Wire Out to drive addressable RGB leds by producing
specifications-accurate pulse widths bits.
Properties
Node specific properties
Properties not inherited from the base binding file.
Name |
Type |
Details |
|---|---|---|
|
|
How long the output signal has to stay high to signify a 0 bit.
The default is the time for WS2812B (0.4us +/- 150ns).
Default value: |
|
|
How long the output signal has to stay high to signify a 1 bit.
The default is the time for WS2812B (0.8us +/- 150ns).
Default value: |
|
|
How long a bit, a pulse containing a high and a low part, should be.
The default is the time for WS2812B (1.25us +/- 600ns).
Default value: |
|
|
Frequency at which the bits are sent. This or time-total must be defined.
|
|
|
GPIO phandle and specifier for the pin connected to the
led-strip. Exactly one pin should be given.
This property is required. |
|
|
Minimum delay to wait (in microseconds) to make sure that the strip has
latched the signal. If omitted, a default value of 8 microseconds is used.
This default is good for the WS2812 controllers. Note that despite the
WS2812 datasheet states that a 50 microseconds delay is required, it seems
6 microseconds is enough. The default is set to 8 microseconds just to be
safe.
Default value: |
|
|
The number of devices in the daisy-chain.
This property is required. |
|
|
Channel to color mapping (or pixel order).
For example a GRB channel to color mapping would be
color-mapping = <LED_COLOR_ID_GREEN
LED_COLOR_ID_RED
LED_COLOR_ID_BLUE>;
This property is required. |
Deprecated node specific properties
Deprecated properties not inherited from the base binding file.
(None)
Base properties
Properties inherited from the base binding file, which defines common properties that may be set on many nodes. Not all of these may apply to the “worldsemi,ws2812-bflb-wo” compatible.
(None)