ws2812b_matrix.h File Reference

ws2812b diode matrix handling module based on ws2812b driver. More...

#include <stdint.h>
#include <stdbool.h>

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Macros
#define	MATRIX_DIM   8
	Width of the ws2812b matrix.

Functions
void	ws2812b_matrix_set_coord (uint8_t x, uint8_t y, uint8_t R, uint8_t G, uint8_t B)
	Sets diode of chosen coordinates to specified RGB color.
void	ws2812b_matrix_fill (uint8_t R, uint8_t G, uint8_t B, uint8_t delay, bool update)
	Fills diode matrix with one chosen color.

Detailed Description

ws2812b diode matrix handling module based on ws2812b driver.

Author

bslrd

Date

2026

SPDX-License-Identifier: MIT

Macro Definition Documentation

MATRIX_DIM

#define MATRIX_DIM   8

Width of the ws2812b matrix.

Function Documentation

ws2812b_matrix_fill()

void ws2812b_matrix_fill	(	uint8_t	R,
		uint8_t	G,
		uint8_t	B,
		uint8_t	delay,
		bool	update )

Fills diode matrix with one chosen color.

Parameters

R	R value of color (0 to 255)
G	G value of color (0 to 255)
B	B value of color (0 to 255)
delay	value of delay in ms between each diode state change (use only with update = true)
update	specifies if this function should update physical diode state.

Note

Stores RGB value in internal buffer (ws2812b_color); does not update physical LEDs unless update = true.

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ws2812b_matrix_set_coord()

void ws2812b_matrix_set_coord	(	uint8_t	x,
		uint8_t	y,
		uint8_t	R,
		uint8_t	G,
		uint8_t	B )

Sets diode of chosen coordinates to specified RGB color.

Parameters

x	horizontal coordinate of chosen diode (0 to MATRIX_DIM -1)
y	vertical coordinate of chosen diode (0 to MATRIX_DIM -1)
R	R value of color (0-255)
G	G value of color (0-255)
B	B value of color (0-255)

Note

Stores RGB value in internal buffer (ws2812b_color); does not update physical LEDs.

Coordinate mapping depends on physical wiring (zigzag layout assumed).

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