ws2812b.c File Reference

Implementation of ws2812b diodes handling module (STM32 HAL). More...

#include "ws2812b.h"

Include dependency graph for ws2812b.c:

Data Structures
struct	ws2812b_color

Macros
#define	BRIGHTNESS_MODE   2
#define	BRIGHTNESS   0.5
#define	zero   0b1100000
#define	one   0b11111000

Functions
void	ws2812b_init (SPI_HandleTypeDef *spi_handler)
	Initializes ws2812b handling module by passing given SPI handler.
void	ws2812b_set_rgb (uint16_t diode_id, uint8_t R, uint8_t G, uint8_t B)
	Sets chosen diode to specified RGB color.
void	ws2812b_update (void)
	Transfers diode color values specified with ws2812b_set_rgb to physical display.

Detailed Description

Implementation of ws2812b diodes handling module (STM32 HAL).

Author

bslrd

Date

2026

SPDX-License-Identifier: MIT

Macro Definition Documentation

BRIGHTNESS

#define BRIGHTNESS   0.5

BRIGHTNESS_MODE

#define BRIGHTNESS_MODE   2

one

#define one   0b11111000

zero

#define zero   0b1100000

Function Documentation

ws2812b_init()

void ws2812b_init

(

SPI_HandleTypeDef *

spi_handler

)

Initializes ws2812b handling module by passing given SPI handler.

Parameters

spi_handler

pointer to spi handler of choice.

Note

Should be called from main() before use of other ws2812b functions

ws2812b_set_rgb()

void ws2812b_set_rgb	(	uint16_t	diode_id,
		uint8_t	R,
		uint8_t	G,
		uint8_t	B )

Sets chosen diode to specified RGB color.

Parameters

diode_id	Index of LED (0 to LED_NUMBER-1).
R	R value of color (0 to 255)
G	G value of color (0 to 255)
B	B value of color (0 to 255)

Note

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

ws2812b_update()

void ws2812b_update

(

void

)

Transfers diode color values specified with ws2812b_set_rgb to physical display.