ws2812_common.c File Reference

Common code shared accross all supported platforms. More...

#include <stdio.h>
#include <string.h>
#include <ws2812.h>

Include dependency graph for ws2812_common.c:

Go to the source code of this file.

Functions
void	_ws2812_get_rgbmap (uint8_t(*rgbmap)[3], ws2812_order order)
	Initializes a rgb map for a given color order. More...

Detailed Description

Common code shared accross all supported platforms.

Author

Patrick Pedersen

Date

2021-04-09

The following file holds the Tiny-WS2812 code used throughout all platforms.

Definition in file ws2812_common.c.

Function Documentation

_ws2812_get_rgbmap()

void _ws2812_get_rgbmap	(	uint8_t(*)	rgbmap[3],
		ws2812_order	order
	)

Initializes a rgb map for a given color order.

The following function is intended only to be used for internal library code, hence the _ prefix. It fills a 3 element byte array with the necessary offsets to map/convert RGB values to a different color order. For example, setting the order to rgb fills the rgb map with 0, 1, 2 and bgr fill the rgb map with 2, 1, 0, etc.

Definition at line 43 of file ws2812_common.c.

{
        switch (order) {
                case rbg:
                        memcpy(rgbmap, ws2812_order_rbg, 3);
                        break;
                case brg:
                        memcpy(rgbmap, ws2812_order_brg, 3);
                        break;
                case bgr:
                        memcpy(rgbmap, ws2812_order_bgr, 3);
                        break;
                case grb:
                        memcpy(rgbmap, ws2812_order_grb, 3);
                        break;
                case gbr:
                        memcpy(rgbmap, ws2812_order_gbr, 3);
                        break;
                default: // rgb
                        memcpy(rgbmap, ws2812_order_rgb, 3);
                        break;
        }
}