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ws2812.c
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ws2812.c
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/**
* MIT License
*
* Copyright (c) 2024 My Techno Talent
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/**
* @file ws2812.c
*
* @brief Struct inits and functions for the ws2812 driver.
*
* This contains the struct initializations and functions for the ws2812 driver
* for use with the Raspberry Pi Pico microcontroller board.
*
* @author Kevin Thomas
* @date 04/11/2023
*/
#include "ws2812.h"
ws2812_config_t ws2812_config = {
.pin = WS2812
};
void ws2812_init(ws2812_config_t *ws2812_config) {
gpio_init(ws2812_config->pin);
gpio_set_dir(ws2812_config->pin, 1);
}
void ws2812_set_pixel(ws2812_config_t *ws2812_config, uint32_t set_color) {
uint8_t index = 0;
uint8_t bit = 0;
uint8_t bits = 24;
while (bits--) {
if (set_color & (1 << bit++)) {
// one
for (index = 0; index <= 10; index++)
gpio_put(ws2812_config->pin, 1);
for (index = 0; index <= 2; index++)
gpio_put(ws2812_config->pin, 0);
} else {
// zero
for (index = 0; index <= 3; index++)
gpio_put(ws2812_config->pin, 1);
for (index = 0; index <= 10; index++)
gpio_put(ws2812_config->pin, 0);
}
}
}