led_strip_api.c

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/*
 * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#include "esp_log.h"
#include "esp_check.h"
#include "led_strip.h"
#include "led_strip_interface.h"
 
static const char *TAG = "led_strip";
 
esp_err_t led_strip_set_pixel(led_strip_handle_t strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue)
{
    ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
    return strip->set_pixel(strip, index, red, green, blue);
}
 
esp_err_t led_strip_set_pixel_hsv(led_strip_handle_t strip, uint32_t index, uint16_t hue, uint8_t saturation, uint8_t value)
{
    ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
 
    uint32_t red = 0;
    uint32_t green = 0;
    uint32_t blue = 0;
 
    uint32_t rgb_max = value;
    uint32_t rgb_min = rgb_max * (255 - saturation) / 255.0f;
 
    uint32_t i = hue / 60;
    uint32_t diff = hue % 60;
 
    // RGB adjustment amount by hue
    uint32_t rgb_adj = (rgb_max - rgb_min) * diff / 60;
 
    switch (i) {
    case 0:
        red = rgb_max;
        green = rgb_min + rgb_adj;
        blue = rgb_min;
        break;
    case 1:
        red = rgb_max - rgb_adj;
        green = rgb_max;
        blue = rgb_min;
        break;
    case 2:
        red = rgb_min;
        green = rgb_max;
        blue = rgb_min + rgb_adj;
        break;
    case 3:
        red = rgb_min;
        green = rgb_max - rgb_adj;
        blue = rgb_max;
        break;
    case 4:
        red = rgb_min + rgb_adj;
        green = rgb_min;
        blue = rgb_max;
        break;
    default:
        red = rgb_max;
        green = rgb_min;
        blue = rgb_max - rgb_adj;
        break;
    }
 
    return strip->set_pixel(strip, index, red, green, blue);
}
 
esp_err_t led_strip_set_pixel_rgbw(led_strip_handle_t strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue, uint32_t white)
{
    ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
    return strip->set_pixel_rgbw(strip, index, red, green, blue, white);
}
 
esp_err_t led_strip_refresh(led_strip_handle_t strip)
{
    ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
    return strip->refresh(strip);
}
 
esp_err_t led_strip_clear(led_strip_handle_t strip)
{
    ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
    return strip->clear(strip);
}
 
esp_err_t led_strip_del(led_strip_handle_t strip)
{
    ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
    return strip->del(strip);
}