ESP32-PaxCounter/src/rgb_led.cpp
2018-04-05 08:46:59 +02:00

84 lines
2.0 KiB
C++

// Basic Config
#include "globals.h"
#ifdef HAS_RGB_LED
// RGB Led instance
SmartLed rgb_led(LED_WS2812, 1, HAS_RGB_LED);
float rgb_CalcColor(float p, float q, float t)
{
if (t < 0.0f)
t += 1.0f;
if (t > 1.0f)
t -= 1.0f;
if (t < 1.0f / 6.0f)
return p + (q - p) * 6.0f * t;
if (t < 0.5f)
return q;
if (t < 2.0f / 3.0f)
return p + ((q - p) * (2.0f / 3.0f - t) * 6.0f);
return p;
}
// ------------------------------------------------------------------------
// Hue, Saturation, Lightness color members
// HslColor using H, S, L values (0.0 - 1.0)
// L should be limited to between (0.0 - 0.5)
// ------------------------------------------------------------------------
RGBColor rgb_hsl2rgb(float h, float s, float l)
{
RGBColor RGB_color;
float r;
float g;
float b;
if (s == 0.0f || l == 0.0f)
{
r = g = b = l; // achromatic or black
}
else
{
float q = l < 0.5f ? l * (1.0f + s) : l + s - (l * s);
float p = 2.0f * l - q;
r = rgb_CalcColor(p, q, h + 1.0f / 3.0f);
g = rgb_CalcColor(p, q, h);
b = rgb_CalcColor(p, q, h - 1.0f / 3.0f);
}
RGB_color.R = (uint8_t)(r * 255.0f);
RGB_color.G = (uint8_t)(g * 255.0f);
RGB_color.B = (uint8_t)(b * 255.0f);
return RGB_color;
}
void rgb_set_color(uint16_t hue) {
if (hue == COLOR_NONE) {
// Off
rgb_led[0] = Rgb(0,0,0);
} else {
// see http://www.workwithcolor.com/blue-color-hue-range-01.htm
// H (is color from 0..360) should be between 0.0 and 1.0
// S is saturation keep it to 1
// L is brightness should be between 0.0 and 0.5
// cfg.rgblum is between 0 and 100 (percent)
RGBColor target = rgb_hsl2rgb( hue / 360.0f, 1.0f, 0.005f * cfg.rgblum);
//uint32_t color = target.R<<16 | target.G<<8 | target.B;
rgb_led[0] = Rgb(target.R, target.G, target.B);
}
// Show
rgb_led.show();
}
#else
// No RGB LED empty functions
void rgb_set_color(uint16_t hue) {}
#endif