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Diffstat (limited to 'quantum/visualizer/lcd_backlight.c')
-rw-r--r-- | quantum/visualizer/lcd_backlight.c | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/quantum/visualizer/lcd_backlight.c b/quantum/visualizer/lcd_backlight.c deleted file mode 100644 index 23978974e3..0000000000 --- a/quantum/visualizer/lcd_backlight.c +++ /dev/null @@ -1,87 +0,0 @@ -/* -The MIT License (MIT) - -Copyright (c) 2016 Fred Sundvik - -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. -*/ - -#include "lcd_backlight.h" -#include <math.h> - -static uint8_t current_hue = 0; -static uint8_t current_saturation = 0; -static uint8_t current_intensity = 0; -static uint8_t current_brightness = 0; - -void lcd_backlight_init(void) { - lcd_backlight_hal_init(); - lcd_backlight_color(current_hue, current_saturation, current_intensity); -} - -// This code is based on Brian Neltner's blogpost and example code -// "Why every LED light should be using HSI colorspace". -// http://blog.saikoled.com/post/43693602826/why-every-led-light-should-be-using-hsi -static void hsi_to_rgb(float h, float s, float i, uint16_t* r_out, uint16_t* g_out, uint16_t* b_out) { - unsigned int r, g, b; - h = fmodf(h, 360.0f); // cycle h around to 0-360 degrees - h = 3.14159f * h / 180.0f; // Convert to radians. - s = s > 0.0f ? (s < 1.0f ? s : 1.0f) : 0.0f; // clamp s and i to interval [0,1] - i = i > 0.0f ? (i < 1.0f ? i : 1.0f) : 0.0f; - - // Math! Thanks in part to Kyle Miller. - if (h < 2.09439f) { - r = 65535.0f * i / 3.0f * (1.0f + s * cos(h) / cosf(1.047196667f - h)); - g = 65535.0f * i / 3.0f * (1.0f + s * (1.0f - cosf(h) / cos(1.047196667f - h))); - b = 65535.0f * i / 3.0f * (1.0f - s); - } else if (h < 4.188787) { - h = h - 2.09439; - g = 65535.0f * i / 3.0f * (1.0f + s * cosf(h) / cosf(1.047196667f - h)); - b = 65535.0f * i / 3.0f * (1.0f + s * (1.0f - cosf(h) / cosf(1.047196667f - h))); - r = 65535.0f * i / 3.0f * (1.0f - s); - } else { - h = h - 4.188787; - b = 65535.0f * i / 3.0f * (1.0f + s * cosf(h) / cosf(1.047196667f - h)); - r = 65535.0f * i / 3.0f * (1.0f + s * (1.0f - cosf(h) / cosf(1.047196667f - h))); - g = 65535.0f * i / 3.0f * (1.0f - s); - } - *r_out = r > 65535 ? 65535 : r; - *g_out = g > 65535 ? 65535 : g; - *b_out = b > 65535 ? 65535 : b; -} - -void lcd_backlight_color(uint8_t hue, uint8_t saturation, uint8_t intensity) { - uint16_t r, g, b; - float hue_f = 360.0f * (float)hue / 255.0f; - float saturation_f = (float)saturation / 255.0f; - float intensity_f = (float)intensity / 255.0f; - intensity_f *= (float)current_brightness / 255.0f; - hsi_to_rgb(hue_f, saturation_f, intensity_f, &r, &g, &b); - current_hue = hue; - current_saturation = saturation; - current_intensity = intensity; - lcd_backlight_hal_color(r, g, b); -} - -void lcd_backlight_brightness(uint8_t b) { - current_brightness = b; - lcd_backlight_color(current_hue, current_saturation, current_intensity); -} - -uint8_t lcd_get_backlight_brightness(void) { return current_brightness; } |