kopia lustrzana https://github.com/pimoroni/pimoroni-pico
52 wiersze
1.3 KiB
C++
52 wiersze
1.3 KiB
C++
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#include "rgbled.hpp"
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namespace pimoroni {
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void RGBLED::set_rgb(uint8_t r, uint8_t g, uint8_t b) {
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led_r = r;
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led_g = g;
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led_b = b;
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update_pwm();
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}
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void RGBLED::set_brightness(uint8_t brightness) {
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led_brightness = brightness;
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update_pwm();
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}
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void RGBLED::set_hsv(float h, float s, float v) {
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float i = floor(h * 6.0f);
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float f = h * 6.0f - i;
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v *= 255.0f;
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uint8_t p = v * (1.0f - s);
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uint8_t q = v * (1.0f - f * s);
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uint8_t t = v * (1.0f - (1.0f - f) * s);
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switch (int(i) % 6) {
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case 0: led_r = v; led_g = t; led_b = p; break;
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case 1: led_r = q; led_g = v; led_b = p; break;
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case 2: led_r = p; led_g = v; led_b = t; break;
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case 3: led_r = p; led_g = q; led_b = v; break;
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case 4: led_r = t; led_g = p; led_b = v; break;
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case 5: led_r = v; led_g = p; led_b = q; break;
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}
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update_pwm();
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}
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void RGBLED::update_pwm() {
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uint16_t r16 = GAMMA[led_r];
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uint16_t g16 = GAMMA[led_g];
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uint16_t b16 = GAMMA[led_b];
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r16 *= led_brightness;
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g16 *= led_brightness;
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b16 *= led_brightness;
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if(polarity == Polarity::ACTIVE_LOW) {
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r16 = UINT16_MAX - r16;
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g16 = UINT16_MAX - g16;
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b16 = UINT16_MAX - b16;
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}
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pwm_set_gpio_level(pin_r, r16);
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pwm_set_gpio_level(pin_g, g16);
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pwm_set_gpio_level(pin_b, b16);
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}
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};
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