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@ -16,312 +16,230 @@ |
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// Reported the issue + fix at: |
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// Reported the issue + fix at: |
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// https://github.com/esphome/esphome/pull/1643 |
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// https://github.com/esphome/esphome/pull/1643 |
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// |
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// |
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// A work-around for this issue can be enabled using this define: |
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// A work-around for this issue can be enabled using the following |
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// define. Note that the code provides a forward-compatible fix, so |
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// having this define active with a fixed ESPHome version should |
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// not be a problem. |
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#define TRANSITION_TO_OFF_BUGFIX |
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#define TRANSITION_TO_OFF_BUGFIX |
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//#define YEELIGHT_DEBUG_LOG |
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namespace esphome |
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{ |
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namespace rgbww |
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namespace esphome { |
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namespace rgbww { |
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static const char *TAG = "yeelight_bs2.light"; |
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// Same range as supported by the original Yeelight firmware. |
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static const int HOME_ASSISTANT_MIRED_MIN = 153; |
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static const int HOME_ASSISTANT_MIRED_MAX = 588; |
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// The PWM frequencies as used by the original device |
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// for driving the LED circuitry. |
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const float RGB_PWM_FREQUENCY = 3000.0f; |
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// I measured 10kHz for this channel, but making this 10000.0f results |
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// in the blue channel failing. So possibly this is the actual |
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// frequency to use (it's the frequency that provides a 13 bit |
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// bith depth to the PWM channel). |
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const float WHITE_PWM_FREQUENCY = 9765.0f; |
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class YeelightBS2LightOutput : public Component, public light::LightOutput |
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{ |
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{ |
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static const char *TAG = "yeelight_bs2.light"; |
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// Same range as supported by the original Yeelight firmware. |
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static const int HOME_ASSISTANT_MIRED_MIN = 153; |
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static const int HOME_ASSISTANT_MIRED_MAX = 588; |
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// The PWM frequency as used by the original device |
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// for driving the LED circuitry. |
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const float PWM_FREQUENCY = 3000.0f; |
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class YeelightBS2LightOutput : public Component, public light::LightOutput |
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public: |
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light::LightTraits get_traits() override |
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{ |
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{ |
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public: |
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void set_red(ledc::LEDCOutput *red) { red_ = red; red_->set_frequency(PWM_FREQUENCY); } |
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void set_green(ledc::LEDCOutput *green) { green_ = green; green_->set_frequency(PWM_FREQUENCY); } |
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void set_blue(ledc::LEDCOutput *blue) { blue_ = blue; blue_->set_frequency(PWM_FREQUENCY); } |
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void set_white(ledc::LEDCOutput *white) { white_ = white; white_->set_frequency(PWM_FREQUENCY); } |
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void set_master1(gpio::GPIOBinaryOutput *master1) { master1_ = master1; } |
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void set_master2(gpio::GPIOBinaryOutput *master2) { master2_ = master2; } |
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light::LightTraits get_traits() override |
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{ |
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auto traits = light::LightTraits(); |
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traits.set_supports_rgb(true); |
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traits.set_supports_color_temperature(true); |
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traits.set_supports_brightness(true); |
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traits.set_supports_rgb_white_value(false); |
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traits.set_supports_color_interlock(true); |
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traits.set_min_mireds(HOME_ASSISTANT_MIRED_MIN); |
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traits.set_max_mireds(HOME_ASSISTANT_MIRED_MAX); |
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return traits; |
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} |
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auto traits = light::LightTraits(); |
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traits.set_supports_rgb(true); |
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traits.set_supports_color_temperature(true); |
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traits.set_supports_brightness(true); |
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traits.set_supports_rgb_white_value(false); |
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traits.set_supports_color_interlock(true); |
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traits.set_min_mireds(HOME_ASSISTANT_MIRED_MIN); |
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traits.set_max_mireds(HOME_ASSISTANT_MIRED_MAX); |
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return traits; |
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} |
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void set_red_output(ledc::LEDCOutput *red) { |
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red_ = red; |
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red_->set_frequency(RGB_PWM_FREQUENCY); |
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} |
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void set_green_output(ledc::LEDCOutput *green) { |
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green_ = green; |
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green_->set_frequency(RGB_PWM_FREQUENCY); |
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} |
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void set_blue_output(ledc::LEDCOutput *blue) { |
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blue_ = blue; |
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blue_->set_frequency(RGB_PWM_FREQUENCY); |
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} |
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void set_white_output(ledc::LEDCOutput *white) { |
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white_ = white; |
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white_->set_frequency(WHITE_PWM_FREQUENCY); |
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} |
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void set_master1_output(gpio::GPIOBinaryOutput *master1) { |
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master1_ = master1; |
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} |
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void set_master2_output(gpio::GPIOBinaryOutput *master2) { |
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master2_ = master2; |
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} |
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void write_state(light::LightState *state) override |
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{ |
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auto values = state->current_values; |
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void write_state(light::LightState *state) override |
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{ |
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auto values = state->current_values; |
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ESP_LOGD(TAG, "B = State %f, RGB %f %f %f, BRI %f, TEMP %f", |
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values.get_state(), |
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values.get_red(), values.get_green(), values.get_blue(), |
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values.get_brightness(), values.get_color_temperature()); |
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#ifdef YEELIGHT_DEBUG_LOG |
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ESP_LOGD(TAG, "B = State %f, RGB %f %f %f, BRI %f, TEMP %f", |
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values.get_state(), |
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values.get_red(), values.get_green(), values.get_blue(), |
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values.get_brightness(), values.get_color_temperature()); |
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#endif |
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// Power down the light when its state is 'off'. |
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if (values.get_state() == 0) |
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{ |
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this->turn_off_(); |
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#ifdef YEELIGHT_DEBUG_LOG |
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previous_state_ = -1; |
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previous_brightness_ = 0; |
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// Power down the light when its state is 'off'. |
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if (values.get_state() == 0) |
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{ |
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turn_off_(); |
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#ifdef TRANSITION_TO_OFF_BUGFIX |
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previous_state_ = -1; |
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previous_brightness_ = 0; |
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#endif |
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#endif |
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return; |
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} |
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return; |
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} |
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auto brightness = values.get_brightness(); |
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auto brightness = values.get_brightness(); |
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#ifdef TRANSITION_TO_OFF_BUGFIX |
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#ifdef TRANSITION_TO_OFF_BUGFIX |
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// Remember the brightness that is used when the light is fully ON. |
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if (values.get_state() == 1) { |
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previous_brightness_ = brightness; |
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} |
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// When transitioning towards zero brightness ... |
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else if (values.get_state() < previous_state_) { |
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// ... check if the prevous brightness is the same as the current |
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// brightness. If yes, then the brightness isn't being scaled ... |
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if (previous_brightness_ == brightness) { |
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// ... and we need to do that ourselves. |
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brightness = values.get_state() * brightness; |
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} |
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} |
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previous_state_ = values.get_state(); |
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#endif |
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// Leave it to the default tooling to figure out the basics. |
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// Because of the color interlocking, there are two possible outcomes: |
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// - red, green, blue zero -> the light is in color temperature mode |
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// - cwhite, wwhite zero -> the light is in RGB mode |
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float red, green, blue, cwhite, wwhite; |
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state->current_values_as_rgbww(&red, &green, &blue, &cwhite, &wwhite, true, false); |
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if (cwhite > 0 || wwhite > 0) |
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{ |
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this->turn_on_in_color_temperature_mode_( |
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values.get_color_temperature(), brightness); |
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} |
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else |
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{ |
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// The RGB mode does not use the RGB values as determined by |
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// current_values_as_rgbww(). The device has LED driving circuitry |
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// that takes care of the required brightness curve while ramping up |
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// the brightness. Therefore, the actual RGB values are passed here. |
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this->turn_on_in_rgb_mode_( |
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values.get_red(), values.get_green(), values.get_blue(), |
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brightness, values.get_state()); |
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// Remember the brightness that is used when the light is fully ON. |
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if (values.get_state() == 1) { |
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previous_brightness_ = brightness; |
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} |
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// When transitioning towards zero brightness ... |
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else if (values.get_state() < previous_state_) { |
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// ... check if the prevous brightness is the same as the current |
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// brightness. If yes, then the brightness isn't being scaled ... |
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if (previous_brightness_ == brightness) { |
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// ... and we need to do that ourselves. |
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brightness = values.get_state() * brightness; |
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} |
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} |
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} |
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} |
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protected: |
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ledc::LEDCOutput *red_; |
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ledc::LEDCOutput *green_; |
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ledc::LEDCOutput *blue_; |
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ledc::LEDCOutput *white_; |
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esphome::gpio::GPIOBinaryOutput *master1_; |
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esphome::gpio::GPIOBinaryOutput *master2_; |
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#ifdef TRANSITION_TO_OFF_BUGFIX |
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float previous_state_ = 1; |
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float previous_brightness_ = -1; |
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previous_state_ = values.get_state(); |
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#endif |
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#endif |
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void turn_off_() |
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{ |
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// Using set_level() calls for the RGB GPIOs, and not |
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// turn_off(), because turn_off() causes some unwanted |
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// flashing when powering off at low brightness. |
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red_->set_level(1); |
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green_->set_level(1); |
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blue_->set_level(1); |
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white_->turn_off(); |
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master1_->turn_off(); |
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master2_->turn_off(); |
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} |
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// Leave it to the default tooling to figure out the basics. |
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// Because of the color interlocking, there are two possible outcomes: |
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// - red, green, blue zero -> the light is in color temperature mode |
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// - cwhite, wwhite zero -> the light is in RGB mode |
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float red, green, blue, cwhite, wwhite; |
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state->current_values_as_rgbww(&red, &green, &blue, &cwhite, &wwhite, true, false); |
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void turn_on_in_rgb_mode_(float red, float green, float blue, float brightness, float state) |
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if (cwhite > 0 || wwhite > 0) |
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{ |
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{ |
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#ifdef YEELIGHT_DEBUG_LOG |
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ESP_LOGD(TAG, "Activate RGB %f, %f, %f, BRIGHTNESS %f", red, green, blue, brightness); |
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#endif |
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// The brightness must be at least 3/100 to light up the LEDs. |
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// During transitions (where state is a fraction between 0 and 1, |
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// indicating the transition progress) we don't apply this to |
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// get smoother transitioning when turning on the light. |
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if (state == 1 && brightness < 0.03f) |
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brightness = 0.03f; |
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// Apply brightness. |
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red = red * brightness; |
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green = green * brightness; |
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blue = blue * brightness; |
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// Inverse the signal. The LEDs in the lamp's circuit are brighter |
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// when the pwm levels on the GPIO pins are lower. |
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red = 1.0f - red; |
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green = 1.0f - green; |
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blue = 1.0f - blue; |
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#ifdef YEELIGHT_DEBUG_LOG |
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ESP_LOGD(TAG, "New LED state : RGBW %f, %f, %f", red, green, blue); |
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#endif |
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// Drive the LEDs. |
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red_->set_level(red); |
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green_->set_level(green); |
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blue_->set_level(blue); |
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white_->turn_off(); |
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master1_->turn_on(); |
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master2_->turn_on(); |
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turn_on_in_white_mode_(values.get_color_temperature(), brightness); |
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} |
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} |
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void turn_on_in_color_temperature_mode_(float temperature, float brightness) |
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else |
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{ |
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{ |
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#ifdef YEELIGHT_DEBUG_LOG |
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ESP_LOGD(TAG, "Activate TEMPERATURE %f, BRIGHTNESS %f", temperature, brightness); |
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#endif |
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// Empirically determined during programming the temperature GPIO output |
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// code from below, by checking how far my outputs were off from the |
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// original lamp firmeware's outputs. This scaler is used for correcting |
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// my output towards the original output. |
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float scaler; |
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float red = 1.0; |
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float green = 1.0; |
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float blue = 1.0; |
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float white = 1.0; |
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// Temperature band 370 - 588 |
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if (temperature <= HOME_ASSISTANT_MIRED_MAX && temperature >= 371) |
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{ |
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scaler = 3.23f; |
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float start = 371; |
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float end = 588; |
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float band = end - start; |
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float red_volt = 2.86f * (1.0f - brightness); |
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red = red_volt / scaler; |
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float green_1 = 2.90f + (temperature - start) * (2.97f - 2.90f) / band; |
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float green_100 = 0.45f + (temperature - start) * (1.13f - 0.45f) / band; |
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float green_volt = green_1 + brightness * (green_100 - green_1); |
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green = green_volt / scaler; |
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float white_1 = 0.28f - (temperature - start) * (0.28f - 0.19f) / band; |
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float white_100 = 1.07f - (temperature - start) * (1.07f - 0.22f) / band; |
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float white_volt = white_1 + brightness * (white_100 - white_1); |
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white = white_volt / scaler; |
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} |
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// Temperature band 334 - 370 |
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else if (temperature >= 334) |
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{ |
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scaler = 3.23f; |
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float red_volt = (1.0f - brightness) * 2.86f; |
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red = red_volt / scaler; |
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float green_volt = 2.9f - brightness * (2.9f - 0.45f); |
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green = green_volt / scaler; |
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float white_volt = 0.28f + brightness * (1.07f - 0.28f); |
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white = white_volt / scaler; |
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} |
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// Temperature band 313 - 333 |
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// |
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// The light becomes noticably brighter when moving from temperature 334 to |
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// temperature 333. There's a little jump in the lighting output here. |
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// Possibly this is a switch from warm to cold lighting as imposed by the |
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// LED circuitry, making this unavoidable. However, it would be interesting |
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// to see if we can smoothen this out. |
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// BTW: This behavior is in sync with the original firmware. |
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else if (temperature >= 313) |
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{ |
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scaler = 3.23f; |
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float red_volt = 2.89f - brightness * (2.89f - 0.32f); |
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red = red_volt / scaler; |
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float green_volt = 2.96f - brightness * (2.96f - 1.03f); |
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green = green_volt / scaler; |
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float white_volt = 0.42f + brightness * (2.43f - 0.42f); |
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float scaler_white = 3.45f; |
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white = white_volt / scaler_white; |
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} |
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// Temperature band 251 - 312 |
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else if (temperature >= 251) |
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{ |
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scaler = 3.48f; |
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float white_correction = 1.061; |
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float white_volt = 0.5f + brightness * (3.28f * white_correction - 0.5f); |
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white = white_volt / scaler; |
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} |
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// Temperature band 223 - 250 |
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else if (temperature >= 223) |
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{ |
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scaler = 3.25f; |
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float green_volt = 2.94f - brightness * (2.94f - 0.88f); |
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green = green_volt / scaler; |
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// The RGB mode does not use the RGB values as determined by |
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// current_values_as_rgbww(). The device has LED driving circuitry |
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// that takes care of the required brightness curve while ramping up |
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// the brightness. Therefore, the actual RGB values are passed here. |
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turn_on_in_rgb_mode_( |
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values.get_red(), values.get_green(), values.get_blue(), |
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brightness, values.get_state()); |
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} |
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} |
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protected: |
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ledc::LEDCOutput *red_; |
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ledc::LEDCOutput *green_; |
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ledc::LEDCOutput *blue_; |
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ledc::LEDCOutput *white_; |
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esphome::gpio::GPIOBinaryOutput *master1_; |
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esphome::gpio::GPIOBinaryOutput *master2_; |
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esphome::rgbww::yeelight_bs2::WhiteLight white_light_; |
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#ifdef TRANSITION_TO_OFF_BUGFIX |
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float previous_state_ = 1; |
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float previous_brightness_ = -1; |
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#endif |
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float blue_volt = 3.02f - brightness * (3.02f - 1.59f); |
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blue = blue_volt / scaler; |
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void turn_off_() |
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{ |
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red_->set_level(1); |
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green_->set_level(1); |
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blue_->set_level(1); |
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white_->set_level(0); |
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master2_->turn_off(); |
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master1_->turn_off(); |
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} |
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void turn_on_in_rgb_mode_(float red, float green, float blue, float brightness, float state) |
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{ |
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ESP_LOGD(TAG, "Activate RGB %f, %f, %f, BRIGHTNESS %f", red, green, blue, brightness); |
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// The brightness must be at least 3/100 to light up the LEDs. |
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// During transitions (where state is a fraction between 0 and 1, |
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// indicating the transition progress) we don't apply this to |
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// get smoother transitioning when turning on the light. |
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if (state == 1 && brightness < 0.03f) |
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brightness = 0.03f; |
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// Apply proper color mixing around the RGB white point. |
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// Overall, the RGB colors are very usable when simply scaling the |
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|
// RGB channels with the brightness, but around the white point, |
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|
|
|
// the color is a bit on the red side of the spectrum. The following |
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|
|
// scaling was created to fix that. |
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auto red_w = (0.07f + brightness*(0.57f - 0.07f)) * red; |
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auto green_w = (0.13f + brightness*(1.00f - 0.13f)) * green; |
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auto blue_w = (0.06f + brightness*(0.45f - 0.06f)) * blue; |
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|
// For other colors, we can simply scale the RGB channels with the |
|
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|
// requested brightness, resulting in a very usable color. Not 100% |
|
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|
|
|
// the same as the original firmware, but sometimes even better IMO. |
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|
auto red_c = red * brightness; |
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auto green_c = green * brightness; |
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|
auto blue_c = blue * brightness; |
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|
// The actual RGB values are a weighed mix of the above two. |
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|
// The closer to the white point, the more the white point |
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|
// value applies. |
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auto level_red = (red_w * ((green+blue)/2)) + (red_c * (1-(green+blue)/2)); |
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auto level_green = (green_w * ((red+blue)/2)) + (green_c * (1-(red+blue)/2)); |
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auto level_blue = (blue_w * ((red+green)/2)) + (blue_c * (1-(red+green)/2)); |
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|
|
// Invert the signal. The LEDs in the lamp's circuit are brighter |
|
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|
|
// when the pwm levels on the GPIO pins are lower. |
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|
|
level_red = 1.0f - level_red; |
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|
level_green = 1.0f - level_green; |
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|
|
level_blue = 1.0f - level_blue; |
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|
ESP_LOGD(TAG, "New LED state : RGBW %f, %f, %f, off", level_red, level_green, level_blue); |
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|
|
|
// Drive the LEDs. |
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|
|
master2_->turn_on(); |
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|
|
master1_->turn_on(); |
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|
|
red_->set_level(level_red); |
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|
|
green_->set_level(level_green); |
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|
|
blue_->set_level(level_blue); |
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|
|
white_->set_level(0); |
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|
} |
|
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|
|
void turn_on_in_white_mode_(float temperature, float brightness) |
|
|
|
|
|
{ |
|
|
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|
|
ESP_LOGD(TAG, "Activate TEMPERATURE %f, BRIGHTNESS %f", |
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|
|
|
|
temperature, brightness); |
|
|
|
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|
|
|
float white_correction = 1.024f; |
|
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|
|
float white_volt = 0.42f + brightness * (2.51f * white_correction - 0.42f); |
|
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|
|
float scaler_white = 3.36f; |
|
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|
|
white = white_volt / scaler_white; |
|
|
|
|
|
} |
|
|
|
|
|
// Temperature band 153 - 222 |
|
|
|
|
|
else if (temperature >= HOME_ASSISTANT_MIRED_MIN) |
|
|
|
|
|
{ |
|
|
|
|
|
float start = 153; |
|
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|
|
float end = 222; |
|
|
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|
|
float band = end - start; |
|
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|
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|
|
scaler = 3.23f; |
|
|
|
|
|
|
|
|
|
|
|
float green_volt = 2.86f - brightness * 2.86f; |
|
|
|
|
|
green = green_volt / scaler; |
|
|
|
|
|
|
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|
|
|
float blue_1 = 2.92f + (temperature - start) * (2.97f - 2.92f) / band; |
|
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|
|
float blue_100 = 0.62f + (temperature - start) * (1.17f - 0.62f) / band; |
|
|
|
|
|
float blue_volt = blue_1 - brightness * (blue_1 - blue_100); |
|
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|
|
blue = blue_volt / scaler; |
|
|
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|
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|
|
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|
|
float white_1 = 0.28f + (temperature - start) * (0.37f - 0.28f) / band; |
|
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|
|
float white_100 = 1.1f + (temperature - start) * (2.0f - 1.1f) / band; |
|
|
|
|
|
float white_volt = white_1 + brightness * (white_100 - white_1); |
|
|
|
|
|
float scaler_white = 3.27f; |
|
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|
|
|
white = white_volt / scaler_white; |
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
white_light_.set_color(temperature, brightness); |
|
|
|
|
|
|
|
|
#ifdef YEELIGHT_DEBUG_LOG |
|
|
|
|
|
ESP_LOGD(TAG, "New LED state : RGBW %f, %f, %f, %f", red, green, blue, white); |
|
|
|
|
|
#endif |
|
|
|
|
|
|
|
|
ESP_LOGD(TAG, "New LED state : RGBW %f, %f, %f, %f", |
|
|
|
|
|
white_light_.red, white_light_.green, white_light_.blue, |
|
|
|
|
|
white_light_.white); |
|
|
|
|
|
|
|
|
red_->set_level(red); |
|
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|
|
green_->set_level(green); |
|
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|
|
blue_->set_level(blue); |
|
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|
|
white_->set_level(white); |
|
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|
|
|
master2_->turn_on(); |
|
|
|
|
|
master1_->turn_on(); |
|
|
|
|
|
} |
|
|
|
|
|
}; |
|
|
|
|
|
|
|
|
master2_->turn_on(); |
|
|
|
|
|
master1_->turn_on(); |
|
|
|
|
|
red_->set_level(white_light_.red); |
|
|
|
|
|
green_->set_level(white_light_.green); |
|
|
|
|
|
blue_->set_level(white_light_.blue); |
|
|
|
|
|
white_->set_level(white_light_.white); |
|
|
|
|
|
} |
|
|
|
|
|
}; |
|
|
|
|
|
|
|
|
} // namespace rgbww |
|
|
|
|
|
|
|
|
} // namespace rgbww |
|
|
} // namespace esphome |
|
|
} // namespace esphome |