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Code Issues Releases Wiki Activity

[light] Fix cwww state restore (#13493)

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This commit is contained in:
Keith Burzinski
2026-01-23 18:53:20 -06:00
committed by Jonathan Swoboda
parent 10cbd0164a
commit d6841ba33a
1 changed files with 4 additions and 1 deletions
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5
esphome/components/light/light_call.cpp
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@@ -391,7 +391,10 @@ void LightCall::transform_parameters_() {
min_mireds > 0.0f && max_mireds > 0.0f) {
ESP_LOGD(TAG, "'%s': setting cold/warm white channels using white/color temperature values",
this->parent_->get_name().c_str());
if (this->has_color_temperature()) {
// Only compute cold_white/warm_white from color_temperature if they're not already explicitly set.
// This is important for state restoration, where both color_temperature and cold_white/warm_white
// are restored from flash - we want to preserve the saved cold_white/warm_white values.
if (this->has_color_temperature() && !this->has_cold_white() && !this->has_warm_white()) {
const float color_temp = clamp(this->color_temperature_, min_mireds, max_mireds);
const float range = max_mireds - min_mireds;
const float ww_fraction = (color_temp - min_mireds) / range;