From c569668029eec6380edf3b7ce1580acc806068e5 Mon Sep 17 00:00:00 2001
From: Stefan <stefan@somewhere.com>
Date: Sat, 7 Dec 2024 23:06:20 -0500
Subject: [PATCH] Added update_interval to flicker light effect

---
 esphome/components/light/base_light_effects.h | 10 ++++++++++
 esphome/components/light/effects.py           |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/esphome/components/light/base_light_effects.h b/esphome/components/light/base_light_effects.h
index 9e02e889c9..32181b4579 100644
--- a/esphome/components/light/base_light_effects.h
+++ b/esphome/components/light/base_light_effects.h
@@ -193,6 +193,11 @@ class FlickerLightEffect : public LightEffect {
   explicit FlickerLightEffect(const std::string &name) : LightEffect(name) {}
 
   void apply() override {
+    const uint32_t now = millis();
+    if (now - this->last_change_ < this->update_interval_) {
+      return;
+    }
+
     LightColorValues remote = this->state_->remote_values;
     LightColorValues current = this->state_->current_values;
     LightColorValues out;
@@ -217,14 +222,19 @@ class FlickerLightEffect : public LightEffect {
     call.from_light_color_values(out);
     call.set_state(true);
     call.perform();
+
+    this->last_change_ = now;
   }
 
   void set_alpha(float alpha) { this->alpha_ = alpha; }
   void set_intensity(float intensity) { this->intensity_ = intensity; }
+  void set_update_interval(uint32_t update_interval) { this->update_interval_ = update_interval; }
 
  protected:
   float intensity_{};
   float alpha_{};
+  uint32_t last_change_{0};
+  uint32_t update_interval_{};
 };
 
 }  // namespace light
diff --git a/esphome/components/light/effects.py b/esphome/components/light/effects.py
index 67c318eb8e..4c17dfffb6 100644
--- a/esphome/components/light/effects.py
+++ b/esphome/components/light/effects.py
@@ -327,12 +327,14 @@ async def strobe_effect_to_code(config, effect_id):
     {
         cv.Optional(CONF_ALPHA, default=0.95): cv.percentage,
         cv.Optional(CONF_INTENSITY, default=0.015): cv.percentage,
+        cv.Optional(CONF_UPDATE_INTERVAL, default="0ms"): cv.update_interval,
     },
 )
 async def flicker_effect_to_code(config, effect_id):
     var = cg.new_Pvariable(effect_id, config[CONF_NAME])
     cg.add(var.set_alpha(config[CONF_ALPHA]))
     cg.add(var.set_intensity(config[CONF_INTENSITY]))
+    cg.add(var.set_update_interval(config[CONF_UPDATE_INTERVAL]))
     return var