e131: fix issue 1579: limitation of maximum light count (esphome#1619)

KPWhiver · Mar 19, 2021 · e5b45b6 · e5b45b6
1 parent a77784a
commit e5b45b6
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/esphome/components/e131/e131_addressable_light_effect.cpp b/esphome/components/e131/e131_addressable_light_effect.cpp
@@ -53,7 +53,8 @@ bool E131AddressableLightEffect::process_(int universe, const E131Packet &packet
 
   int output_offset = (universe - first_universe_) * get_lights_per_universe();
   // limit amount of lights per universe and received
-  int output_end = std::min(it->size(), std::min(output_offset + get_lights_per_universe(), packet.count - 1));
+  int output_end =
+      std::min(it->size(), std::min(output_offset + get_lights_per_universe(), output_offset + packet.count - 1));
   auto input_data = packet.values + 1;
 
   ESP_LOGV(TAG, "Applying data for '%s' on %d universe, for %d-%d.", get_name().c_str(), universe, output_offset,