From c965dfc6f52180793ab881d0b8458ceb2eac211a Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Mon, 6 Apr 2026 16:55:52 -1000
Subject: [PATCH] [ltr390] Reduce data polling delay and timeout

- Reduce polling delay from 2ms to 1ms (sufficient in practice)
- Reduce timeout from 100ms to 25ms to stay within 30ms max blocking time
- Change polling log message from DEBUG to VERBOSE to reduce log spam
---
 esphome/components/ltr390/ltr390.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/esphome/components/ltr390/ltr390.cpp b/esphome/components/ltr390/ltr390.cpp
index ba4a7ea5cb..033f31a3d1 100644
--- a/esphome/components/ltr390/ltr390.cpp
+++ b/esphome/components/ltr390/ltr390.cpp
@@ -45,6 +45,7 @@ optional<uint32_t> LTR390Component::read_sensor_data_(LTR390MODE mode) {
   uint8_t buffer[num_bytes];
 
   // Wait until data available
+  constexpr uint32_t max_wait_ms = 25;
   const uint32_t now = millis();
   while (true) {
     std::bitset<8> status = this->reg(LTR390_MAIN_STATUS).get();
@@ -52,12 +53,12 @@ optional<uint32_t> LTR390Component::read_sensor_data_(LTR390MODE mode) {
     if (available)
       break;
 
-    if (millis() - now > 100) {
+    if (millis() - now > max_wait_ms) {
       ESP_LOGW(TAG, "Sensor didn't return any data, aborting");
       return {};
     }
-    ESP_LOGD(TAG, "Waiting for data");
-    delay(2);
+    ESP_LOGV(TAG, "Waiting for data");
+    delay(1);
   }
 
   if (!this->read_bytes(MODEADDRESSES[mode], buffer, num_bytes)) {