From bb6f8aeb94922fb04fd03499695b56667de2ed92 Mon Sep 17 00:00:00 2001
From: Jonathan Swoboda <154711427+swoboda1337@users.noreply.github.com>
Date: Tue, 22 Jul 2025 22:57:42 -0400
Subject: [PATCH] [remote_receiver] Fix idle validation (#9819)

---
 esphome/components/remote_receiver/__init__.py | 18 +++++++++++++++++-
 .../remote_receiver/remote_receiver_esp32.cpp  |  3 +--
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/esphome/components/remote_receiver/__init__.py b/esphome/components/remote_receiver/__init__.py
index dffc088085..9095016b55 100644
--- a/esphome/components/remote_receiver/__init__.py
+++ b/esphome/components/remote_receiver/__init__.py
@@ -60,6 +60,20 @@ RemoteReceiverComponent = remote_receiver_ns.class_(
 )
 
 
+def validate_config(config):
+    if CORE.is_esp32:
+        variant = esp32.get_esp32_variant()
+        if variant in (esp32.const.VARIANT_ESP32, esp32.const.VARIANT_ESP32S2):
+            max_idle = 65535
+        else:
+            max_idle = 32767
+        if CONF_CLOCK_RESOLUTION in config:
+            max_idle = int(max_idle * 1000000 / config[CONF_CLOCK_RESOLUTION])
+        if config[CONF_IDLE].total_microseconds > max_idle:
+            raise cv.Invalid(f"config 'idle' exceeds the maximum value of {max_idle}us")
+    return config
+
+
 def validate_tolerance(value):
     if isinstance(value, dict):
         return TOLERANCE_SCHEMA(value)
@@ -136,7 +150,9 @@ CONFIG_SCHEMA = remote_base.validate_triggers(
                 cv.boolean,
             ),
         }
-    ).extend(cv.COMPONENT_SCHEMA)
+    )
+    .extend(cv.COMPONENT_SCHEMA)
+    .add_extra(validate_config)
 )
 
 
diff --git a/esphome/components/remote_receiver/remote_receiver_esp32.cpp b/esphome/components/remote_receiver/remote_receiver_esp32.cpp
index 3d6346baec..3e6172c6d6 100644
--- a/esphome/components/remote_receiver/remote_receiver_esp32.cpp
+++ b/esphome/components/remote_receiver/remote_receiver_esp32.cpp
@@ -86,10 +86,9 @@ void RemoteReceiverComponent::setup() {
 
   uint32_t event_size = sizeof(rmt_rx_done_event_data_t);
   uint32_t max_filter_ns = 255u * 1000 / (RMT_CLK_FREQ / 1000000);
-  uint32_t max_idle_ns = 65535u * 1000;
   memset(&this->store_.config, 0, sizeof(this->store_.config));
   this->store_.config.signal_range_min_ns = std::min(this->filter_us_ * 1000, max_filter_ns);
-  this->store_.config.signal_range_max_ns = std::min(this->idle_us_ * 1000, max_idle_ns);
+  this->store_.config.signal_range_max_ns = this->idle_us_ * 1000;
   this->store_.filter_symbols = this->filter_symbols_;
   this->store_.receive_size = this->receive_symbols_ * sizeof(rmt_symbol_word_t);
   this->store_.buffer_size = std::max((event_size + this->store_.receive_size) * 2, this->buffer_size_);