From 3d70e8c1e66e52a8f2be7517eaca132be9860b70 Mon Sep 17 00:00:00 2001
From: proddy <paul@derbyshire.nl>
Date: Tue, 23 Dec 2025 19:32:25 +0100
Subject: [PATCH] clear_snapshot_gpios

---
 src/core/system.cpp            | 8 ++++++++
 src/core/system.h              | 1 +
 src/web/WebSettingsService.cpp | 2 ++
 3 files changed, 11 insertions(+)

diff --git a/src/core/system.cpp b/src/core/system.cpp
index c0a1e15f9..08fe00a66 100644
--- a/src/core/system.cpp
+++ b/src/core/system.cpp
@@ -2819,6 +2819,14 @@ void System::restore_snapshot_gpios() {
     for (const auto & gpio : snapshot_valid_system_gpios_) {
         valid_system_gpios_.push_back(gpio);
     }
+
+    // clear the snapshot
+    clear_snapshot_gpios();
+}
+
+void System::clear_snapshot_gpios() {
+    snapshot_used_gpios_.clear();
+    snapshot_valid_system_gpios_.clear();
 }
 
 } // namespace emsesp
diff --git a/src/core/system.h b/src/core/system.h
index 154e4ee3e..9705f7135 100644
--- a/src/core/system.h
+++ b/src/core/system.h
@@ -157,6 +157,7 @@ class System {
     static bool                 load_board_profile(std::vector<int8_t> & data, const std::string & board_profile);
     static void                 make_snapshot_gpios();
     static void                 restore_snapshot_gpios();
+    static void                 clear_snapshot_gpios();
 
     static bool readCommand(const char * data);
 
diff --git a/src/web/WebSettingsService.cpp b/src/web/WebSettingsService.cpp
index 3705a7188..3564feeda 100644
--- a/src/web/WebSettingsService.cpp
+++ b/src/web/WebSettingsService.cpp
@@ -322,6 +322,8 @@ StateUpdateResult WebSettings::update(JsonObject root, WebSettings & settings) {
         return StateUpdateResult::ERROR; // don't save the settings if the GPIOs are invalid
     }
 
+    // clean up snapshot of the GPIOs
+    EMSESP::system_.clear_snapshot_gpios();
 
     // save the setting internally, for reference later
     EMSESP::system_.store_settings(settings);