diff --git a/examples/LEDs/PersistentLEDMode/PersistentLEDMode.ino b/examples/LEDs/PersistentLEDMode/PersistentLEDMode.ino
new file mode 100644
index 00000000..b262047d
--- /dev/null
+++ b/examples/LEDs/PersistentLEDMode/PersistentLEDMode.ino
@@ -0,0 +1,64 @@
+/* -*- mode: c++ -*-
+ * kaleidoscope::plugin::PersistentLEDMode -- Persist the current LED mode to Storage
+ * Copyright (C) 2019 Keyboard.io, Inc.
+ * Copyright (C) 2019 Dygma, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see .
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+// *INDENT-OFF*
+KEYMAPS(
+ [0] = KEYMAP_STACKED
+ (
+ Key_LEDEffectNext, Key_1, Key_2, Key_3, Key_4, Key_5, Key_LEDEffectNext,
+ Key_Backtick, Key_Q, Key_W, Key_E, Key_R, Key_T, Key_Tab,
+ Key_PageUp, Key_A, Key_S, Key_D, Key_F, Key_G,
+ Key_PageDown, Key_Z, Key_X, Key_C, Key_V, Key_B, Key_Escape,
+
+ Key_LeftControl, Key_Backspace, Key_LeftGui, Key_LeftShift,
+ Key_NoKey,
+
+ Key_skip, Key_6, Key_7, Key_8, Key_9, Key_0, Key_skip,
+ Key_Enter, Key_Y, Key_U, Key_I, Key_O, Key_P, Key_Equals,
+ Key_H, Key_J, Key_K, Key_L, Key_Semicolon, Key_Quote,
+ Key_skip, Key_N, Key_M, Key_Comma, Key_Period, Key_Slash, Key_Minus,
+
+ Key_RightShift, Key_RightAlt, Key_Spacebar, Key_RightControl,
+ Key_NoKey),
+)
+// *INDENT-ON*
+
+KALEIDOSCOPE_INIT_PLUGINS(LEDControl,
+ EEPROMSettings,
+ PersistentLEDMode,
+ LEDRainbowWaveEffect,
+ LEDRainbowEffect,
+ LEDChaseEffect,
+ LEDBreatheEffect,
+ LEDOff);
+
+void setup() {
+ Kaleidoscope.setup();
+}
+
+void loop() {
+ Kaleidoscope.loop();
+}
diff --git a/src/Kaleidoscope-PersistentLEDMode.h b/src/Kaleidoscope-PersistentLEDMode.h
new file mode 100644
index 00000000..31423e5e
--- /dev/null
+++ b/src/Kaleidoscope-PersistentLEDMode.h
@@ -0,0 +1,21 @@
+/* -*- mode: c++ -*-
+ * kaleidoscope::plugin::PersistentLEDMode -- Persist the current LED mode to Storage
+ * Copyright (C) 2019 Keyboard.io, Inc.
+ * Copyright (C) 2019 Dygma, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see .
+ */
+
+#pragma once
+
+#include
diff --git a/src/kaleidoscope/plugin/PersistentLEDMode.cpp b/src/kaleidoscope/plugin/PersistentLEDMode.cpp
new file mode 100644
index 00000000..6480143b
--- /dev/null
+++ b/src/kaleidoscope/plugin/PersistentLEDMode.cpp
@@ -0,0 +1,59 @@
+/* -*- mode: c++ -*-
+ * kaleidoscope::plugin::PersistentLEDMode -- Persist the current LED mode to Storage
+ * Copyright (C) 2019 Keyboard.io, Inc.
+ * Copyright (C) 2019 Dygma, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see .
+ */
+
+#include
+#include
+#include
+#include
+
+namespace kaleidoscope {
+namespace plugin {
+
+uint16_t PersistentLEDMode::settings_base_;
+uint8_t PersistentLEDMode::cached_mode_index_;
+
+EventHandlerResult PersistentLEDMode::onSetup() {
+ settings_base_ = ::EEPROMSettings.requestSlice(sizeof(cached_mode_index_));
+
+ Kaleidoscope.storage().get(settings_base_, cached_mode_index_);
+
+ // If the index is max, assume an uninitialized EEPROM, and don't set the LED
+ // mode. We don't change the cached index here, `afterEachCycle()` will do
+ // that at the end of he cycle anyway.
+ if (cached_mode_index_ != 0xff)
+ return EventHandlerResult::OK;
+
+ ::LEDControl.set_mode(cached_mode_index_);
+
+ return EventHandlerResult::OK;
+}
+
+EventHandlerResult PersistentLEDMode::afterEachCycle() {
+ if (cached_mode_index_ == ::LEDControl.get_mode_index())
+ return EventHandlerResult::OK;
+
+ cached_mode_index_ = ::LEDControl.get_mode_index();
+ Kaleidoscope.storage().put(settings_base_, cached_mode_index_);
+ Kaleidoscope.storage().commit();
+ return EventHandlerResult::OK;
+}
+
+}
+}
+
+kaleidoscope::plugin::PersistentLEDMode PersistentLEDMode;
diff --git a/src/kaleidoscope/plugin/PersistentLEDMode.h b/src/kaleidoscope/plugin/PersistentLEDMode.h
new file mode 100644
index 00000000..511c8939
--- /dev/null
+++ b/src/kaleidoscope/plugin/PersistentLEDMode.h
@@ -0,0 +1,45 @@
+/* -*- mode: c++ -*-
+ * kaleidoscope::plugin::PersistentLEDMode -- Persist the current LED mode to Storage
+ * Copyright (C) 2019 Keyboard.io, Inc.
+ * Copyright (C) 2019 Dygma, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see .
+ */
+
+/* NOTE: This plugin is a workaround. It allows us to (optionally) save the LED
+ * mode to storage, and restore it on next boot, without having a way to hook
+ * into led mode change events. Once we can hook into that, this plugin shall be
+ * reworked to use it instead of keeping `afterEachCycle()` busy. */
+
+#pragma once
+
+#include
+
+namespace kaleidoscope {
+namespace plugin {
+
+class PersistentLEDMode: public kaleidoscope::Plugin {
+ public:
+ PersistentLEDMode() {}
+
+ EventHandlerResult onSetup();
+ EventHandlerResult afterEachCycle();
+ private:
+ static uint16_t settings_base_;
+ static uint8_t cached_mode_index_;
+};
+
+}
+}
+
+extern kaleidoscope::plugin::PersistentLEDMode PersistentLEDMode;