add MIT License

remote/code/LICENSE

@@ -0,0 +1,22 @@
+MIT License
+
+Copyright (c) 2026 M5Stack Technology CO LTD
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+

remote/code/main/StackChan-RemoteControl-ESPNow.cpp

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #include "M5Unified.h"
 
 extern "C" {

remote/code/main/esp_now/esp_now_init.c

@@ -1,4 +1,8 @@
-
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #include "esp_now_init.h"
 
 /**

remote/code/main/esp_now/esp_now_init.h

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #ifndef __ESP_NOW_INIT_H__
 #define __ESP_NOW_INIT_H__
 

remote/code/main/joystick/joystick_basic.h

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #ifndef _JOYSTICK_BASIC_H_
 #define _JOYSTICK_BASIC_H_
 

remote/code/main/joystick/joystick_handle.c

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #include "joystick_handle.h"
 
 i2c_bus_device_handle_t i2c_device1;  // i2c device handle

remote/code/main/joystick/joystick_handle.h

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #ifndef __JOYSTICK_HANDLE_H__
 #define __JOYSTICK_HANDLE_H__
 

remote/code/main/lvgl_port.cpp

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #include "lvgl_port.h"
 #include <M5Unified.h>
 #include "M5GFX.h"

remote/code/main/lvgl_port.h

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #ifndef LVGL_PORT_H
 #define LVGL_PORT_H
 

remote/code/main/ui/ui.c

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #include "ui.h"
 
 /**

remote/code/main/ui/ui.h

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #ifndef UI_H
 #define UI_H
 

remote/code/main/ui/ui_imu_screen.c

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #include "ui_imu_screen.h"
 #include <math.h>
 #include <stdio.h>

remote/code/main/ui/ui_imu_screen.h

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #ifndef UI_IMU_SCREEN_H
 #define UI_IMU_SCREEN_H
 

remote/code/main/ui/ui_running_screen.c

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #include "ui_running_screen.h"
 #include "../lvgl_port.h"
 #include "freertos/FreeRTOS.h"

remote/code/main/ui/ui_running_screen.h

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #ifndef _UI_RUNNING_SCREEN_H_
 #define _UI_RUNNING_SCREEN_H_
 

remote/code/main/ui/ui_setup_screen.c

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #include "ui_setup_screen.h"
 #include "../lvgl_port.h"
 #include "freertos/FreeRTOS.h"

remote/code/main/ui/ui_setup_screen.h

@@ -1,3 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
 #ifndef _UI_SETUP_SCREEN_H_
 #define _UI_SETUP_SCREEN_H_