diff --git a/LICENSE b/LICENSE
index 6831ef1..98d36b6 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2025 M5Stack Technology CO LTD
+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
diff --git a/examples/interrupt_hardware/interrupt_hardware.ino b/examples/interrupt_hardware/interrupt_hardware.ino
index 75bb739..6c0705a 100644
--- a/examples/interrupt_hardware/interrupt_hardware.ino
+++ b/examples/interrupt_hardware/interrupt_hardware.ino
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
  *
  * SPDX-License-Identifier: MIT
  */
@@ -40,7 +40,7 @@ M5IOE1 ioe1;
 #define INT_PIN 1
 
 // M5IOE1 I2C address (default 0x6F)
-#define I2C_ADDR 0x6F
+#define I2C_ADDR M5IOE1_DEFAULT_ADDR
 
 // Pin definitions for M5IOE1 GPIOs
 #define IOE1_PIN_1 M5IOE1_PIN_1  // IO1 on M5IOE1 (pin index 0)
diff --git a/examples/interrupt_polling/interrupt_polling.ino b/examples/interrupt_polling/interrupt_polling.ino
index e975e07..0feecaf 100644
--- a/examples/interrupt_polling/interrupt_polling.ino
+++ b/examples/interrupt_polling/interrupt_polling.ino
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
  *
  * SPDX-License-Identifier: MIT
  */
@@ -35,7 +35,7 @@ M5IOE1 ioe1;
 #define I2C_FREQ 400000
 
 // M5IOE1 I2C address (default 0x6F)
-#define I2C_ADDR 0x6F
+#define I2C_ADDR M5IOE1_DEFAULT_ADDR
 
 // Pin definitions
 #define IOE1_PIN_1 M5IOE1_PIN_1  // IO1 on M5IOE1 (pin index 0)
diff --git a/src/M5IOE1.cpp b/src/M5IOE1.cpp
index 6ee40e6..73eb065 100644
--- a/src/M5IOE1.cpp
+++ b/src/M5IOE1.cpp
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
  *
  * SPDX-License-Identifier: MIT
  */
@@ -1190,7 +1190,7 @@ bool M5IOE1::refreshAw8737aPulse() {
 // RTC RAM 功能 / RTC RAM Functions
 // ============================
 
-bool M5IOE1::writeRtcRam(uint8_t offset, const uint8_t* data, uint8_t length) {
+bool M5IOE1::writeRtcRAM(uint8_t offset, const uint8_t* data, uint8_t length) {
     if (data == nullptr || offset >= M5IOE1_RTC_RAM_SIZE ||
         length == 0 || (offset + length) > M5IOE1_RTC_RAM_SIZE || !_initialized) {
         return false;
@@ -1200,7 +1200,7 @@ bool M5IOE1::writeRtcRam(uint8_t offset, const uint8_t* data, uint8_t length) {
     return _writeBytes(regAddr, data, length);
 }
 
-bool M5IOE1::readRtcRam(uint8_t offset, uint8_t* data, uint8_t length) {
+bool M5IOE1::readRtcRAM(uint8_t offset, uint8_t* data, uint8_t length) {
     if (data == nullptr || offset >= M5IOE1_RTC_RAM_SIZE ||
         length == 0 || (offset + length) > M5IOE1_RTC_RAM_SIZE || !_initialized) {
         return false;
diff --git a/src/M5IOE1.h b/src/M5IOE1.h
index f4d2060..7c30b20 100644
--- a/src/M5IOE1.h
+++ b/src/M5IOE1.h
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
  *
  * SPDX-License-Identifier: MIT
  */
@@ -24,21 +24,23 @@
 // ============================
 // IO 引脚定义 / IO Pin Definitions
 // ============================
-#define M5IOE1_PIN_NC    -1
-#define M5IOE1_PIN_1      0
-#define M5IOE1_PIN_2      1
-#define M5IOE1_PIN_3      2
-#define M5IOE1_PIN_4      3
-#define M5IOE1_PIN_5      4
-#define M5IOE1_PIN_6      5
-#define M5IOE1_PIN_7      6
-#define M5IOE1_PIN_8      7
-#define M5IOE1_PIN_9      8
-#define M5IOE1_PIN_10     9
-#define M5IOE1_PIN_11    10
-#define M5IOE1_PIN_12    11
-#define M5IOE1_PIN_13    12
-#define M5IOE1_PIN_14    13
+typedef enum {
+    M5IOE1_PIN_NC = -1,
+    M5IOE1_PIN_1 = 0,
+    M5IOE1_PIN_2 = 1,
+    M5IOE1_PIN_3 = 2,
+    M5IOE1_PIN_4 = 3,
+    M5IOE1_PIN_5 = 4,
+    M5IOE1_PIN_6 = 5,
+    M5IOE1_PIN_7 = 6,
+    M5IOE1_PIN_8 = 7,
+    M5IOE1_PIN_9 = 8,
+    M5IOE1_PIN_10 = 9,
+    M5IOE1_PIN_11 = 10,
+    M5IOE1_PIN_12 = 11,
+    M5IOE1_PIN_13 = 12,
+    M5IOE1_PIN_14 = 13
+} m5ioe1_pin_t;
 
 // ============================
 // 设备常量 / Device Constants
@@ -592,8 +594,8 @@ public:
     // ========================
     // RTC RAM 功能 / RTC RAM Functions
     // ========================
-    bool writeRtcRam(uint8_t offset, const uint8_t* data, uint8_t length);
-    bool readRtcRam(uint8_t offset, uint8_t* data, uint8_t length);
+    bool writeRtcRAM(uint8_t offset, const uint8_t* data, uint8_t length);
+    bool readRtcRAM(uint8_t offset, uint8_t* data, uint8_t length);
 
     // ========================
     // 系统配置 / System Configuration
diff --git a/src/M5IOE1_i2c_compat.h b/src/M5IOE1_i2c_compat.h
index 10395fd..39dd858 100644
--- a/src/M5IOE1_i2c_compat.h
+++ b/src/M5IOE1_i2c_compat.h
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
+ * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
  *
  * SPDX-License-Identifier: MIT
  */