diff --git a/.DS_Store b/.DS_Store
index 8edf24a..b3388df 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/User/bsp/.DS_Store b/User/bsp/.DS_Store
new file mode 100644
index 0000000..d0dc709
Binary files /dev/null and b/User/bsp/.DS_Store differ
diff --git a/User/bsp/gpio_exti.c b/User/bsp/gpio_exti.c
new file mode 100644
index 0000000..d260fe1
--- /dev/null
+++ b/User/bsp/gpio_exti.c
@@ -0,0 +1,72 @@
+/* Includes ----------------------------------------------------------------- */
+#include "bsp\gpio.h"
+
+#include <gpio.h>
+#include <main.h>
+
+/* Private define ----------------------------------------------------------- */
+/* Private macro ------------------------------------------------------------ */
+/* Private typedef ---------------------------------------------------------- */
+/* Private variables -------------------------------------------------------- */
+static void (*GPIO_Callback[BSP_GPIO_NUM][BSP_GPIO_CB_NUM])(void);
+
+/* Private function  -------------------------------------------------------- */
+static BSP_GPIO_t GPIO_Get(uint16_t pin) {
+  switch (pin) {
+    case USER_KEY_Pin:
+      return BSP_GPIO_USER_KEY;
+    /* case XXX_Pin:
+      return BSP_GPIO_XXX; */
+    default:
+      return BSP_GPIO_ERR;
+  }
+}
+
+void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) {
+  BSP_GPIO_t gpio = GPIO_Get(GPIO_Pin);
+  if (gpio != BSP_GPIO_ERR) {
+    if (GPIO_Callback[gpio][BSP_GPIO_EXTI_CB]) {
+      GPIO_Callback[gpio][BSP_GPIO_EXTI_CB]();
+    }
+  }
+}
+
+/* Exported functions ------------------------------------------------------- */
+int8_t BSP_GPIO_RegisterCallback(BSP_GPIO_t gpio, BSP_GPIO_Callback_t type, void (*callback)(void)) {
+  if (callback == NULL || gpio >= BSP_GPIO_NUM || type >= BSP_GPIO_CB_NUM) return BSP_ERR_NULL;
+
+  GPIO_Callback[gpio][type] = callback;
+  return BSP_OK;
+}
+
+int8_t BSP_GPIO_EnableIRQ(BSP_GPIO_t gpio) {
+  switch (gpio) {
+    case BSP_GPIO_USER_KEY:
+      HAL_NVIC_EnableIRQ(USER_KEY_EXTI_IRQn);
+      break;
+
+    /* case BSP_GPIO_XXX:
+      HAL_NVIC_EnableIRQ(XXX_IRQn);
+      break; */
+
+    default:
+      return BSP_ERR;
+  }
+  return BSP_OK;
+}
+
+int8_t BSP_GPIO_DisableIRQ(BSP_GPIO_t gpio) {
+  switch (gpio) {
+    case BSP_GPIO_USER_KEY:
+      HAL_NVIC_DisableIRQ(USER_KEY_EXTI_IRQn);
+      break;
+
+    /* case BSP_GPIO_XXX:
+      HAL_NVIC_DisableIRQ(XXX_IRQn);
+      break; */
+
+    default:
+      return BSP_ERR;
+  }
+  return BSP_OK;
+}
\ No newline at end of file
diff --git a/User/bsp/gpio_exti.h b/User/bsp/gpio_exti.h
new file mode 100644
index 0000000..03f431b
--- /dev/null
+++ b/User/bsp/gpio_exti.h
@@ -0,0 +1,37 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ----------------------------------------------------------------- */
+#include <stdint.h>
+
+#include "bsp/bsp.h"
+
+/* Exported constants ------------------------------------------------------- */
+/* Exported macro ----------------------------------------------------------- */
+/* Exported types ----------------------------------------------------------- */
+
+/* GPIO设备枚举，与设备对应 */
+typedef enum {
+  BSP_GPIO_USER_KEY,
+  /* BSP_GPIO_XXX, */
+  BSP_GPIO_NUM,
+  BSP_GPIO_ERR,
+} BSP_GPIO_t;
+
+/* GPIO支持的中断回调函数类型 */
+typedef enum {
+  BSP_GPIO_EXTI_CB,
+  BSP_GPIO_CB_NUM,
+} BSP_GPIO_Callback_t;
+
+/* Exported functions prototypes -------------------------------------------- */
+int8_t BSP_GPIO_RegisterCallback(BSP_GPIO_t gpio, BSP_GPIO_Callback_t type, void (*callback)(void));
+int8_t BSP_GPIO_EnableIRQ(BSP_GPIO_t gpio);
+int8_t BSP_GPIO_DisableIRQ(BSP_GPIO_t gpio);
+
+#ifdef __cplusplus
+}
+#endif
\ No newline at end of file
diff --git a/User/bsp/key_gpio.c b/User/bsp/key_gpio.c
deleted file mode 100644
index d3cfb88..0000000
--- a/User/bsp/key_gpio.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/* Includes ----------------------------------------------------------------- */
-#include "key_gpio.h"
-#include "bsp.h"
-#include <gpio.h>
-
-/* Private define ----------------------------------------------------------- */
-/* Private macro ------------------------------------------------------------ */
-/* Private typedef ---------------------------------------------------------- */
-/* Private variables -------------------------------------------------------- */
-
-static uint32_t key_stats; // ʹ��λ�����¼ÿ��ͨ����״̬�����֧��32LED
-/* �������ñ�������ʵ��Ӳ���޸ģ� */
-static const BSP_Key_Config_t KEY_CONFIGS[] = {
-    {GPIOA, GPIO_PIN_7, GPIO_PIN_SET},   // KEY1����ʱ��ƽΪ��
-    {GPIOA, GPIO_PIN_9, GPIO_PIN_SET}, // KEY2����ʱ��ƽΪ��
-    // ���Ӹ��ఴ��...
-};
-
-#define KEY_COUNT (sizeof(KEY_CONFIGS)/sizeof(KEY_CONFIGS[0])
-	
-
-//��ȡ����״̬����������
-int8_t BSP_Key_Read(BSP_Key_Channel_t ch) {
-    static uint32_t last_press_time[BSP_KEY_COUNT] = {0};      //�ϴΰ���ʱ��
-    const uint32_t debounce_ms = 20;      //��������ʱ��
-    const uint32_t long_press_ms = 2000;      //��������ʱ��
-    
-    if(ch >= BSP_KEY_COUNT) return BSP_KEY_RELEASED ;
-    
-    const BSP_Key_Config_t *cfg = &KEY_CONFIGS[ch];
-    GPIO_PinState state = HAL_GPIO_ReadPin(cfg->port, cfg->pin);
-    
-    if(state == cfg->active_level) {
-        uint32_t now = HAL_GetTick();      //���ڼ�¼��������ʱ�䣨����Ƚ�state��Ϊ�˷�����Ӧ��ͬ��Ч��ƽ�����޸ĵģ�Ҳ���Ըij�ֱ�Ӽ���ƽ�ߵͣ�
-        
-        //�������(ֻ�а��³���20ms�ű���Ϊ���£�
-        if((now - last_press_time[ch]) > debounce_ms) {
-            //������⣨ֻ�б����³���2000ms�ű���Ϊ�dz���������ʵ������������޸ģ�
-            if((now - last_press_time[ch]) > long_press_ms) {
-                return BSP_KEY_LONG_PRESS;
-            }
-            return BSP_KEY_PRESSED;
-        }
-    } else {
-        last_press_time[ch] = HAL_GetTick();
-    }
-    return BSP_KEY_RELEASED;
-}	
diff --git a/User/bsp/key_gpio.h b/User/bsp/key_gpio.h
deleted file mode 100644
index c6fe1de..0000000
--- a/User/bsp/key_gpio.h
+++ /dev/null
@@ -1,36 +0,0 @@
-#pragma once
-
-/* Includes ----------------------------------------------------------------- */
-#include <stdint.h>
-#include "main.h"
-//#include "key_gpio.h"
-/* Exported constants ------------------------------------------------------- */
-/* Exported macro ----------------------------------------------------------- */
-/* Exported types ----------------------------------------------------------- */
-
-/* KEY����״̬�������� */
-typedef enum
-{
-    BSP_KEY_RELEASED,  //�����ͷ�
-    BSP_KEY_PRESSED,   //��������
-    BSP_KEY_LONG_PRESS,  //��������
-} BSP_KEY_Status_t;
-
-
-/* ����ͨ������ */
-typedef enum {
-    BSP_KEY_1,
-    BSP_KEY_2,
-    /* �ɸ�����Ҫ��չ */
-    BSP_KEY_COUNT
-} BSP_Key_Channel_t;
-
-
-/* ����Ӳ�����ýṹ�� */
-typedef struct {
-    GPIO_TypeDef *port;    // GPIO�˿�
-    uint16_t pin;          // ���ű��
-    uint8_t active_level;  // ��Ч��ƽ��GPIO_PIN_SET/RESET��
-} BSP_Key_Config_t;
-
-int8_t BSP_Key_Read(BSP_Key_Channel_t ch);
\ No newline at end of file