diff --git a/include/led.h b/include/led.h
new file mode 100644
index 0000000..4ee7ad9
--- /dev/null
+++ b/include/led.h
@@ -0,0 +1,39 @@
+//=========================================================================== 
+// Organization : Individual developer 
+// Filename     : led.h
+// Author       : Feng Bohan
+// Create Time  : 01:45:11 2024-07-15
+// Last Modified: 01:45:11 2024-07-15
+// Abstract     :  
+//--------------------------------------------------------------------------
+// Description:
+// 
+//--------------------------------------------------------------------------
+// Modification History:
+//--------------------------------------------------------------------------
+// Rev      Date        Who         Description
+// ---      ----        ---         -----------
+// 0.0.01   2024-07-15  Feng Bohan  initial version
+//===========================================================================
+#ifndef LED_H
+#define LED_H
+
+#include "public.h"
+
+#define LED  P2
+#define LED0 P2_0
+#define LED1 P2_1
+#define LED2 P2_2
+#define LED3 P2_3
+#define LED4 P2_4
+#define LED5 P2_5
+#define LED6 P2_6
+#define LED7 P2_7
+
+u8 led_on(u8 led);
+u8 led_off(u8 led);
+u8 led_toggle(u8 led);
+void led_all_on(void);
+void led_all_off(void);
+
+#endif
diff --git a/src/led.c b/src/led.c
new file mode 100644
index 0000000..8b054c7
--- /dev/null
+++ b/src/led.c
@@ -0,0 +1,126 @@
+//=========================================================================== 
+// Organization : Individual developer 
+// Filename     : led.c
+// Author       : Feng Bohan
+// Create Time  : 01:49:36 2024-07-15
+// Last Modified: 01:49:36 2024-07-15
+// Abstract     :  
+//--------------------------------------------------------------------------
+// Description:
+// 
+//--------------------------------------------------------------------------
+// Modification History:
+//--------------------------------------------------------------------------
+// Rev      Date        Who         Description
+// ---      ----        ---         -----------
+// 0.0.01   2024-07-15  Feng Bohan  initial version
+//===========================================================================
+#include "led.h"
+
+/*******************************************************************************
+* 函 数 名      : led_on
+* 函数功能      : 点亮指定的LED
+* 输    入      : LED号
+* 输    出      : 0 成功，其他失败
+*******************************************************************************/
+u8 led_on(u8 led)
+{
+	//低电平点亮LED
+	switch(led)
+	{
+		case 0: LED0 = 0; break;
+		case 1: LED1 = 0; break;
+		case 2: LED2 = 0; break;
+		case 3: LED3 = 0; break;
+		case 4: LED4 = 0; break;
+		case 5: LED5 = 0; break;
+		case 6: LED6 = 0; break;
+		case 7: LED7 = 0; break;
+		default: return led; // 错误的LED号
+	}
+	return 0; // 成功
+}
+
+/*******************************************************************************
+* 函 数 名      : led_off
+* 函数功能      : 熄灭指定的LED
+* 输    入      : LED号
+* 输    出      : 0 成功，其他失败
+*******************************************************************************/
+u8 led_off(u8 led)
+{
+	//高电平熄灭LED
+	switch(led)
+	{
+		case 0: LED0 = 1; break;
+		case 1: LED1 = 1; break;
+		case 2: LED2 = 1; break;
+		case 3: LED3 = 1; break;
+		case 4: LED4 = 1; break;
+		case 5: LED5 = 1; break;
+		case 6: LED6 = 1; break;
+		case 7: LED7 = 1; break;
+		default: return led; // 错误的LED号
+	}
+	return 0; // 成功
+}
+
+/*******************************************************************************
+* 函 数 名      : led_toggle
+* 函数功能      : 切换指定的LED的状态
+* 输    入      : LED号
+* 输    出      : 0 成功，其他失败
+*******************************************************************************/
+u8 led_toggle(u8 led)
+{
+	//切换LED的状态
+	switch(led)
+	{
+		case 0: LED0 = !LED0; break;
+		case 1: LED1 = !LED1; break;
+		case 2: LED2 = !LED2; break;
+		case 3: LED3 = !LED3; break;
+		case 4: LED4 = !LED4; break;
+		case 5: LED5 = !LED5; break;
+		case 6: LED6 = !LED6; break;
+		case 7: LED7 = !LED7; break;
+		default: return led; // 错误的LED号
+	}
+	return 0; // 成功
+}
+
+/*******************************************************************************
+* 函 数 名      : led_all_on
+* 函数功能      : 点亮所有LED
+* 输    入      : 无
+* 输    出      : 无
+*******************************************************************************/
+void led_all_on(void)
+{
+	LED0 = 0;
+	LED1 = 0;
+	LED2 = 0;
+	LED3 = 0;
+	LED4 = 0;
+	LED5 = 0;
+	LED6 = 0;
+	LED7 = 0;
+}
+
+/*******************************************************************************
+* 函 数 名      : led_all_off
+* 函数功能      : 熄灭所有LED
+* 输    入      : 无
+* 输    出      : 无
+*******************************************************************************/
+void led_all_off(void)
+{
+	LED0 = 1;
+	LED1 = 1;
+	LED2 = 1;
+	LED3 = 1;
+	LED4 = 1;
+	LED5 = 1;
+	LED6 = 1;
+	LED7 = 1;
+}
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