diff --git a/Peripheral/Inc/led.h b/Peripheral/Inc/led.h
index 76494f7..17ef10a 100644
--- a/Peripheral/Inc/led.h
+++ b/Peripheral/Inc/led.h
@@ -14,4 +14,13 @@ void LED_Stop(uint8_t led);
 // duty in [0, 255]
 void LED_SetDuty(uint8_t r, uint8_t g, uint8_t b);
 
+/// @brief LED闪烁
+/// @param loop 循环次数
+/// @param interval 点亮间隔，单位毫秒
+/// @param time 点亮时间，单位毫秒
+/// @param r 通道R
+/// @param g 通道G
+/// @param b 通道B
+void LED_StartNTimes(uint8_t loop, uint16_t interval, uint16_t time, uint8_t r, uint8_t g, uint8_t b);
+
 #endif
diff --git a/Peripheral/Src/led.c b/Peripheral/Src/led.c
index cdf511d..4860bfc 100644
--- a/Peripheral/Src/led.c
+++ b/Peripheral/Src/led.c
@@ -1,34 +1,80 @@
 #include "led.h"
 #include "tim.h"
+#include "timer.h"
 
 #define LED_TIM (&htim3)
 #define LED_R_CHAN TIM_CHANNEL_4
 #define LED_G_CHAN TIM_CHANNEL_3
 #define LED_B_CHAN TIM_CHANNEL_2
 
+#define OFF 0
+#define ON 1
+
+static uint8_t state;
+static uint8_t loop_times;
+static uint16_t light_time;
+static uint16_t loop_interval;
+static uint8_t led_r, led_g, led_b;
+
 void LED_Start(uint8_t led)
 {
-  if (led & LED_R)
-    HAL_TIM_PWM_Start(LED_TIM, LED_R_CHAN);
-  if (led & LED_G)
-    HAL_TIM_PWM_Start(LED_TIM, LED_G_CHAN);
-  if (led & LED_B)
-    HAL_TIM_PWM_Start(LED_TIM, LED_B_CHAN);
+    if (led & LED_R)
+        HAL_TIM_PWM_Start(LED_TIM, LED_R_CHAN);
+    if (led & LED_G)
+        HAL_TIM_PWM_Start(LED_TIM, LED_G_CHAN);
+    if (led & LED_B)
+        HAL_TIM_PWM_Start(LED_TIM, LED_B_CHAN);
 }
 
 void LED_Stop(uint8_t led)
 {
-  if (led & LED_R)
-    HAL_TIM_PWM_Stop(LED_TIM, LED_R_CHAN);
-  if (led & LED_G)
-    HAL_TIM_PWM_Stop(LED_TIM, LED_G_CHAN);
-  if (led & LED_B)
-    HAL_TIM_PWM_Stop(LED_TIM, LED_B_CHAN);
+    if (led & LED_R)
+        HAL_TIM_PWM_Stop(LED_TIM, LED_R_CHAN);
+    if (led & LED_G)
+        HAL_TIM_PWM_Stop(LED_TIM, LED_G_CHAN);
+    if (led & LED_B)
+        HAL_TIM_PWM_Stop(LED_TIM, LED_B_CHAN);
 }
 
 void LED_SetDuty(uint8_t r, uint8_t g, uint8_t b)
 {
-  __HAL_TIM_SetCompare(LED_TIM, LED_R_CHAN, r);
-  __HAL_TIM_SetCompare(LED_TIM, LED_G_CHAN, g);
-  __HAL_TIM_SetCompare(LED_TIM, LED_B_CHAN, b);
+    __HAL_TIM_SetCompare(LED_TIM, LED_R_CHAN, r);
+    __HAL_TIM_SetCompare(LED_TIM, LED_G_CHAN, g);
+    __HAL_TIM_SetCompare(LED_TIM, LED_B_CHAN, b);
+}
+
+void LED_Callback();
+
+void LED_StartNTimes(uint8_t loop, uint16_t interval, uint16_t time,uint8_t r, uint8_t g, uint8_t b)
+{
+    loop_times = loop;
+    loop_interval = interval;
+    light_time = time;
+    led_r = r;
+    led_g = g;
+    led_b = b;
+    state = ON;
+    LED_SetDuty(r, g, b);
+    LED_Start(LED_ALL);
+    TIMER_AddLoopEvent(EVENT_LED, LED_Callback, time);
+}
+
+void LED_Callback()
+{
+    switch (state)
+    {
+    case ON:
+        state = OFF;
+        LED_SetDuty(0, 0, 0);
+        if (--loop_times)
+            TIMER_AddLoopEvent(EVENT_LED, LED_Callback, loop_interval);
+        else
+            TIMER_DelLoopEvent(EVENT_LED);
+        break;
+    case OFF:
+        state = ON;
+        LED_SetDuty(led_r, led_g, led_b);
+        TIMER_AddLoopEvent(EVENT_LED, LED_Callback, light_time);
+        break;
+    }
 }