diff --git a/BSP/Buzzer.c b/BSP/Buzzer.c
new file mode 100644
index 0000000..4b8ec41
--- /dev/null
+++ b/BSP/Buzzer.c
@@ -0,0 +1,27 @@
+#include "stm32f10x.h"
+
+void Buzzer_Init(void) {
+    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
+    GPIO_InitTypeDef GPIO_InitStructure;
+    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
+    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
+    GPIO_Init(GPIOB, &GPIO_InitStructure);
+
+    GPIO_SetBits(GPIOB, GPIO_Pin_12);
+}
+
+void Buzzer_ON(void) {
+    GPIO_ResetBits(GPIOB, GPIO_Pin_12);
+}
+
+void Buzzer_OFF(void) {
+    GPIO_SetBits(GPIOB, GPIO_Pin_12);
+}
+void Buzzer_TOGGLE(void) {
+    if (GPIO_ReadOutputDataBit(GPIOB, GPIO_Pin_12) == 0) {
+        GPIO_SetBits(GPIOB, GPIO_Pin_12);
+    }else {
+        GPIO_ResetBits(GPIOB, GPIO_Pin_12);
+    }
+}
\ No newline at end of file
diff --git a/BSP/Buzzer.h b/BSP/Buzzer.h
new file mode 100644
index 0000000..dbba512
--- /dev/null
+++ b/BSP/Buzzer.h
@@ -0,0 +1,12 @@
+#ifndef __BUZZER_H
+#define __BUZZER_H
+
+
+void Buzzer_Init(void);
+
+void Buzzer_ON(void);
+
+void Buzzer_OFF(void);
+
+void Buzzer_TOGGLE(void);
+#endif
diff --git a/BSP/LightSensor.c b/BSP/LightSensor.c
new file mode 100644
index 0000000..2667688
--- /dev/null
+++ b/BSP/LightSensor.c
@@ -0,0 +1,16 @@
+#include "stm32f10x.h"
+
+void LightSensor_Init(void) {
+    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
+
+    GPIO_InitTypeDef GPIO_InitStructure;
+    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
+    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
+
+    GPIO_Init(GPIOB, &GPIO_InitStructure);
+}
+
+uint8_t LightSensor_Read(void) {
+    return GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_13);
+}
\ No newline at end of file
diff --git a/BSP/LightSensor.h b/BSP/LightSensor.h
new file mode 100644
index 0000000..f40a3d0
--- /dev/null
+++ b/BSP/LightSensor.h
@@ -0,0 +1,8 @@
+#ifndef __LIGHT_SENSOR_H
+#define __LIGHT_SENSOR_H
+
+void LightSensor_Init(void);
+
+uint8_t LightSensor_Read(void);
+
+#endif //STM32F103_SPL_CLION_LIGHTSENSOR_H
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 91600c1..13eb9f1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -32,6 +32,10 @@ add_executable(${CMAKE_PROJECT_NAME}
     BSP/Delay.c
     BSP/LED.c
     BSP/Key.c
+        BSP/Buzzer.c
+        BSP/Buzzer.h
+        BSP/LightSensor.c
+        BSP/LightSensor.h
 )
 
 target_include_directories(${CMAKE_PROJECT_NAME} PRIVATE
diff --git a/User/main.c b/User/main.c
index 2a74e6b..612dab5 100644
--- a/User/main.c
+++ b/User/main.c
@@ -1,22 +1,17 @@
 #include "stm32f10x.h"
 #include "Delay.h"
-#include "LED.h"
-#include "Key.h"
-
+#include "Buzzer.h"
+#include "LightSensor.h"
 uint8_t KeyNum;
-int main(void){
 
-    LED_Init();
-    Key_Init();
-    while(1){
-
-        KeyNum = Key_GetNum();
-        if (KeyNum == 1) {
-            LED0_TOGGLE();
+int main(void) {
+    Buzzer_Init();
+    LightSensor_Init();
+    while (1) {
+        if (LightSensor_Read() == 1) {
+            Buzzer_ON();
+        } else {
+            Buzzer_OFF();
         }
-        if (KeyNum == 2) {
-            LED1_TOGGLE();
-        }
-
     }
 }