diff --git a/CMakeLists.txt b/CMakeLists.txt
index ed06994..562c8b0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,7 @@
 cmake_minimum_required(VERSION 3.28)
 include(cmake/toolchain.cmake)
 
+set(PROJECT_NAME "gd32e23x_template")
 project(gd32e23x_template)
 
 set(VERSION_MAJOR 0)
@@ -39,11 +40,11 @@ set(TARGET_C_SRC
         ${CMAKE_SOURCE_DIR}/src/fwdgt.c
 )
 
-add_executable(gd32e23x_template ${TARGET_C_SRC})
+add_executable(${PROJECT_NAME} ${TARGET_C_SRC})
 
-target_link_libraries(gd32e23x_template GD32E23X_SDK)
-target_include_directories(gd32e23x_template PUBLIC inc)
+target_link_libraries(${PROJECT_NAME} GD32E23X_SDK)
+target_include_directories(${PROJECT_NAME} PUBLIC inc)
 
 # Generate .bin and .hex
-generate_binary_file(gd32e23x_template)
-generate_hex_file(gd32e23x_template)
+generate_binary_file(${PROJECT_NAME})
+generate_hex_file(${PROJECT_NAME})
diff --git a/README.md b/README.md
index 1a1fe8a..3870b0d 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@
 ### 版本号
 默认版本号为`0.0.1`，在`CMakeLists.txt`中修改`PROJECT_VERSION`即可。
 ### 项目名称
-默认项目名称为`gd32e23x_template`，在`CMakeLists.txt`中修改`PROJECT_NAME`即可。请先修改项目名称再配置编译环境。
+默认项目名称为`gd32e23x_template`，在`CMakeLists.txt`中修改`set(PROJECT_NAME "gd32e23x_template")`即可。请先修改项目名称再配置编译环境。
 ### 软件IIC与硬件IIC
 本项目中提供了软件IIC与硬件IIC的驱动，但是默认使用硬件IIC，如果需要使用软件IIC，请在`board_config.h`中取消注释`// #define SOFTWARE_IIC`(line 8)。
 ### 编译选项
diff --git a/src/gd32e23x_it.c b/src/gd32e23x_it.c
index 4dc5453..9c2009d 100644
--- a/src/gd32e23x_it.c
+++ b/src/gd32e23x_it.c
@@ -120,4 +120,13 @@ void TIMER16_IRQHandler(void)
         }
         led_status = !led_status;
     }
-}
\ No newline at end of file
+}
+
+/*!
+    \brief      this function handles USART0 interrupt request
+    \param[in]  none
+    \param[out] none
+    \retval     none
+*/
+void USART0_IRQHandler(void) {
+}
diff --git a/src/main.c b/src/main.c
index c6b5403..26cb9fd 100644
--- a/src/main.c
+++ b/src/main.c
@@ -14,6 +14,7 @@
 */
 int main(void)
 {
+    setbuf(stdout, NULL);
     /* configure systick */
     systick_config();
     /* configure USART */
diff --git a/src/usart.c b/src/usart.c
index 25e1a4e..4416f9e 100644
--- a/src/usart.c
+++ b/src/usart.c
@@ -28,6 +28,10 @@ void usart_config(void)
     usart_transmit_config(USART_PHY, USART_TRANSMIT_ENABLE);
 
     usart_enable(USART_PHY);
+
+    nvic_irq_enable(USART0_IRQn, 0);
+    usart_interrupt_enable(USART_PHY, USART_INT_RBNE);
+    usart_interrupt_enable(USART_PHY, USART_INT_IDLE);
 }
 
 /**