diff --git a/Core/App/Common/serial_port.hpp b/Core/App/Common/serial_port.hpp
index a3abe7f..550ce44 100644
--- a/Core/App/Common/serial_port.hpp
+++ b/Core/App/Common/serial_port.hpp
@@ -49,7 +49,7 @@ public:
         return result;
     }
 
-    static void WriteLine(const char* format, ...) {
+    static void WriteLineDMA(const char* format, ...) {
         WaitTransmit();
         isTransmitting = true;
         va_list args;
@@ -79,7 +79,7 @@ public:
         HAL_UART_Transmit(kHandle, reinterpret_cast<uint8_t*>(buffer), len, kTransmitTimeout);
     }
 
-    static void Write(const char* format, ...) {
+    static void WriteDMA(const char* format, ...) {
         WaitTransmit();
         isTransmitting = true;
         va_list args;
@@ -105,7 +105,7 @@ public:
         HAL_UART_Transmit(kHandle, reinterpret_cast<uint8_t*>(buffer), strlen(buffer), kTransmitTimeout);
     }
 
-    static void WriteBytes(const uint8_t* data, size_t size) {
+    static void WriteBytesDMA(const uint8_t* data, size_t size) {
         WaitTransmit();
         isTransmitting = true;
         HAL_UART_Transmit_DMA(kHandle, const_cast<uint8_t*>(data), size);
diff --git a/Core/App/app.cpp b/Core/App/app.cpp
index e7efc6e..d2ef5f1 100644
--- a/Core/App/app.cpp
+++ b/Core/App/app.cpp
@@ -15,7 +15,7 @@ extern "C" void AppStart() {
     auto gpio = GpioHelper::GpioInit(GPIOB, GPIO_PIN_0, GPIO_MODE_OUTPUT_PP, GPIO_NOPULL, GPIO_PIN_SET);
     while (true) {
         gpio.Toggle();
-        SerialPort::WriteLine("LED is toggled,current state: %s", gpio.Read() ? "OFF" : "ON");
+        SerialPort::WriteBlocking("LED is toggled,current state: %s", gpio.Read() ? "OFF" : "ON");
         DelayS(1);
     }
 }