diff --git a/usrc/main.cpp b/usrc/app_main.cpp
similarity index 96%
rename from usrc/main.cpp
rename to usrc/app_main.cpp
index c38c4c8..aac0e35 100644
--- a/usrc/main.cpp
+++ b/usrc/app_main.cpp
@@ -3,6 +3,7 @@
 
 #include "base/config_service.hpp"
 #include "base/device_info.hpp"
+#include "board/public_board.hpp"
 #include "protocol_impl/protocol_impl_service.hpp"
 #include "zsdk/zcanreceiver/zcanreceiver.hpp"
 #include "zsdk/zsdk.hpp"
@@ -35,6 +36,7 @@ void debug_light_ctrl() {
 }
 
 void umain() {
+  PublicBoard::ins()->initialize();
   m_debugled.initAsOutput(DEBUG_LIGHT_GPIO, kxs_gpio_nopull, false, false);
 
   // config_init();
diff --git a/usrc/board/public_board.cpp b/usrc/board/public_board.cpp
new file mode 100644
index 0000000..62d3b30
--- /dev/null
+++ b/usrc/board/public_board.cpp
@@ -0,0 +1,29 @@
+#include "public_board.hpp"
+using namespace iflytop;
+
+void DEBUG_UART_INIT(void) {
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+  __HAL_RCC_USART1_CLK_ENABLE();
+  __HAL_RCC_GPIOA_CLK_ENABLE();
+
+  huart1.Instance          = USART1;
+  huart1.Init.BaudRate     = 460800;
+  huart1.Init.WordLength   = UART_WORDLENGTH_8B;
+  huart1.Init.StopBits     = UART_STOPBITS_1;
+  huart1.Init.Parity       = UART_PARITY_NONE;
+  huart1.Init.Mode         = UART_MODE_TX_RX;
+  huart1.Init.HwFlowCtl    = UART_HWCONTROL_NONE;
+  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
+  if (HAL_UART_Init(&huart1) != HAL_OK) {
+    Error_Handler();
+  }
+
+  GPIO_InitStruct.Pin       = GPIO_PIN_9 | GPIO_PIN_10;
+  GPIO_InitStruct.Mode      = GPIO_MODE_AF_PP;
+  GPIO_InitStruct.Pull      = GPIO_NOPULL;
+  GPIO_InitStruct.Speed     = GPIO_SPEED_FREQ_VERY_HIGH;
+  GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
+  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+}
+void PublicBoard::initialize() { DEBUG_UART_INIT(); }
diff --git a/usrc/board/public_board.hpp b/usrc/board/public_board.hpp
new file mode 100644
index 0000000..8a3e144
--- /dev/null
+++ b/usrc/board/public_board.hpp
@@ -0,0 +1,16 @@
+#include <stddef.h>
+#include <stdio.h>
+
+#include "zsdk/zsdk.hpp"
+#include "zstm32/zstm32.hpp"
+
+namespace iflytop {
+class PublicBoard {
+ public:
+  static PublicBoard* ins() {
+    static PublicBoard instance;
+    return &instance;
+  }
+  void initialize();
+};
+}  // namespace iflytop
\ No newline at end of file