diff --git a/CMakePresets.json b/CMakePresets.json
index 1965b92..d8926a8 100644
--- a/CMakePresets.json
+++ b/CMakePresets.json
@@ -12,6 +12,7 @@
                     "type": "FILEPATH",
                     "value": "${sourceDir}/cmake/arm-none-eabi-gcc.cmake"
                 }
+                   ,"CMAKE_EXPORT_COMPILE_COMMANDS": "ON"
             },
             "architecture": {
                 "value": "unspecified",
diff --git a/Inc/board_config.h b/Inc/board_config.h
index bfd5394..bbd1742 100644
--- a/Inc/board_config.h
+++ b/Inc/board_config.h
@@ -9,4 +9,15 @@
 
 /******************************************************************************/
 
+#define RS485_RCU            RCU_USART0
+#define RS485_GPIO_RCU       RCU_GPIOA
+#define RS485_GPIO_PORT      GPIOA
+#define RS485_TX_PIN         GPIO_PIN_2
+#define RS485_RX_PIN         GPIO_PIN_3
+#define RS485_PHY            USART0
+#define RS485_BAUDRATE       115200U
+#define RS485_EN_PIN         GPIO_PIN_1
+
+/******************************************************************************/
+
 #endif //BOARD_CONFIG_H
diff --git a/Inc/uart.h b/Inc/uart.h
index 01e2537..260688f 100644
--- a/Inc/uart.h
+++ b/Inc/uart.h
@@ -9,8 +9,7 @@ typedef enum {
     UART_PRINTF_BOTH   = 2
 } uart_printf_port_t;
 
-void uart0_init(uint32_t baudrate);
-void uart1_init(uint32_t baudrate);
+void uart0_init(void);
 void uart_set_printf_port(uart_printf_port_t port);
 
 #endif // UART_H
diff --git a/Src/main.c b/Src/main.c
index fe3ea4a..e059ffa 100644
--- a/Src/main.c
+++ b/Src/main.c
@@ -47,7 +47,7 @@ OF SUCH DAMAGE.
 int main(void)
 {
     systick_config();
-    uart0_init(115200);
+    uart0_init();
     // uart1_init(115200); // 如需使用USART1请初始化
 
     // printf("Hello USART0!\r\n");
diff --git a/Src/uart.c b/Src/uart.c
index a2bba48..1f95cba 100644
--- a/Src/uart.c
+++ b/Src/uart.c
@@ -2,39 +2,36 @@
 #include "gd32e23x_usart.h"
 #include "gd32e23x_rcu.h"
 #include "gd32e23x_gpio.h"
+#include "board_config.h"
 
 
-void uart0_init(uint32_t baudrate) {
+void uart0_init(void) {
     /* 使能 GPIOA 和 USART0 时钟 */
-    rcu_periph_clock_enable(RCU_GPIOA);
-    rcu_periph_clock_enable(RCU_USART0);
+    rcu_periph_clock_enable(RS485_GPIO_RCU);
+    rcu_periph_clock_enable(RS485_RCU);
 
-    /* 配置 PA9 为 USART0_TX，PA10 为 USART0_RX */
-    gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_9 | GPIO_PIN_10);
-    gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_9 | GPIO_PIN_10);
-    gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_9 | GPIO_PIN_10);
+    /* 配置 PA2 为 USART0_TX，PA3 为 USART0_RX */
+    gpio_af_set(RS485_GPIO_PORT, GPIO_AF_1, RS485_TX_PIN | RS485_RX_PIN | RS485_EN_PIN);
+
+    gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, RS485_TX_PIN | RS485_RX_PIN);
+    gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, RS485_TX_PIN | RS485_RX_PIN);
+
+    gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, RS485_EN_PIN);
+    gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, RS485_EN_PIN);
 
     /* 配置波特率、数据位、停止位等 */
-    usart_deinit(USART0);
-    usart_baudrate_set(USART0, baudrate);
-    usart_receive_config(USART0, USART_RECEIVE_ENABLE);
-    usart_transmit_config(USART0, USART_TRANSMIT_ENABLE);
-    usart_enable(USART0);
-}
+    usart_deinit(RS485_PHY);
+    usart_baudrate_set(RS485_PHY, RS485_BAUDRATE);
+    usart_receive_config(RS485_PHY, USART_RECEIVE_ENABLE);
+    usart_transmit_config(RS485_PHY, USART_TRANSMIT_ENABLE);
 
-void uart1_init(uint32_t baudrate) {
-    rcu_periph_clock_enable(RCU_GPIOA);
-    rcu_periph_clock_enable(RCU_USART1);
-    // USART1 默认引脚为 PA2 (TX), PA3 (RX)
-    gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_2 | GPIO_PIN_3);
-    gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_2 | GPIO_PIN_3);
-    gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_2 | GPIO_PIN_3);
-    usart_deinit(USART1);
-    usart_baudrate_set(USART1, baudrate);
-    usart_receive_config(USART1, USART_RECEIVE_ENABLE);
-    usart_transmit_config(USART1, USART_TRANSMIT_ENABLE);
-    usart_enable(USART1);
-}
+    usart_driver_assertime_config(RS485_PHY, 0x01);
+    usart_driver_deassertime_config(RS485_PHY, 0x01);
+
+    usart_rs485_driver_enable(RS485_PHY);
+
+    usart_enable(RS485_PHY);
+    }
 
 static uart_printf_port_t g_printf_port = UART_PRINTF_USART0;