diff --git a/inc/board_config.h b/inc/board_config.h
index 9d9797b..5e5024f 100644
--- a/inc/board_config.h
+++ b/inc/board_config.h
@@ -48,6 +48,7 @@
 #define USART_RX_PIN         GPIO_PIN_3
 #define USART_PHY            USART1
 #define USART_PHY_BAUDRATE   115200U
+#define USART_PHY_IRQ        USART1_IRQn
 #define RS485_EN_PORT        GPIOA
 #define RS485_EN_PIN         GPIO_PIN_4
 
diff --git a/src/fwdgt.c b/src/fwdgt.c
index 996e6f5..4beebce 100644
--- a/src/fwdgt.c
+++ b/src/fwdgt.c
@@ -15,7 +15,7 @@ void watchdog_init(void) {
     rcu_osci_stab_wait(RCU_IRC40K);
 
     /* Configure FWDGT counter clock: 40KHz(IRC40K) / 64 = 0.625 KHz */
-    fwdgt_config(6250, FWDGT_PSC_DIV64); // Set timeout to 1 seconds (625 / 0.625 KHz)
+    fwdgt_config(625, FWDGT_PSC_DIV64); // Set timeout to 1 seconds (625 / 0.625 KHz)
 
     /* Enable FWDGT */
     fwdgt_enable();
diff --git a/src/gd32e23x_it.c b/src/gd32e23x_it.c
index 324a900..b82e933 100644
--- a/src/gd32e23x_it.c
+++ b/src/gd32e23x_it.c
@@ -159,18 +159,19 @@ void EXTI0_1_IRQHandler(void) {
 }
 
 void USART1_IRQHandler(void) {
-    static uint8_t rx_index = 0;
-    static uint8_t rx_buffer[RX_BUFFER_SIZE];
+    // static uint8_t rx_index = 0;
+    // static uint8_t rx_buffer[RX_BUFFER_SIZE];
 
-    if (RESET != usart_interrupt_flag_get(USART0, USART_INT_FLAG_RBNE)) {
-        usart_interrupt_flag_clear(USART0, USART_INT_FLAG_RBNE);
-        uint8_t received_data = (uint8_t) usart_data_receive(USART0);
+    if (RESET != usart_interrupt_flag_get(USART_PHY, USART_INT_FLAG_RBNE)) {
+        usart_interrupt_flag_clear(USART_PHY, USART_INT_FLAG_RBNE);
+        uint8_t received_data = (uint8_t) usart_data_receive(USART_PHY);
 
+        printf("%c", received_data);
         // // 将接收到的数据存储到缓冲区
         // if (rx_index < RX_BUFFER_SIZE - 1) {
         //     rx_buffer[rx_index++] = received_data;
         // }
-        store_char(received_data, &rx_buffer);
+        // store_char(received_data, &rx_buffer);
     }
     //
     // if (RESET != usart_interrupt_flag_get(USART0, USART_INT_FLAG_IDLE)) {
diff --git a/src/usart.c b/src/usart.c
index be620c0..cbaca3b 100644
--- a/src/usart.c
+++ b/src/usart.c
@@ -31,7 +31,7 @@ void usart_config(void)
     usart_baudrate_set(USART_PHY, 115200U);
     usart_receive_config(USART_PHY, USART_RECEIVE_ENABLE);
     usart_transmit_config(USART_PHY, USART_TRANSMIT_ENABLE);
-    nvic_irq_enable(USART1_IRQn, 0);
+    nvic_irq_enable(USART_PHY_IRQ, 0);
     usart_interrupt_enable(USART_PHY, USART_INT_RBNE);
     // usart_interrupt_enable(USART_PHY, USART_INT_IDLE);
     usart_enable(USART_PHY);