feat: 开启定时器和串口接收中断

project/inc/at32f403a_407_int.h

@@ -65,6 +65,10 @@ void SVC_Handler(void);
 void DebugMon_Handler(void);
 void PendSV_Handler(void);
 
+void USART1_IRQHandler(void);
+void USART2_IRQHandler(void);
+void USART3_IRQHandler(void);
+void TMR6_GLOBAL_IRQHandler(void);
 /* add user code begin exported functions */
 
 /* add user code end exported functions */