diff --git a/os_port.c b/os_port.c
index e4c9f62..1d09d31 100644
--- a/os_port.c
+++ b/os_port.c
@@ -157,9 +157,9 @@ void SVC_Handler_C(os_uintptr_t* svc_args){
 //    - reboot system
 
 
-#define AUTO_REBOOT_ENABLE                  /* 允许自动重启 */
-#define OUTPUT_FAULT_TO_CONSOLE_ENABLE      /* 在调试终端输出运行时信息 */
-#define RECOVER_FROM_FAULT_ENABLE           /* 尝试从错误中继续运行 */
+//#define AUTO_REBOOT_ENABLE                  /* 允许自动重启 */
+//#define OUTPUT_FAULT_TO_CONSOLE_ENABLE      /* 在调试终端输出运行时信息 */
+//#define RECOVER_FROM_FAULT_ENABLE           /* 尝试从错误中继续运行 */
 
 #if defined(RECOVER_FROM_FAULT_ENABLE)
 static void recover_from_task_fault(void){
@@ -184,6 +184,9 @@ void HardFault_Handler_C(ContextStateFrame_t* frame, uint32_t lr_value){
     uint32_t bus_fault_address = SCB->BFAR;
     uint32_t mem_manage_fault_address = SCB->MMFAR;
     uint32_t cfsr = SCB->CFSR;
+    uint32_t hfsr = SCB->HFSR;
+    uint32_t dfsr = SCB->DFSR;
+    uint32_t afsr = SCB->AFSR;
 
 #if defined(AUTO_REBOOT_ENABLE)
     const uint32_t usage_fault_mask = 0xffff0000;
@@ -215,9 +218,9 @@ void HardFault_Handler_C(ContextStateFrame_t* frame, uint32_t lr_value){
     printf(" PSR   = %08"OS_PRIx"\n", frame->xpsr);
     printf("- FSR/FAR:\n");
     printf(" CFSR  = %08"OS_PRIx"\n", cfsr);
-    printf(" HFSR  = %08"OS_PRIx"\n", SCB->HFSR);
-    printf(" DFSR  = %08"OS_PRIx"\n", SCB->DFSR);
-    printf(" AFSR  = %08"OS_PRIx"\n", SCB->AFSR);
+    printf(" HFSR  = %08"OS_PRIx"\n", hfsr);
+    printf(" DFSR  = %08"OS_PRIx"\n", dfsr);
+    printf(" AFSR  = %08"OS_PRIx"\n", afsr);
     if(cfsr & 0x0080){
         printf(" MMFAR = %08"OS_PRIx"\n", mem_manage_fault_address);
     }