diff --git a/.vscode/settings.json b/.vscode/settings.json
index 13695b9..a8d666d 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -79,6 +79,8 @@
         "netdev_ipaddr.h": "c",
         "stdint.h": "c",
         "stdarg.h": "c",
-        "math.h": "c"
+        "math.h": "c",
+        "ctime": "c",
+        "bsp_wdg.h": "c"
     }
 }
diff --git a/applications/main.c b/applications/main.c
index 36cefa0..71c77e9 100644
--- a/applications/main.c
+++ b/applications/main.c
@@ -2,7 +2,7 @@
  * @Author: mbw
  * @Date: 2024-10-23 17:14:16
  * @LastEditors: mbw && 1600520629@qq.com
- * @LastEditTime: 2025-06-16 16:46:25
+ * @LastEditTime: 2025-06-16 17:55:45
  * @FilePath: \ble_bjq_ch303rct6_ml307\applications\main.c
  * @Descrt_thread_
  *
@@ -313,6 +313,25 @@ int main(void)
         LOG_D("工作时长：%d", work_duration);
         // 读取历史记录总数
         g_Calibration_status = Flash_Get_Calibration_State();
+
+        //这种方法，当纽扣电池没电，直接完蛋，但是5年应该能撑住
+        uint16_t dr3 = (BKP_ReadBackupRegister(BKP_DR3) & 0X0F);
+        if (dr3 != 0)//说明已经标定过 ,并且在掉电时被擦出了，重新写入标定数据
+        {
+            uint16_t dr2 = (BKP_ReadBackupRegister(BKP_DR2) & 0xFFFF);
+            uint8_t calibration_buf[2]  = {0};
+            
+            // 写入标定值
+            calibration_buf[0] = dr2 & 0xFF;        // 低字节
+            calibration_buf[1] = (dr2 >> 8) & 0xFF; // 高字节
+
+            LOG_D("calibration_buf[0] = %X calibration_buf[1] = %X", calibration_buf[0], calibration_buf[1]);
+            Flash_Sys_Cfg(kAlarmLValueId, calibration_buf, 2);
+            Flash_Set_Calibration_State(kSysGasCalibStatus);
+            BKP_WriteBackupRegister(BKP_DR3, 0);// 清除标志位
+
+        }
+        
         rt_thread_mdelay(10);
     }
     else
@@ -564,7 +583,13 @@ int main(void)
                     // 写入掉电记录
                     Flash_Write_Record(kRecordPowerDown);
                     rt_thread_delay(100);
-                    Flash_Set_WorkDuration(work_duration); // 写入工作时长
+                    if(Flash_Set_WorkDuration(work_duration) != RT_EOK) // 写入工作时长
+                    {
+                        LOG_E("写入工作时长失败");//到这里如果失败了，则必须将其写道后备区中，一般情况下这个函数进不来
+                        BKP_WriteBackupRegister(BKP_DR2, Sensor_device.alarm_value);
+                        BKP_WriteBackupRegister(BKP_DR3, 1);//失败标志量
+                    }
+
                     if (Flash_Get_Valve_Num())
                     {
                         rt_uint8_t mac_addr[6];
diff --git a/applications/user_sys.h b/applications/user_sys.h
index 40bf216..81eeb4a 100644
--- a/applications/user_sys.h
+++ b/applications/user_sys.h
@@ -37,6 +37,7 @@
 // #define SYS_IOT_URL              ("8.130.105.38")
 // #define SYS_IOT_PORT             ("7133")
 
+
 #define K                        (8 * 1000)
 
 // 定义宏来打印编译时间和日期
diff --git a/bsp/src/bsp_flash.c b/bsp/src/bsp_flash.c
index f3cc160..15f9e48 100644
--- a/bsp/src/bsp_flash.c
+++ b/bsp/src/bsp_flash.c
@@ -256,7 +256,6 @@ static rt_size_t Flash_Write(rt_uint32_t addr, rt_uint8_t *buf, rt_size_t len)
     }
 
     BSP_Flash_Lock();
-
     return i;
 }
 
@@ -286,7 +285,20 @@ int Flash_Set_WorkDuration(rt_uint16_t value)
 
     Flash_ErasePage_ReadConfigInfo(page_buf);
     rt_memcpy(page_buf + in_page_offset, &value, FLASH_WORK_TIME_LEN);
-    return Flash_Write_ConfigInfo(page_buf);
+    for (size_t i = 0; i < 3; i++)
+    {
+        if(Flash_Write_ConfigInfo(page_buf) != 0)//当写错时，重新写入
+        {
+            return  RT_EOK;
+        }
+        else
+        {
+            Flash_ErasePage_ConfigInfo();
+            rt_thread_delay(10);
+        }
+    }
+    
+    return RT_ERROR;
 }
 
 int Flash_Get_Sever_Data(flash_sever_info *sever_info)
@@ -893,6 +905,7 @@ int BSP_Flash_Init (void)
         Flash_Write (FLASH_INIT_FLAG_ADDR, flash_init_flag,
                      sizeof (flash_init_flag));
         Flash_Set_WorkDuration (work_duration);
+        
         LOG_D ("work_duration:%d", Flash_Get_WorkDuration());
 
         Convert_To_Hex (&sever_info, sever_data);