diff --git a/applications/main.c b/applications/main.c
index 5da0c08..be4df8c 100644
--- a/applications/main.c
+++ b/applications/main.c
@@ -176,8 +176,9 @@ uint16_t Get_Stable_Reading(uint8_t cnt, uint32_t timeout_ms)
     while ((rt_tick_get() - start) < timeout_ms)
     {
         current = Get_Gas_VoltageAdcInt1000x();
-
-        uint16_t diff = fabs(current - last); // 差值
+        
+        uint16_t diff = abs(current - last); // 差值
+        
         if (diff < STABLE_THRESHOLD)
         {
             stable_count++;
@@ -288,16 +289,17 @@ int APP_Calibration_Handle(void)
     }
     else
     {
-        calibration_buf[0] = gas_calibration_voltage & 0xFF;        // 低字节
-        calibration_buf[1] = (gas_calibration_voltage >> 8) & 0xFF; // 高字节
+        calibration_buf[0] = (gas_calibration_voltage & 0xFF);        // 低字节
+        calibration_buf[1] = ((gas_calibration_voltage >> 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);
         LOG_D("标定完成");
         Calibration_flag = 0;
         Flash_Set_Calibration_State(kSysGasCalibStatus);
         g_Calibration_status = kSysGasCalibStatus;
+
         Send_Laser_Alarm_Event(kNormalDetectionEvents);
-        return 0;
+        return RT_EOK;
     }
 
 #endif