C8051F120中断服务程序忽然全部失灵，请高手帮助分析原因

int application_start(void)

{

  app_log_trace();

  OSStatus err = kNoErr;

  app_context_t* app_context;

  mico_Context_t* mico_context;

  LinkStatusTypeDef wifi_link_status;



  /* Create application context */

  app_context = ( app_context_t *)calloc(1, sizeof(app_context_t) );

  require_action( app_context, exit, err = kNoMemoryErr );



  /* Create mico system context and read application's config data from flash */

  mico_context = mico_system_context_init( sizeof( application_config_t) );

  require_action(mico_context, exit, err = kNoResourcesErr);

  app_context->appConfig = mico_system_context_get_user_data( mico_context );

  app_context->mico_context = mico_context;

  app_context_global = app_context;



  /* user params restore check */

  if(app_context->appConfig->configDataVer != CONFIGURATION_VERSION){

    err = mico_system_context_restore(mico_context);

    require_noerr( err, exit );

  }



  /* mico system initialize */

  err = mico_system_init( mico_context );

  require_noerr( err, exit );

  MicoSysLed(true);



  // fix for AP down problem

  err = mico_system_notify_register( mico_notify_WIFI_CONNECT_FAILED, (void *)appNotify_ConnectFailedHandler, app_context->mico_context );

  require_noerr_action(err, exit, app_log("ERROR: MICOAddNotification (mico_notify_WIFI_CONNECT_FAILED) failed!") );



  // block here if no wifi configuration.

  while(1){

    if( mico_context->flashContentInRam.micoSystemConfig.configured == wLanUnConfigured ||

       mico_context->flashContentInRam.micoSystemConfig.configured == unConfigured){

         mico_thread_msleep(100);

       }

    else{

      break;

    }

  }



  /* Bonjour for service searching */

  MICOStartBonjourService( Station, app_context );



  /* check wifi link status */

  do{

    err = micoWlanGetLinkStatus(&wifi_link_status);

    if(kNoErr != err){

      mico_thread_sleep(1);

    }

  }while(kNoErr != err);



  if(1 ==  wifi_link_status.is_connected){

    app_context->appStatus.isWifiConnected = true;

    MicoRfLed(true);

  }

  else{

    app_context->appStatus.isWifiConnected = false;

    MicoRfLed(false);

  }



  /* start cloud service */

#if (MICO_CLOUD_TYPE == CLOUD_FOGCLOUD)

  app_log("MICO CloudService: FogCloud.");

  err = MiCOStartFogCloudService( app_context );

  require_noerr_action( err, exit, app_log("ERROR: Unable to start FogCloud service.") );

#elif (MICO_CLOUD_TYPE == CLOUD_ALINK)

  app_log("MICO CloudService: Alink.");

#elif (MICO_CLOUD_TYPE == CLOUD_DISABLED)

  app_log("MICO CloudService: disabled.");

#else

  #error "MICO cloud service type is not defined"

#endif



  /* start user thread */

  err = startUserMainThread( app_context );

  require_noerr_action( err, exit, app_log("ERROR: start user_main thread failed!") );



exit:

  mico_rtos_delete_thread(NULL);

  return err;

}