add console message when prenting metrics in RRC_IDLE

srsue/hdr/metrics_stdout.h

@@ -48,6 +48,7 @@ public:
 
   void toggle_print(bool b);
   void set_metrics(ue_metrics_t &m, float report_period_secs);
+  void set_ue_handle(ue_metrics_interface *ue_);
 
 private:
   std::string float_to_string(float f, int digits);
@@ -56,6 +57,7 @@ private:
 
   bool                  do_print;
   uint8_t               n_reports;
+  ue_metrics_interface* ue;
 };
 
 } // namespace srsue

srsue/hdr/ue_metrics_interface.h

@@ -57,6 +57,7 @@ class ue_metrics_interface : public srslte::metrics_interface<ue_metrics_t>
 {
 public:
   virtual bool get_metrics(ue_metrics_t &m) = 0;
+  virtual bool is_attached() = 0;
 };
 
 } // namespace srsue

srsue/src/main.cc

@@ -366,6 +366,7 @@ int main(int argc, char *argv[])
 
   metricshub.init(ue, args.expert.metrics_period_secs);
   metricshub.add_listener(&metrics_screen);
+  metrics_screen.set_ue_handle(ue);
 
   pthread_t input;
   pthread_create(&input, NULL, &input_loop, &args);

srsue/src/metrics_stdout.cc

@@ -50,9 +50,15 @@ char const * const prefixes[2][9] =
 metrics_stdout::metrics_stdout()
     :do_print(false)
     ,n_reports(10)
+    ,ue(NULL)
 {
 }
 
+void metrics_stdout::set_ue_handle(ue_metrics_interface *ue_)
+{
+  ue = ue_;
+}
+
 void metrics_stdout::toggle_print(bool b)
 {
   do_print = b;
@@ -61,9 +67,14 @@ void metrics_stdout::toggle_print(bool b)
 
 void metrics_stdout::set_metrics(ue_metrics_t &metrics, float metrics_report_period)
 {
-  if(!do_print)
+  if(!do_print || ue == NULL)
     return;
 
+  if (!ue->is_attached()) {
+    cout << "--- disconnected ---" << endl;
+    return;
+  }
+
   if(++n_reports > 10)
   {
     n_reports = 0;

srsue/src/ue.cc

@@ -247,7 +247,7 @@ void ue::stop()
 
 bool ue::is_attached()
 {
-  return (EMM_STATE_REGISTERED == nas.get_state());
+  return (RRC_STATE_CONNECTED == rrc.get_state());
 }
 
 void ue::start_plot() {