Add intermediate buffer mode (TANGODEVIC-1543)

src/adlink/ADContinuousAIBoard.cpp

@@ -834,10 +834,15 @@ asl::AIRawData* ADContinuousAIBoard::ai_trigger_event_callback (void* arg)
               << std::endl;
 
     if (this->ai_config_.num_trigger_sequences() && // finite mode
-        this->ai_config_.num_intermediate_trigger() && // intermediate mode properly configured
-        (trig_cnt%this->ai_config_.num_intermediate_trigger()))  // trigger number multiple of intermediate buffer nber
+        this->ai_config_.num_intermediate_trigger()) // intermediate mode properly configured
+    {
+      // we get buffer if:
+      // - num intermediate trig = 1 : get all buffers
+      // - or num intermediate trig > 1 and (trg - 1)%num interm trig = 0 : get only multiples
+      if ((this->ai_config_.num_trigger_sequences() == 1) ||
+          ((this->ai_config_.num_trigger_sequences() > 1) &&
+           !((trig_cnt - 1)%this->ai_config_.num_intermediate_trigger()))) // trigger number multiple of intermediate buffer nber
       {
-
         //- copy data from daq buffer to user buffer
         asl::AIRawData * raw_data = new asl::AIRawData(*data_src);
         if (raw_data == 0) {
@@ -853,6 +858,12 @@ asl::AIRawData* ADContinuousAIBoard::ai_trigger_event_callback (void* arg)
         // do nothing
         return NULL;
       }
+    }
+    else
+    {
+      // do nothing
+      return NULL;
+    }
 
 #else // _SIMULATION_