Added signal detection

Com_server/test/TestDroneRemoteControl.cpp

@@ -267,7 +267,36 @@ drone1.command_setMode(DRONE_OFF);
 //     drone1.get()->write_message(message);
 // }
 
-
+/**
+ * @fn void signalHandler(int number)
+ * @brief Handles received signals. Triggered when a signal is received.
+ *
+ * @param number The signal code.
+ **/
+void signalHandler(int number) 
+{
+   switch(number) 
+   {
+   case SIGINT :
+      printf("SIGINT caught\n"); //CTRL+C 
+      //TODO handle SIGINT reception situation
+      break;
+
+   case SIGTERM :
+      printf("SIGTERM caught\n"); //kill (term command)
+      //TODO handle SIGTERM reception situation
+      break;
+
+   case SIGFPE :
+      printf("SIGFPE caught\n"); //Floating-Point arithmetic Exception
+      //TODO handle SIGFPE reception situation
+      exit(0); //to prevent infinite loop
+      break;
+
+   default :
+      printf("Signal number : %d caught\n", number);
+   }
+}
 
 /**
  * Only the main exe of the programm
@@ -278,8 +307,18 @@ int main(int argc, char *argv[])
     // General var
   //  bool flag_run = true; //Flag use for the main loop of the system
 
+   struct sigaction action;
    if(argc>1)  {strcpy(device_path ,argv[1]); printf("port = %s \n",device_path);}
    
+   //signal handler initialisation
+   sigfillset(&action.sa_mask);
+   action.sa_handler = signalHandler;
+   action.sa_flags = 0;
+
+   //Make the list of all SIG to catch (will not be caught if not listed here, the list is not definitive and all are not necessarily usefull)
+   if(sigaction(SIGINT, &action, NULL) != 0) printf("SIGINT couldn't be attached\n"); //ctrl+C
+   if(sigaction(SIGTERM, &action, NULL) != 0) printf("SIGTERM couldn't be attached\n"); //kill [PID]
+   if(sigaction(SIGFPE, &action, NULL) != 0) printf("SIGFPE couldn't be attached\n"); //integer divided by 0
    drone1.open(device_path, device_baudrate);
 
     string buffer1="";