FDA-98

Improved (standalone) main method to also support stopping the data
acquisition

ch.psi.fdaq/Readme.md

@@ -3,15 +3,21 @@ This software is used to readout the FDAQ box developed at X10SA.
 On The FDAQ box there are 2 socket servers, one for retrieving the data and one for resetting the socket 
 server for data retrieval.
 
-The fdaq code provides exactly 2 to functionalities, it can query on the data socket for data (specifying how many data point)
-and can send a reset request on the reset channel.
+The fdaq code provides exactly 2 functionalities. It can query on the data socket for data (need to specifying how many data point to read),
+and it can send a reset request on the reset channel.
 
 # Usage
 
 To acquire data into a file use:
 
 ```
-fdaq <file>
+fdaq acquire <file>
+```
+
+Send stop/reset request (to abort an data collection)
+
+```
+fdaq stop
 ```
 
 This will take the default connections settings: 

ch.psi.fdaq/src/main/java/ch/psi/fdaq/FdaqMain.java

@@ -26,26 +26,42 @@ import ch.psi.fda.serializer.SerializerTXT;
 import com.google.common.eventbus.AsyncEventBus;
 import com.google.common.eventbus.EventBus;
 
-/**
- * 
- */
 public class FdaqMain {
 
 	public static void main(String[] args) {
 		
-		if(args.length != 1){
-			System.err.println("Usage: fdaq <file>");
+		if(args.length < 1 || args.length >2){
+			System.err.println("Usage:\n fdaq acquire <file>\n fdaq stop");
+			System.exit(-1);
 		}
 		
-		File file = new File(args[0]);
+		boolean acquire = false;
+		File file = null;
+		if(args[0].equals("acquire")){
+			acquire = true;
+			file = new File(args[1]);
+		}
+		else if(args[0].equals("stop")){
+		}
+		else{
+			System.err.println("Usage:\n fdaq acquire <file>\n fdaq stop");
+			System.exit(-1);
+		}
+		
+		
 		
 		EventBus bus = new AsyncEventBus(Executors.newSingleThreadExecutor());
 		FdaqService fdaq = new FdaqService(bus);
-		
-		SerializerTXT serializer = new SerializerTXT(file);
-		bus.register(serializer);
-		
-		fdaq.acquire();
+
+		if(acquire){
+			SerializerTXT serializer = new SerializerTXT(file);
+			bus.register(serializer);
+			
+			fdaq.acquire();
+		}
+		else{
+			fdaq.stop();
+		}
 	}
 
 }