ADC 400F Manual descarregar pdf (Página 18)

Chapter 2. Setting up the software

Modify it so that it reads:

Objects=Skeleton.o MyEventSegment.o

Save this edit, exit the editor and type:

make

This will attempt to compile your readout software into an executable program called Readout. If the

make command fails, ﬁx the compilation errors indicated by it and retry until you get an error free

compilation.

2.1.4. Testing the Readout Software

The Reaedout program must run on a system that is physically connected to the VME crate containing

your digitizers. Note that the ReadoutShell tool can be used to wrap your program with a Graphical user

interface (GUI), and run it on the requested remote system. While debugging your software we do not

recommend this. It’s better just to run the software from the command line, or under control of the gdb

symbolic debugger (see man gdb for more information about this extremely powerful debugging tool).

In this section we’ll show how to use the command line to

• Start up a very simple low level event dumping program.

• Start your Readout program, start a run, stop a run and exit.

• Interpret the event dumps created while the run is active

There are two buffer dumping programs that are now available to support the NSCL Data acquisition

system. Unfortunately, both are called bufdump and can only be distinguished by where they are

installed.

/usr/opt/daq/current/bufdump

Dumps the front segments of buffers in real-time. This is the program we will use for our initial

testing.

/usr/opt/utilities/current/bin/bufdump

Provides formatted dumps of complete buffers. Each buffer must be individually requested from the

data taking system, or an ofﬂine ﬁle. This program has extensive online and ofﬂine help and may be

very useful and powerful to detect and debug problems with more complex event structures than our

example, but is overkill for this application. A web based manual for this program is available at

http://docs.nscl.msu.edu/daq/bufdump/. A PDF printable manual is available at

http://docs.nscl.msu.edu/daq/bufdump/manual.pdf. The program’s help menu also has very

complete documentation.

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ADC 400F Manual Página 18