Revision as of 05:06, 2 October 2009 by Dirk (Talk | contribs) (Build the example)

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This page is about using Eclipse IDE for BeagleBoard. It is focused on JTAG debugging with e.g. OpenOCD, but can be extended to additional topics, e.g. C/C++ development. And, while the examples focus on Beagle, stuff shown here will most probably easily apply to other boards.


Here, installation of Eclipse for C/C++ development and embedded GDB/JTAG debugging will be described. This is done in three steps:

Note: The file names and versions given here are based on October 2009. They may change.

Eclipse Classic

In October 2009 this was version 3.5.1. 32-bit Linux version download resulted in file eclipse-SDK-3.5.1-linux-gtk.tar.gz.

  • Installation is done by extracting downloaded (tar.gz) file (e.g. tar xvfz eclipse-SDK-3.5.1-linux-gtk.tar.gz).
  • Start Eclipse by calling
cd eclipse

You might want to add this to your path and/or add a start icon/shortcut on your desktop/start menue.

Starting Eclipse, you are asked for the directory where you want to have your workspace:

Eclipse 1.jpg

After doing this, Eclipse starts...

Eclipse 2.jpg

... and presents the start screen:

Eclipse 3.jpg


  • To install CDT, in Eclipse select
Help -> Install new software...
  • There, use

dialog and enter:

Note: Check CDT download page for up to date link.

Eclipse 4.jpg

Press, OK, select both CDT components ...

Eclipse 5.jpg

... and click Next, accept license agreement and Finish. Then download and installation of CDT and dependencies starts.

  • Wait until CDT installation finished. Then, you are asked to restart. Do this.

Zylin Embedded CDT

  • To install Zylin Embedded CDT, in Eclipse select
Help -> Install new software...
  • There, use

dialog and enter:

Note: Check Zylin Embedded CDT page for up to date link.

Eclipse 6.jpg

Press, OK, select Zylin Embedded CDT ...

Eclipse 7.jpg

... click Next and Finish. Accept message about unsigned components and restart Eclipse again.

CDT perspective

Now, everything is installed. We can switch to C/C++ mode now. For this:

  • Switch to "Workspace" (clicking Workspace button)
  • Make sure you are in C/C++ mode. In upper right corner, C/C++ perspective has to be enabled. If this isn't enabled (e.g. Java is enabled), do Window -> Open Perspective -> Other ... and select "C/C++":

Eclipse 8.jpg


To demonstrate usage an example is the best way. Here a small stand alone program is used. It is downloaded to BeagleBoard which is running U-Boot prompt and then debugged using OpenOCD JTAG debugger. So in this example we do:

  • Get a small stand alone program (LEDblink) from internet and create an Eclipse project with it
  • Start OpenOCD and configure Eclipse debug environment
  • Download build example and debug it

Example project

First, we download source code and control files for a small stand alone program we can run on BeagleBoard. For this, we use Magnus' LEDblink program. While Beagle is running at U-Boot prompt, this can be downloaded by OpenOCD JTAG to Beagle and let Beagle's LEDs blink.

Note: You need ARM cross compiler installed for this (e.g. CodeSourcerys' 2009q1-203 version, or newer).

Note: Depending on your tool chain, in Makefile edit "TYPE" variable

  • To be able to run Eclipse default configuration "make all" edit Makefile and add an "all" target. Result should look like
CFLAGS=-g -Os -c -mcpu=cortex-a8 -mfpu=neon -mfloat-abi=hard

all: LEDblink

LEDblink: LEDblink.o Makefile $(LDSCRIPT) crt0.o
  • After we have the source now, we can start a new Eclipse C project:
File -> New -> C Project

and there create a new empty Makefile project "LEDblink":

Eclipse 9.jpg

If you click finish now, you have created your first Eclipse project.

In this new project, we have to re-configure three configurations, now.

  • First, disable automatic build:
Disable checkbox before Project -> Build Automatically
  • Second, in Project menu select Properties:
Project -> Properties

There, in Builders configuration disable Scanner Configuration Builder

Eclipse 10.jpg

  • Third, still in Properties window, in
C/C++ Build -> Settings

enable GNU Elf Parser:

Eclipse 11.jpg

Now, basic configuration is done! But the new project is still empty. We have to import the four downloaded files into our project, now:

  • Import LEDblink files into the new project:
File -> Import...
  • Select
General -> File System

Eclipse 12.jpg

  • Then click next, browse to the directory where you downloaded the four LEDblink files and select them:

Eclipse 13.jpg

and finish.

Now, at the left side, in the Project view, you should see the four files. Double clicking them opens them in the editor. With LEDblink.c opened this should now look like:

Eclipse 14.jpg

Before we can now build (compile) our small nice example, let us clean up everything (and configure clean dialog):

  • Select
Project -> Clean ...

and configure it as given:

Eclipse 15.jpg

("Clean projects selected below", select LEDblink, and disable "Start a build immediately"). By pressing OK make clean from Makefile should be called (it might give some errors the first time, because nothing is to be cleaned).

  • Last step is to build the example.
Project -> Build project

should call make all resulting in LEDblink executable:

Eclipse 16.jpg

Next step is to debug this.




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