Configuring Matlab Coder, Eclipse IDE and CodeSourcery for Beagleboard development

28 May 2012

15:56

The process of setting up Matlab Coder and Eclipse for BealgeBoard development is similar to the setting up process for host PC (win7), except we need to create an ARM Windows Sourcery GCC project in Eclipse, rather than a Cygwin GCC project.

 

In this tutorial, we have a m file (getRand.m) in MATLAB to generate a normal distributed random number with mean of 10 and variance of 2. We generate C codes from the m file (getRand.m) by using the MATLAB coder.  Then we integrate these C codes into an Eclipse ARM cross target application project in Eclipse, buid the Beagle-compatible execute file by the CodeSourcery cross-compiler and finally run the executable file at Beagleboard remotely.

1. Generating C Code Using MATLAB Coder

Same as 'Generating C Code Using MATLAB Coder' in 'Configuring Matlab Coder, Eclipse IDE and Cygwin GCC for host PC'

2. Create a C project (ARM Cross Target Application) in Eclipse.

 

(2.1) Create a C project

Sine the final executable file is for the embedded target system (here, the Beagleboard), we need an ARM Cross Target Application C/C++ project . Select File > New > C project, a 'C Project' dialog opens. Select 'ARM Cross Target Application' and toolchain ARM  Windows GCC (Sourcery G++ Lite). Note that, in order to have the option of 'ARM Cross Target Application'  in the project type list, an ARM plugin is required. See xxx

Machine generated alternative text: Project type: - ARM Cross Target Application • Empty Project ARM Cross Target Static Library Executable c± Shared Library Oz, Statir I ihraru E?1 Show project types and toolchains only if they are supported on the platform <Back Ne> Finish Cancel J Project name: genRnd_m2Beagle Use default location Location: E:\Beagle\Eclipseworkspace\genRnd_m2ßeagle Choose file system: [default .rj Browse... Toolchains: ARM Windows CCC (GNUARM, WinARM) [ ARM Windows CCC (Sourcery C++ Lite) ARM Windows CCC (Summon) ARM Windows CCC (Yagarto) ARM Windows CCC (devkitPro)

 

 

(2.2) Integrate the C codes from Matlab into the Eclipse project

This is done by a link folder. The Link folder links to the folder <matlabprojectroot>\codegen\lib\<matlabprojectname> where the C codes generated by the Matlab Coder are stored.  There two ways to add a source folder into the project:

 

Approach 1:  Add the folder of the generated C codes into the Eclipse project's build path. This is done by right-click project -> Properties -> C/C++ General -> Paths and Symbols, select 'Source Location' tab. Click 'Link Folder' to add the source files into the Eclipse project.

Machine generated alternative text: J Properties for coderand2 L 2 j’ type filter text Paths and Symbols w w V Resource Linked Resources Resource Filters Configuration: Debug [Active] lE [Manage Configurations...] Builders C/C++ Build C/C++ General [Includes [ # Symbols a Libraries [Library Paths š eLocationi References Code Analysis Source folders on build path: [Add Folder...] Code Style ___________ j [ /coderand2 [Link Folder...] Documentation I I I I /coderand2/Frommatlabcoder ____________ File Types I I I Indexer J New Folder ___________ Language Mappings [ Delete ] Paths and Symbols Folder name: Frommatlabcode Project References Run/Debug Settings [__«Advanced__[ Task Repository Ru Link to folder in the file system WikiText E:\Beagle\Test\MatlabCoder\helloworl d\codegen\exe\coderand [ Browse... ] [ Variables... [ Choose file system: [default w] Location E:\Beagle\Test\MatlabCoder\helloworld\cod...r resource. This can cause unexpected side-effects. OK Cancel [ 1 LRestore Defayj [ Apply ] LE OK JE] j Cancel [

 

Once set add the source folders into the build path, It is worth setting file 'filter' to add only the *.c/*.h files into the project by excluding other files, like *.bat, *.prj

 

 

3. Configure the ARM Cross Target Application project for Beagleboard

See the configuration at  XX

 

4. Build the project

Select Project > Build All. Then you will get the ARM executable file projName.elf.

 

Possible compiling errors  and trouble shooting:

(1) target pattern contains no `%' STOP 

This is due to Cygwin's new make.exe (3.82) does not recognise the windows path separated by '\'. Rollback to make 3.80 (Geant4) by following commands in Cygwin command window:

  • cd /usr/bin
  • mv make.exe make_381.exe
  • chmod +x make.exe

You may also need to install libintl2 package from cygwin setup for the required cygintl-2.dll

(2) "math.h" and "undefined reference to ..."

You can get "undefined reference to ..." error while you're trying to use math.h functions such as (log, logf, exp...), although the "math.h" library has been included in your code. The reason behind that is these functions being not implemented in libc. Thus, you have to compile your code with "-lm" parameter. For instance:

 

arm-none-linux-gnueabi-gcc -lm -Wall -pedantic -ansi -o foo foo.c

 

In Eclipse, add the flag "-lm" at Project Properties > C/C++ Build > Settings, in the Tool Settings tab, select ARM Sourcery Windows GCC Linker > Miscellaneous. In the dialog box 'Linker flags', click the icon '+' at the top right comer to add the flag "-lm".

 

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5. Run the programme at Beagle remotely

We need to create a Run Configuration for running programme remotely.  Select Run > Run Configurations, a new windows opens. In the left panel, right click 'C/C++ Remote Application' and select new,

Machine generated alternative text: 3 Run Configurations Create, manage, and run configurations — t Filter matched 10 of 19 items Configure launch settings from this dialog: J [5 - Press the New button to create a configuration of the selected type. - Press the Duplicate button to copy the selected configuration. s the Delete button to remove the selected configuration. s the Filter button to configure filtering options. - tui or view an existing configuration by selecting it. Configure launch perspective settings from the PersQectives preference page. [ Run [[ Close j I type filter text C/C++ Application C/C++ Remote APPIir BeagleCOM2 Deb’ L • Eclipse Application Duplicate Java Applet Delete Java Application Ju Junit .1t JUnit Plug-in Test Launch Croup • OSGi Framework

 

Enter the name of the run configuration, for example, genRnd_m2Beagle_RemoteRun.

Select the connection, e.g., Beagleboard_via_IP. More details on setting up the IP connection to Beagleboard, please see

Select the project to the project we want to run at Beagle, e.g., genRnd_m2Beagle

In 'C/C++ Application' box, click 'Browse' button to select the executable file from the project (local location), e.g.,

E:\Beagle\Eclipseworkspace\genRnd_m2Beagle\Debug\genRnd_m2Beagle.elf

 

In 'Remote Absolute File Path for C/C++ Application', we need to specify which executable file at remote location (Beagleboard) we want to run.  Click 'Browse' button, the 'Select Remote C/C++ Application File' dialog box opens. Select the connection for Beagleboard, if the connection is valid, when you click and expand 'MyHome' tree, you will see the files at the Beagle. Usually, we prefer to create a new subfolder at Home directory to maintain the files. Right click 'MyHome', select 'New', and  enter the name of the folder, e.g., genRnd_m2Beagle. Click Finish.

 

As the default output file of the build process is <ElcipseProjectName>.elf, add the executable file at the end of the remote location. The 'Remote Absolute File Path for C/C++ Application' now is

/root/genRnd_m2Beagle/genRnd_m2Beagle.elf

 

In the 'Commands to execute before application' enter the following command:

chmod +x genRnd_m2Beagle.elf

This is to make the *.elf file execuatble.

Machine generated alternative text: 3RunConflgurations — — — - — — — .—.- ‘Lit Create, manage, and run configurations pe filter text C/C++ Application C/C++ Remote Application genRnd_m2Beagle Debug • Eclipse Application Java Applet rn Java Application Ju JUnit i JUnit Plug-in Test b Launch Group * OSGi Framework 3 Select Remote C/C++ Application File Select a file Connection: [Beagleboard_viaJP My Home ) My Home BeagleCOM BeagleCOM2 ,i a.out ,1 BeagleCOM.elf ,i BeagleCOM2.elf Debug Select configuration using ‘C/C++ Application’ [ Browse_ ] ri2Beagle.elf E:\genRnd_m2Beagle.elf ? Listing nd_m2Beagle .elf > “genRnd_m2Beagle.lst” Name: genRnd_m2Beagle Debug Main *.A.guments]_fl Common Connection: [gleboard_viaJP Project: genRnd_m2Beagle Build configuration: New... Properties... J [ Browse... ] C/C++ Application: E:\Beagle\Eclipseworkspace\genRnd_m2Beagle\Debug\genRnd_m2Be [Search Project... [[ Browse... V. Remote Absolute File Path for C/C++ Application: /root/genRnd_m2Beagle/genRnd_m2Beagle.elf Commands to execute before application chmod +x genRnd_m2Beagle.elf LI Skip download to tarqet path. 3 New Folder H Remote Folder Create a New Folder — Connection name: Beagleboard_viaJP Parent folder /root New folder name: genRnd_m2Beagle OK Can [ Apply jj Revert [ Run ][ Close ] © Finish [ Cancel ] ‘1tYSLhT na!

 

Click 'Apply' and then 'Run' to run the programme remotely at Beagle. At the Console window, you will see the output results of the programme.

 

Machine generated alternative text: Problems tTasks Console Properties J Git Repositories History. Error Log Problem Details genRnd_m2ßeagle Debug [C/C÷ + Remote Application] E:\Beagle\Eclipseworkspace\genRnd...m2Beagle\Debug\genRnd_m2Beagle.elf (31/10/2012 ] ____________ __ Last login: Fri Jan 27 19:59:07 2012 from 10.2.1.1 echo $PWD’>’ chmod +x genRnd_m2Beagle.elf;/root/genRnd_m2Beagle/genRnd_m2Beagle.elf;exit root@omap : echo $PWD’>’ I/root> root@omap : root@omap:’# chmod +x genRnd_m2Beagle.elf;/root/genRnd_m2Beagle/genRnd_m2Beagle. elf;ex chmod: cannot access genRnd_m2Beagle.elf’: No such file or directory Start mainQ... exp(1. eeeeee)=2. 718282 getRnd=11 .075334 getRnd=13 .667770 get Rnd=5 .482386 get Rnd=11.724347 get Rnd=1e.637538 get Rnd=7. 384623 get Rnd=9.132816 get Rnd=10.685249 getRnd=17.156794

 

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