CCS/TMS320C2812: stack won't fit in hole in Lab examples in TTO's C28x DSP Design Workshop

Is there a reason why you are using CCS 3.3 and F2812?
With the newer tech being available, at very low cost, you may want to pick a different starting point?

For instance, F28377S has a low-priced Launchpad, and it will run circles around the F2812.
TI has moved from CCS 3.3 -> CCS4->CCS5->CCS6->CCS7, and now is at CCS 7.1

There is a resource available: processors.wiki.ti.com/.../C2000_Archived_Workshops

There is a workshop for F2812 - is that what you are referencing?

Yes - legacy products. I just started here & have inherited a whole load of TI DSP-based code,
all CCS 3v3 based – my new co have resisted going Eclipse for 10 years due to the pressure of being able to keep shipping bespoke product, and because of 3.3's reputation for work well.

Ken,

As I am sure you know, and as Todd as pointed out, you are using a very old device with a very early version of CCS.  In any case, I am guessing that you are trying to run the code from the F2812 multi-day workshop with DSP/BIOS.  When using the DSP/BIOS configuration tool, the stack size is specified in the CDB file, and not in the linker CMD file.  The CCS build options (linker tab) should not have an entry for the stack size.  For details, please see lab 2a and 2b in the workshop (revision 5.2, January 2005):

http://processors.wiki.ti.com/index.php/C2000_Archived_Workshops#F2812_Multi-Day_Workshop_-_Revision_5.2_January_2005_.28SD_eZdsp_F2812.3B_CCSv3.1.3B_DSP.2FBIOS_4.9.29

If possible, please be sure to use the same version of the tools that were used to create the workshop, then try running lab 2 completing each step and let me know if that works.

- Ken

Thanks for the link - I had all of the training material given to me, so I'll try using the labs & the .zips from the URL.

I tried editing the .cdb _ i reduced the stack size from 512 in line 1435 of lab.cdb, to 256 (I'm guessing that its in decimal but the linker states it in hex), & cleared the stack size in the linker tab of the project props. I still got the same error msg, even after a clean build.

Managed to set it (although not sure if lab2 will run with a stack half the size that it's meant to be!). Solution was to open the .tcf in the graphical editor, right click on MEM under System, open the Property/Value view, & then the stack size becomes editable. Editing the .cdb file was a bad idea as its generated from the .tcf on each build. Simple when you understand that!

Ken

The F2812 multi-day workshop was developed with CCSv3.1 and DSP/BIOS 4.9.  With DSP/BIOS 4.x the system modifications are made by opening and editing configuration database file (.cdb).  You can find the details starting in Lab 2b in that workshop.  This changed with DSP/BIOS 5.x, where the modifications are made by editing the text configuration file (.tcf).  You can find more details about using DSP/BIOS 5.x in the F28335 multi-day workshop in Lab 12.  (It might also help to review the module 12 materials, too).  This workshop can be found at:

http://processors.wiki.ti.com/index.php/C2000_Archived_Workshops#C2000_Delfino_Multi-Day_Workshop_-_Revision_8.1_November_2010_.28ExpKit_F28335.3B_CCSv4.2.3B_DSP.2FBIOS_5.41.29

The F28335 multi-day workshop was developed with CCSv3.3 and DSP/BIOS 5.41.  From your comments in the post, I am guessing that you are using DSP/BIOS 5.x, and hopefully this will explain why the F2812 multi-day workshop directions are not fully aligning to the version of DSP/BIOS that you are using.

- Ken

Ken,

Thanks for following up.  I will close the thread.

- Ken