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Original question:

DM81xx - Debug Arm & Dsp

CCS/AM5728: DSP debug issue

Suresh G F
Prodigy 20 points
Part Number: AM5728

Tool/software: Code Composer Studio

Our application requires DSP & ARM cores. Hence, in the past OMAP L-138 was used which posed ARM issues (ARM goes to Unknown state) while debugging DSP in RTOS (integrity) environment. Some work around was done at system level then to overcome the same.

Now, we are upgrading the hardware hence AM5728 is being considered. But, will the same issue persist in Sitara series too ? (Local, Bangalore, TI sales team is unable to provide us clarity about the same). If so, then recommended will be separate ARM and DSP processors? If yes suggest 1 Single/Dual core ARM core processor and 1 dual core DSP processor with possible interface between them.

  • 0
    TI__Guru**** 393215 points
    The RTOS team have been notified. They will respond here.
  • 0 in reply to Biser Gatchev-XID
    TI__Guru* 95265 points
    Hi,

    I don't understand what was the issue in your OMAP-L13x processor. The AM5728 Sitara is a new family of processor with ARM+DSP. The datasheet is www.ti.com/.../AM5728 Errata: www.ti.com/.../sprz429l.pdf.

    We have IPC support: software-dl.ti.com/.../FAQ.html for communication between ARM and DSP.

    Regards, Eric
  • 0 in reply to lding
    Prodigy 20 points

    Hi Eric,

    With OMAP L138, we had an issue during debug.

    Requirement is: ARM is running with it's code and DSP core is being in debug mode with it's code. While connected DSP for Debug, AMR resets but fails to come to known state. Instead ARM throws up error with "Unknown state" and stops. So, unable to Debug the DSP code.

    After discussion with TI, Bangalore sales team and Forums, we are of the opinion that in OMAP series (& Sitara series too) DSP debug with ARM running is not possible in Integrity RTOS. Can you confirm so? OR is we are missing something here?

  • 0 in reply to Suresh G F
    TI__Guru* 95265 points
    Hi,

    Do you use CCS/JTAG to debug? Do ARM and DSP run separate programs independent of each other? Why the ARM got reset when you debug the DSP core?

    I didn't use OMAP but I used the Sitara AM5728 which has ARM and DSP, typically ARM runs Linux and downloads a program to DSP and run it, I have no issue to debug DSP while ARM is running.

    Regards, Eric