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CCS/AM5728: debugging PRU with CodeComposer Studio

Annette Kratz
Prodigy 210 points
Part Number: AM5728
Other Parts Discussed in Thread: CODECOMPOSER

Tool/software: Code Composer Studio

I am using CCS 8.2. It was possible to compile and download the PRU code (I think) but I can´t see any variable values.  the error message is: "memory map prevented reading 0x000100EE@Data_Memory"

Is this how it is supposed to be?

  • 0
    TI__Expert 4570 points

    Looks like the shared PRUSS_DATA_RAM2 is mapped into the I/O space of the PRU.

        GEL_MapAdd(0x00010000,2,0x8000,1,1);            /* Shared RAM   */

    That's probably not ok. Could you change that line in file 'AM57xx_PRU_ICSS_local.gel' to

        GEL_MapAdd(0x00010000,1,0x8000,1,1);            /* Shared RAM   */

    and check if that fixes your problem?

  • 0 in reply to Manfred Becker
    TI__Guru**** 171309 points

    Hi,

    I don't see this issue. Check below with some variables defined in the local RAM and others in the Shared Memory.

    What do you see if you select the menu Tools --> Memory Map? If the memory map is correctly set, it should match the bottom right corner of my screen.

    I send attached the project I am using, where I declare near and far global variables both at Data and I/O memory pages. See if you can get the same results as I.

    Hope this helps,

    Rafael

    1374.AM3359_PRU_debug.zip

  • 0 in reply to desouza
    Prodigy 210 points

    I don´t see the problem anymore. I don´t even know how it got solved. The debug process is kind of unstable. It seems it requires different steps to take whenever I start the CodeComposer.  It is possible I was not even connected to the PRU, or not correctly connected, when it happend.