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creating output section "SFRA_F_Data" without a SECTIONS specification ??

Leonardo Callegaro
Expert 1605 points
Other Parts Discussed in Thread: SFRA

Hi, 

I am trying to run the SFRA tool in open loop on a converter. When I build the project I get these 2x warnings:

anyone can help me to understand what they mean?

thank you

Leo

  • 0
    TI__Guru 61235 points
    The errors are from the linker. The specified sections are not cited in your linker .cmd file, SECTIONS section, so the linker does not know where you want It to put them. So, the linker allocates these sections into memory using a default allocation algorithm (basically, it sticks the sections in the first memory it can find that they fit in).

    This is not a good warning to ignor. You need to add these sections to your linker .cmd file, SECTIONS section.

    Regards,
    David
  • 0 in reply to David M. Alter
    Expert 1605 points

    thank you David, very useful.

    I have added the lines you have suggested into the file "2837xD_RAM_lnk_cpu1.cmd" and I got rid of the 2x warnings. I can now see the SFRA tool doing its job, by perturbing the duty cycle, around a steady state duty of 0.5 which I have setup (I am performing open loop, i.e. without compensator, measuerements at this stage).

    Here are the lines I have added in the SECTIONS part of the "2837xD_RAM_lnk_cpu1.cmd", I have copied them from another project running for 28377D (C:\ti\controlSUITE\development_kits\HV_1PH_DCAC\v1_02_00_00\f2837x\voltagesourceinvlcfltr)

    I also attach a MS word copy of the 2837xD_RAM_lnk_cpu1.cmd file content. Please let me know if my procedure is lacking something.

    Thank you so much,

    Leocopy of 2837xD_RAM_Ink_cpu1.cmd.docx