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178Re: [TMS470_ARM] Re: Use J-link to download gcc compiled code?

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  • JohnStosh
    Feb 20, 2008
      You might use a raw-binary file and then get IAR to burn it.
      You would create a project with a dummy executable to provide the .sim file which iar needs.
      The dummy project would have an assembly file with an empty .text section.
      The raw-binary file would be handed to the IAR tools and you would tell IAR that it contains a .text section.
      The configuration of the project would need to specify the jlink programmer.
      You'd also probably need a macro file or something to configure the TMS470's address space.
      I have 9/10ths of this working today, after receiving an email from IAR tech support.  I hope to get the final pieces working tomorrow.

      ----- Original Message ----
      From: john <j_w_myers@...>
      To: TMS470_ARM@yahoogroups.com
      Sent: Tuesday, February 19, 2008 1:11:33 AM
      Subject: [TMS470_ARM] Re: Use J-link to download gcc compiled code?

      Swapping the ELF file might work for debugging (I haven't tried it
      It looks like to actually program the flash you need IAR's debug
      output file [ .dxx ] and IAR's simple binary format [ .sim ] which
      allows you to use their flash loader to program the flash. The flash
      loader is a RAM resident program that downloads the code but to use
      IAR's I would need to convert the output from GCC to the two formats
      used by IAR.
      I haven't found any simple solutions yet. I think using the jlink-GDB
      server to download
      A flash loader to RAM would work but then I would either need to know
      the USB/JLINK interface or have the flash loader download from the
      UART. I haven't looked in to it yet but OpenOCD looks like it has
      potential since there is supposed to be a patch so the JLINK works
      with it.

      --- In TMS470_ARM@yahoogro ups.com, "johnstosh" <johnstosh@. ..> wrote:
      > You might be able to, but I wouldn't hold your breath. I'm VERY
      > interested in hearing what you find out. Have you considered
      > IAR to generate a binary file format and then "swapping in" you gcc
      > created data in place of the original?
      > I think IAR will do ELF format. Does gcc? Even if it does, is it
      > SAME elf format and a close enough varient to actually work?
      > Although IAR will generate a 2nd output file from the linker, will
      > only burn its primary output file?
      > --- In TMS470_ARM@yahoogro ups.com, "john" <j_w_myers@> wrote:
      > >
      > >
      > >
      > > I have the TMS470 KickStart kit.
      > > I want to start programming with gcc.
      > > Is it possible to use the J-link to download a program compiled
      > > gcc to the TMS470?
      > >

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