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TM4C1294NCPDT: Flash firmware over ethernet

svl123
Intellectual 690 points
Part Number: TM4C1294NCPDT
Other Parts Discussed in Thread: EK-TM4C1294XL

Hello,

I am trying to flash my TM4C MCU over ethernet - I found this thread (e2e.ti.com/.../1306412) which has instructions on flashing the MCU firmware over ethernet for the DK-TM4C129 launchpad. I tried following these instructions on my EK-TM4C1294XL launchpad but do not get the expected results (no LEd's lighting up when loading the boot_emac_flash demo.)

My question is, is the procedure for flash programming over ethernet the same for the EK-TM4C1294XL launchpad as the DK? If not, where can I find instructions for doing this on my launchpad?

Thank you,
-svl123

  • 0
    TI__Guru*** 135355 points
    Hello svl123,

    Have you looked at the boot_demo_emac_flash example in TivaWare for your LaunchPad? I believe that does what you are looking for?
  • 0 in reply to Ralph Jacobi
    Intellectual 690 points

    I have looked at it, what exactly is this example supposed to do? How is it used? Do I load it onto the controller and then use LM flash programmer to flash the firmware over ethernet?

    Thank you,

    -svl123

  • 0 in reply to svl123
    TI__Guru*** 135355 points
    Hello svl123,

    I looked into the project in more detail. You will need to use the boot_emac_flash project to be the actual bootloader, and the boot_demo_emac_flash is the actual application meant to be loaded via Ethernet bootloader into the the TM4C. The boot_demo_emac_flash project description is intended to describe the process but the steps aren't too clear so this previous E2E post which concerned a DK board may help clarify some of what you need to do: e2e.ti.com/.../1319520
  • 0 in reply to Ralph Jacobi
    Intellectual 690 points

    Hi Ralph,

    Yes I have looked at that post and have follow the instructions detailed there. I am encountering two issues:

    1. When flashing the boot_emac_flash program I do not get any LED's lighting up like the instructions state.

    2. When attempting to load the boot_demo_emac_flash over ethernet the LM programmer gets stuck on "Attempting to connect" flashing does not work.

    I am using LM Flash programmer 1613 with an EK-TM4C1294XL launchpad. Since I am not able to even see the LED's that should come up when boot_emac_flash is loaded it makes me believe that the issue is not with the ethernet but rather something simple (perhaps the instructions for the DK launchpad do not work for the EK? Or maybe the code for the EK is different?)

    Thank you,

    svl123

  • 0 in reply to svl123
    TI__Guru*** 135355 points
    Hello svl123,

    We are looking into this. Myself and another engineer both tried with LaunchPads and got hung at the same point, and also tried with 1 DK board and had the same issue.