TM4C1294NCPDT: Flash firmware over ethernet

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

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

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

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.