TM4C129EXL Firmware update over Ethernet

Hello Daniel,

The ROM Bootloader and the Flash Bootloader (in the folder ./bootloader) uses BOOTP for IP address management and TFTP for file transfer. If you want to use these bootloaders as is, then your application should be able to act as BOOTP server and TFTP server.

The example "./examples/boards/dk-tm4c129x/boot-emac-flash", configures the bootlaoder code in "./bootloader" to work over Ethernet. The applciations that work with this bootlaoder are "./examples/boards/dk-tm4c129x/boot_demo_emac_flash" and "./examples/boards/dk-tm4c129x/boot_demo_flash". You can use "LM Flash Programmer" to test the workflow.

With ROM Bootloader, any application, that is programmed to run with JTAG can be used. There is no need to modify the Linker Script. The entry into ROM Bootlaoder can be managed by using the BOOTCFG register, or my erasing the flash.

Thanks,
Sai

Hello,

Thank you for your reply. 

1. boot-emac-flash\target_config.ccxml is targeted to TM4C129ENCPDT. As I uploaded this binary with CCS and restarted the uC, I could use the LM Flash Programmer to upload any bin to the target. This part seems fine.
2. The other 2 examples should be modified to work with EK-TM4C129X instead of DK-TM4C129X am I right? Seems so because there is no LCD display on the EK board. What modification should I make? When I change the CCS General -> Variant to TM4C129ENCPDT I got many errors. 

How to go on?

Dont you have any guide like processors.wiki.ti.com/.../TI-RTOS_USB_DFU but for the Ethernet?

Hello Daniel,

The wiki you pointed to only shows the steps on how to program a Bootloader and then the application (using the bootloader). From your earlier post, I believe that you got the process right.

If you are using the EK-TM4C129EXL or EK-TM4C1294XL boards, then you are right - the examples "./examples/boards/dk-tm4c129x/boot_demo_emac_flash" and "./examples/boards/dk-tm4c129x/boot_demo_flash" should be ported to the board you are using.

For porting, the best thing to do is
* Copy these examples to the folder of the board you are using
* Remove LCD related code
* In the project settings, select the appropriate device and modify the definition *PART_XXXX" accordingly

After this, I believe the changes should be pretty minimal.

Thanks,
Sai

Hello Daniel,

The examples "./examples/boards/dk-tm4c129x/boot_demo_emac_flash" and "./examples/boards/dk-tm4c129x/boot_demo_flash" already modifies the vector table location. You should not be updating them unless you want to move them to a different location from what the application already does.

Also as a reminder, these application only work with the example "./examples/boards/dk-tm4c129x/boot_emac_flash".

Thanks,
Sai

I read a post about that boot_emac_flash in the dk folder can work out of the box on ek. Cn you confirm that?
well the only thing to do is to port any of boot_demo_flah to ek.
thank you

Hello,

I could make it work. Thank you very much for your help and support.

Hello Daniel

I think your original post mentioned that you do not want to use LFlashProgrammer but a light weight utility

Regards
Amit

Hello,

Thank you to remaind me that I have to manage somehow the upload process too.  How can can i do that? is there any open library for this purpose?

Thank you! works as expected!

Hello Daniel,

You are welcome

Regards
Amit

Daniel,

Glad that I could be of help!

Thanks,
Sai