MCU-PLUS-SDK-AM263X: HTTP Webserver Question

Hi Chris,

The file you need to modify is "mcu_sdk_path/source/networking/lwip/lwip-stack/src/apps/http/fsdata.c"

This aforementioned file has the data that will be displayed in various cases such as:

1) data of index.html

2) data when HTTP return status is 404

3) Data of the sics_gif 

@Line 172, you can find the below variable which has the data in hexadecimal format for "index.html", which can be changed to your desired data, 
static const unsigned char FSDATA_ALIGN_PRE data__index_html[] FSDATA_ALIGN_POST = {}

Hi Shaunak,

Thanks a lot for your reply with the given path.

I could approve that the data inside the fsdata.c is the binary data from the index.html, the sics.gif and the 404. As a quick test, I just changed one letter in the hex data (inside fsdata.c) and recompiled the project.

But this did not helped, I could not see my change, after reloading the webpage (on 192.168.x.x)

Could you point me in the source code to the include where the fsdata.c is linked in the "enet_cpsw_rawhttpserver_am263x-lp_r5fss0-0_nortos_ti-arm-clang" example?

Thanks a lot!

Cheers,

Chris

Hi Chris,

I locally tried changing it on my end and I could see the http:/IP_Addr/index.html file changing.

Instead of just changing one letter, can you please change/ remove a hefty chunk of data or maybe multiple chunks of data from the binary array.

My assumption is since the binary dump is of an HTML file, the hex character might not have been something related to the actual content of the page but some HTML tag such as <p> (paragraph tag) or a <div> tag, which will produce no significant change in the output.

Please try removing/changing a larger chunk of data.

Regards,

Shaunak

Also just a point to be noted,

Rebuilding a project through CCS (Code Composer Studio) will not rebuild the corresponding libraries, they will have to be manually rebuilt (lwip-stack in your case).

The file which we are modifying belongs to the lwip-stack and thus the whole lwip-stack needs to be rebuilt and then the project needs to be rebuilt.

Regards,

Shaunak

Hi Shaunak,

Thanks for your quick reply. It makes sense that this file is part of the stack and not of the CCS project. I think that's the reason why a change has no effect on my computer. Thats also the reason why I could not find any references to these data from the CCS project.

Anyhow, two questions:

1. Is there a CCS example project, where the LWIP stack is inside the CSS-Project - so a rebuild would also cause a rebuild of the LWIP stack?

2. Is there a tutorial on how to rebuild the LWIP stack on a windows machine?

Thanks for your answers,

Best

Chris