TMS320F28379D: Building LwIP for f2837xd with driverlib

Yannick Bertrand

Part Number: TMS320F28379D
Other Parts Discussed in Thread: C2000WARE

Hi,

I would like to build lwip for the f2837xd.

There seems to be a port for the f2838x arch. I wonder, can this be relatively easily used for the f2837xd?

To make things clear, I would like to build it as a **library** (coff) so that I can link to it in another project (no need for the interface driver used in the f2838 port).

I'm seeking guidance on how to do it.

Also, I wonder if by any chance (in a previous version of c2000ware perhaps?) there was also a port of lwip version 1.4.1 (I see that the port uses lwip-2.1.2, but the 1.4.1 could prove useful granted I'm using already-made code that was intended for v1.4.1).

P.S. I'm using driverlib, fwiw.

Thanks!

over 4 years ago

0 Yashwant Temburu1 over 4 years ago

TI__Expert 4145 points

Hi Yannick,

In order to use lwIP as a library you can just modify the empty_driverlib_project.projectspec in the empty_project of f2837xd to something like the file attached which includes the necessary source files.

Note that there might be some errors occurring in lwIP lib because of data types as there is no 8 bit data type in C28x. You can replace unit8 with uint16.

You have stated in your question that you will not be using the port layer(f2838xif.c) which interfaces the EMAC, I am just curious how are you planning to use the Ethernet with f2837xd.e2e.ti.com/.../c28x_5F00_lwip-_5F00_projectspec.txt

Thanks,

Yashwant

0 Yannick Bertrand over 4 years ago in reply to Yashwant Temburu1

Prodigy 120 points

Thank you very much.

However I wonder, didn't TI "port" the library over to C2000 so that the uint8_t conflicts wouldn't causes issues (such as strict struct packing?)

To answer your question:

I plan on using the ENC28J60 chip with a custom driver found here : https://github.com/matwey/lwip-enc28j60

The lwip network interface driver is already provided. This is a temporary solution until we unlock more budget to develop our own driver (which will make massive use of DMA inside the C2000).

Thanks!

0 Yashwant Temburu1 over 4 years ago in reply to Yannick Bertrand

TI__Expert 4145 points

Hi,

lwIP was ported and tested on Cortex M4 which exists on f2838x and was not tested on c28x.

Regards,

Yashwant

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TMS320F28379D: Building LwIP for f2837xd with driverlib