Olimex STM32-E407

[BrendanSimon]

What is a "PR". Problem Report?

I had a quick look at `drivers/wiznet5k/`, which provides and ethernet interface via the SPI interface. I think it is accessed via the `socket` interface in the `ethernet` directory. I'm assuming it uses the onboard tcp/ip interface on the the W5500 chip, rather than a uPy tcp/ip library and a low level Net IF (but I'm not 100% certain).

The E407 would need to provide a Net IF, presumably to something like `lwip` library (which is in `lib/lwip`).

I think I will ask for some advice on this from the list to see which is the best way to approach this.

[BrendanSimon]

There is a skeleton file `lib/lwip/src/netif/ethernetif.c` which looks like it should be copied somewhere, renamed to something relevant to the stmhal or 407. e.g. stmethif.c or stmf4ethif.c or stmf407ethif.c

Then modifiy it to call the low level functions which should be in the F4 STM32Cube libraries. From memory I think saw lwip in the Cube so it probably already has a lot of this done ??

[BrendanSimon]

In the F4 Cube directory `STM32Cube_FW_F4_V1.13.0`, there are lots of `ethernetif.c` files.

Example:

`./Projects/STM32469I_EVAL/Applications/LwIP/LwIP_UDP_Echo_Client/Src/ethernetif.c`

Looks like they'd make a great basis for porting to the 407.