LWIP ethernet low level-driver

[Lemberger]

hi @all

I want to use ChibiOs with LWIP extention.

I am testing ARMCM4-STM32F407-LWIP demo on the olimex board => runs fine

Now I want to develope my own board. I want to use a davicom Phy DM9161.

I can compile the ARMCM4-STM32F407-LWIP demo with
#define BOARD_PHY_ID MII_DM9161_ID in board.h

1.)I want to know if it realiy runs wit the Davicom Chip?

I have problems to find the low-level driver for the Phy in the demo source (included KS8721).
2.)Where ist the hardware driver location in the demo ?

On the new Discovery STM -Base Board STM32F4DIS-BB
http://www.element14.com/community/docs ... schematics
there is a LAN8720 SMC-chip (small size and pinout) on the base-board.
3.)Have anybody running this chip (or LAN8710) , does it run with STM32F4DIS-BB ?

I hope for answer

thank you

[Giovanni]

Hi,

The driver should work with any kind of PHY assuming you configure correctly the PHY ID in you board file. Possible source of problems are often incorrect settings of I/O pins related to PHY or PHY clock issues.

I didn't use one of those MB yet, it is possible somebody else already tested it and will post here.

Giovanni

[EricHolmberg]

Lemberger,

Did you end up getting the base board and trying out the LAN8720A? I'm curious if I should look at the LAN8720A or stick with the KSZ8721 or DP83848.

Reviewing the data sheets, the extended register definitions are quite different, so it's probably a couple-hour job to tweak the existing code.

Thanks,
Eric

[EricHolmberg]

Reviewing the current line of Ethernet PHY's, it looks like Micrel's KSZ8081RNA is probably a better fit and it's compatible with the KS8721 from a register standpoint (along with a few additions).