This works fine on my Nucleo-F767ZI. Thank you a lot for integrating codes.
I believe that NUCLEO-F746ZG and NUCLEO-H743ZI also could run this same code when pin definitions file is provided since they have same RMII interface and PHY chip (LAN8742A).

Hello boochow, i would like to ask you how did you test the Ethernet , as i am struggling to work with this topic ,would appreciate any help

i would like to ask you how did you test the Ethernet

Please see also #3878

@ziadelmolla to use this PR we have to cherry-pick a bug fix of modnetwork.c.
@dpgeorge nic.ifconfig() shows a wrong dns server address. in modnetwork.c, at line 136, we should use 'dns' instead of '&dns'.

building this PR for Nucleo-F767ZI:

git clone http://github.com/micropython/micropython.git
cd micropython/
git fetch origin pull/3808/head:local-branch-name
git checkout local-branch-name
git cherry-pick 309fe39dbb14b1f715ea09c4b9de235a099c01b0
git submodule update --init
make -C mpy-cross
make -C ports/stm32 MICROPY_HW_ENABLE_ETH_RMII=1 BOARD=NUCLEO_F767ZI
make -C ports/stm32 MICROPY_HW_ENABLE_ETH_RMII=1 BOARD=NUCLEO_F767ZI deploy-stlink

testing the ethernet and its results:

>>> import network
>>> nic = network.Ethernet()
>>> nic.active(True)
>>> nic.ifconfig('dhcp')
>>> print(nic.ifconfig())
('192.168.0.105', '255.255.255.0', '192.168.0.1', '192.168.0.1')
>>> import socket
>>> socket.getaddrinfo('micropython.org', 80)
[(2, 1, 0, '', ('176.58.119.26', 80))]
>>>

nic.ifconfig() shows a wrong dns server address. in modnetwork.c, at line 136, we should use 'dns' instead of '&dns'.

Thanks! I've now fixed this in 6fc84a7

@dpgeorge @boochow Thank u for your help. Everything is now working properly.

Should I test this PR Code on STM32F746G-disco board?

Hi everyone!
Thanks to all contributed into ethernet on stm32.

Today i've ported ethernet feature (RMII) from STM32F7 to STM32F4DISC board.
I´m using STM32F4DISC with DM-STF4BB addon board to have out of the box ethernet experience.
LAN8720A and LAN8742A work perfect (they are direct pin compatible).
I've managed to run Telnet StarWars example running via serial REPL.

In order to test network performance i used iperf utility.
iperf -c board_ip -p 8080 -t 1000 -i 5

uPy code on the board (main.py):

import network
import socket

print('Ethernet init ...')
eth = network.Ethernet()
print('Ethernet init ... done')

eth.active(1)
eth.ifconfig('dhcp')

print(eth.ifconfig())

addr = socket.getaddrinfo(eth.ifconfig()[0], 8080)[0][-1]
s = socket.socket()
s.bind(addr)
s.listen(1)

while True:
    cl, addr = s.accept()
    print('client connected from', addr)
    cl_file = cl.makefile('rwb', 0)
    while True:
        line = cl_file.read(1024)
        if not line or line == b'\r\n':
            break
    cl.close()

and it showed appoximately 4.19-4.3MBit
BUT
after i ONLY just connected and didnt open any consoles or putty to use REPL, uUSB cable to the stm32f407 board port the speed bumped up to 6.5-7.9MBit.
and back if one pulls usb out of the port.
Very very wierd behavior indeed.

Any suggestions?
Thanks.

I'm trying to run micropython on STM32F746G-DISCO. Using "above recipe" ethernet is working fine but SD card is now working: (PYB: can't mount SD card message during startup). Has anyone working SD card on theses board? And second question: are they any chances to include these patch into "main branch" of the project?

I would like to ask if the Ethernet connection is supported with NUCLEO_H743ZI ?

This is superseded by #4541

👍👍