LAN8720A and HUB

Created at 2024-05-17 20:39:49

RT-THREAD eth_drv.c is properly well written, but
the LAN8720 seems to only work when linked directly to the PC with a direct cable but not when using a hub or switch.

The results are :

a) linked to a PC
[I/drv.emac] link up
[I/drv.emac] 100Mbps
[I/drv.emac] full-duplex

b) linked to a 10/100 Hub
[I/drv.emac] link up
[I/drv.emac] 100Mbps
[I/drv.emac] half-duplex

c) linked to a 100/1000 Switch
[I/drv.emac] link up
[I/drv.emac] 10Mbps
[I/drv.emac] half-duplex

The problem is when using the AUto-configuration feature.
If someone has insteda experience of the eth_driver working with the STM32F4xx and with hubs, please let me know

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