ESP32 + LAN8720

dobo
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Thanks for the clarification.
radzik_r
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As klew mentioned, the solution is good at the entrance gate or garage, where someone may not have Wifi coverage.
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adik300i
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Thanks! Its a great solution for an electrical switchboard made of metal, no need for external antennas etc.
How to define the other GPIOs with your software?
Is it possible to add such function to the gui generic? :P
elmaya
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adik300i wrote: Thu Jan 20, 2022 8:07 pm Thanks! Its a great solution for an electrical switchboard made of metal, no need for external antennas etc.
How to define the other GPIOs with your software?
GPIOs are defined the same as with WiFi.
Is it possible to add such function to the gui generic? :P
I guess so, you'll have to ask in the appropriate section.
viewforum.php?f=88
jaku2k
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Joined: Sun May 24, 2020 8:40 pm

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Hello,
is this solution compatible with ESP32 S3?

If yes, how should it be connected?
Regards,
Jakub
elmaya
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Location: El Saucejo - Sevilla

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ESP32-S3 does not support Ethernet MAC.
Currently, only ESP32 provides such support
jaku2k
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Alright, thank you for the answer.
jaku2k
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Explain me one more thing, please.

On the schematic there are TX and RX pins doubled. Does it mean that LAN8720 uses 2 I2C buses?

Regards,
Jakub
elmaya
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jaku2k wrote: Sun May 15, 2022 10:52 am Explain me one more thing, please.

On the schematic there are TX and RX pins doubled. Does it mean that LAN8720 uses 2 I2C buses?

Regards,
Jakub
Not at all.
the connection between ESP32 and LAN is: RMII (Reduced Media Independent Interface).
https://en.wikipedia.org/wiki/Media-ind ... rface#RMII
jaku2k
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elmaya wrote: Sun May 15, 2022 11:23 am Not at all.
the connection between ESP32 and LAN is: RMII (Reduced Media Independent Interface).
https://en.wikipedia.org/wiki/Media-ind ... rface#RMII
Thank you for the anwser. I read that entry and - if I understand correctly - there is still one free I2C bus left on the ESP.
Am I right?
Pozdrawiam
Jakub

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