ESP32 + LAN8720

dobo
Posts: 1050
Joined: Sun Apr 07, 2019 8:14 pm
Location: Nadarzyn

Post

Thanks for the clarification.
radzik_r
Posts: 414
Joined: Sun Aug 11, 2019 5:32 pm

Post

As klew mentioned, the solution is good at the entrance gate or garage, where someone may not have Wifi coverage.
User avatar
adik300i
Posts: 41
Joined: Mon Oct 25, 2021 4:49 pm
Location: Opolskie

Post

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
Posts: 1482
Joined: Wed Jun 27, 2018 5:48 pm
Location: El Saucejo - Sevilla

Post

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
Posts: 899
Joined: Sun May 24, 2020 8:40 pm

Post

Hello,
is this solution compatible with ESP32 S3?

If yes, how should it be connected?
Regards,
Jakub
elmaya
Posts: 1482
Joined: Wed Jun 27, 2018 5:48 pm
Location: El Saucejo - Sevilla

Post

ESP32-S3 does not support Ethernet MAC.
Currently, only ESP32 provides such support
jaku2k
Posts: 899
Joined: Sun May 24, 2020 8:40 pm

Post

Alright, thank you for the answer.
jaku2k
Posts: 899
Joined: Sun May 24, 2020 8:40 pm

Post

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
Posts: 1482
Joined: Wed Jun 27, 2018 5:48 pm
Location: El Saucejo - Sevilla

Post

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
Posts: 899
Joined: Sun May 24, 2020 8:40 pm

Post

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

Return to “Ideas and concepts”