Wired ESP32

[Petr Štetiar]

ESP32 uz ma MAC, takze staci jenom PHY, podporovane[0] se zdaji LAN8720 a
TLK110.  Olimex nabizi tyto hotove kramy[1,2] s LAN8710A.  Pokud to chce nekdo
fakt levneji, tak na eBay se prodavaji moduly s LAN8720 za cenu jednoho piva,
akorat to pak bude chtit trosku casu a pajku[3].

0. https://github.com/espressif/esp-idf/blob/master/examples/ethernet/ethernet/main/ethernet_example_main.c
1. https://www.olimex.com/Products/IoT/ESP32/ESP32-POE
2. https://www.olimex.com/Products/IoT/ESP32/ESP32-GATEWAY
3. https://sautter.com/blog/ethernet-on-esp32-using-lan8720/

-- ynezz