I wanted to implement a ethernet interface in ESP8266 module.
Just in time, Espressif released open-source-lwIP as below.
http://bbs.espressif.com/viewtopic.php?f=46&t=951
So, for just test reason, I implemented ethernet packet handling code using ESP8266 as above.
With this test, I'm sure that many projects with ESP8266 and ethernet are possible.
- Ethernet to WiFi (Ethernet to 802.11 converter)
- Dual NIC Application(WiFi and Ethernet)
And, I think that W5500 is a best choice for the ESP8266's ethernet interface.
https://github.com/Wiznet/ioLibrary_Driver
Please refer to my test result and source codes as below.
https://github.com/SungEun-Steve-Kim/ethernet_packet_handling_using_esp8266
Steve