I've got my own design STM32F767 boards and I've briefly had the Ethernet going but now it's stopped working and I don't know where to look. I'm using CubeMX to generate the application framework and the hardware is basically a clone of the Nucleo board so I'm using the LAN8742A-CZ on the RMII. When it was working I was running a sockets server and I could ping the board, so it looked pretty encouraging.
Any help with debug suggestions would be gratefully received.
