Nice. I like those Ethernet chips. These days, you can find MCUs with built-in Ethernet hardware, but I still enjoy working with simple AVRs, so the w5500 (basically an upgraded w5100) is my go-to.
I wrote a little framework (bootloader, utilities, etc.) to allow for updating firmware and tunneling stdout on AVRs over pure Ethernet.
I wrote a little framework (bootloader, utilities, etc.) to allow for updating firmware and tunneling stdout on AVRs over pure Ethernet.
https://github.com/jakemoroni/Micro-Protocol-SDK