![]() If everything goes well you should have a UF2 file in build/examples/httpd called pico_rmii_ethernet_httpd.uf2. Then after that you can go ahead and build both the library and the example application. For instance, if you’re building things on a Raspberry Pi and you’ve run the pico_setup.sh script, or followed the instructions in our Getting Started guide, you’d point the PICO_SDK_PATH to $ export PICO_SDK_PATH = /home/pi/pico/pico-sdk Make sure you have your PICO_SDK_PATH set before before proceeding. Afterwards you need grab the the project from GitHub, along with the lwIP stack. If not, you should first set up the C/C++ SDK. If you already have the Raspberry Pi Pico toolchain set up and working, make sure your pico-sdk checkout is up to date, including submodules. What this means is that you can now connect your $4 microcontroller to an Ethernet breakout costing less than $2 and connect it to the internet. ![]() If you want to pick one up next day on Amazon you should be prepared to pay somewhat more, especially if you want Amazon Prime delivery, although they can still be found fairly cheaply if you’re prepared to wait a while. The project currently supports RMII-based Ethernet PHY modules like the Microchip LAN8720.īreakout boards for the LAN8720 can be found on AliExpress for around $1.50. ![]() Built around the lwIP stack, it leverages the PIO, DMA, and dual-core capabilities of RP2040 to create an Ethernet MAC stack in software. The PHY support was put together by Sandeep Mistry, well known as the author of the noble and bleno Node.js libraries, as well as the Arduino LoRa library, amongst others. ![]() Of course this was only ever going to be a temporary inconvenience, and sure enough, over Pi Day weekend we saw both USB Ethernet and Ethernet PHY support released for Pico and RP2040. Raspberry Pi Pico has a lot of interesting and unique features, but it doesn’t have networking. ![]()
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