WIZnet WIZ550io/W5500 Ethernet module

WIZnet WIZ550io module

The WIZnet WIZ550io module contains a W5500 chip - it implements TCP/IP on-chip, so you just plug an Ethernet cable in one end, and SPI into the other.

Support is provided in Espruino, but you will have to use a special build of Espruino designed for it as there isn't enough space in flash to hold both CC3000 and WIZnet drivers.

To get the latest WIZnet binary:

  • Go to http://www.espruino.com/binaries and look for a file titled espruino_XXX_espruino_1r3_wiznet.bin, where XXX is the latest version
  • Right-click on it, and click Copy Link Address
  • Open the Web IDE, and click on Settings in the top-right
  • Click on Flasher
  • Paste the link into the Advanced Firmware Update text box
  • Click the Advanced Firmware Update button and follow the instructions.

You can also get a recent Espruino Git build or can build it yourself.

To build yourself, follow the instructions here and build with WIZNET=1 RELEASE=1 ESPRUINO_1V3=1 make.

Espruino Pico Shim

WIZnet W550io shim

The Shim available for the Espruino Pico helps to adapt the W550io to fit onto the Pico. Please see the video below:

Wiring Up

Just wire up J1 as follows. J2 does not need wiring up.

WIZ550io J1 Name Espruino
1 GND
2 GND GND
3 MOSI B5
4 MISO B4
5 SCK B3
6 CS B2
7 3V3 3V3
8 3V3  

On the Espruino Pico, the adaptor shim uses the following connections:

WIZ550io J1 Name Espruino
1 GND
2 GND GND
3 MOSI B15
4 MISO B14
5 SCK B13
6 CS B10
7 3V3 3V3
8 3V3  

Software

Just connect as follows:

var eth = require("WIZnet").connect();

Or for the Espruino Pico adaptor:

SPI2.setup({ mosi:B15, miso:B14, sck:B13 });
var eth = require("WIZnet").connect(SPI2, B10);

You can check your IP with:

eth.getIP()

The module gets its own IP, however it does not configure DNS by default (for looking up domain names). To do this either:

eth.setIP({ dns : "8.8.8.8" }); // google's DNS

Or use DHCP:

eth.setIP();

Create an HTTP server like this:

require("http").createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.write('Hello World');
  res.end();
}).listen(80);

Or load a webpage like this:

require("http").get("http://192.168.1.50", function(res) {
  res.on('data', function(data) { console.log(data);    });
});

For more examples, please see the Internet page.

Using

Buying

You can buy this module from:

However when buying direct from WIZnet, the cost of postage may end up being particularly high.

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