Wiznet makers

Standard Arduino Ethernet shields use the WIZnet W5100 chip, which provides hardware support for TCP/IP. The W5100 is supported out of the box by?Pixl.js Most other offical Espruino boards have firmware with support for the?WIZnet W5500?and will not work with the W5100 without a special firmware build.

Wiring?

The Ethernet shield shown above exposes the W5100 through pins on the Arduino 2x3 pin?ICSP?header (which isn't present on?Pixl.js) rather than the standard Arduino footprint. To connect it up, you will need to add 3 wires to the shield (mirroring the connections there would be on an Arduino UNO board), connecting:

• ICSP MOSI to?D11
• ICSP MISO to?D12
• ICSP SCK to?D13

 ---------------------------------
|              D13  D12  D11      |
|              SCK MISO  MOSI     |
|                                  
| ETH                               |
| JACK                              |
|                                   |
|                        MISO ---   |
|                        SCK  MOSI  |
|                        ---- GND   |
|                                   |
|                         SD CARD   |
|                                   |
|                                   |
| RESET                            /
 ----------------------------------

The easiest method is to remove the?ICSP?header completely and add wires on the underside of the board. Now attach Pixl to shield

Pinout?

This board has the following connections:

Pin	Connection
D13	SCK
D12	MISO
D11	MOSI
D10	W5100 CS
D4	SD Card CS
D2	W5100 IRQ

Software?

Ethernet?

First, you need to set up communications with the WIZnet chip:

SPI1.setup({ mosi:D11, miso:D12, sck:D13 });
var eth = require("WIZnet").connect(SPI1, D10 /*CS*/);

Unlike the W5500 the W5100 doesn't come in a module with a pre-assigned MAC address set. You can either set one and then use DHCP to get an IP address:

eth.setIP({mac:"00:08:dc:ab:cd:ef"});
eth.setIP();

or can set the IP address manually:

eth.setIP({
  ip:"192.168.1.123",
  subnet:"255.255.255.0",
  gateway:"192.168.1.1",
  dns:"8.8.8.8",
  mac:"00:08:dc:ab:cd:ef"
});

Now you're ready to go - you can request a webpage:

require("http").get("http://www.pur3.co.uk/hello.txt", function(res) {
  res.on('data', function(d) {
    console.log("--->"+d);
  });
});

Note:?there is currently an issue in the W5100 library that causes Espruino to pause for 30 seconds when closing a socket, however everything else works. Or can even start a web server:

function pageHandler(req, res) {
  res.writeHead(200);
  res.end("Hello World");
}

require("http").createServer(pageHandler).listen(80);
console.log("Connect to http://"+eth.getIP().ip)

Functions that are available on?eth?are documented in?the Ethernet Class See the?Internet?page for more examples of things you can do on Espruino with an Internet connection.

SD Card?

All you need to do to set up the SD card is:

// Setup SPI - no need to call this if you've already set up Ethernet
SPI1.setup({ mosi:D11, miso:D12, sck:D13 });
// Configure the SD card
E.connectSDCard(SPI1, D4 /*CS*/);

Then:

// see what's on the device
console.log(require("fs").readdirSync());
// write
require("fs")writeFileSync("test.txt","Some Data");
// read
print(require("fs").readFileSync("test.txt"));

See?the page on File IO?for more information.