Hi everyone !
I bought the Ethernet Shiel ENC28J60 (datasheet : here)
I would like to create a web interface which will allow me to control different elements of my arduino (like led, change values of some variables, play sound…)
For this, I use the EtherCard.h library
For now, I had this simple interface permitting to change the color of an RGB led from Adafruit with three button on my interface
My probleme come after that…
When I want add other element on my page (like buton to change the difficulty of a game or play some sounds), my page stop working…
Here is my code :
#include <EtherCard.h>
#include <PololuLedStrip.h>
#define LED_COUNT 1 //Number of led connected
#define LED1 4 // define LED pin
PololuLedStrip<4> ledStrip;
rgb_color colors[LED_COUNT];
static byte myip[] = { 192, 168, 2, 177 }; // ethernet interface ip address
static byte gwip[] = { 192, 168, 1, 254 }; // gateway ip address
static byte mymac[] = { 0x74, 0x69, 0x69, 0x2D, 0x30, 0x31 }; // ethernet mac address - must be unique on your network
bool boolLedR = false;
bool boolLedG = false;
bool boolLedB = false;
byte Red = 0, Green = 0, Blue = 0;
byte Ethernet::buffer[500]; // tcp/ip send and receive buffer
BufferFiller bfill;
void setup() {
Serial.begin(9600);
pinMode(LED1, OUTPUT);
if (ether.begin(sizeof Ethernet::buffer, mymac) == 0)
Serial.println( "Failed to access Ethernet controller");
ether.staticSetup(myip, gwip);
ether.printIp("IP: ", ether.myip);
ether.printIp("GW: ", ether.gwip);
ether.printIp("DNS: ", ether.dnsip);
}
//En tête HTML
const char http_OK[] PROGMEM =
"HTTP/1.0 200 OK\r\n"
"Content-Type: text/html\r\n"
"Pragma: no-cache\r\n\r\n";
const char http_Found[] PROGMEM =
"HTTP/1.0 302 Found\r\n"
"Location: /\r\n\r\n";
const char http_Unauthorized[] PROGMEM =
"HTTP/1.0 401 Unauthorized\r\n"
"Content-Type: text/html\r\n\r\n"
"<h1>401 Unauthorized</h1>";
//Principal page of my interface
void homePage()
{
bfill.emit_p(PSTR("$F"
"<html>"
"<head>"
"<title>Escape Dimension</title>"
"<meta http-equiv='refresh' content='5'/>"
"</head>"
"<body>"
"<h1 style='text-align:center'> Game master </h1>"
"<div style='border-style: solid'>"
"Color led :"
"<button><a href=\"?ledr=$F\">$F</a></button>"
//Add those 3 butons (or just one) stop the program...
// "<button>Difficulte 1</button>"
// "<button>Difficulte 2</button>"
// "<button>Difficulte 3</button>"
"</div>"
"</body>"
"</html>"
),
http_OK,
boolLedR ? PSTR("off") : PSTR("on"),
boolLedR ? PSTR("RED allume") : PSTR("RED eteint"),
boolLedG ? PSTR("off") : PSTR("on"),
boolLedG ? PSTR("GREEN allume") : PSTR("GREEN eteint"),
boolLedB ? PSTR("off") : PSTR("on"),
boolLedB ? PSTR("BLUE allume") : PSTR("BLUE eteint")
);
}
void loop() {
colors[0] = rgb_color(Green, Red, Blue);
ledStrip.write(colors, LED_COUNT);
// wait for an incoming TCP packet, but ignore its contents
word len = ether.packetReceive();
word pos = ether.packetLoop(len);
if (pos) {
delay(1); // necessary for my system
bfill = ether.tcpOffset();
char *data = (char *) Ethernet::buffer + pos;
if (strncmp("GET /", data, 5) != 0) {
// Unsupported HTTP request
// 304 or 501 response would be more appropriate
bfill.emit_p(http_Unauthorized);
}
else {
data += 5;
if (data[0] == ' ') {
// Return home page
homePage();
}
else if (strncmp("?ledr=on", data, 8) == 0) {
// Set boolLedR true and redirect to home page
boolLedR = true;
Red = 255;
bfill.emit_p(http_Found);
}
else if (strncmp("?ledr=off", data, 9) == 0) {
// Set boolLedR false and redirect to home page
boolLedR = false;
Red = 0;
bfill.emit_p(http_Found);
}
else if (strncmp("?ledg=on", data, 8) == 0) {
// Set boolLedR true and redirect to home page
boolLedG = true;
Green = 255;
bfill.emit_p(http_Found);
}
else if (strncmp("?ledg=off", data, 9) == 0) {
// Set boolLedR false and redirect to home page
boolLedG = false;
Green = 0;
bfill.emit_p(http_Found);
}
else if (strncmp("?ledb=on", data, 8) == 0) {
// Set boolLedR true and redirect to home page
boolLedB = true;
Blue = 255;
bfill.emit_p(http_Found);
}
else if (strncmp("?ledb=off", data, 9) == 0) {
// Set boolLedR false and redirect to home page
boolLedB = false;
Blue = 0;
bfill.emit_p(http_Found);
}
else {
// Page not found
bfill.emit_p(http_Unauthorized);
}
}
ether.httpServerReply(bfill.position()); // send http response
}
}
I put in comment of the homePage function butons which don’t want to work…
I hope someone here will be able to give me some help or maybe another solution more simple to create my interface ? 
