Hi, i have a Arduino Mega 2560 and a ethernet shield W5100, i conected the shield to my modem and it works, the leds turn on, but i tried to use the DHCP Adress Printer example to get the ip of the arduino, and it dont send data, then i tried other examples and didnt work, then I saw the configuration page of my modem,and said nothing was connected in ethernet, but the leds of the modem say that something i connected when i plug the arduino (and i didnt have other things connected by wire), now i dont know what can be the problem, i think can be the shield, but im not sure, if anyone has an idea of ??what's heppening I would appreciate.
This is a photo of the shield:
Did the DhcpAddressPrinter sketch get an ip? If not, try the test sketch on this post. It will check the SPI connection between the Arduino and the shield.
Does it display 192.168.2.2?
edit: The pic of the shield didn't show up. Can you post a link to the ethernet shield you are using? Does it have a 6 pin header on the bottom that connects to the ICSP pins on the Mega?
SurferTim:
Did the DhcpAddressPrinter sketch get an ip? If not, try the test sketch on this post. It will check the SPI connection between the Arduino and the shield.
(Help)My Ethernet Shield suddenly stopped working (Solved) - #5 by SurferTim - Networking, Protocols, and Devices - Arduino Forum
Does it display 192.168.2.2?edit: The pic of the shield didn't show up. Can you post a link to the ethernet shield you are using? Does it have a 6 pin header on the bottom that connects to the ICSP pins on the Mega?
I tried the code in the arduino and the result was 0.0.0.0, and this is the model of my ethernet shield http://imall.iteadstudio.com/w5100-ethernet-shield.html thanks for your help.
That ethernet shield does not have the ICSP header on the bottom, so you will need to jumper a few pins to connect the SPI data lines. Use a few short jumper wires to connect these pins:
shield Mega
D11 -> D51
D12 -> D50
D13 -> D52
Leave D10 where it is to maintain compatibility with the ethernet library.
SurferTim:
That ethernet shield does not have the ICSP header on the bottom, so you will need to jumper a few pins to connect the SPI data lines. Use a few short jumper wires to connect these pins:
shield Mega
D11 -> D51
D12 -> D50
D13 -> D52Leave D10 where it is to maintain compatibility with the ethernet library.
Thanks, that was the problem, but i have another quiestion, i can store image files in a SD and open it whit HTML code whit this ethernet module? because i want to do a server and i need to use images in the design.
Search the forum for zoomkat and his web server code. He has examples on the forum that can handle images.
Thanks, that was the problem, but i have another quiestion, i can store image files in a SD and open it whit HTML code whit this ethernet module? because i want to do a server and i need to use images in the design.
Below is some test code that serves up files from the SD card that you can try.
//zoomkat 2/26/13
//SD server slider test code
//open serial monitor to see what the arduino receives
//browser address will look like http://192.168.1.102:84/servosld.htm when submited
//for use with W5100 based ethernet shields
//put the servosld.htm, slider.js, bluev_sl.gif,
//and bluev_bg.gif on the SD card
//download flies at:
// http://web.comporium.net/~shb/pix/servosld.htm
// http://web.comporium.net/~shb/pix/slider.js
// http://web.comporium.net/~shb/pix/bluev_bg.gif
// http://web.comporium.net/~shb/pix/bluev_sl.gif
//
#include <SD.h>
#include <SPI.h>
#include <Ethernet.h>
#include <Servo.h>
Servo myservoa, myservob, myservoc, myservod; // create servo object to control a servo
Servo myservoe, myservof, myservog; // myservoh not used due to lack of another free pin
String readString, pos;
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //physical mac address
byte ip[] = { 192, 168, 1, 102 }; // ip in lan
byte gateway[] = { 192, 168, 1, 1 }; // internet access via router
byte subnet[] = { 255, 255, 255, 0 }; //subnet mask
EthernetServer server(84); //server port
//////////////////////
void setup(){
Serial.begin(9600);
// disable w5100 while setting up SD
pinMode(10,OUTPUT);
digitalWrite(10,HIGH);
Serial.print("Starting SD..");
if(!SD.begin(4)) Serial.println("failed");
else Serial.println("ok");
Ethernet.begin(mac, ip, gateway, gateway, subnet);
//delay(2000);
server.begin();
Serial.println("Ready");
myservoa.attach(2); //the pin for the servoa control
myservob.attach(3); //the pin for the servob control
myservoc.attach(5); //the pin for the servoc control
myservod.attach(6); //the pin for the servod control
myservoe.attach(7); //the pin for the servoa control
myservof.attach(8); //the pin for the servob control
myservog.attach(9); //the pin for the servoc control
//myservoh.attach(10); //the pin for the servod control
}
void loop(){
// Create a client connection
EthernetClient client = server.available();
if (client) {
while (client.connected()) {
if (client.available()) {
char c = client.read();
//read char by char HTTP request
if (readString.length() < 100) {
//store characters to string
readString += c;
//Serial.print(c);
}
//if HTTP request has ended
if (c == '\n') {
///////////////
Serial.println(readString); //print to serial monitor for debuging
//select proper header for file to be sent to browser
client.println("HTTP/1.1 200 OK"); //send new page
if(readString.indexOf("servosld") >=0) {
client.println("Content-Type: text/html");
client.println();
}
if(readString.indexOf("slider") >=0) {
client.println("Content-Type: application/x-javascript");
client.println();
}
if(readString.indexOf("bluev") >=0) {
client.println("Content-Type: image/gif");
client.println();
}
//select file to send to browser
if(readString.indexOf("servosld") >=0) {
File myFile = SD.open("SERVOSLD.HTM");
if (myFile) {
byte clientBuf[64];
int clientCount = 0;
while (myFile.available())
{
clientBuf[clientCount] = myFile.read();
clientCount++;
if(clientCount > 63)
{
client.write(clientBuf,64);
clientCount = 0;
}
}
if(clientCount > 0) client.write(clientBuf,clientCount);
myFile.close();
}
}
if(readString.indexOf("slider") >=0) {
File myFile = SD.open("slider.js");
if (myFile) {
byte clientBuf[64];
int clientCount = 0;
while (myFile.available())
{
clientBuf[clientCount] = myFile.read();
clientCount++;
if(clientCount > 63)
{
client.write(clientBuf,64);
clientCount = 0;
}
}
if(clientCount > 0) client.write(clientBuf,clientCount);
myFile.close();
}
}
if(readString.indexOf("bluev_sl") >=0) {
File myFile = SD.open("bluev_sl.gif");
if (myFile) {
byte clientBuf[64];
int clientCount = 0;
while (myFile.available())
{
clientBuf[clientCount] = myFile.read();
clientCount++;
if(clientCount > 63)
{
client.write(clientBuf,64);
clientCount = 0;
}
}
if(clientCount > 0) client.write(clientBuf,clientCount);
myFile.close();
}
}
if(readString.indexOf("bluev_bg") >=0) {
File myFile = SD.open("bluev_bg.gif");
if (myFile) {
byte clientBuf[64];
int clientCount = 0;
while (myFile.available())
{
clientBuf[clientCount] = myFile.read();
clientCount++;
if(clientCount > 63)
{
client.write(clientBuf,64);
clientCount = 0;
}
}
if(clientCount > 0) client.write(clientBuf,clientCount);
myFile.close();
}
}
delay(1);
//stopping client
client.stop();
//process GET string request from client and and position servo
pos = readString.substring(8, 12); //get the first four characters
//Serial.println(pos);
int n = pos.toInt(); //convert readString into a number
Serial.println(n);
Serial.println();
if(readString.indexOf("?0") >0) myservoa.writeMicroseconds(n);
if(readString.indexOf("?1") >0) myservob.writeMicroseconds(n);
if(readString.indexOf("?2") >0) myservoc.writeMicroseconds(n);
if(readString.indexOf("?3") >0) myservod.writeMicroseconds(n);
if(readString.indexOf("?4") >0) myservoe.writeMicroseconds(n);
if(readString.indexOf("?5") >0) myservof.writeMicroseconds(n);
if(readString.indexOf("?6") >0) myservog.writeMicroseconds(n);
//only seven servo pins, so back to myservoa for testing
if(readString.indexOf("?7") >0) myservoa.writeMicroseconds(n);
//clearing string for next read
readString="";
pos="";
}
}
}
}
}