The code work fine. I Stack the ethernet shield on Arduino Uno
/*
* UIPEthernet EchoServer example.
*
* UIPEthernet is a TCP/IP stack that can be used with a enc28j60 based
* Ethernet-shield.
*
* UIPEthernet uses the fine uIP stack by Adam Dunkels <adam@sics.se>
*
* -----------------
*
* This Hello World example sets up a server at 192.168.1.6 on port 1000.
* Telnet here to access the service. The uIP stack will also respond to
* pings to test if you have successfully established a TCP connection to
* the Arduino.
*
* This example was based upon uIP hello-world by Adam Dunkels <adam@sics.se>
* Ported to the Arduino IDE by Adam Nielsen <malvineous@shikadi.net>
* Adaption to Enc28J60 by Norbert Truchsess <norbert.truchsess@t-online.de>
*/
#include <SPI.h>
#include <UIPEthernet.h>
//#include <SD.h>
EthernetServer server = EthernetServer(80);
void setup()
{
/*Serial.begin(9600);
pinMode(2,OUTPUT);
digitalWrite(2,HIGH);
pinMode(3,OUTPUT);
digitalWrite(3,HIGH);
pinMode(4,OUTPUT);
digitalWrite(4,HIGH);
pinMode(5,OUTPUT);
digitalWrite(5,HIGH);
pinMode(6,OUTPUT);
digitalWrite(6,HIGH);
pinMode(7,OUTPUT);
digitalWrite(7,HIGH);
pinMode(8,OUTPUT);
digitalWrite(8,HIGH);
pinMode(9,OUTPUT);
digitalWrite(9,HIGH);
pinMode(10,OUTPUT);
digitalWrite(10,LOW);
*/
uint8_t mac[6] = {0x00,0x01,0x02,0x03,0x04,0x05};
IPAddress myIP(192,168,1,200);
Ethernet.begin(mac,myIP);
server.begin();
}
void loop()
{
size_t size;
if (EthernetClient client = server.available())
{
while((size = client.available()) > 0)
{
uint8_t* msg = (uint8_t*)malloc(size);
size = client.read(msg,size);
Serial.write(msg,size);
free(msg);
}
client.println("DATA from Server!");
client.stop();
}
}
and I can open the 192.168.1.200 from browser without problem when I add #include <SD.h> to Code it get may be conflict and I can't open the web page although I can't add any SD card shield and my Ethernet shield do not have the SD card slot . the Ethernet Shield use ss pin 10 . and try set all pin to HIGH and pin 10 to LOW . from month I can not find solution. sorry for bad English
Maybe you are running out of SRAM. I don't use the ENC28J60, so I can't test it, but I hear the library is larger. That and the SD library may require more SRAM than you have available.
Try adding this function to your code.
int freeRam() {
extern int __heap_start,*__brkval;
int v;
return (int)&v - (__brkval == 0 ? (int)&__heap_start : (int) __brkval);
}
Then call it like this before and after you start the ethernet shield with the SD.h library included.
freeRam does not return a percentage. Try this code and post the serial monitor output. The server could return a packet that allocates more SRAM than you have available.
#include <SPI.h>
#include <UIPEthernet.h>
#include <SD.h>
uint8_t mac[6] = {0x00,0x01,0x02,0x03,0x04,0x05};
IPAddress myIP(192,168,1,200);
EthernetServer server = EthernetServer(80);
int freeRam() {
extern int __heap_start,*__brkval;
int v;
return (int)&v - (__brkval == 0 ? (int)&__heap_start : (int) __brkval);
}
void setup()
{
Serial.begin(9600);
pinMode(4,OUTPUT);
digitalWrite(4,HIGH);
Serial.print(F("SRAM left before ethernet begin: "));
Serial.println(freeRam());
Ethernet.begin(mac,myIP);
server.begin();
Serial.print(F("SRAM left after server begin: "));
Serial.println(freeRam());
}
void loop()
{
size_t size;
if (EthernetClient client = server.available())
{
while((size = client.available()) > 0)
{
// this malloc could request more SRAM than you have
uint8_t* msg = (uint8_t*)malloc(size);
size = client.read(msg,size);
Serial.write(msg,size);
Serial.print(F("SRAM left after client read: "));
Serial.println(freeRam());
free(msg);
}
client.println("DATA from Server!");
client.stop();
}
}
Don't allocate that much SRAM. You are using only the first line of the request. Search the forum for zoomkat's server code. He limits the number of characters to about 100. Here is an example of his code: http://forum.arduino.cc/index.php?topic=267616.msg1887593#msg1887593
He uses the String data type. I prefer a character array.
You don't need all of zoomkat's code. Just use the part that gets the client request and disregard the rest.
String readString;
EthernetClient client = server.available();
if (client) {
while (client.connected()) {
if (client.available()) {
char c = client.read();
// here is the part that keeps the SRAM use down to about 100 bytes
if (readString.length() < 100) {
readString += c;
}
//check if HTTP request has ended
if (c == '\n') {
//check get atring received
Serial.println(readString);
#include <SPI.h>
#include <UIPEthernet.h>
#include <SD.h>
uint8_t mac[6] = {0x00,0x01,0x02,0x03,0x04,0x05};
IPAddress myIP(192,168,1,200);
EthernetServer server = EthernetServer(80);
int freeRam() {
extern int __heap_start,*__brkval;
int v;
return (int)&v - (__brkval == 0 ? (int)&__heap_start : (int) __brkval);
}
void setup()
{
Serial.begin(9600);
pinMode(4,OUTPUT);
digitalWrite(4,HIGH);
Serial.print(F("SRAM left before ethernet begin: "));
Serial.println(freeRam());
Ethernet.begin(mac,myIP);
server.begin();
Serial.print(F("SRAM left after server begin: "));
Serial.println(freeRam());
}
void loop()
{
size_t size;
String readString;
EthernetClient client = server.available();
if (client) {
while (client.connected()) {
if (client.available()) {
char c = client.read();
// here is the part that keeps the SRAM use down to about 100 bytes
if (readString.length() < 100) {
readString += c;
}
//check if HTTP request has ended
if (c == '\n') {
//check get atring received
Serial.println(readString);
///////////////////////////////////////
while((size = client.available()) > 0)
{
// this malloc could request more SRAM than you have
uint8_t* msg = (uint8_t*)malloc(size);
size = client.read(msg,size);
Serial.write(msg,size);
Serial.print(F("SRAM left after client read: "));
Serial.println(freeRam());
free(msg);
}
///////////////////////////////////////////////////
client.println("DATA from Server!");
client.stop();
}
}
}
}
//////////////////////////////////////////
}
and the output
SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSMMMMMMMMíSRAM left before ethernet begin: 263
SRAM left after server begin: 263
