Hi. I got a Mega R3 and Ethernet shield R3, and I am trying to host a web server. It worked on the UNO but when I upgrade to the mega everything stopped working. When I go to 192.168.2.22 it just keep on loading. Does anyone know what's likely to be the problem? Thank a lot!
I tried a couple of configurations: #1) #2) Remove all the wires #3) Same as #1 but bended the 4 pins (10,11,12,13 on the Ethernet Shield) then change chipSelect_W5100 from 53 to 10
Hi. Thanks for your speedy response. "It" refers to the browser, and I think the browser was attempting to locate 192.168.2.22.
Right now I am just using the sample WebServer code. The only modification I made is the IP address. I removed all the wires as suggested, and here is what happened:
Any idea? I have also observed that the onbaord LED light is on at all time. Is it normal? It doesn't happen when I use the 4 wires configuration. Thanks...
//zoomkat 2-13-12
//DNS and DHCP-based web client test code
//for use with IDE 1.0
//open serial monitor and send an e to test
//and to see test result
//for use with W5100 based ethernet shields
//browser equivelant URL:
// http://web.comporium.net/~shb/arduino.txt
//note that the below bug fix may be required
// http://code.google.com/p/arduino/issues/detail?id=605
#include <SPI.h>
#include <Ethernet.h>
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //physical mac address
char serverName[] = "web.comporium.net"; // zoomkat's test web page server
EthernetClient client;
//////////////////////
void setup(){
Serial.begin(9600);
Serial.println("DNS and DHCP-based web client test 2/13/12"); // so I can keep track of what is loaded
Serial.println("Send an e in serial monitor to test"); // what to do to test
// start the Ethernet connection:
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
// no point in carrying on, so do nothing forevermore:
while(true);
}
// print your local IP address:
Serial.print("Arduino IP address: ");
for (byte thisByte = 0; thisByte < 4; thisByte++) {
// print the value of each byte of the IP address:
Serial.print(Ethernet.localIP()[thisByte], DEC);
Serial.print(".");
}
Serial.println();
Serial.println();
}
void loop(){
// check for serial input
if (Serial.available() > 0) //if something in serial buffer
{
byte inChar; // sets inChar as a byte
inChar = Serial.read(); //gets byte from buffer
if(inChar == 'e') // checks to see byte is an e
{
sendGET(); // call sendGET function below when byte is an e
}
}
}
//////////////////////////
void sendGET() //client function to send/receive GET request data.
{
if (client.connect(serverName, 80)) { //starts client connection, checks for connection
Serial.println("connected");
client.println("GET /~shb/arduino.txt HTTP/1.0"); //download text
client.println(); //end of get request
}
else {
Serial.println("connection failed"); //error message if no client connect
Serial.println();
}
while(client.connected() && !client.available()) delay(1); //waits for data
while (client.connected() || client.available()) { //connected or data available
char c = client.read(); //gets byte from ethernet buffer
Serial.print(c); //prints byte to serial monitor
}
Serial.println();
Serial.println("disconnecting.");
Serial.println("==================");
Serial.println();
client.stop(); //stop client
}