Ethernet shield 2 problem

Projects Networking, Protocols, and Devices
1

Hi I'm having problem with the code from the book of Simon Monk with the project ''web relay'', i have a ethernet shield 2 with poe, with an arduino uno R3 and the code wont work. I added the library ''ethernet2'' for it to work but still wont. I tried other example scketech from the ethernet 2 library from the IDE and they worked so I know it's not my shield that is broken.

That is the exact same code from the book exept I changed it to my local ip and changed the #include <Ethernet.h> to #include <Ethernet2.h>

Is there a way to make it work with my shield because it seems like this code wasn't intended for this shield.

// web_relay
// Arduino Uno or (Leonardo with Ethernet SHield R3)

#include <SPI.h>
#include <Ethernet2.h>


// MAC address just has to be unique. This should work
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
// The IP address will be dependent on your local network:
IPAddress ip(192, 168, 1, 7);
EthernetServer server(80);

int relayPin = A0;

char line1[100];

void setup()
{
pinMode(relayPin, OUTPUT);
Ethernet.begin(mac, ip);
server.begin();
}

void loop()
{
EthernetClient client = server.available();
if (client) 
{
  while (client.connected()) 
  {
    readHeader(client);
    if (! pageNameIs("/"))
    {
      client.stop();  
      return;
    }
    digitalWrite(relayPin, valueOfParam('a'));
    client.println("HTTP/1.1 200 OK");
    client.println("Content-Type: text/html");
    client.println();

    // send the body
    client.println("<html><body>");
    client.println("<h1>Relay Remote</h1>");

    client.println("<h2><a href='?a=1'/>On</a></h2>");
    client.println("<h2><a href='?a=0'/>Off</a></h2>");
    client.println("</body></html>");

    client.stop();            
  }
}
}


void readHeader(EthernetClient client)
{
// read first line of header
char ch;
int i = 0;
while (ch != '\n')
{
  if (client.available())
  {
    ch = client.read();
    line1[i] = ch;
    i ++;
  }
}
line1[i] = '\0'; 
Serial.println(line1);
}

boolean pageNameIs(char* name)
{
 // page name starts at char pos 4
 // ends with space
 int i = 4;
 char ch = line1[i];
 while (ch != ' ' && ch != '\n' && ch != '?')
 {
   if (name[i-4] != line1[i])
   {
     return false;
   }
   i++;
   ch = line1[i];
 }
 return true;
}

int valueOfParam(char param)
{
for (int i = 0; i < strlen(line1); i++)
{
  if (line1[i] == param && line1[i+1] == '=')
  {
    return (line1[i+2] - '0');
  }
}
return 0;
}
2

You need to add some debugging.

void setup()
{
 // start the serial port
 Serial.begin(9600);

 pinMode(relayPin, OUTPUT);
 Ethernet.begin(mac, ip);
 server.begin();
}

void loop()
{
 EthernetClient client = server.available();
 if (client)
 {
   // if client connects, display that on the serial monitor.   
   Serial.println("Client");
3

It is not displaying anything in the serial monitor.

4

Are you certain that IP is within the localnet range? What IP does the computer have that you are testing this with?

5

I used the code from here Ethernet - Arduino Reference to find my shield ip address and when I tested the sketch included with the library ''ethernet2'' I used that IP and it worked. I new to this kind of stuff still learning .

6

I get this error when I try to connect to it with the local Ip

''The 192.168.1.7 page isn’t working

192.168.1.7 didn’t send any data.
ERR_EMPTY_RESPONSE''