Hello,
I am having trouble at connecting arduino pins over network. The code uploads fine but when trying to open web page i get an error that "The page isn't working right now, 192...* didn't send any data"
Project before this works fine, web page opens, so i guess it's the code not the connections,..
Do you see anything in the code that i should fix?
Bets regards.
#include <SPI.h>
#include <Ethernet.h>
byte mac [] = {0xA8, 0x61, 0x0A, 0xAE, 0xA8, 0xD1};
EthernetServer server (80);
int numPins = 5;
int pins [] = {3, 4, 5, 6, 7};
int pinState [] = {0, 0, 0, 0, 0};
const uint8_t LINE_LEN = 100;
char line1 [LINE_LEN] = "/";
void setup ()
{
Ethernet.begin (mac);
server.begin ();
Serial.begin (115200);
pinMode (4, OUTPUT);
digitalWrite (4, HIGH);
for (int i = 0; i < numPins; i++)
{
pinMode (pins [i], OUTPUT);
}
if (pageNameIs ("/"))
Serial.print ("It is /");
else
Serial.println ("It is not. ");
}
void loop ()
{
EthernetClient client = server.available ();
if (client)
{
while (client.connected ())
{
readHeader (client);
if (! pageNameIs ("/"))
{
client.stop ();
return;
}
client.println ("HTTP/1.1 200 OK");
client.println ("Content-Type: text/html");
client.println ();
client.println ("<html><body>");
client.println ("<h1>Output Pins </h1>");
client.println ("<form method= 'GET' >");
setValuesFromParams ();
setPinStates ();
for (int i = 0; i < numPins; i++)
{
writeHTMLforPin (client, i);
}
client.println ("<input type ='submit' value='Update'/>");
client.println ("</form>");
client.println ("</body></html>");
client.stop ();
}
}
}
void writeHTMLforPin (EthernetClient client, int i)
{
client.print ("<p>Pin ");
client.print (pins[i]);
client.print ("<select name='");
client.print (i);
client.println ("'>");
client.print ("<option value='0'");
if (pinState [i] == 0)
{
client.print (" selected");
}
client.println (">Off</option>");
client.print ("<option value='1'");
if (pinState [i] == 1)
{
client.print (" selected");
}
client.println (">On</option>");
client.println ("</select></p>");
}
void setPinStates ()
{
for (int i = 0; i < numPins; i++)
{
digitalWrite (pins [i], pinState [i]);
}
}
void setValuesFromParams ()
{
for (int i = 0; i < numPins; i ++)
{
pinState[i] = valueOfParam (i + '0');
}
}
void readHeader (EthernetClient client)
{
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(const char * name)
{
int i = 4;
char ch = line1 [i];
while (ch != ' ' && ch != '\n' && ch != '?' && i < LINE_LEN)
{
ch = line1 [i];
if (name [i-4] != line1 [i])
{
return false;
}
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;
}
