Hi
I have a Arduino Ethernet board that produces strange results, the browser text is a mixture of the expected text and other older Sketches repeated a lot of times.
The sketch is from the Arduino 1.0 WebServer example:
/*
Web Server
A simple web server that shows the value of the analog input pins.
using an Arduino Wiznet Ethernet shield.
Circuit:
* Ethernet shield attached to pins 10, 11, 12, 13
* Analog inputs attached to pins A0 through A5 (optional)
created 18 Dec 2009
by David A. Mellis
modified 4 Sep 2010
by Tom Igoe
*/
#include <SPI.h>
#include <Ethernet.h>
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192,168,1, 177);
// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);
void setup()
{
// start the Ethernet connection and the server:
Ethernet.begin(mac, ip);
server.begin();
}
void loop()
{
// listen for incoming clients
EthernetClient client = server.available();
if (client) {
// an http request ends with a blank line
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
// if you've gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
if (c == '\n' && currentLineIsBlank) {
// send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println();
// output the value of each analog input pin
for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
client.print("analog input ");
client.print(analogChannel);
client.print(" is ");
client.print(analogRead(analogChannel));
client.println("
");
}
break;
}
if (c == '\n') {
// you're starting a new line
currentLineIsBlank = true;
}
else if (c != '\r') {
// you've gotten a character on the current line
currentLineIsBlank = false;
}
}
}
// give the web browser time to receive the data
delay(1);
// close the connection:
client.stop();
}
}
The output should be just a couple of lines, but is this instead:
analog input 0 is 501
analog input 1 is 434
analog input 2 is 336
analog input 3 is 275
analog input 4 is 238
analog input 5 is 212
rigin: * Content-Type: text/html; charset=utf-8
Hello, World!
>cmd"HTTP/1.0 200 OK HTTP/1.0 200 OK Server: Webduino/1.4 Access-Control-Allow-Origin: * Content-Type: text/html; charset=utf-8
Hello, World!
8
Hello, World!
black; padding: 5px;">
LOW
Digital 9: HTTP/1.0 200 OK Server: Webduino/1.4 Access-Control-Allow-Origin: * Content-Type: text/html; charset=utf-8
Hello, WorlHTTP/1.0 200 OK Server: Webduino/1.4 Access-Control-Allow-Origin: * Content-Type: text/html; charset=utf-8
Hello, World!
in: * Content-Type: text/htHTTP/1.0 200 OK Server: Webduino/1.4 Access-Control-Allow-Origin: * Content-Type: text/html; charset=utf-8
Hello, World!
Server: Webduino/1.4 Access-Control-Allow-Origin: * Content-Type: text/html; charset=utf-8
Hello, World!
HTTP/1.0 200 OK Server: WebHTTP/1.1 200 OKHTTP/1.0 200 OK Server: Webduino/1.4 Access-Control-Allow-Origin: * Content-Type: HTTP/1.0 200 OK Server: Webduino/1.4 Access-Control-Allow-Origin: * Content-Type: text/html; charset=utf-8
Hello, World!
Origin: * Content-Type: text/html; charset=utf-8
Hello, World!
1>or different text here.
- -
Analog input 0 reads: 442o WebHTTP/1.1 200 OK style HTTP/1.0 200 OK Server: Webduino/1.4 Access-Control-Allow-Origin: * ContenHTTP/1.0 200 OK Server: Webduint/html; charset=utf-80 OK Server: Webduinal PinHTTP/1.0 200 OK Server: Webduino/1.4 Access-Control-Allow-Origin: * Content-Type: text/html; charset=utf-8
Hello, World!
/1.0 200 OK SHTTP/1.0 200 OKHTTP/1.0 200 OK Server: Webduino/1.4 Access-Control-Allow-Origin: * Content-Type: text/html; charset=utf-8
HelHTTP/1.1 200 OK rver: Webduino/1.4 Access-Control-Allow-Origin: Content-Type: text/html analog input 0 is 501
… which goes on and on for 50 browser pages
Any hint to what is going on?
(I notice that the LED on the board connected to Digital pin 9 is dim, which it should’t be, the code has no connection to it as far as I can tell)
Regards
Klaus