Hi, in http://arduino.cc/en/Reference/StreamReadBytesUntil there is a newline missing before length in the line

buffer: the buffer to store the bytes in (char[] or byte[]) length : the number of bytes to read (int)

Kind regards,
Thomas (@tamberg)

Hi, referring to

    http://arduino.cc/en/Reference/ClientConnect

wouldn't the technically correct term for URL (as used here) be host? So instead of

     client.connect(URL, port)

and

    URL: the domain name the client will connect to (string, ex.:"arduino.cc")

the reference should say

     client.connect(host, port)

and

    host: the domain name the client will connect to (string, ex.:"arduino.cc")

Kind regards,
Thomas (@tamberg)

Zorlon: The new release Arduino 0017 (out now) includes a proper "Arduino Nano w/ ATmega328" entry in the "Tools > Board" menu.

http://arduino.cc/en/Main/Software

Regards,
tamberg

Zorlon: "Tools->Board->Arduino Duemilanove w/ ATmega 328" seems to be the only selection that works with the Nano v3.0

Regards,
tamberg

Thanks for your quick answer. What do you mean by "objects but not instances"? Isn't an object just an instance of a class? Or are Arduino objects rather like structs in C?

Regards,
tamberg

Hi,

(coming from Java, no C/C++ experience)

there seems to be a difference between Processing and Arduino when it comes to calling a constructor to instantiate an object of a class.

E.g. Processing

    C c; // declare variable c
    c = new C(); // create object of class C
    c.M(); // call method M of c

vs. Arduino

    C c(); // declare & create
    c.M(); call method M of c

Now my questions:

1) Is there a way in Arduino to declare a variable of a class and *later* assign an instance to it?

2) Does Arduino really have classes, objects and constructors?

Regards,
tamberg

Here's a detailed write up of the Yaler Arduino Web LED demo including source code:
http://www.instructables.com/id/Arduino-Web-LED/

Cheers,
tamberg

Hi Isaac,

we currently use about the following code to run a Web service on an Arduino / WIZnet Ethernet shield and make it accessible via Yaler:

Code:

#include <Ethernet.h>
#include <EthernetDHCP.h>

byte mac[] = ...
byte yalerIp[] = ...
const char yalerId[] = "my-arduino";

...

void setup() {
  EthernetDHCP.begin(mac); // calls Ethernet.begin()
  ... sensor setup ...
}

void loop() {
  Client client(yalerIp, 80);
  client.connect();
  if (client.connected()) {
    sendYalerPostRequest(client, yalerId);
    int status = receiveYalerResponse(client);
    if (status == 101) {
      receiveBrowserRequest(client, ...);
      ... read sensor ...
      sendBrowserResponse(client, ...);
    } else {} // 204
    client.stop();
  }
}

With our DHCP server / office LAN, calling EthernetDHCP.maintain(); seems not to be necessary, as long as the DHCP server keeps running.

Cheers,
tamberg

http://yaler.org/