Flashduino

Demos

Flashduino Demo 001 (Press the red circle button.) (source)
Draw Test 001 (Press the red circle button.) (source)
Flashduino Demo 004 (Press the red circle button.) (source -- needs to have 'demo' sections uncommented) Graphs three channels

Code

flashduino-2009-03-01a.tgz -- ("Stag Hairdoo") new release with "dispatch" based approach
flashduino-2009-01-19c.tgz -- ("Tate Modem") third release, 3 real channels, added URL to return all analog values in one response, IP address of device: 192.168.222.222
flashduino-2009-01-19b.tgz -- ("Tower Bridge") second release, 3 "faked" channels demo
flashduino-2009-01-19a.tgz -- ("London Fog") first complete release uploaded proof-of-concept
bin2c.py -- Used to convert .swf file into a form to include in sketch file.

Project Log

( 11 January 2009 )

Initial upload of some older but tidied up demos.

( 17 January 2009 )

Uploaded bin2c.py script

( 19 January 2009 )

Uploaded multi-channel demo

Uploaded tar file with Arduino sketch, Python .swf generation script and bin2c.py tool. Should work on any official Arduino Ethernet compatible device. Tested on a Arduino Ethernet preview board.

Uploaded updated versions, including used of PROGMEM required by large .swf file size. (Not that I forgot to do that or anything... :-) )

( 23 February 2009 )

Fixed bug where the SWF file wouldn't be displayed if one of the other URLs had been accessed previously. @@ TODO: Upload new code.

Tried out the Arduino Ethernet2 library with my code seemingly successfully, with a saving of 2.5KB.

( 1 March 2009 )

Developed a new "dispatch" based approach to serving stuff dynamically from the Arduino. It's not perfect, but I think probably better than the previous code. The end result is that you can extend functionality with code mapping from a URL (fragment) to handler function like this:

  urlDispatcher.addHandler("/", handleShow);
  urlDispatcher.addHandler("/r/a/*", handleReadAnalog);
  urlDispatcher.addHandler("/r/d/*", handleReadDigital);

I'm not entirely happy about the memory usage but was trying to strike a balance between ease of use and memory usage.

Uploaded new version of dispatch-based code, the previous code is still included for the moment.

Current screenshot:

Could this nascent Arduino HTTP REST API implementation be the beginning of a generic Arduino web framework. And if it is, should it be called Djuino? Many would say no. :-)

( 1 March 2009 )

With Flash/ming I seem to be unable to use sendAndLoad of a LoadVars object to send using the POST method—it seems to be transformed into a GET method. But if I supply GET as the method then even with an empty set of variables it tacks a question mark ("?") on the end. Gah.

On the plus side, while it's an ugly URL, this actually works and illuminates an LED on pin 7: http://169.254.254.169/w/d/7/1 And this turns it off: http://169.254.254.169/w/d/7/0 Thrilling.

EEPROM reading and writing is now working. Not overly happy with how I got it working—trying to avoid boilerplate code led to other "evils"—but will do for now. @@ TODO: Upload code.

( 24 July 2009 )

Tidied up some tabs and found this example of using the REST API with Javascript from a web page not served off the Arduino:

<html>
<head>
<style>
img#image {visibility: hidden}
</style>
<script>
state = 0;
function toggle() {
  document["image"].src = "http://169.254.254.169/w/d/7/" + state;
  if (state == 0) {
    state = 1;
  } else {
    state = 0;
  }
  return false;
}

intervalId = 0;
function start() {
  intervalId = setInterval("toggle()",1000)
}

function stop() {
  clearInterval(intervalId);
}
</script>
</head>
<body>
<img name="image" id="image" src="http://169.254.254.169/w/d/7/1" >
<p><a href="#" onClick="javascript:toggle();">toggle</a></p>
<p><a href="#" onClick="javascript:start();">start</a></p>
<p><a href="#" onClick="javascript:stop();">stop</a></p>
</body>
</html>

Old notes

LDR --> Graph
LEDs
Pushbutton

MAC monitor

Script

Run script when disconnected

http server
tftp upload -- Trivial File Transfer Protocol, THE TFTP PROTOCOL (REVISION 2)

eeprom
wiz810mj