Archos 70 Android tablet with HTML pages for control and data display

Discussion in 'Javascript' started by P E Schoen, Sep 14, 2011.

  1. P E Schoen

    P E Schoen Guest

    I just recently bought an Archos 70 Internet Tablet which has a 7"
    multitouch display, Android OS, and WiFi network connection. I was able to
    make an HTML web page on my laptop computer, with JavaScript to respond to
    button clicks, just as a demo if the interface. The tablet device was able
    to connect to the web page on the computer's localhost XAMPP Apache server
    via the IP address, as well as a copy on my Dreamhost server:
    http://pstech-inc.com/KeypadDemo.htm

    What I want to do is make a WiFi enabled device using a Microchip PIC which
    has an Http/IP stack and can appear as an internet web page. Of course this
    is done through my WiFi router, and is available world-wide. This may have
    some usefulness, but really I just want to use the tablet as a smart,
    programmable GUI for the instrument. So, I think an ad-hoc network between
    the tablet and the device can be set up.

    I am not very familiar, yet, with the implementation of the TCP/IP stack for
    the PIC controller, but that is where the actual hardware will reside that
    needs to be controlled and monitored. The controls are mostly on/off, or
    perhaps setting an 8-bit or 12 bit value, and the data may be as simple as
    integer or floating point values updated 10 times a second, although in some
    cases it may need to stream as 12 bit values at 2500 samples/second. The
    resources of the PIC are limited, so it may only be able to handle simple
    web pages. And I'm not sure if the hardware may be manipulated directly from
    the web page, or if it will require some sort of server side scripting,
    which of course implies it has its own server, and can run something like
    PHP or even Ajax.

    Another way to implement this may be to configure the Archos tablet as a USB
    HID (Human Interface Device), instead of the Mass Storage Device as now
    configured. It would be acceptable to use a USB cable connection rather than
    wireless, and it may prove more reliable in some of the industrial
    environments encountered by the instruments as they are used (high voltage,
    high current, electrical and audible noise, etc).

    I would like to use HTML with JavaScript and perhaps AJAX or JSON for data
    and control exchanges, because of the relative ease of programming the GUI,
    but another alternative is to create an Android application for the device.
    I did some preliminary work in this direction where the development platform
    is on my Win7 PC with a Java and JDK environment, through an Eclipse IDE,
    and an emulator with an Android virtual device. I was able to get the simple
    "Hello" app working but it seems like a daunting task to go in this
    direction.

    There are also the options of using an iPod or iPad, which uses the Apple
    iOS and their browser. And, there are Win7 tablet PCs that could run an
    Apache server for the GUI in HTML, and use the USB host to connect to the
    instrument, which could then have a simple USB device interface (which I've
    already done). But there is still the question of sending commands and
    receiving data between the web page and the hardware. Of course, in that
    case, the PC could simply run an ordinary Windows GUI (which I'm familiar
    with, using Delphi). The Win7 tablets are about $700, compared to $500 for
    iPad, and $300 for the Archos. But cost is not a major factor for this
    application, since this will be replacing a dedicated proprietary touchpad
    that was originally proposed, and its cost was comparable. But the generic
    devices have the advantage of being useful for many other applications, and
    if the customer already has (or wants) such a device, it is essentially
    "free".

    This may not be the best place for this discussion, but I had no luck on the
    webmaster or networking newsgroups. There are many technologies potentially
    involved in this project, and I have expertise only in a few - mostly the
    actual hardware and PIC design, and less in HTML, JavaScript, PHP, and
    networking, in about that order. I just want to do this right, and it may
    have application for a large range of products. And I know that I should
    sell my strengths, and purchase my weaknesses, so I plan to enlist the help
    of expert consultants as needed. But I need enough understanding to know
    whom I should use and to make sure I'm not misled. Thanks for any ideas and
    assistance.

    Paul

    Some links:
    http://www.archos.com/products/ta/archos_70it/index.html?country=us&lang=en
    http://www.archos.com/products/tw/archos_9/index.html?country=us&lang=en
    http://developer.android.com/index.html
    http://www.eclipse.org/downloads/packages/eclipse-ide-java-developers/indigor
    http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en553673
    (Android)
    http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2504
    (Ethernet)
    http://netbooknavigator.com/index.php?option=com_virtuemart&Itemid=165&vmcchk=1&Itemid=9
    http://www.apple.com/ipad/
    http://www.apple.com/ios/ios5/features.html
     
    P E Schoen, Sep 14, 2011
    #1
    1. Advertising

  2. P E Schoen wrote:

    > What I want to do is make a WiFi enabled device using a Microchip PIC
    > which has an Http/IP stack and can appear as an internet web page.


    Having re-read this several times, something essential does appear to be
    missing from that sentence for it to make sense. Did you mean "use"
    (infinitive) instead of "using" (gerund)?

    > Of course this is done through my WiFi router, and is available world-
    > wide.


    You might want to consider establishing a firewall then.

    > This may have some usefulness, but really I just want to use the
    > tablet as a smart, programmable GUI for the instrument.


    Now *that* makes sense for once.

    > So, I think an ad-hoc network between the tablet and the device can be set
    > up.


    No, the PIC board does not feature a WLAN adapter, and you said you want to
    use your router.

    <http://en.wikipedia.org/wiki/Ad-hoc_network>

    > […]
    > The resources of the PIC are limited, so it may only be able to handle
    > simple web pages.


    Having watched the video demonstration for it, ISTM you are overestimating
    what the PIC board can do.

    > And I'm not sure if the hardware may be manipulated directly from the web
    > page, or if it will require some sort of server side scripting, which of
    > course implies it has its own server, and can run something like PHP or
    > even Ajax.


    ISTM at the current state of development of client-side Web APIs, a server-
    side application will be necessary if a "web page" is to be used for the
    primary user interface.

    > I would like to use HTML with JavaScript and perhaps AJAX or JSON for data
    > and control exchanges, because of the relative ease of programming the
    > GUI, but another alternative is to create an Android application for the
    > device. I did some preliminary work in this direction where the
    > development platform is on my Win7 PC with a Java and JDK environment,
    > through an Eclipse IDE, and an emulator with an Android virtual device. I
    > was able to get the simple "Hello" app working but it seems like a
    > daunting task to go in this direction.


    Developing an Android application with Eclipse and ADT is fairly easy, as
    ADT provides helpful tools, is well-documented, and there are good tutorials
    at the Google Web site. BTDT.

    Also, along with the Starter Kit for Android you got the software library.

    > There are also the options of using an iPod or iPad, which uses the Apple
    > iOS and their browser. And, there are Win7 tablet PCs that could run an
    > Apache server for the GUI in HTML, […]
    >
    > This may not be the best place for this discussion,


    It most certainly is not. This has only very remotely to do with the topic
    of this newsgroup.

    > but I had no luck on the webmaster or networking newsgroups.


    Perhaps you have not been patient enough, you have been asking in the wrong
    or in too many newsgroups at once, or the wrong question, or, as in the
    positing I am replying to, no question at all.

    <http://catb.org/~esr/faqs/smart-questions.html>

    > There are many technologies potentially involved in this project, and I
    > have expertise only in a few - mostly the actual hardware and PIC design,
    > and less in HTML, JavaScript, PHP, and networking, in about that order.


    You cannot build a steady house on quicksand.

    > I just want to do this right,


    There are always alternatives. However, IIUC, as your goal is to make this
    work on as many as mobile devices as possible, I suggest you develop a Web
    application that serves as middleware between the mobile device and the PIC
    board; virtually any mobile device features a Web browser. If and when
    necessary, a native application could be built around that; a HTTP client is
    part of the Android API and of iOS, of course. How the HTTP requests were
    triggered (native, or client-side scripting), how they were created (low-
    level TCP, direct, or XHR), and how they were transmitted (Wi-Fi, Bluetooth,
    USB, etc.), would be secondary then. It might be necessary that you
    installed an Android emulator on your server then, though, and this approach
    might still not work with that board. RTFM to be sure beforehand.

    > and it may have application for a large range of products. And I know that
    > I should sell my strengths, and purchase my weaknesses, so I plan to
    > enlist the help of expert consultants as needed. But I need enough
    > understanding to know whom I should use and to make sure I'm not misled.


    You will either have to acquire the knowledge through learning, or trust the
    individuals who you are employing that they know what they are doing, and
    that they are doing the best work that they can. Contracts can make sure of
    the latter.


    HTH

    PointedEars
    --
    realism: HTML 4.01 Strict
    evangelism: XHTML 1.0 Strict
    madness: XHTML 1.1 as application/xhtml+xml
    -- Bjoern Hoehrmann
     
    Thomas 'PointedEars' Lahn, Sep 21, 2011
    #2
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  3. P E Schoen

    Ry Nohryb Guest

    On Sep 14, 7:30 am, "P E Schoen" <> wrote:
    > I just recently bought an Archos 70 Internet Tablet which has a 7"
    > multitouch display, Android OS, and WiFi network connection. I was able to
    > make an HTML web page on my laptop computer, with JavaScript to respond to
    > button clicks, just as a demo if the interface. The tablet device was able
    > to connect to the web page on the computer's localhost XAMPP Apache server
    > via the IP address, as well as a copy on my Dreamhost server:http://pstech-inc.com/KeypadDemo.htm
    >
    > What I want to do is make a WiFi enabled device using a Microchip PIC which
    > has an Http/IP stack and can appear as an internet web page. Of course this
    > is done through my WiFi router, and is available world-wide. This may have
    > some usefulness, but really I just want to use the tablet as a smart,
    > programmable GUI for the instrument. So, I think an ad-hoc network between
    > the tablet and the device can be set up.
    >
    > I am not very familiar, yet, with the implementation of the TCP/IP stack for
    > the PIC controller, but that is where the actual hardware will reside that
    > needs to be controlled and monitored. The controls are mostly on/off, or
    > perhaps setting an 8-bit or 12 bit value, and the data may be as simple as
    > integer or floating point values updated 10 times a second, although in some
    > cases it may need to stream as 12 bit values at 2500 samples/second. The
    > resources of the PIC are limited, so it may only be able to handle simple
    > web pages. And I'm not sure if the hardware may be manipulated directly from
    > the web page, or if it will require some sort of server side scripting,
    > which of course implies it has its own server, and can run something like
    > PHP or even Ajax.
    >
    > Another way to implement this may be to configure the Archos tablet as a USB
    > HID (Human Interface Device), instead of the Mass Storage Device as now
    > configured. It would be acceptable to use a USB cable connection rather than
    > wireless, and it may prove more reliable in some of the industrial
    > environments encountered by the instruments as they are used (high voltage,
    > high current, electrical and audible noise, etc).
    >
    > I would like to use HTML with JavaScript and perhaps AJAX or JSON for data
    > and control exchanges, because of the relative ease of programming the GUI,
    > but another alternative is to create an Android application for the device.
    > I did some preliminary work in this direction where the development platform
    > is on my Win7 PC with a Java and JDK environment, through an Eclipse IDE,
    > and an emulator with an Android virtual device. I was able to get the simple
    > "Hello" app working but it seems like a daunting task to go in this
    > direction.
    >
    > There are also the options of using an iPod or iPad, which uses the Apple
    > iOS and their browser. And, there are Win7 tablet PCs that could run an
    > Apache server for the GUI in HTML, and use the USB host to connect to the
    > instrument, which could then have a simple USB device interface (which I've
    > already done). But there is still the question of sending commands and
    > receiving data between the web page and the hardware. Of course, in that
    > case, the PC could simply run an ordinary Windows GUI (which I'm familiar
    > with, using Delphi). The Win7 tablets are about $700, compared to $500 for
    > iPad, and $300 for the Archos. But cost is not a major factor for this
    > application, since this will be replacing a dedicated proprietary touchpad
    > that was originally proposed, and its cost was comparable. But the generic
    > devices have the advantage of being useful for many other applications, and
    > if the customer already has (or wants) such a device, it is essentially
    > "free".
    >
    > This may not be the best place for this discussion, but I had no luck on the
    > webmaster or networking newsgroups. There are many technologies potentially
    > involved in this project, and I have expertise only in a few - mostly the
    > actual hardware and PIC design, and less in HTML, JavaScript, PHP, and
    > networking, in about that order. I just want to do this right, and it may
    > have application for a large range of products. And I know that I should
    > sell my strengths, and purchase my weaknesses, so I plan to enlist the help
    > of expert consultants as needed. But I need enough understanding to know
    > whom I should use and to make sure I'm not misled. Thanks for any ideas and
    > assistance.
    >
    > Paul


    Hi Paul,

    I think there's 3 blocks in this project:

    1 - A tablet/mobile with a browser
    2 - An http server for the controller/GUI page/webApp html+js+css
    3 - A PIC or similar

    1 and 2 use http to communicate via TCP/IP.
    2 and 3 might be the same device, or might not.

    There are linux servers the size of an rj45 female/socket you could
    use for 2, with a serial port you could use to interface to 3.

    Wether or not you want the server and the PIC to be the same device is
    IMO the first thing you've got to decide.
    --
    Jorge.
     
    Ry Nohryb, Sep 21, 2011
    #3
  4. P E Schoen

    P E Schoen Guest

    "Thomas 'PointedEars' Lahn" wrote in message
    news:...

    > P E Schoen wrote:


    >> What I want to do is make a WiFi enabled device with a Microchip PIC
    >> which has an HTTP/IP stack and can appear as an internet web page.


    > Having re-read this several times, something essential does appear to
    > be missing from that sentence for it to make sense. Did you mean
    > "use" (infinitive) instead of "using" (gerund)?


    I replaced "using" with "with".

    >> Of course this is done through my WiFi router, and is available

    > world-wide.


    > You might want to consider establishing a firewall then.


    I received the PICDEM.net2 board last night and finally got it working. I
    had to reprogram the PIC and also load the web pages, and there were some
    other networking problems (I connected it to my computer through a crossover
    cable), but it now appears in my browser as a web page. I can also interact
    with the hardware (LEDs, LCD display, and A/D converter).

    There is a way to set up password access to certain web pages, but I'm not
    sure if that's the same as a firewall. Security issues are what I'll
    probably farm out to those who are more knowledgeable about networking and
    hacking.

    >> This may have some usefulness, but really I just want to use the
    >> tablet as a smart, programmable GUI for the instrument.


    > Now *that* makes sense for once.


    >> So, I think an ad-hoc network between the tablet and the device can be

    > set up.


    > No, the PIC board does not feature a WLAN adapter, and you said you want
    > to use your router.


    > <http://en.wikipedia.org/wiki/Ad-hoc_network>


    At this point I have established the feasibility of the concept, but I still
    need to see if I can set up a wireless network between the board and the
    Android tablet. I have a wireless adapter for the board, but what I got does
    not seem to be a simple plug-in solution. I really don't want to use the
    router. I thought there might be a simple plug-in to convert the Ethernet
    cable jack to WiFi, but what I've seen are essentially small routers. There
    are lots of USB to WiFi adapters, but the demo board doesn't have USB and it
    would have to be set up as a host which could accept Win7 drivers.

    Microchip makes a WiFi "PICtail" for the board but it seems to be a
    discontinued item at Newark. What I have is a WiFi module which connects via
    SPI to the PIC:
    http://ww1.microchip.com/downloads/en/DeviceDoc/70632A.pdf. I think what I
    really need is the AC164132-4 PICtail which is available from Mouser:
    http://www.mouser.com/ProductDetail...=sGAEpiMZZMsRr7brxAGoXbpDJGLtxbLWLdy1IWmzdTE=
    http://ww1.microchip.com/downloads/en/DeviceDoc/51912A.pdf

    >> […]
    >> The resources of the PIC are limited, so it may only be able to handle
    >> simple web pages.


    > Having watched the video demonstration for it, ISTM you are overestimating
    > what the PIC board can do.


    It seems to be able to do everything I need, if I can get it to use WiFi
    instead of Ethernet, and be capable of an ad-hoc wireless connection to the
    Android (or other) tablet device.

    >> And I'm not sure if the hardware may be manipulated directly from the
    >> web page, or if it will require some sort of server side scripting, which

    > of course implies it has its own server, and can run something like PHP
    > or even Ajax.


    > ISTM at the current state of development of client-side Web APIs, a
    > server-side application will be necessary if a "web page" is to be used
    > for the primary user interface.


    There seems to be a special way to use certain variables in the HTML that
    map to memory or I/O on the board. It does not seem to be any sort of
    full-featured server, but all I really need is to do some measurement and
    control as the demo already shows.

    > Developing an Android application with Eclipse and ADT is fairly easy,
    > as ADT provides helpful tools, is well-documented, and there are good
    > tutorials at the Google Web site. BTDT.


    > Also, along with the Starter Kit for Android you got the software library.


    I may look in that direction, but for now universal access via a generic
    tablet device seems best.

    >> This may not be the best place for this discussion,


    > It most certainly is not. This has only very remotely to do with the
    > topic of this newsgroup.


    >> but I had no luck on the webmaster or networking newsgroups.


    > Perhaps you have not been patient enough, you have been asking in the
    > wrong or in too many newsgroups at once, or the wrong question, or, as
    > in the positing I am replying to, no question at all.


    > <http://catb.org/~esr/faqs/smart-questions.html>


    The posts on the other NGs have remained with no replies for more than 10
    days, and they seem to be rather inactive although they have had some posts
    since then.

    >> There are many technologies potentially involved in this project, and I
    >> have expertise only in a few - mostly the actual hardware and PIC
    >> design, and less in HTML, JavaScript, PHP, and networking, in about
    >> that order.


    > You cannot build a steady house on quicksand.


    >> I just want to do this right,


    > There are always alternatives. However, IIUC, as your goal is to make
    > this
    > work on as many as mobile devices as possible, I suggest you develop a Web
    > application that serves as middleware between the mobile device and the
    > PIC
    > board; virtually any mobile device features a Web browser.


    That's the plan ATM. I'm doing this now just to gain some experience, and
    the actual application for this will be after I complete a much simpler
    project which will be done around the end of the year. But I want to add the
    "hooks" to be able to use it as a platform for the more complex devices that
    will need the remote hand-held GUI.

    [..]

    >> and it may have application for a large range of products. And I know
    >> that I should sell my strengths, and purchase my weaknesses, so I plan
    >> to enlist the help of expert consultants as needed. But I need enough
    >> understanding to know whom I should use and to make sure I'm not
    >> misled.


    > You will either have to acquire the knowledge through learning, or trust
    > the individuals who you are employing that they know what they are
    > doing, and that they are doing the best work that they can. Contracts
    > can make sure of the latter.


    > HTH


    Yes, it has been quite helpful. I realize that this is not quite in the
    scope of this NG, or others where I have been active (such as PHP). Maybe
    it's more on topic for the sci.electronics groups, but this is really more
    about networking and configuring stock hardware. I also got some information
    from the Microchip forum. I may need to contact some networking gurus
    locally to make sure that part of the project is solid, especially regarding
    security. I can get almost anything to work. But I need to know how to
    prevent others with malicious intent from breaking it and making it NOT
    work. It's a shame we live in a world where there are so many people
    attacking technology either for sport or for illicit financial gain.

    Thanks. I'll post later, perhaps, when I've made significant progress,
    especially if it involves JavaScript or closely related items. There is some
    JavaScript in the index page of the demo. It's freely available from
    Microchip but I'll include it at the end of this post just for reference.

    Paul

    ======================================== index.htm
    =============================================
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
    <head>
    <title>Microchip TCP/IP Stack Demo App</title>
    <link href="/mchp.css" rel="stylesheet" type="text/css" />
    <script src="/mchp.js" type="text/javascript"></script>
    </head>

    <body>
    <div id="shadow-one"><div id="shadow-two"><div id="shadow-three"><div
    id="shadow-four">
    <div id="page">

    <div style="padding:0 0 5px 5px"><img src="/mchp.gif" alt="Microchip"
    /></div>

    <div id="title"><div class="right">TCP/IP Stack Demo Application</div><span
    id="hello">&nbsp;</span></div>

    <div id="menu">
    <a href="/index.htm">Overview</a>
    <a href="/dynvars.htm">Dynamic Variables</a>
    <a href="/forms.htm">Form Processing</a>
    <a href="/auth.htm">Authentication</a>
    <a href="/cookies.htm">Cookies</a>
    <a href="/upload.htm">File Uploads</a>
    <a href="/email">Send E-mail</a>
    <a href="/dyndns">Dynamic DNS</a>
    <a href="/protect/config.htm">Network Configuration</a>
    <a href="/snmp/snmpconfig.htm">SNMP Configuration</a>
    </div>
    <div id="content">

    <div id="status">
    <div id="loading" style="display:none">Error:<br />Connection to demo
    board was lost.</div>
    <div id="display">
    <span
    style="float:right;font-size:9px;font-weight:normal;padding-top:8px;text-indent:0px">(click
    to toggle)</span>
    <p>LEDs:<br /><span class="leds">
    <a id="led7" onclick="newAJAXCommand('leds.cgi?led=7');">&bull;</a>
    <a id="led6" onclick="newAJAXCommand('leds.cgi?led=6');">&bull;</a>
    <a id="led5" onclick="newAJAXCommand('leds.cgi?led=5');">&bull;</a>
    <a id="led4" onclick="newAJAXCommand('leds.cgi?led=4');">&bull;</a>
    <a id="led3" onclick="newAJAXCommand('leds.cgi?led=3');">&bull;</a>
    <a id="led2" onclick="newAJAXCommand('leds.cgi?led=2');">&bull;</a>
    <a id="led1" onclick="newAJAXCommand('leds.cgi?led=1');">&bull;</a>
    <a id="led0">&bull;</a>
    </span></p>
    <p>Buttons:<br />
    <span id="btn3">?</span> &nbsp;
    <span id="btn2">?</span> &nbsp;
    <span id="btn1">?</span> &nbsp;
    <span id="btn0">?</span></p>
    <p>Potentiometer: <span id="pot0"
    style="font-weight:normal">?</span></p>
    </div>
    </div>

    <h1>Welcome!</h1>

    <table style="padding-left: 10px;">
    <tr><td><b>Stack Version:</b></td><td>&nbsp;</td><td>v5.36</td></tr>
    <tr><td><b>Build Date:</b></td><td>&nbsp;</td><td>Jun 10 2011
    00:08:00</td></tr>
    </table>

    <p>This site demonstrates the power, flexibility, and scalability of an 8,
    16, or 32-bit embedded
    web server. Everything you see is powered by a Microchip PIC
    microcontroller
    running the Microchip TCP/IP Stack.</p>

    <p>On the right you'll see the current status of the demo board. For a
    quick
    example, click the LEDs to toggle the lights on the board. Press the push
    buttons (except MCLR!) or turn the potentiometer and you'll see the status
    update immediately. This examples uses AJAX techniques to provide real-time
    feedback.</p>

    <p>This site is provided as a tutorial for the various features of the HTTP
    web server, including:</p>

    <ul>
    <li><b>Dynamic Variable Substitution</b> - display real-time data</li>
    <li><b>Form Processing</b> - handle input from the client</li>
    <li><b>Authentication</b> - require a user name and password</li>
    <li><b>Cookies</b> - store session state information for richer
    applications</li>
    <li><b>File Uploads</b> - parse files for configuration settings and
    more</li>
    </ul>

    <p>Several example applications are also provided for updating configuration
    parameters, sending e-mails, and controlling the Dynamic DNS client. Thanks
    to
    built-in GZIP compression support, all these tutorials and examples fit in
    the
    32kB on-board EEPROM!</p>

    <p>There is also an ICMP client example running on
    the demo board. Pressing the rightmost button will cause the board to
    send an ICMP Echo Request (a ping) to a Microchip web server. If the
    ping was received and echoed successfully, the response time will be
    displayed on the LCD. An error message will be displayed when attempting
    to use this demo if the board isn't able to connect to the Internet.</p>

    <p>For more information on the Microchip TCP/IP Stack, please refer to
    the TCP/IP Stack API installed with the stack. This manual can be
    launched from your Windows Start menu.</p>

    </div>

    <script type="text/javascript">
    <!--
    // Parses the xmlResponse from status.xml and updates the status box
    function updateStatus(xmlData) {
    var mainstat = document.getElementById('display').style.display;
    var loadstat = document.getElementById('loading').style.display;

    // Check if a timeout occurred
    if(!xmlData)
    {
    mainstat = 'none';
    loadstat = 'inline';
    return;
    }

    // Make sure we're displaying the status display
    mainstat = 'inline';
    loadstat = 'none';

    // Loop over all the LEDs
    for(i = 0; i < 8; i++)
    document.getElementById('led' + i).style.color =
    (getXMLValue(xmlData, 'led' + i) == '1') ? '#090' : '#ddd';

    // Loop over all the buttons
    for(i = 0; i < 4; i++)
    document.getElementById('btn' + i).innerHTML = (getXMLValue(xmlData,
    'btn' + i) == 'up') ? '&Lambda;' : 'V';

    // Update the POT value
    document.getElementById('pot0').innerHTML = getXMLValue(xmlData,
    'pot0');
    }
    setTimeout("newAJAXCommand('status.xml', updateStatus, true)",500);
    //-->
    </script>

    <script type="text/javascript">
    <!--
    document.getElementById('hello').innerHTML = "";
    //-->
    </script>

    <div class="spacer">&nbsp;</div>
    <div id="footer">Copyright &copy; 2010 Microchip Technology, Inc.</div>

    </div></div></div></div></div>

    </body>
    </html>
     
    P E Schoen, Sep 24, 2011
    #4
    1. Advertising

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