[HTML5/Flash CC] Example code to add/run sound programmatically?

Anyone have a code snippet to do this? I managed to make a really stupid work-around for the moment. Created a movieclip in it with nothing but the sound, gave it an instance name and now I can do mcBeep.gotoAndPlay('start') to play it, but for obvious reasons, I'd like to be able to do this without having to leave an empty movieclip lying around on stage...
Thanks in advance!

JLudwig wrote:
Any reason why you call getSourceDataLine() twice? ..Oh wait, I know this one (..snaps fingers. yes) it is because I am a mor0n, and forgot the class level (static) attribute declared earlier in the source when I (re)declared the local attribute and called getSourceDatLine (which was redundant, given the next line, which as you point out also called getSourceDataLine).
There are (at least) two ways to correct this problem.
1) Remove the class level attribute and the second call.
2) Remove the local attribute as well as the first call (all on the same code line).
Method 1 makes more sense, unless you intend to refactor the code to only instantiate a single SDL for however many times the user presses (what was it? Oh yeah..) 'Generate Tone'.
My 'excuse' for my odd programming is that this was 'hacked down' from a longer program to form an SSCCE. I should have paid more attention to the fine details (and perhaps run a lint checker on it).
Thanks for pointing that out. I guess from the fact you spotted it, that you have already corrected the problem. That you thought to report it, gives me confidence that you 'will go far (and be well thought of, besides)' in the open source community.
..This is quite handy, thank you.You're welcome. Thanks for letting us know about the error (OK - the pointless redundancy). Thanks to your report, other people who see this code later, will not have to wonder what (the heck) I was thinking when I did that.
Another thing I noted, now I run the source on a 400MHz laptop (it's hard times, here) is that the logic could be improved. At the speeds that my laptop can feed data into the SDL, the sound that comes out the speakers approximates the sound of flatulence (with embedded static, as a free bonus!).
Edit 1: Changed one descriptive word so that it might get by the net-nanny.
Edited by: AndrewThompson64 on Mar 27, 2008 11:09 PM

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Edited by: KOYYA SUDARSANA NAIDU on Sep 15, 2008 9:09 PM
Edited by: KOYYA SUDARSANA NAIDU on Sep 17, 2008 8:46 PM

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Edited by: KOYYA SUDARSANA NAIDU on Sep 15, 2008 9:09 PM
Edited by: KOYYA SUDARSANA NAIDU on Sep 17, 2008 8:46 PM

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http://forums.ni.com/ni/board/message?board.id=130&message.id=2142
Message Edited by Khalid on 12-28-2005 02:55 PM
Attachments:
doc_process.zip ‏4 KB

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-- Tom
Flex SDK engineer

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      (often not available) */
      sb.append( "\n\nEncoding: \t" +
        urlc.getContentEncoding() );
      sb.append( "\nLength: \t" +
        urlc.getContentLength() );
      // dump the header fields
      sb.append( "\n\nHeader Fields:" );
      Iterator it = urlc.getHeaderFields().
        values().iterator();
      while ( it.hasNext() ) {
        sb.append("\n" + it.next());
      jep.setText( sb.toString() );
    } catch(Exception e) {
      // tell the user what went wrong
      jep.setText( "URL: \t'" + address + "'\n\n" +
        e.toString() );
    JScrollPane jsp = new JScrollPane(jep);
    jsp.setPreferredSize(new Dimension(500,300));
    JOptionPane.showMessageDialog(
      null,
      jsp,
      "Information on the URL",
      JOptionPane.INFORMATION_MESSAGE);
}Example useage;C:\showheader>javac ShowHeaders.java
C:\showheader>java ShowHeaders http://www.physci.org/pc/jtest.jnlp
C:\showheader>java ShowHeaders http://java.sun.com/
C:\showheader>rem: prompt user for an URL
C:\showheader>java ShowHeadersHTH (anybody)

Yes. My apologies for forgetting to mention, it
is just example code that others may find useful.
I like to have 'copies' of any handy little utils,
'stewn about the place' as well, in case I need
them while away from my PC.
..Or to link to them for the benefit of others.
"check the content type with the code shown here.."
This is one way to get a (pretty!) version of it.. ;-)

Validator isn't fired when using example code from chapter 40: Validating Data

When following example code, mentioned in the Flex Developer
Guide on page 1282 is copied into an mxml example application and I
run the application, validation is never fired.
When I have a look at other example code, which is using the
listener- and trigger-property on the validator everything works
fine.
Could you explain why the example code from the Dev-guide
doesn't work as mentioned in the guide?

Nathalie,
I believe you need to specify the "trigger" and "listener"
properties as well. For more information, see the last example on
this page:
http://livedocs.adobe.com/flex/201/html/validators_093_04.html

VISA or IVI drivers, example code?

Hello,
I have an Agilent DSO-X-2004A oscilloscope and I've downloaded two different set's of drivers that work. Here are the links to the drivers.
http://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=9E84674573AF6AB8E0440021287E6A...
http://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=A661BD7B892F06B2E0440021287E6A...
The first one is the Agilent 2000 3000 4000 X-Series drivers, that require only NI VISA-4.6
The second is the Agilent agx2k3k Oscilloscope drivers, that require NI VISA-4.6 or IVI Compliance 4.3
The second one has example codes, which are VERY helpful for me since I am new to LabVIEW. The first one does not have examples, but seems to have more thorough driver library with more scope options to set. Without the examples though, I will have a tough time. Can I find examples for those drivers somewhere?
When mixing blocks from different drivers, I get broken wires with the message "source is IVI session of class, sink is VISA session of class". Maybe if I could resolve that, I could mix the driver blocks.
Thanks
John

The answer is that both driver sets have example code in their .zip files. The first one (Agilent 2000 3000 X-Series) just didn't have the examples show up in the Instrument I/O palet, and the other one (agx2k3k) did. You can add the examples to the palet by following the instructions here:
http://zone.ni.com/reference/en-XX/help/371361H-01/lvhowto/merging_vis_on_palette/
The question of which set to use is still open. The Agilent 2000 3000 X-Series drivers are "Certified LabVIEW Plug and Play (project-style) Instrument Drivers", and the agx2k3k dirvers are "Certified Multi-Enviornment IVI Instrument Drivers"
For a new user like myself, it's very hard to know the differences and how they may effect me down the road. Hopefully someone with more experience can chime in.
- John

Error 200428 in linux example code

Hi All;
I'm trying to use the mx daq-base on a redhat 9.0 system. I have a 6031E installed(pci). I've installed the hardware, then the software and compiled the example code. When I try to run the writeDigPort example I get;
Device indentifier is invalid.
DAQmxBase Error: -200428
lsdaq reports:
NI 603E: "Dev2" (PXIO::16::0)
Nay ideas?
Pat

After further looking into the problem I'm getting an error -200220
here is the suspect code
char chan[] = "dev1/port0:1";
error1= DAQmxBaseCreateDOChan(taskHandle,chan,"",DAQmx_Val_ChanForAllLines);
DAQmxBaseGetExtendedErrorInfo (errBuff, 2048);
printf("\nDAQmxBaseCreateDOChan returned %d %s",error1,errBuff);
This gives the following output
DAQmxBaseCreateTask returned 0
DAQmxBaseCreateDOChan returned -200220 Device identifier is invalid.
Data to write: 0x55
DAQmxBaseGetExtendedErrorInfo returned -200428 Value passed to the Task/Channels In control is invalid.
Anyone have any idea?
Pat

Help with NI-DAQ Example Code

Hi. I've just started working with the NI ISB-6211. This is the first ACD i've ever used, so i'm farily new to this. I have quite a bit of knowledge in programming. After searching through the installation files I found some example C Code that runs in the command prompt. I've modified one quite a bit to get it to do what I want. My question is...
Now, i'm having some issues. I'm trying to get it to print a voltage reading into the command prompt. I've hooked it all up and i've used labview to make sure everything is working as it should (Which it does!). When I compile the C program and run it, instead of returning a voltage it just aquires points, and I really have no idea what these "points" are.
Here is the main part of the example code:
DAQmxErrChk (DAQmxCreateTask("",&taskHandle));
DAQmxErrChk (DAQmxCreateAIVoltageChan(taskHandle,"Dev1/ai0","",DAQmx_Val_Cfg_Default,1.0,10.0,DAQmx_Val_Volts,NULL));
DAQmxErrChk (DAQmxCfgSampClkTiming(taskHandle,"",10000.0,DAQmx_Val_Rising,DAQmx_Val_FiniteSamps,1000));
// DAQmx Start Code
DAQmxErrChk (DAQmxStartTask(taskHandle));
// DAQmx Read Code
DAQmxErrChk (DAQmxReadAnalogF64(taskHandle,1000,10.0,DAQmx_Val_GroupByChannel,data,1000,&read,NULL));
printf("Acquired %d points\n",read);
Error:
And then it just moves down to the exit clause. Is there any documentation anywhere which tells me which DAQ command I need to use to print a continuously updating voltage read out? (Just as a decimal, like 5.21V for example).
Thank you all
John
Solved!
Go to Solution.

John,
The data acquired by DAQmx is written into the array called 'data'. The number of points DAQmx wrote into this array is stored in the variable 'read' which was passed in by reference. To print the values returned, you'd need to loop over the 'data' array, and print each value. See this help topic for an explanation of DAQmxReadAnalogF64.
Dan

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