analoginput, starting in matlab - matlab

I am trying to display audio at real time using, analoginput, this is the code:
function Cspe()
daq_object = analoginput('winsound');
chan = addchannel(daq_object,1);
num_samples=1000;
set(daq_object,'SamplesPerTrigger',inf,'SamplesAcquiredFcnCount',num_samples,...
'SamplesAcquiredFcn',{#up,num_samples});
if(strcmp(daq_object.running,'On'))
return;
else
start(daq_object);
end
end
function up(num_samples)
data=getdata(daq_object,num_samples);
a=[1:num_samples];
plot(a,data);
drawnow;
end
but it keeps on giving me errors saying Winsound is already in use. i am not so sure what the problem is?, i made sure that if the device is on/running, don't do anything.

I am not sure how to just add a comment (or if I am just not able to yet)so here is my 'answer':
I had a similar problem with a data acquisition board using windows 7. The way to usually get around this problem is making sure you run the program as an administrator.
In windows 7 to do this you simply right click on your shortcut and select 'Run as administrator' or change the advanced properties of the shortcut to run the program as an administrator.
If you are in windows XP, you may want to check to see if your user account has administrative privileges (i.e. check Control Panel > Users, or just try and write something to a system folder).
If these do not work, then another program is likely using the sound card, this has sometimes happened with certain audio suites for me, and was solved by exiting the programs (or uninstalling them, possibly).
I realize this is long after the question was posted, but maybe this will be useful to someone else!

Related

Generally what would cause Unity Editor freezes and not responding?

I have encountered a critical issue that Unity Editor freezes. I've spent many hours debugging step by step of my codes but still can't find where the problem is. So I think maybe I should try thinking from another angle, generally speaking what reasons would cause Unity Editor freezes and not responding?
I can't find a general case discussion about this topic.
From my experience, infinite loop is one reason for sure. Deadlock is critical issue, but not sure if it causes Unity Editor freezes. Unity Editor bug that I encountered only makes the whole editor crashes, instead of freezing. Any other experiences are welcomed. Thank you!
In such case, what kind of tools or methods could I use to debug it? Right now since the editor freezes I can't use "print" to find out what happens after it freezes. So I use Visual studio to debug the Editor thread, in this way I can see all the prints that I wrote. It appears the game is still running, only the editor not responding. And I can use VS click "attach to Unity and play" and put some debugging points, then debug step by step.
The first thing that I would check out is for an infinite loop. At the hang/freeze moment, you can attatch the debugger of your choice and pause the execution. In the case that it is an infinite loop that it is executing, at the exec time pause you might find the execution in a forever running while (true) {...}
Other thing that I would check is the plugins in use. Several Unity plugins like Parse, FMOD, UMP (Universal Media Player), ZFBrowser, or Embedded Browser are using native threads. It’s an issue when a plugin ends up attaching a native thread to the runtime, which then does blocking calls to the OS. This means Unity can't interrupt that thread for the debugger (or domain reload) and hang. Source
To check that you can check the active threads in the visual studio command window af the freeze is reproduced:
View->OtherWindows->CommandWindow and type in this command:
Debug.ListCallStack /AllThreads /ShowExternalCode
In the stack you can check if some thread is there with no need, or if its related with the plugins mentioned above.
Also an interesting point is to check in the windows task manager (in the case that you are using windows) if the CPU usage is to 0%. It can lead you to the type of hang that is taking place.
Good luck.
Edit: I forgot to mention, you need to check also the unity logfiles
I notice this all the time, and its super frustrating.
Unfortunately, this could be any number of issues. I notice this issue most often when working in projects that are made for the Universal Windows Platform.
Try using the Task manager to monitor specific processes / threads running.
Some follow up questions:
What platform is your project currently targeting?
What version of Unity are you running? Have you tried other versions?
What are your computers specs? Is the OS up to date? Graphics Drivers?
Does it happen (or happen more often) when an external code editor is open? Perhaps try going to Preferences>External Editor > Regenerate Project files.
Are you using Unity Collab by chance? I've had issues where collab is stuck trying to communicate with Unity Servers / looking for changes. Try logging out of your Unity account through the editor, and log back in.
Have you tried looking for a Unity editor crash dump, or error log files? I think they can be found here C:\Users\username\AppData\LocalLow\Unity by default. Those files may give you more specific data concerning your problem.
Unity's new versions are getting more slower and slower. From my experience 2019 versions are the best and more stable.
I solved my issue. It's fundamentally an infinite loop.
It's not a simple case such as "while(true)". I'll try to explain.
My game was a PvP game, and I'm making a local AI. Usually my design pattern works fine, however I just turned off the simulation of "AI thinking time", and since the AI codes and server codes all run in local mode, the transmitting of data between server and client are replaced by local method call(meaning instantly executed before everything else).
There is a loophole in my server code. I use "Update" and a flag on server to change a specific game state, however in this particular case, it got into an infinite loop because the local method call is executed before the "Update". And because my AI now doesn't need real time to "think", it "acts" and transmits the event data to server right away. And since the transmitting doesn't need time any more, it calls the server method instantly, hence forming the infinite loop.

This error keeps showing up on my desktop

This Javascript error keeps showing up on my desktop, and when i delete it another one will pop up.
Can anybody with knowledge about this please help me?
Oh the image is on Danish so yeah. Translated it says that there was a script-error with the script, and asks if i still want to play the script on this site.
Solution Found
Go to Control Panel
Go to Programs and Functions
See if there is any program that refers to the url-error-message you got, and if there is, delete it.
Note If the program is a program that you need to have for running your system or just an important program, don't delete it, there could be other ways to fix it.
Other ways to fix it
1. Start up the installer that you used to install the program, if there is a button that says "Repair software/program" or something like that; tap the button.
If there isn't a button that says "Repair software/program" (or something like that); try to install the program again.

Flash not running debugger any more. Possible socket issue in Windows-10?

Bounty Update
I am leaving the question essentially the same, but I just want to point out at the beginning here that I'm most interested in help trying to get the socket between flash (Adobe Animate) and the native debugger working again, as I believe that is the issue I'm having. Or is it a socket between flash and Windows?
Original Question
I've apparently turned something off? Even when I write really bad code (like trying to call a function that isn't there or divide an integer into a fraction), the flash player boots, shows a background color and stops there. No messages in the output window or compiler errors window. If I fix my code, it all runs fine, but for about 30 minutes (ever since I started trying to work with bitmaps for a sprite sheet) I get no runtime errors no matter what kind of mistake I type in my code. Anyone know how to turn it back on?
I've checked my actionscript settings and I have both warning mode and strict mode checked on.
Could it be a socket issue? I admit I have little to no experience working with sockets and only a surface understanding of what that even means. I've added the socket tag. If someone can see that this is clearly nothing to do with sockets, by all means, I'll remove the tag.
UPDATE: 6/22/16
I just reinstalled Adobe Animate CC 2015.2 and no change. I'll try compiling it in flash builder when I get a chance to help pigeon hole the problem. (Edit 6/24: flash builder worked! But my trial version expired the next day so is no longer a viable option).
And I just tried something in the command prompt in Windows 10 as an administrator:
netsh winsock reset catalog
netsh int ip reset reset.log hit
which I found another user on flashdevelop.org used to fix a similar issue, but no change.
And I just tried debugging in Flash Builder. It worked fine (debugger caught bugs) but my trial version expired the next day.
update 6/24
I've tried launching debugger for AIR from within the Adobe Animate CC IDE and it works fine if there are no bugs; it fails to do anything visible (no Iphone emulator, no swf window) if I put a typo or error in the code.
I also just deleted winsock and winsock2, rebooted Windows, then reinstalled winsock and winsock2. No change.
update 6/25
Just tried a system restore in Windows to set all my files and settings and drivers etc. to the way it was a week and a half ago... Also completely uninstalled all Adobe products and reinstalled. No change. I can only imagine that wiping my hard drive and reinstalling Windows would do the trick, but come on, it hasn't come to that has it?
As VC.One suggested, I checked the compile error window (cannot believe I didn't check before! Maybe when I checked before there were no compile errors... Only runtime errors?) and the errors are showing up there. Does this mean that it's catching compile errors but just not runtime errors?
When you force/test a runtime error... make sure you check
Compiler Errors (ALT+F2) and also Output (F2). By Output I mean the window that shows traces (and runtime issues). One of those two should have some feedback for you.
A possible solution is to save a new Workspace. So with those windows for Compiler Errors and Output both open (or tabbed, I tab them next to my Timeline) go to Window (in top options like File/Edit/Debug etc) and choose Workspace, then into that you choose New Workspace. Give it a name in the pop-up and okay everything.
Flash should always load that current workspace (next time, go to Workspace option again, check that your specified workspace [by name] has a tick next to it...).
Possible pitfalls:
1 - Use the debug player
2 - Make sure there isn't somewhere a try/catch enclosing the portion of code that triggers the event that may lead to an error
3 - Socket issue: may be exported in debug mode but swf cannot connect to debugger (it waits in a blank state for 60 seconds I guess)
4 - Does it compile ok? If there are compilation errors you may get an SWF anyway but then it will not start
...

Suggestions for a bad PowerShell Script

We have a legacy server service running on a Windows 7 desktop that keeps crashing with a popup window reporting a memory error. The popup stops all processing on the machine. Once the "OK" button is clicked on the popup the system recovers and moves on. The root problem appears to be inside a compiled DLL that the application uses.
This popup usually happens between 9pm and 11pm every couple days.
It happens when no one is signed into the PC, so the popup displays in front of the CTRL+ALT+Delete message for signing in.
I can click OK and it continues processing, signing into the computer.
CHALLENGE:
This is a legacy application that will be replaced when budget allows (maybe next Summer) so there is no budget for upgrade or paying a consultant to fix the root problem.
All we need to do is click the OK button when the "Application Popup" event is thrown (logged in the Event Manager)
I know that it would be WRONG to write a script to satisfy the popup. Fixing the root cause is the CORRECT action.. but we have no support to spend money at this time. And since it's a compiled DLL, we can't fix the code.
Is there a PowerShell script that could:
Watch for a specific event "Application Popup" and if it occurs simulate pressing the ENTER key?
Run in the background, signed out of a user account.
If PowerShell isn't the answer, is there a better macro or script tool to get us by?
I know it's "bad practice" but we just need to get along until we get some budget dollars.
Powershell probably isn't the best answer in this case. I'd suggest using something like AutoIt (the WinWaitActive function would be useful in your case).
I have used AutoIt in the past and have found it very useful for Windows GUI automation.

Is there a way to automatically log onto a Windows XP machine at specific time?

How to set a specific logon time for a specific user on Windows XP?
For example, the computer is an "always on machine" and most of the time no one is logged on. I want to set a time for my user to log on, without someone actually having to be in front of the machine. I've tried a workaround with the built-in auto logon function (control userpassword2), but I still need a secure system as I'm not the only user, and would still want a password even if I was the only user.
I have searched for third party software, but to no avail. I've a good knowledge of batch and Python scripting and a little of Java, so any pointers with any of those would help.
How can it be "secure" if it logs you on without you being there? Surely it would be better for it to wait for you to type in a password (i.e. the login prompt)?
If you want a fast "startup" time, then you can lock the workstation (ctrl+alt+del to open the Task Manager and then click 'Lock'. This shows a dialog just like the login prompt, but when you enter your password you instantly continue your existing session). Or if you want to be more eco friendly, put your PC into Sleep mode, which most PCs will return from (again with an optional password prompt) in less than 5 seconds.
One way I just thought of: Run a Vnc Server, and hack into an open source viewer program. Then you can rig it with some code to pass keyboard commands back into the computer, maybe implement some screen scraping to make sure it only does it when appropriate.
But seriously, there has to be a better way. Why are you trying to do this?