go into strings of bits on a single byte (best practices)?

Similar Questions

• Creating a string of bits to send through questions series VISA, complete noob here...

  Hi all

  I'm trying now, to browse the values I have on my collection of GUI and with these, construct a message to send through VISA.

  I have the usb-> rs232 cable and NO, and I have attached a connector, with the pins 2 and 3 tied together so that I can loopback and see the messages I send.

  I'm supposed to (from the instructions that I read on a design doc) will send a message of length of 24 bits.

  And please bear with me, I've never worked on this low a level before, nor with the serial interfaces, so I can be completely off on how I'm doing... and this is my

  first really relay with LabView for this project.

  I have some time execution of every 20ms in a loop.

  I have a structure of the event looking for user actions on my front.

  I also breast that everything in a loop, a flat sequence structure... my assumption was, every 20ms, the flat sequence structure would run, except where it is interrupted by an event... that could trigger and then continue with the flat structure...

  I have seen that the entry VISA (and read) take a string.

  So, I started the flat structure with build my string of bits/bytes outgoing... first section is coded hard and then, through the two sequences, loop it and based on the values of the controls within each cluster, I concatenate to my outgoing string... in which case, I send by the visa by the closure, and post it on the message indicator.

  It seems that I can send on only 8 bits at a time through VISA... so, I try to understand (and I wonder people with the req on this part) why they said to send such a long chain... or am I supposed to send each message of 8 bits, one at a time?

  If one bit 8 message at the same time, I wonder how I have let him know when I am finished?  I have heard and read things about start and stop bits, but I don't know where to put them.

  In addition, is the string that I'm supposed to put them together to send something waiting for data series bits/bytes? I saw a reference to a string of bytes while the research, but I Coulnd't ' t find a piece of string byte on the pallets.

  And when I run the present (a simpler example of my real application, simply to show here the parts I am trying to figure)... the message echoing again to me is:

  111000010000\n

  When if I have all the tubes with a value in them... I want to get something new like:

  1110000111111110111111110\n

  I'm also noting that messages do not seem to be transmitting every 20ms... seems only to get a message back when when I trigger an event, as the option switch on the LED.

  In any case, I'm confused, I think that, on certain basic principles and hope someone can maybe send me some links or give me some advice on where I'm wrong so seriously...

  Is my construction of the right to follow path string message?

  Is something wrong with the flow of the program... the events + flat sequence structure?

  I received this property by searching for forums and other papers OR, but I'm stuck sort of and confused I think on some concepts with read/writes...and possible VISA my flow control.

  Any suggestions and/or links GREATLY appreciated.

  Thank you

  Cayenne

  PS. Some asked to record for older versions, so I enclose a copy saved to more 2011 v10

  Cayenne,

  Your sequence structure is not necessary.  You have a dependency on the data, as well as the structure of sequence is not really do anything for you.  Seems to me that what you want to do is to build the table of your clusters that you already own and send the table directly in a > 0? function.  It will accept berries and an array of Boolean output.  You can then use the Boolean array to the Number function to create a U8.  Do this for each of your clusters and integrate the results in a table of U8 and fixed data.  Then use the array of bytes to the string function to get a string to pass in the VISA to write it.  Without loops or the necessary structures.  Any additional manipulation you need, I recommend to the byte level.

• Flatten the FXP into string

  Hi all!

  I have a few numbers FXP:

  • Word: 24 bits
  
  
  • Integers: the 7 bits
  
  
  • Signed

  When I fold it flat - the chain, my resulting string has a length of 8 bytes. I was expecting 3 bytes...

  Could someone explain this behavior?

  Thanks in advance!

  Vincent

  According to the table of numeric data types, FXP is always 64-bit (or 72 bits if you include overflow state).

• Logical operations on a string of bits

  Hi, I have a very simple question that I can't seem to understand.  I'd just like to perform logical operations (AND, GOLD, etc.) on 2 strings of bits that are 24 bits long each, however I can't find in the palette of functions a function that acts as a binary constant.  I see that constant digital and hex functions.  You can somone please let me know where I can find it.  For example, I would AND ' 111111111111111111111111 '& ' 000000000000000000000000'.

  You know the difference between numeric and string data types in LabVIEW? Blue = digital = integer. Pink = string. In the example you linked to, they use an integer constant when the display format is set to "binary". The 'b' of the constant indicates the radix, which in this case is 'binary '. Right-click on a digital constant and you can change its display format. You can select one of the predefined formats or you can specify a by clicking on the option "Advanced Editing Mode. Eligible formats are defined by using LabVIEW. For example

  %b = binary

  % 8 b = binary, using the width of minimum field of 8, fills spaces (for example, '1101')

  % 08 = binary, using 8 minimum field width, filled with zeros (for example, "00001101")

• How to convert a single byte String?

  Purpose:

  Show a result byte on the BB 9900 screen.

  Question:

  How to convert a single byte String?

  Part of the code:

  byte value = con.cpu_config.elementAt (i)

  stop here

  String valuestring = new String (value);

  _rtf. SetText (valueString);

  If you know how to fix it, please share your idea.

  Thank you for your attention,

  String valuestring = new String (new byte [] {value}};)

  _data. Append (valueString);

  _rtf. SetText (_data.toSrting ());

  Solve it.

• Online form needs a single byte charaters

  Hello

  I need to ask a question to a Japanese site that has an optional English translation. When I fill out the application and submit the form, the site rejects saying that the form must be completed with a single-byte characters. How to solve this problem? Thank you!

  You fill out the form in English or Japanese?

• Doc XML to a string fails when the string length is greater than 512 bytes.

  I have been using the following code to write an XML string.  If the resulting string is lower to ~ 512 bytes, the string will be created, if > ~ 512 bytes, the routine does not create the string.  Assuming that the doc contains an XML document:

  Doc CVIXMLDocument = 0;
  HDoc MSXMLObj_IXMLDOMDocument = 0;

  ...

  cvistatus = CVIXMLSaveDocument (doc, 0, "Test1.xml");
  status = CVIXMLGetDocumentActiveXHandle(doc, &hDoc);)

  hRlt = MSXML_IXMLDOMDocumentGetxml (hDoc, & errInfo & strXml);

  The SaveDocument routine still works, the XML file contains the XML, regardless of their size.

  The Getxml routine creates only the XML string in strXml when the length of the string is lower to ~ 512 bytes.

  Does anyone have an idea of the problem?

  Because the string is very long, the ICB debugger cannot display. That's why I was wondering if you were trying to print using put or printf. Because the return value is 0 and the ERRORINFO is also stating the success, I would recheck the chain by printing it to the console or a file.

• Best practices for retrieving a single value from the Oracle Table

  I'm using Oracle Database 11 g Release 11.2.0.3.0.

  I would like to know the best practice to do something like that in a PL/SQL block:

  DECLARE
    v_student_id    student.student_id%TYPE;
BEGIN
    SELECT  student_id
    INTO    v_student_id
    FROM    student
    WHERE   last_name = 'Smith'
    AND     ROWNUM = 1;
END;

  Of course, the problem here is that when there is no success, the NO_DATA_FOUND exception is thrown, which interrupts the execution.  So, what happens if I want to continue despite the exception?

  Yes, I could create a block nested with EXCEPTION section, etc, but it seems awkward for what seems to be a very simple task.

  I've also seen this handled like this:

  DECLARE
    v_student_id    student.student_id%TYPE;
    CURSOR c_student_id IS
        SELECT  student_id
        FROM    student
        WHERE   last_name = 'Smith'
        AND     ROWNUM = 1;
BEGIN
    OPEN c_student_id;
    FETCH c_student_id INTO v_student_id;
    IF c_student_id%NOTFOUND THEN
        DBMS_OUTPUT.PUT_LINE('not found');
    ELSE
        (do stuff)
    END IF;
    CLOSE c_student_id;   
END;

  But it still seems to kill an Ant with a hammer.

  What is the best way?

  Thanks for any help you can give.

  Wayne

  201cbc0d-57b2-483a-89f5-cd8043d0c04b wrote:

  What happens if I want to continue despite the exception?

  It depends on what you want to do.

  You expect only 0 or 1 rank. SELECT INTO waiting for exactly 1 row. In this case, SELECT INTO may not be the best solution.

  What exactly do you do if you return 0 rows?

  If you want to set a variable with a NULL value and continue the treatment, Frank's response looks good, or else use the modular Billy approach.

  If you want to "do things" when you get a line and 'status quo' when you don't get a line, then you can consider a loop FOR:

  declare
    l_empno scott.emp.empno%type := 7789;
    l_ename scott.emp.ename%type;
  begin
    for rec in (
      select ename from scott.emp
      where empno = l_empno
      and rownum = 1
    ) loop
  l_ename := rec.ename;
      dbms_output.put_line('<' || l_ename || '>');
    end loop;
  end;
  /
  

  Note that when no line is found, there is no output at all.

  Post edited by: StewAshton - Oops! I forgot to put the result in l_ename...

• Best practices: multiple partitions on a single vmdk or partition by vmdk

  Hello all-

  I would like to get your opinions on the best practices for the vmdk file server installation program.

  The drive C partition would be allotted for the operating system, while E, F... to store the data of the partitions.

  configuration 1:

  vmdk1 = thick disk of provisioned by a partition of drive c.

  vmdk2 = thickness accommodation provisioned disk partitions E, f...

  Installer 2

  vmdk1 = thick disk of provisioned by a C partition

  vmdk2 = thick disk of provisioned by a partition E

  vmdk3 = thick disk of provisioned by a partition F

  .......

  Also the partitions of multiple data configured as independent + permanent virtual disks due to snapshots. My logic is that OS (C drive) is used for snapshots in test of new software for example while the data partitions act as the storage disks that need to keep the most recent files regardless of the return to an older snapshot. BTW data partitions regularly are Word, excel, photos and so on.

  also, I realize that I could have a single example, E: data with several shared folders partition, but given that each folder is for another Department could cause more trouble when space more and more in the future. Great VMDK could take more time to develop. Not sure again.

  Thank you

  Hello

  in general, virtualization does not change much on the disk IO.

  You can use the same rules that you would use to size a physical server.

  Multiple vmdk mean multiple targets for your I/o load.

  Best solution if IO load/troughput high or low response time should be reached, you create multiple VMDK and spread over several data stores.

  HtH

• Best practices to declare and initialize the string?

  What is the best practice for the way in which strings are declared in a class?
  
  Should it be
  
  private String chBonjour = "";
  
  or I should have initialization in the constructors?

  The constructor of servlet is usually called only once, when the servlet is first accessed. But then again maybe something happens, google, servlet life cycle if you must know.

  But let's take a step back here. It seems you are trying to put the fields in servlets. Don't, don't. When two users extract URL of the servlet at the same time, the fields are shared between the two shots. If you store something like HTTP settings in the fields, parameters two hits' will get truncated. The hits may eventually see each and other parameter values.

  The best way is not to have fields of servlets. (Except the constant "final static" maybe, sometimes rarely something else). Well the pain of simultaneity go, servlet life cycle concerns go away, builders servlet if go, init() disappears usually.

• How to convert a single byte in UTF8 characters

  Hello
  I have problem with the export of data to the file with UTF8 encoding.
  
  I varchar2 columns in the database with NLS_CHARACTERSET = EE8ISO8859P2 (Czech Republic) and I need to export the columns in the file with UTF8 encoding.
  
  So I need to make a single byte FOR byte conversion multi.
  
  I tried sql CONVERT (CONVERT ('my_char', 'UTF8') command) in the forms, but without effect. The encoding of the file created is UTF8, but the characters are corupted.
  
  Registry settings on my client is NLS_LANG = REPUBLIC of AMERICAN_CZECH. EE8MSWIN1250
  
  Could you tell me some thing how to export data from the column with characters on a single byte of file with UTF8 encoding?
  
  I use Text_io package to write in the shapefile.
  
  Thank you

  my last try so if you can afford an empty space in your output file in the fist line. I tested hv it works

  create a foo.txt with empty space and then add the file as a normal procedure or try to re - open the file later and replace the space in the first row using SUBSTR etc etc.

  TEXT_IO has very limited functionality try to package DDE it might solve your problem

  Good luck
  Bangoura

• do a lot of individual bits in a single element

  This is about as basic as you can get, but I can't seem to understand. Here's an example image:

  

  I have a figure which is composed of a number of parts. For example, the front foot is a room separate from the body. I have them made look all of a piece with a lot of match-fixing and patching of pristine locations. How can I get the leg to be of one piece with the body with a filling, a sudden, keeping my well overlapping lines?

  In a larger sense, how to make so that the entire image into a United whole? Have the nose and Paws and tail all welded to the body so it forms an object sweeps. Say I want to animate it, it seems, should be tied together for not be undone. I keep reading all the instructions for pathfinder and related tools, but I can't seem to get a handle on how to unite the figure into a single object to manipulate.

  Here's another one. Here, the figure is filled with a number of areas of color, who are their own entity. How can I get the body and it is that various fill pieces like an object? Now to change anything, I have to change the black, white and a line falling on it. Which may not be right :/

  

  So I need help on both feel individual leg-joined-to-body and also in a broader sense of the brand-it-figure-a-thing. Clearly, Miss me some great main unifier here. Thanks for any help.

  It all seems quite normal. Almost as if I had made myself :-)

  It seems that if you have a few stray points (all these fixed little round eyes).

  Just go to Select > object > stray Points and remove them.

  In your case, the overlap is nothing to fear, but you CAN of course copy sections of paths and glue them in place (Cmd + F or Cmd + B) to use them again (no need to redraw).

  I guess you could do the design together in a symbol (completely indestructible except if developed) but as I said, for a regular group should be all you need.

• Windows 7 media center languages entered into version 64 bit problem

  Hello

  I use windows 7 64-bit edition as my desktop of the OS. Until a few months ago, I used the 32-bit version of the system. I use English laguages (United States) and in Hebrew.

  I'm a media center (my office is connected to a HD TV and I have 2 Extenders in other parts of the House). When you use the windows Vista and Windows 7 32 bit media center Media Center, I was able to use English and Hebrew on the application media center for nothing - music/video and research names in both languages. When I migrated a couple of months in the 64 bit version of windows 7 (clean install, no upgrade) I had again running and Windows media center to the top. English and Hebrew are used for display (video/music names), but I can find only in English. The option on the keyboard to change the language disappeared. This can be corrected?

  If you can help, please do, as I couldn't find any information relating to this problem.

  Thank you

  Yaron

  Well, figured out.

  I had to modify the new user setting language support. When you set the keyboard and language support, there is an advance tab which will allow you to copy your profile of language support for new user accounts. I did and then disconnected the server extender, erased any user account (MCX? ones) and then reconnected the Extender. a new user has been created, and now it works well.

  Thank you all for the evidence you provided.

  Yaron

• cRIO timestamp into string

  During the first boot of a cRIO-9075, it shows in a TimeStamp, a time indicator system around 16:00 on 31 December 1969.

  If I take this timestamp value and pass it in a "Format Date/time string function" to get a string representation of the time stamp, the date and time the chain gets really messed up. The same code to run on a Windows system works perfectly.

  This could be the cause of the function format-stamp-to-string to fail on the cRIO?

  

  What time zone are you? GMT - 8?

  This resembles the cRIO gets reset at the time Unix GMT January 1, 1970 and there is no time set for this server update at the present time. The Unix timestamp code in LabVIEW can not really deal with dates before this point in time, as far as Unix is concerned the big bang, in which the world was created and computers began to appear that's happened right now

  Windows at the time of the January 1, 1601 and your date of 1969 is well above that and there is absolutely no problem to deal with this date there.

• 64-BIT Windows 8 single language to Windows 8.1 update

  I understand that I can receive a free upgrade but is not easy to find a URL to download from. Is there a link to a repository I can do download and install?  Of course, my Dell Inspiron 3521 has a key of Windows embedded in its firmware, so I shouldn't have need an activation code be?

  I thank very you much for your advice and your efforts.  I really appreciate the willingness to help on this forum. :)

  Microsoft has lost it completely. Not even Vista could poison me but Windows 8 and beyond seems to be out of tangents which will take users on the roads better not fly.  I think that my experience today has convinced me to migrate to Linux completely.  For the record, this humble Dell little performs rather well on different distributions of Linux, such as Zorin, mint XFCe 15, mint 15 MATE 64 - bit, mint cinnamon 15 (and I did look like a Mac) as well as PearOS.  All material work rather well, there is no compatibility issues, it is extremely robust and stable, but also very safe to use. Some reason that Linux is virtually free of viruses because of a much smaller basic installation.  Truth is that security lies in its operation; It would be just as safe even if all 7 billion have been using it.

  Dell comes with Ubuntu on some models, even on Alienware and I can certainly recommend. The learning curve is there and noobs need to learn new tricks, but the same can be said for MS Windows and MS Office.  Best of all is that every piece of software comes free and updates are also free.  The upgrade or installation is as easy as check a box and a click of the mouse.  It installs seamlessly and rarely do we need a reboot.

  My Linux does not use never more than 1 GB of RAM and it starts in less than 180 MB!