How to retrieve data from the serial port and decode it each 2 bytes is a long variable and 1 frame is about 6 bytes

I send the frame by a microcontroller ( 8bits) the fram contains 6 bytes, 2bytes conform a long variable, I want to decode the frame and make operations with these long variables and then plot them

Hey jpvans,
I would first suggest using NI-VISA to talk to the serial port. Then, you can use the LabVIEW Type Cast or the Flatten to String and UnFlatten From String VIs to convert the data.
You can setup the read so that it reads just two characters at a time to form an individual long or you can set the read up to read it all and then use the string functions like String Subset to cut the information into chunks.
I hope this helps out.
JoshuaP

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Project select data from the serial port

Hi everyone,
The project is about use labview to receive data from a serial
port wirelessly. The serial port will receive two values (X1 and X2) every 10
minutes. I want to use those two values as two inputs for my formula. How to
make selection? Many thanks.
Baicy
Solved!
Go to Solution.
Attachments:
port read.png ‏23 KB

Scan From String.
Using the first option, and putting some numbers in for the zeroes so it shows some kind of meaningful result.
Attachments:
Example_VI.png ‏12 KB

How to retrieve data from the HTML form in the JEditorPane?

I could quite easily use JEditorPane to render and display a simple HTML file.
My HTML looks like this:
<html>
<head>
<title> simple form</title>
</head>
<body bgcolor="cccccc">
<center><h1>SURVEY THING</h1>
</center>
<form id="survey">
<p>1.Type something in.</p>
<textarea cols=25 rows=8>
</textarea>
<BR>
<p>2.Pick ONLY one.</p>
<input type="radio" name="thing" value="0" Checked> NO choice <BR>
<input type="radio" name="thing" value="1"> First choice <BR>
<input type="radio" name="thing" value="2"> Second choice
<BR>
<p>3.Pick all you like.</p>
<input type="checkbox" name="stuff" value="A"> A <BR>
<input type="checkbox" name="stuff" value="B"> B <BR>
<input type="checkbox" name="stuff" value="C"> C <BR>
<input type="submit" value="give data">
<input type="reset" value="do clensing">
</form>
</body>
</html>
It gets diplayed fine and I can type in text, select radio buttons (they behave mutualy-exclusive,
as they should) and check checkboxes.
The problem I have is with retrieving the values which were entered into the form.
If I, after editing, try to write the html to the file using HTMLWriter,
it records the changes I made into the textarea, however all the radio and checkbox selections are lost.
Maybe the problem is that when I enter the values I do not use any methods like
insertBeforeStart and so on, but I believe I shouldn't need to use them to populate a form.
Especially I never change the structure of the HTML.
Also, when I try to traverse the Element tree and see the input elements attributes,
I can never see a change in the entered values. However it is probably b/c I am traversing through
the model and the changes are in the view (just a guess.)
Anyway, if anybody could direct me onto the right path: how to retrieve the values typed in the form,
or if it is possible at all in the JEditorPane, I would greatly appreciate.
thanks
maciej
PS. I have seen the answer to a similar question posted some time last year. However, I am trying
to find a soultion which allows forms/surveys to be built by people who have no java and only basic
html knwledge. And Axualize way is probably a little bit too "high-tech."

Maybe helpful for u.
import java.awt.*;
import java.awt.event.*;
import java.awt.Container;
import java.util.*;
import javax.swing.*;
import javax.swing.text.*;
import javax.swing.text.html.*;
public class TestHtmlInput extends JFrame {
     JEditorPane pane=new JEditorPane();
     public TestHtmlInput() {
          super();
          pane.setEditorKit(new HTMLEditorKit());
          pane.setText("<HTML><BODY><FORM>" +
          "<p>1.Input your name.</p>" +
          "<INPUT TYPE='text' name='firstName'>" +
          "<p>2.Input your information.</p>" +
          "<TEXTAREA rows='20' name='StationDescriptions' cols='100'>" +
          "<p>3.Pick ONLY one.</p>" +
          "<input type='radio' name='thing' value='0' Checked> NO choice <BR>" +
          "<input type='radio' name='thing' value='1'> First choice <BR>" +
          "<input type='radio' name='thing' value='2'> Second Choice <BR>" +
          "<p>4.Pick all you like.</p>" +
          "<input type='checkbox' name='stuff' value='A'> A <BR>" +
          "<input type='checkbox' name='stuff' value='B'> B <BR>" +
          "<input type='checkbox' name='stuff' value='C'> C <BR>" +
          "<p>5.Choose your nationality.</p>" +
          "<select name='natio'>" +
          "<option>12</option>" +
          "<option selected>13</option>" +
          "</select>" +
          "</FORM></BODY></HTML>");
          this.getContentPane().add(new JScrollPane(pane));
          JButton b=new JButton("print firstName text");
          b.addActionListener(new ActionListener() {
               public void actionPerformed(ActionEvent e) {
                    System.out.println("Number of Components in JTextPane: " + pane.getComponentCount());
                    for (int i = 0; i < pane.getComponentCount(); i++) {
                         //NOTE FOR BELOW: know its a Container since all Components inside a JTextPane are instances of the inner class
                         //ComponentView$Invalidator which is a subclass of the Container Class (ComponentView$Invalidator extends Container)
                         Container c = (Container)pane.getComponent(i);
                         //the component of this containers will be the Swing equivalents of the HTML Form fields (JButton, JTextField, etc.)
                         //Get the # of components inside the ComponentView$Invalidator (the above container)
                         Component swingComponentOfHTMLInputType = c.getComponent(0);
                         //each ComponentView$Invalidator will only have one component at array base 0
                         //DISPLAY OF WHAT JAVA CLASS TYPE THE COMPONENT IS
                         System.out.println(i + ": " + swingComponentOfHTMLInputType.getClass().getName());
                         //this will show of what type the Component is (JTextField, JRadioButton, etc.)
                         if (swingComponentOfHTMLInputType instanceof JTextField) {
                              JTextField tf = (JTextField)swingComponentOfHTMLInputType;
                              //downcast and we have the reference to the component now!! :)
                              System.out.println(" Text: " + tf.getText());
                              tf.setText("JTextField found!");
                         } else if (swingComponentOfHTMLInputType instanceof JButton) {
                         } else if (swingComponentOfHTMLInputType instanceof JComboBox) {
                                 JComboBox combo = (JComboBox)swingComponentOfHTMLInputType;
                                 System.out.println(" Selected index: " + combo.getSelectedIndex());
                            } else if (swingComponentOfHTMLInputType instanceof JRadioButton) {
                                 JRadioButton radio = (JRadioButton)swingComponentOfHTMLInputType;
                                 System.out.println(" Selected: " + new Boolean(radio.isSelected()).toString());
                         } else if (swingComponentOfHTMLInputType instanceof JCheckBox) {
                                 JCheckBox check = (JCheckBox)swingComponentOfHTMLInputType;
                                 check.setSelected(true);
                                 System.out.println(" Selected: " + new Boolean(check.isSelected()).toString());
                         } else if (swingComponentOfHTMLInputType instanceof JScrollPane) {
                              JScrollPane pane = (JScrollPane)swingComponentOfHTMLInputType;
                              for (int j=0; j<pane.getComponentCount(); j++) {
                                   //JTextArea area = (JTextArea)swingComponentOfHTMLInputType.getComponent(0);
                                   Container c2 = (Container)pane.getComponent(j);
                                   for (int k=0; k<c2.getComponentCount(); k++) {
                                        Component c3 = (Component)c2.getComponent(k);
                                        if (c3 instanceof JTextArea) {
                                             JTextArea area = (JTextArea)c3;
                                             System.out.println(" " + area.getClass().getName());
                                             System.out.println("     Text: " + area.getText());
                                             area.setText("JTextArea found!");
                         } else {
          this.getContentPane().add(b,BorderLayout.SOUTH);
     public static void main(String args[]) {
          TestHtmlInput app = new TestHtmlInput();
          app.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
          app.setSize( 400, 900 );
          app.setVisible( true );
}

How to retrieve data from the Database after deleting rows from VO ?

Hello,
I am using Jdeveloper 11.1.2.1.0
I have a master and a child .
So according my use case when a value in the master vo changes the corresponding child has to be deleted.
but when i change back to any other value i want to undo the delete operation and get back the values in the child.
Is there any way to do it?
Regards,
Nigel.
Edited by: Nigel Thomas on Mar 29, 2012 5:07 AM
Edited by: Nigel Thomas on Mar 29, 2012 5:09 AM

Hi all,
I want to do a validation based on a SelectOneChoice List Value.
Based on which value in the select one choice is being selected, thedata from the VO should be DELETED or NOT-DELETED.
To do this I wrote a Managed Bean and the delete part is working fine if a particular value of the SelectOneChoice is selected.
Since the rows are deleted from the VO, after I change the SelectOneChoice value to the previous one I cannot retrieve the rows.
I thought of two ways:
1. As the Deleting option in the SelectOneChoice is selected the rows should be deleted from the VO and when reverted back to not-Deleting option the Rollback of Transaction method written in the Managed Bean should take place.
2. As the Deleting option is selected the data should be deleted from the VO and when reverted back to non-Deleting option, a query should be made from the Database.
The first plan was dropped because it is not VO-specific. If there are more than 1 VO in the page then whatever changes are made in the page will be reverted back as soon ad Rollback of transaction is done.
So the now i am left to go with the second plan.
Is there any way to implement the second plan?
If so...Will it compromise the performance of the application?
Or else, Is there any other way to implement my Use-Case ???
Regards,
Nigel.

Hello!!!I need to read some data from the serial port and processing these, at the same time I want to see the process that I am doing.

I read the data without problems, and I see them using Waveform graph, the problem is that I want to see the real time stamps, but in the graph appears 2:00:00,000 and 01/01/04, so the date and the time is wrong !!
Can I change this?
I am thinking that the problem is that I have to adquire the data and the time stamps ( using Get date/time) and after, I have to represent both!!!
Thanks!!!

Hello,
As you probably know a waveform is made of a beginning time (t0), a time difference between each value (dt) and an array of values (Y). Your problem is probably that you don't initialize t0. Use the Vi 'Waveform->Build a waveform' to initialize the time of the waveform.
Hope this helps !
Julien

How to read and write from the serial port using java

can anyone tel me how to capture data from a serial port and display on the screen and also store it in a database.

Java Comm API, JDBC

I want to transfer data through the serial port in the same coding that hyperterminal uses. How can i do it?

The serial port seems to be working, and labview seems to be sending the data, but the problem is in which format does it send the data, because in hyperterminal i just input the string "JDX" and it sends it to my device, with labview it sends something but my device does not recognize it.

nobuto wrote:
> I want to transfer data through the serial port in the same coding
> that hyperterminal uses. How can i do it?
>
> The serial port seems to be working, and labview seems to be sending
> the data, but the problem is in which format does it send the data,
> because in hyperterminal i just input the string "JDX" and it sends it
> to my device, with labview it sends something but my device does not
> recognize it.
Hyperterminal adds the carriage return/line feed to the string which is
generated by the return key to send out the current line. LabVIEW simply
sends out what you tell it, so try to set the string to "Show \ Display"
format and add a \r or \n or \r\n to the command you want to send out.
Assumes of course that you set the right baudr
ate/bits/parity etc in
LabVIEW with the VISA property node, when opening the serial port.
Rolf Kalbermatter
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

I've got the labview vi written to read my IMU data from a serial port in COM1 and it displays onto the table on the front panel. I'm having trouble getting this data onto an excel spreadsheet. Any ideas?

I've got the labview vi written to read my IMU data from a serial port in COM1 and it displays onto the table on the front panel. I'm having trouble getting this data onto an excel spreadsheet. Any ideas? Right now my data will collect one reading instead of continuously reading my IMU which displays data in a continuous stream.
Thanks
Attachments:
Read_IMU_Drew.vi ‏21 KB

Hi
Your vi is in 2009 version, which i am unable to open in 8.6
However, if you want your data to be saved in excel sheet, here is the VI
Somil Gautam
Think Weird
Attachments:
save to excel.vi ‏12 KB

How to retrieve data from domain(Value Range) of the table

hi
how to retrieve data from domain(Value Range) of the table
thanks

Hello,
You can try using the FM: DOMAIN_VALUE_GET TB_DOMAINVALUES_GET.
BR,
Suhas
Edited by: Suhas Saha on Mar 24, 2009 10:08 AM

Why does a standalone program created in Labview 8.5 try connecting to the internet when the program only reads data through the serial port? Firewalls object to progams that contact the internet without permission.

why does a standalone program created in Labview 8.5 try connecting to the internet when the program only reads data through the serial port? Firewalls object to progams that contact the internet without permission.
The created program is not performing a command I have written when it tries to connect to the internet, it must be Labview that is doing it. How do I stop this from happening?
Any help would be very appreciated.

It looks that way..
"When LabVIEW starts it contacts the service
locator to removes all services for itself. This request is triggering
the firewall.This is done in case there were services that were not
unregistered the last time LabVIEW executed- for example from VIs that
didn't clean up after themselves"
This is not yet fixed in LV2009.
Message Edited by Ray.R on 11-04-2009 12:25 PM

TCP packet out of state: First packet isn't SYN & Outlook is trying to retrieve data from the Microsoft Exchange Server [CAS-ARray]

We are transitioning from Exchange 2003 to Exchange 2010. We found Outlook online mode (non-cached mode) have many warning "Outlook is trying to retrieve data from the Microsoft Exchange Server [CAS-ARray]", usually happen when users tried to open
address book but sometimes even normal operation like click the Send button. The problem does not affect OWA and extremely rare when Outlook is running in cached mode. Check the firewall logs, we notice a lot of "TCP Packet Out of State" drops.
We have a lot from the CAS/HT to DC/GC on TCP_3268 and LDAP. And the errors are "TCP packet out of state: First packet isn't SYN" with tcp_flags FIN-ACK, PUSH-ACK.
We also have a lot from CAS/HT to the Outlook Clients on the static RPC port (TCP_59933). And the errors are "TCP packet out of state: First packet isn't SYN" with tcp_flags FIN-ACK, PUSH-ACK and RST-ACK, ACK.
This happens even on Outlook 2010 which I though it has TCP Keep Alive implmented to keep the session active within 1 hour.
Can somebody tell me if these out-of-state are the cause of our problem? And how to fix it?
THANK 1,000,000

Hello AndyHWC,
I did some consulting with our CAS team and received the following feedback to your post:
It is difficult to determine what is causing resets without seeing the captures first hand however, the concern is that you are seeing dropped packets on the firewall logs. Where is this firewall located?
Based on the description "Check the firewall logs, we notice a lot of "TCP Packet Out of State" drops." and "We have a lot from the CAS/HT to DC/GC on TCP_3268 and
LDAP." indicates to me that the firewall is between CAS and GC. This not supported under any circumstances and would explain the issue they are seeing with clients trying to "retrieve data from the GC".
If there is not a firewall between the GC and CAS then a Microsoft support engineer would need to have concurrent Netmon Captures from client, CAS, GC during the
issue to analyze. If only one GC exists consider adding another GC to handle the client requests and for fault tolerance.
Also verify that all NIC card drivers are updated to the latest driver version
More information about firewalls with Exchange 2007/2010
http://msexchangeteam.com/archive/2009/10/21/452929.aspx
http://technet.microsoft.com/en-us/library/bb232184(EXCHG.80).aspx
You can install the Client Access server role on an Exchange 2007 computer that is running any other server roles except for the Edge Transport server role. You
cannot install the Client Access server role on a computer that is installed in a cluster. Installation of a Client Access server in a perimeter network is not supported.
http://technet.microsoft.com/en-us/library/dd577077(EXCHG.80).aspx
“The Installation of a Client Access Server in a Perimeter Network Is Not Supported
Issue You may want to install an Exchange 2007 Client Access server in a perimeter network. However, this type of installation is not supported in Exchange
2007.
Cause The Exchange 2007 Client Access server role is not supported in any configuration in which a firewall is located between the Client Access server
and a Mailbox server or a domain controller. This includes firewall devices, firewall programs, or any program or device that is designed to restrict traffic between two network locations.
For correct operation, Client Access servers require typical domain connectivity to domain controllers and global catalog servers. Because any devices
or programs that restrict or reduce access to domain controllers or global catalog servers may affect the correct operation of the Client Access server, we do not support this type of configuration.
Resolution To resolve this issue, move the Client Access servers to the internal network. For more information about the ports that Exchange 2007 uses
for various services, see Data Path Security Reference.”
Thanks,
Kevin Ca - MSFT
Kevin Ca - MSFT

How to Retrieve data from database into another form ?

Good Day!
Am currently new at JSP. I've been studying it for awhile and still getting the hang of it. We are working on a project.
Editing a given data. We have to retrieve the given data and post it to another form "Editing form".
Since we can retrieve data using JSP but how are we going to post it to another form? I mean how are we going to transfer data from one form to another?
Can anyone help me with codes please..

The client is a web browser.
The client submits a request (click a link, visit a form)
The server gets to respond to this
- look at request parameters from the client
- access database
- produce resulting html page
- send page back to client.
The standard pattern is to retrieve data from the database in java code, and then load that data into a bean.
You then make that bean available as an attribute
It is then available for use in your JSP - either <jsp:useBean> tag or using ${ELexpressions}
All you can pass from the client to the server is request parameters - which are always strings.
Draw a picture of where the information is, and the information flows. Very rarely does it go directly from one "form" to another.
Cheers,
evnafets

Failed to retrieve data from the database/invalid argument provided when employing link between two web services datasources

Post Author: vpost
CA Forum: Data Connectivity and SQL
I am trying to join information from two related web services within CR XI. I have successfully set up the web services as data sources have been able to get to the point where I get good data back. However, when I try to pull in certain fields, I get an error that says "Failed to retrieve data from the database/invalid argument provided". Here's the scenario:
The web services are structured as follows:Web Service 1 (Artist) has attributes of Artist Name and Date of Birth.Web Service 2 (CD) has attributes of CD Title and Release Date. Underneath each CD are songs, each of which have a Song Title and Artist Name.
I have defined both web services and defined a link between Artist.Artist Name and CD/Song.Artist Name. I am able to run a report with Song Title and Date of Birth that crosses web services. I am able to run another report with Song Title and CD Title that crosses the different levels in the second web service. However, if I add CD Title to the first report or Date of Birth to the second (both of which effectively force CR to employ the link between the two web services AND the CD/Song hierarchical structure in the second web service, I get the aforementioned error.
Any assistance understanding how multiple web services can be linked in this manner would be greatly appreciated.
Thanks in advance.

Post Author: Mike Wright
CA Forum: Data Connectivity and SQL
Not sure about your exact situation, but having similar problem with another application and have tracked down to security. Added user to group Domain Admin and it works fine. It appears to be accessing a subdirectory which it does not have permission to use and then times out and returns the "invalid....". Seems that once the query just over a certain size (and I'm not sure what triggers this) it needs to make use of temparory file disk, intead of ram.
I'm still trying to track down which temporary it's trying to uses - so if you have any ques.
cheers

Crstal Reports: "Failed to retrieve data from the database"

Running a report in crystal report from SAP 8.81 using the following parameters: CardCode, GroupCode, Date gives the following error: "Failed to retrieve data from the database" "Conversion failed when to converting the nvarchar value to data type int 12/31/2005 [Database vendor code: 245] ".
The store procedure in SQL Server executes smoothly and If you run the report with the date = 12/31/2005 in the parameter also returns expected results.
Thanks.

Hello,
Is this in Business One? If so CR is an OEM build and that forum/product supports that version.
Please post your question to: http://forums.sdn.sap.com/index.jspa#44
It could simply be you need to use a formula to convert the field. Click on the Formula Editor and the hit the F1 key and search on "date". Lots of info on how to convert todate and from date tostring...
Thank you
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Failed to retrieve data from the database using Crystal Reports XI R2

I am using Crystal reports XI R2 and using the Universal Web Connector (connecting to Coghead). When I put some some of the fields from the database and run Preview I get "Failed to retrieve data from the database." . Where is this message coming from and how can I track down what the issue is?

Hi Jamie,
When you are trying to Browse Data of a field it is not poping up any window menas, it is unable to interact with database and get the data from database.
Try to create a new report using ODBC with Xtreem Sample Database. If you get the data in your report without any error then your connector is not working / unable to pull the data into your report.
You can find the supported platforms document in below link
http://support.businessobjects.com/documentation/supported_platforms/xi_release2/default.asp
Thanks,
Sastry

How to retrieve data from the serial port and decode it each 2 bytes is a long variable and 1 frame is about 6 bytes

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