Labview PDA using RS232

Many new PDAs have USB cradles only. Can someone recommend a good configuration (PDA, OS and any options) that worked for Labview PDA to control instrument through RS232?

I don't have a lot of experience with various PDA models but I'm using a Palm OS Tungsten T5 to do serial communication. I did have to buy a cable that converts the TTL level RS232 to as "true" RS232 level. Once I got that it worked rather well. As far as I know most Palm PDAs have RS232 coming out of there sync connector. You just have to do some digging or call the manufacturer to get the right info.
Don't drive angry. Don't drive angry!

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Function of the further Programms when I use LabVIEW PDA

Hi,
I write my Bachelor Thesis over a PDA Application where I´ve create with LabVIEW PDA.
Before I could use the LabVIEW PDA I must install few programms.
1)VisualStudio 2005 Standard
2)Visual Studio 2005 Command Shell
3)Windows Mobile 5.0 SDK for Pocket PC
4)eMbedded Visual C++ 4.0
5)eMbedded Visual C++ 4.0 SP 4
Anybody knows what functions this Programms have? I don't need it for the whole time.
Thanks for your answer
capunze
Message Edited by capunze on 05-16-2006 10:40 AM

The way I understand it (I don't have any official knowledge, and I wouldn't mind hearing an explanation either), LV PDA converts its code into C code and then uses eVC to compile the code for the PDA. I assume you're using LV 8.0 because Visual Studio wasn't required in previous versions. Maybe it's also needed now in order to compile the code.
Try to take over the world!

LabVIEW PDA reports COREDLL.DLL error when using Call Library Function Node

I'm trying to build a LV PDA app that calls an external DLL file built using embedded visual C. When configuring the Call Library Function node I select the stub DLL, configure the I/O parameters and select OK. When the configuration dialog closes I get the following error:
LabVIEW: LabVIEW.exe - Unable to Locate Component
This application has failed to start because COREDLL.DLL was not found. Re-installing the application may fix this problem.
I do not get this error when using the configuration dialog in the example VIs.
Any suggestions as to the cause and/or the solution?
Thanks,
Ryan

Hello -
When you create a PDA VI that calls a DLL, you must include the .c or .lib file that corresponds to the DLL. Take a look at these documents:
LabVIEW PDA Module Build Errors with VIs that Call DLLs
Why Do I Receive Errors When Calling a C++ DLL from a Call Library Node Using the LabVIEW PDA Module...
How To Call External Code in LabVIEW PDA for Palm OS
H
ow To Call External Code in LabVIEW PDA for Pocket PC
Hope this helps!
S Vences
Applications Engineer
National Instruments

Labview control of LS331 using RS232 port

Hi All,
I want to control a Lakeshore 331 temperature control using Labview. I am using RS232 port. I found driver on NI website but I guess they are for GPIB. I was wondering how can I use them for RS232 port?
Or if I want to bulid my own VI, how do go about it? I would appreciate if someone provide me example for capturing device using RS232 port.

The driver is written for both GPIB and Serial. You should replace the "Old" Visa Open function in LSCI 331 Initialize per the instructions here and try it. Once that's done, just select the com port by clicking on the VISA Resource Name.

Tab Control Property Node gives a build error when used in a VI for LabVIEW PDA

Hello,
    Iam new to LabVIEW development & need help regarding this:
    We are trying to port a LabVIEW application from desktop to a Windows Mobile PDA. Please note that the LabVIEW application works fine on the desktop. In one of the VIs, a Tab control property node is used which gives a build error with LabVIEW PDA project. A sample VI which shows the problem & the error list snapshot is attached with this post. Can anyone please suggest an alternate approach to achieve the same functionality with LabVIEW PDA? Waiting for an early response from anyone...
Thanks & Regards,
Subhashini
Attachments:
VI_Error.zip ‏31 KB

Hello Ton,
    Am glad that i got a response, thanks. The following links indicate that Tab control is supported on PDA target:
http://digital.ni.com/public.nsf/allkb/CBA335641E27B858862571490015EA88?OpenDocument
http://forums.ni.com/ni/board/message?board.id=170&message.id=221507&requireLogin=False
    I feel that the Tab control property node that has been used in the VI (which is attached earlier) may not be supported on the PDA target. Can u (or any LabVIEW expert) suggest an alternate approach to achieve the same goal with LabVIEW PDA (changing colour of Tab control pages programatically)??
    I had missed out some details earlier: We are using LabVIEW 8.5 PDA module on a Windows Mobile PDA.
Thanks & Regards,
Subhashini

How to open an app using LabVIEW PDA Module 7.1

Hi,
i´m developing an app using LabVIEW PDA Module 7.1 that needs to open a
standard application (in particular, the default camera application) on
my PDA (Qtek 2020 with Pocket PC 2003). Can anyone tell me how to do it?
Thanks,
Pedro Sampaio
Computer and Telecommunications Engineer Student
ESTG -IPL, Portugal

Olá,
Com o project podes fazer builr e deploy, a partiur daí tens a aplicação instalada na PDA.
Cumprimentos

How to build a dll for labview pda, which uses the intel ipp primitives in it

Hi all,
For my application, I need to call a c dll from Labview PDA, and in the c function i need to use intel IPP function. When i call my dll, i get an error saying the ippfunction i use, say "ippsCopy_16s missing c or vi file". Can someone tell me what I might be doing wrong?

Hi Vani,
When using a DLL in a PDA there are some special considerations you have to take. Please take a look at the following knowledgebase describing the process.
Eli S.
National Instruments
Applications Engineer

Labview pda module: how can I resize image dynamically in an application?

Hello every one,
I am currently working on the development of an application on a PDA (brand Nomad) and whose OS is Windows Mobile. So I am using the PDA module of Labview 8.6.My problem is the following one: in my application I would like to be able to load images (thanks to their path) in pictures indicators. I load images with the labview “function PDA Image File Load.vi” and then my problem is that images don’t fit with the size of the indicator, and so I am only able to see the left top corner of the image…Of course, I would like to see the entire picture, but I don’t know how I can modify or resize a picture with the PDA Module, where most of the property nodes (zoom factor, scrollbars…for picures) are not available.Has someone ever faced and fixed that problem?? Any help would be really appreciated!! PS: Attached is one part of my application!
Attachments:
cameracapture.vi ‏21 KB

Hi,
Indeed, like Romain D. said you have some interesting discussions where you can find some customer's experience like yours :
How Do I Put A Picture or Image On My LabVIEW PDA for Palm Front Panel?
How to Resize a picture
Scale image on PDA (Pocket PC)
Placing an image or picture on Labview PDA pocket PC
Picture and PDA
PDA Picture Control Scrollbars
Let me know what happens.
Regards,
Steve M.
National Instruments France
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Accessing mySQL database from Labview PDA

Hi,
Has anyone tried writing data to a mySQL database or any other database for that matter using the Labview PDA module? I know it's easy to do from Labview and you have to download the ODBC drivers to get it working but I don't think these drivers are available for Windows Mobile (I've seen XP and Linux drivers only). Any help would be appreciated.
Thanks

Hello,
I don't have experience with this, but you might look into the following:
1. remote connections: http://www.geekzone.co.nz/content.asp?contentid=2656
2. this thread seems to indicate .NET doesn't support it yet (but it's over a year old...): http://forums.mysql.com/read.php?38,73109,73109
3. Another option - you can use VI Server to have your PDA VI call a VI on your host machine if they are networked... there is an example of this that ships with LabVIEW PDA I think - check it out! Thus, if the db is on your host machine, you could write your host VI, and have your PDA VI call it etc.
I hope this helps!
Best Regards,
JLS
Best,
JLS
Sixclear

LabView PDA module gives error "unable to lock memory chunk"

I've written a LabVIEW PDA Application that reads an ASCII decimal string through a PDA serial port. I can display the string ok, but when I try to convert the string to a number using the decimal string to number VI I get the error message "App failed. Error Code 172649003. Unable to lock memory chunk."
Any ideas?
Cheers, Paul
Naval Surface Warfare Center - Carderock Division
West Bethesda, MD

Does this happen whenever you use the string to number VI (can you reproduce this in an empty VI)?
Are you sure it happened because of that VI and not because of something else that is happening in the VI at the same time?
Can you cut down pieces of the code and still get the error? Can you post a small example?
Which PDA\LV are you using?
Can you write some more details about your app (does it do anything else other than serial comm)?
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Winsockread Error in LabVIEW PDA

Hi all. I am currently trying out the VI server example given in the LabVIEW PDA toolkit but i keep getting this error "WinsockRead error Error Code: 10054.
The LabVIEW example project I am using is "VI Server- Pocket PC.lvproj" and I have loaded the "CallByRef Wave - Pocket PC.vi" into the PDA. I have a WIFI connection to a PC and have manually assigned IP address to both the PDA (192.168.100.101) and PC (192.168.100.100). I have verified my WIFI connection is working by using the "ping 192.168.100.101" command on my PC.
Also, I am configured my VI server correctly by selecting the enabling the TCP/IP protocol and ActiveX under the VI Server Configuration. The port number I used is 3363. I have also added the PDA IP address (192.168.100.101) to the Machine Access List.
When I try to run the example program on the PDA with the IP address "192.168.100.100" and a port number of 3363, I will get the error. Can anyone give advice on what I have missed out or done wrongly?
I forgot to mention that the remote program "TargetWave.vi" on the PC is loaded in memory and opened in LabVIEW also.
Thanks in advance.

D.Com,
I just thought of something else to try. You said you are using port 3363. The program was initially set up to use Port 3865. Did you change the VI server properties (From the project, right click on the my computer icon>>properties>>VI server: Configuration) to port 3363 or just the control on the front panel of the CallByRef Wave.vi? Both must be set to the same port.
Secondly, you may have to open a port in your firewall if you are using WindowsXP SP2. Initially I would completely disable the firewall and see if that solves the problem. If it does, then enable the firewall and create an exception of the port you've specified (3363).
As for using the trial version, this should have no impact on the performance of the toolkit.
Best Regards,
Chris C
Applications Engineering
National Instruments
Chris Cilino
National Instruments
LabVIEW Product Marketing Manager
Certified LabVIEW Architect

Queries about LabVIEW PDA

I have a problem with displaying measurment file on the waveform graph in the PDA. I understand that PDA have some function constraints and does not support "Read from measurment file"function. Is there any way to convert the measurment file to a file which the PDA waveform graph able tom display the result or should i replace the "write to measurment file" function to other function e.g write to spreadsheet? How do I include the header,time and date in a spreadsheet heading?

It would probably be best to originally write your data in a tab-delimited format (including labels, time stamps, etc). Then, you can program the Read from Text File function in LabVIEW PDA to mimic the behavior of the Read from Spreadsheet File VI in LabVIEW.
Once you place the Open/Create/Replace File and Read from Text File VIs on your block diagram, you can write click on the Read from Text File VI and select the Read Lines option. Next, scan through each line for tab characters using the Scan String for Tokens VI, and finally build up a 2D array of all elements in your text file. This may sound a bit confusing, so I have attached a small example VI to this post below (PDAReadFromTextFile.vi). Don't forget to use the Close File VI when you are done reading from disk.
Keep in mind that PDAs do not support array indicators, so you must view any front panel data as individual strings (or one large concatenated string). The Index Array function on the Array palette should come in handy here.
I hope this helps!
Casey Weltzin
Applications Engineer
National Instruments
Message Edited by Caseyw on 05-29-2007 09:08 PM
Attachments:
PDAReadFromTextFile.vi ‏21 KB
test.txt ‏1 KB

Is it possible to run AM Modulation in LabVIEW PDA Module?

Hi All,
        I would like to ask about AM Modulation vis can run on PDA Module or not?Because as i mention that PDA screen is too small to see all the AM modulation waveforms.So i would like to know whether is it pissible to run AM Modulation on the LabVIEW PDA Module? If it is possible, please tell me that how should i modified my VIs on block diagram and how do i arrange all waveforms graph on front panel?
        Then, the AM modulation that i want to run is as shown in attach file.
         Thanks to all for your help.
With Regards
Nyan Lin
Attachments:
AM block Diagrams.jpg ‏56 KB
AM Modulation front panel.jpg ‏107 KB

Hi Jpaul,
             Thanks for your quite useful help. I am now able to manage all waveform in one tab control. But i still have some errors for my final year project. I am from Singapore Nanyang Polytechnic who do the final year project. My project is to transfer over the AM Modulation waveforms on the PDA device. But i still face on with some errors.My error is as following.
(1) After i run my waveforms together with Tab control, the program that appear on the PDA is only too small and only can see half of
      my waveform.As i understand that all the text size must be greater than 20. And I chose the landscape screen for my tab control using.
      The waveform that together with tab control is as shown in attach file.
(2) Then my PDA's internal memory is not enough space for running the new application and when i want to delete it, it is not possible to
      delete and there is error to delete. I would like to know how can i delete my NI files from my memory. My PDA model is HP iPAQ hx2700.
(3) Then I would like to know more about what is the usage of NI CF-6004? Is it like memory card for running NI
      waveforms on the PDA? Or if not what is it use for ?
             I am strongly appreciate for ur help and i know that this might be so many question. But i am really no way to find this errors anymore.Thats why i have to ask to you. I will be thanks for all ur help. Thanks a lot
Best Regards
Nyan Lin
Attachments:
AM Modulation on PDA.JPG ‏30 KB

LABVIEW PDA/DAQmx Base error

I'm building a VI for a PDA (pocketPC 2003)
In a Functions Panel, when I'm going in a menu "Measurement I/O" => "DAQmx Base", it misses many icons. I have installed and uninstalled three time DaqmxBase 2.2 with the same result (icon.jpg). I have installed Daqmx Base 3.0 and the problem is always there. Moreover, when I'm going in menu "Select VI" in a Functions Panels, I can open anothers Daqmx Base VI, but there is many errors (error.jpg).
Labview 8.2.1
Labview PDA 8.2.1
DAQ6062E
Attachments:
error4.JPG ‏108 KB
icon.JPG ‏130 KB

Hi,
LabVIEW PDA support for DAQ is limited. The number of DAQ VI's available on LabVIEW PDA is also limited.
I could not clearly view your error list but I did run across a possibly useful Knowledge Base article. I am also including the Known Issues with LabVIEW PDA 8.2.1 . I hope this helps!
Regards,
Ima
Applications Engineer
National Instruments
LabVIEW Introduction Course - Six Hours
Getting Started with NI-DAQmx

Labview PDA support USB?

Does the LabVIEW 8.0 PDA support USB communication?

optomesures,
I have seen a regional option have this effect before. I would check to see if you are using a period or a comma for the decimal point. You might want to try following the steps in this KB to see if that helps. If not then I might suggest checking out the Calling External Code in LabVIEW PDA KB as well. One last thing to try would be to see if the code works on the Windows machine. The DLL would have some problems, but make sure it is has at least a basic functionality.
Hope this helps!
Andy F.
National Instruments

Labview PDA using RS232

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