Adding a VI with NXT block to a project and create an executable file

Dear all,
I have a serious problem with the Lego NXT module for LabVIEW. I'm wrote a software for electrochemical measurements that has to inferface with a custom made potentiostat that is integrated with a microfluidic system, whose peristaltic pumps are moved by Lego NXT motors. Since the motors add mechanical and electrical noise to the measurements, I wanted to create a simple VI that could synchronize the motors with the measurements. I managed to do it, but when I create the executable file (the software has to run on computers that do not have LabVIEW installed, so I need to create a stand alone application to distribute it among the partners of this project) the VI that controls the motors do not work anymore and returns me an empty error message.
I hope that the problem is clear.
Now, my question is the following: Can I insert a VI that controls NXT motors in a compiled application that has to run on any PC that hasn't LabVIEW installed?
Thank you very much in advance
Lando

Hi Lando,
I expect you wont be able to use the dual mode NXT API in a labview built executable because that API makes calls into private labview application instances that wont exist in the context of an executable.
However, you should be able to use the older NXT Direct I/O API (these are the VIs with grey icons). This API can not be deployed to the NXT, but it sounds like you aren't interested in that anyway.
The Direct I/O palette can be found at NXT Robotics:NXT I/O: NXT Direct I/O .
Note that with this API you will be responsible for creating and destroying handles(NXT Objects) to the brick.
Good luck and let me know if you have more questions.

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Hi,
I am trying to connect a NXT block using bluetooth. I have paired the device with the bluetooth software and created a serial connection. Thus I can just send data from LabVIEW using VISA but its proving more dificalt than I thought.
All I have to do is send a string or integer to the NXT block.
How can I create a simple sending function using LabVIEW -VISA for just an integer or string ??
Attachments:
Spike.vi ‏72 KB

A couple of comments:
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2. I don't remember what the default of the require response input to the Send Direct Command VI, but you need to specify TRUE if TRUE is not the default.
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JacoNI wrote:
Also I noticed you keep refering to spike.rtx. What is this? My VI running on the NXT block is named "Spike Remote"
Will this have an affect? The VI jpg has got this name in hex but still no response :/
4. "spike.rxe" was the name of the program on the NXT in my example. Programs on the NXT have an extension of rxe. I would recommend the use of the "String to Byte Array" VI rather than building the array by hand. The bytes you specify appear to be decimal rather than hex numbers and probably don't represent the string you expect. You also are missing the extension. Wire "Spike Remote.rxe" into the "String to Byte Array" VI and append a NULL byte.
geoff
Geoffrey Schmit
Fermi National Accelerator Laborary

Expenditure Type LOV-- Adding where clause with controller extension- help

Hi Gurus,
I'm new to OA Framework and Java and I need to extend the controller for the expenditure type lov in iProcurement. I need to add a where clause to the VO to show only those expenditure
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Name of the VO:ExpenditureTypeNoAwardLOVVO
controller:oracle.apps.icx.lov.webui.ExpenditureTypeLovCO
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select * from (SELECT et.expenditure_type, et.sys_link_start_date_active,
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project/task combination.
I enabled the Debug Log from Diagnostics and able to see the values of project_id and task_id in the controller attached to the LOV (oracle.apps.icx.lov.webui.ExpenditureTypeLovCO) as shown
below. Please tell me how I can add the where condition to the custom controller .
I really appreciate your help.
Thanks in Advance,
Shree.
==========================================================================================
[28]:STATEMENT:[icx.lov.webui.ExpenditureTypeLovCO]:#Param# ProjectId=13
[28]:STATEMENT:[icx.lov.webui.ExpenditureTypeLovCO]:lov criteria item from dictionary in getLovItemNumber():
[28]:STATEMENT:[icx.lov.webui.ExpenditureTypeLovCO]:#Param# TaskId=796
[28]:STATEMENT:[icx.lov.webui.ExpenditureTypeLovCO]:VO used in ExpenditureTypeLovCO.java:
[28]:STATEMENT:[icx.lov.webui.ExpenditureTypeLovCO]:#Param# voName=ExpenditureTypeNoAwardLovVO
==========================================================================================
Here is the code for the standard controller:
==========================================================================================
package oracle.apps.icx.lov.webui;
import com.sun.java.util.collections.ArrayList;
import oracle.apps.fnd.common.VersionInfo;
import oracle.apps.fnd.framework.OAApplicationModule;
import oracle.apps.fnd.framework.OAViewObject;
import oracle.apps.fnd.framework.webui.OAPageContext;
import oracle.apps.fnd.framework.webui.beans.OAWebBean;
import oracle.apps.fnd.framework.webui.beans.form.OAFormValueBean;
import oracle.apps.fnd.framework.webui.beans.layout.OAListOfValuesBean;
import oracle.apps.fnd.framework.webui.beans.message.OAMessageStyledTextBean;
import oracle.apps.icx.por.req.webui.CheckoutInfoBaseCO;
import oracle.jbo.domain.Number;
public class ExpenditureTypeLovCO extends CheckoutInfoBaseCO
public static final String RCS_ID = "$Header: ExpenditureTypeLovCO.java 120.1 2006/07/25 06:33:16 sudsubra noship $";
public static final boolean RCS_ID_RECORDED = VersionInfo.recordClassVersion("$Header: ExpenditureTypeLovCO.java 120.1 2006/07/25 06:33:16 sudsubra noship $",
"oracle.apps.icx.lov.webui");
public ExpenditureTypeLovCO()
public void processRequest(OAPageContext oapagecontext, OAWebBean oawebbean)
super.processRequest(oapagecontext, oawebbean);
java.util.Dictionary dictionary = oapagecontext.getLovCriteriaItems();
Number number = getLovItemNumber(oapagecontext, dictionary, "ReqAwardId");
Number number1 = getLovItemNumber(oapagecontext, dictionary, "ProjectId");
Number number2 = getLovItemNumber(oapagecontext, dictionary, "TaskId");
String s = null;
if(number == null)
s = "ExpenditureTypeNoAwardLovVO";
} else
ArrayList arraylist = new ArrayList(1);
arraylist.add("getDefaultAwardId");
Number number3 = (Number)executeServerCommand(oapagecontext, oapagecontext.getApplicationModule(oawebbean), "CheckoutLovSvrCmd", arraylist);
if(isLoggingEnabled(oapagecontext, 1))
logParam(this, oapagecontext, "defaultAwardId", number3, 1);
if(number.equals(number3))
s = "ExpenditureTypeWithDefaultAwardLovVO";
OAViewObject oaviewobject = (OAViewObject)oapagecontext.getApplicationModule(oawebbean).findViewObject("ExpenditureTypeWithDefaultAwardLovVO");
oaviewobject.setWhereClauseParam(0, number1);
oaviewobject.setWhereClauseParam(1, number2);
} else
s = "ExpenditureTypeWithAwardLovVO";
OAViewObject oaviewobject1 = (OAViewObject)oapagecontext.getApplicationModule(oawebbean).findViewObject("ExpenditureTypeWithAwardLovVO");
oaviewobject1.setWhereClauseParam(0, number);
if(isLoggingEnabled(oapagecontext, 1))
logMsg(this, oapagecontext, "VO used in ExpenditureTypeLovCO.java:", 1);
logParam(this, oapagecontext, "voName", s, 1);
OAMessageStyledTextBean oamessagestyledtextbean = (OAMessageStyledTextBean)oawebbean.findIndexedChildRecursive("ExpenditureType");
oamessagestyledtextbean.setViewUsageName(s);
OAMessageStyledTextBean oamessagestyledtextbean1 = (OAMessageStyledTextBean)oawebbean.findIndexedChildRecursive("StartDate");
oamessagestyledtextbean1.setViewUsageName(s);
OAMessageStyledTextBean oamessagestyledtextbean2 = (OAMessageStyledTextBean)oawebbean.findIndexedChildRecursive("EndDate");
oamessagestyledtextbean2.setViewUsageName(s);
OAFormValueBean oaformvaluebean = (OAFormValueBean)oawebbean.findIndexedChildRecursive("ReqAwardId");
oaformvaluebean.setViewUsageName(s);
OAFormValueBean oaformvaluebean1 = (OAFormValueBean)oawebbean.findIndexedChildRecursive("ProjectId");
oaformvaluebean1.setViewUsageName(s);
OAFormValueBean oaformvaluebean2 = (OAFormValueBean)oawebbean.findIndexedChildRecursive("TaskId");
oaformvaluebean2.setViewUsageName(s);
((OAListOfValuesBean)oawebbean).setViewUsageName(s);
public void processFormRequest(OAPageContext oapagecontext, OAWebBean oawebbean)
super.processFormRequest(oapagecontext, oawebbean);
==========================================================================================

Hi, I will try to look into the issue. I have also done customizations like this in past.
To achieve this, we must read the Process request of CO properly and understand the places, where you have to make changes. In my case, I identify such places and also I couldn't extend the controller class. SO I took the code from standard CO, changed it at couple of places and created a class file with same code as standard CO but with changed at some places. After that I gave newly created CO name in personalization property, so that the page will follow newly created custom CO.
So I would suggest to read the CO properly, to understand which line is doing what......

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Hi Khalid,
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Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

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Hi Eagles Coach,
The existing NXT blocks contain several different VIs with proprietary software. Like any other software company, it is in National Instruments' best interest to protect the original source code the NXT software was built upon.
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| Michael K | Project Manager | LabVIEW R&D | National Instruments |

In Primavera Risk Analysis, the MIN. ML, MAX columns is for imput the minimum impact, most likely impact , maximum impact duration of a risk or the remaining duration for MIN, ML and adding remaining duration with maximum impact for MAX?

In Primavera Risk Analysis, the MIN. ML, MAX columns is for imput the minimum impact, most likely impact , maximum impact duration of a risk or the remaining duration for MIN, ML and adding remaining duration with maximum impact for MAX?

You are welcome. I'm glad you got it back up.
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(2) I don't know what you mean by "Been feeding the [email protected] for several weeks now, 700 emails each day at least." After the initial training period, SpamAssassin doesn't learn from mail it has already processed correctly. At this point, you only need to teach SpamAssassin when it is wrong. [email protected] should only be getting spam that is being passed as clean. Likewise, [email protected] should only be getting legitimate mail that is being flagged as junk. You are redirecting mail to both [email protected] and [email protected] ... right? SpamAssassin needs both.
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Visit http://www.rulesemporium.com/rules.htm and download the following rules:
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I am obviously missing some important points about Labview development for NXT. I have a lot of experience developing embedded applications with C, but this is the first time i have tried to do anything with Labview especially with the Lego NXT as the Target device.
I want to create NXT blocks for some homebrew sensors that i have created. I need full access to the I2C and RS485 support in the NXT.
Can anyone suggest ways one should go about createing, debugging, this type of sensor interface block for the NXT.
Thanks
KC

Yes: there are so many questions in your post that it is difficult to build an answer...
I surely can not help you with the problem of multiple bytes.
This is an answer to your question about rs485 in NXT-G:
http://forums.nxtasy.org/index.php?s=&showtopic=1676&view=findpost&p=13530
I don't know if you have already studied the i2c-related pages in:
http://www.tau.ac.il/~stoledo/lego/
this too is an example which can be study both for i2c interfacing and NXT-G block preparation:
http://www.extremenxt.com/tda8444.html
finally the block from mindsensors' PCF8574-NX kit could be useful (I mean: look at the vi's):
http://www.mindsensors.com/index.php?module=documents&JAS_DocumentManager_op=viewDocument&JAS_Document_id=37
and maybe among the blocks they've prepared for their sensors:
http://www.mindsensors.com/index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=45&MMN_position=12:12
you could learn something.
I agree with you that the tutorial about building NXT-G blocks with Labview is too short;
some lessons can be learnt from the NXT-G blocks done by others (spying the vi's they wrote): you find many of them in nxtasy.org repository.
Some advanced techniques are reported in
http://nxtasy.org/2007/04/12/advanced-nxt-g-block-techniques-part-iv/
and other pages of nxtasy.org.

Adding a VI with NXT block to a project and create an executable file

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