How to read and display a signal from my PIC Microcontroller onto Labview

Hi,
I am doing a project on a Pulse Oximeter and i am trying to read and display the signal from my PIC Microcontroller on Labview? How do i go about doing it? I am using the PIC16F877 and also making use of the USART?
How do i implement and initialise the USART in PIC16? What are the steps to be taken, please guide me through the process? The link provides information regarding the USART connection, initialisting and stuff? Is it correct to use these codes in my program?Link: http://ww1.microchip.com/downloads/en/AppNotes/00774a.pdf
Also, i am using the RS232 serial interface to connect to the PC? The connector i am using is the DB9 Connector. Which template and VI can i use? Am i supposed to use the NI-DAQmx and VISA? Also, for my USART connection, i am using the MAX232 Driver which is applicable for my application as i am working with +5V. So far, i have been reading and trying out on Labview and the steps i have taken are:
1) Open a New VI and used the Instrument I/O(Read & Display) template?
2) How do i configure the Instrument I/O Assistant Express VI to read the info from my device connected to COM1?
3) I was reading the Labview Manual, 'Getting Started with Labview' and i was following the steps under Page 55, Communicating with an Instrument. Am i on the right track?
4) How do i check and make sure that the port settings of the I/O Assistant and my PIC Micro Match
Please help me out and guide me through the process. I am student at a polytechnic and i am very new to Labview and the software is used as a development tool for the project. I have a deadline to meet and i hope i can get a response as fast as possible. Your help will be kindly and greatly appreciated. I hope to hear from you guys soon.You can e-mail me all your answers at [email protected]
Thank You
Best regards,
Ashwin
Ashwin Kumar Mansukhani
Attachments:
Getting Started with Labview.pdf ‏901 KB

Hi Ashwin,
I am not familiar with the PIC Microcontrollers, but I am assuming you mean that you have the microcontroller sending out serial data that you want to read on another computer with LabVIEW. Please let me know if this is incorrect.
What type of data is coming out of the serial port? Is it ASCII, or binary? The reason I ask this is that the serial communication in LabVIEW is done through a protocol called VISA, which uses ASCII data to send and receive. You can later convert this data into whatever form you need, but this is what it is designed to read and write.
You can check the settings such as baud rate and data bits in a configuration utility called Measurement and Automation Explorer, or MAX. When you open up the MAX interface, you can expand the Devices and Interfaces entry on the left, and then expand the Ports entry to see your serial port. When you highlight this port, select the Port Settings tab at the bottom of the window, and you can see what the current settings are, and change them if you need to. You can also set these parameters in LabVIEW using the VISA Configure Serial Port VI.
You can also test communication in MAX by right clicking on the correct port and choosing Open VISA Session. Then choose the Basic I/O light blue tab, and then go to the Read tab. When you click execute, it should read in what is coming from the serial port. This will allow you to verify that the correct information is coming in before even trying to acquire the data in the LabVIEW environment.
In LabVIEW, the best resource to use the Basic Serial Write and Read example program that ships with LabVIEW. By examining the block diagram of this program, you will be able to see the basic programming flow of serial communication in LabVIEW.
I hope this information was helpful! Please let us know if there's anything else we can help with.
john
Applications Engineer

Similar Messages

How to read and display a signal from my PIC Microcontroller onto Labview?

Hi,
I am doing a project on a Pulse Oximeter and i am trying to read and display the signal from my PIC Microcontroller on Labview? How do i go about doing it? I am using the PIC16F877 and also making use of the USART?
How do i implement and initialise the USART in PIC16? What are the steps to be taken, please guide me through the process? The link provides information regarding the USART connection, initialisting and stuff? Is it correct to use these codes in my program?Link: http://ww1.microchip.com/downloads/en/AppNotes/00774a.pdf
Also, i am using the RS232 serial interface to connect to the PC? The connector i am using is the DB9 Connector. Which template and VI can i use? Am i supposed to use the NI-DAQmx and VISA? Also, for my USART connection, i am using the MAX232 Driver which is applicable for my application as i am working with +5V. So far, i have been reading and trying out on Labview and the steps i have taken are:
1) Open a New VI and used the Instrument I/O(Read & Display) template?
2) How do i configure the Instrument I/O Assistant Express VI to read the info from my device connected to COM1?
3) I was reading the Labview Manual, 'Getting Started with Labview' and i was following the steps under Page 55, Communicating with an Instrument. Am i on the right track?
4) How do i check and make sure that the port settings of the I/O Assistant and my PIC Micro Match
Please help me out and guide me through the process. I am student at a polytechnic and i am very new to Labview and the software is used as a development tool for the project. I have a deadline to meet and i hope i can get a response as fast as possible. Your help will be kindly and greatly appreciated. I hope to hear from you guys soon.You can e-mail me all your answers at [email protected]
Thank You
Best regards,
Ashwin
Ashwin Kumar Mansukhani
Attachments:
Getting Started with Labview.pdf ‏901 KB

Hi Ashwin,
It is a good idea to first be able to communicate with the microcontroller using some sort of serial communication software such as "HyperTerminal" or "Procomm", etc. Refer to MicroChip's recommendations on this.
Once that works, then you are ready to use LabView.
Here is a link which covers many aspects of serial communication. Link - click here
You probably received a development kit. They usually have a readily available interface. It's been a long time since I played with the PIC, but I seem to remember that you need to program the serial communication driver (as well as at least a bootloader) to get the serial communication going. The driver contains the necessary protocols so that you PC can have a machine conversation with the target (PIC).
It sounds like a fun & interesting project. Please avoid to have replies to your personal email. By having the answers posted to this thread, you will get much more support and advice.
Have fun,
JLV

How to read and display a signal from my a miccrontroller (MCB1700) onto labview connected via a CAN port on a PXI machine

How do you read and display a signal from my a miccrontroller (MCB1700) onto labview connected via a CAN port on a PXI machine?
I tried using a DAQ Assistant but the CAN port is not included as one of the supported physical channels even though all its drivers are upto date.
Please help..
Thanks.
Solved!
Go to Solution.

Attached herewith is a print screen of what is showing on MAX
The CAN ports are on NI PXI-8461
Hopefully that clarrifies something.
Attachments:
Untitled.png ‏212 KB
Untitled.png ‏212 KB

How to read and write a data from extrenal file

Hi..
How to read and write a data from extrenal file using Pl/sql?
Is it possible from Dyanamic Sql or any other way?
Reagards
Raju

utl_file
Re: How to Create text(dat) file.
Message was edited by:
jeneesh

Problems while reading and displaying .pdf-Documents from Bfile

Hi
I want to read and display .pdf-Documents in Adobe-Reader that are stored as BFile. While displaying the Document Adobe Reader is showing several Errors like " ..less Picture-Data read than expected.. ". Is this a Buffer-Problem? or whatelse ??
Thanks for help
null

PrintStream wr = new PrintStream(socket.getOutputStream());
wr.close();I suspect this is the problem. You could try socket.shutdownOutput() - or you could just leave the streams alone and let socket.close() shut things down.
Grant

Java XML-Reader (SAX)--How to read and display xml-element-data???

hello all,
i would like to display just some xml-data
Which methods in java should i use to select just one character-data of this (for example: "deu" from the element <Language> or the attribut "version" of the element <catalog>).
Here is the XML-document i want to parse and display it with System.out.print() :
<BMECAT version="1.2">
     <HEADER>
          <GENERATOR_INFO>
               e-proCat 2.1, e-pro solutions GmbH
          </GENERATOR_INFO>
          <CATALOG>
               <LANGUAGE>deu</LANGUAGE>
               <CATALOG_ID>Katalog 01</CATALOG_ID>
               <CATALOG_VERSION>001.000</CATALOG_VERSION>
               <CATALOG_NAME>ETIM</CATALOG_NAME>
               <DATETIME type="generation_date">
                    <DATE>2002-05-22</DATE>
               </DATETIME>
               <TERRITORY>DE</TERRITORY>
               <CURRENCY>EUR</CURRENCY>
               <MIME_ROOT>ETIM-Daten</MIME_ROOT>
          </CATALOG>
</HEADER>
</BMECAT>
Here is the java application i wrote and which doesn t work:
import org.apache.xerces.parsers.SAXParser;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
     public class XmlLeser implements ContentHandler {
public XmlLeser(String fileName) {
try {
XMLReader myParser = new SAXParser(); // SAXParser (Xerces)
myParser.setContentHandler(this);
myParser.parse(fileName);      } catch (Exception e) {
     System.out.println("Erreur " + e);     }
}// End of constructor
public void startDocument() {
     System.out.println(" start to parse " );
} // startDocument()
public void endDocument() {
System.out.println(" End of Parse ");
} // endDocument()
public void startElement(String namespaceURI, String localName, String qName, Attributes atts) throws SAXException {
     System.out.println(localName) ;
public void endElement(String namespaceURI, String localName, String qName) throws SAXException {
}// Endelement()
public void characters(char ch[], int start, int length) {
} // endCharacters(char[],int,int);
public void processingInstruction(String target, String data) {
} // processingInstruction(String,String)
public void ignorableWhitespace(char ch[], int start, int length) {
          characters(ch, start, length);
} // ignorableWhitespace(char[],int,int);
public static void main(String args[]) {
String xmlFileName = "";
if (args.length == 0) {
System.out.println("Usage::java XmlLeser path/xmlFilename");
System.exit(0);      } else {
xmlFileName = args[0];
XmlLeser pux = new XmlLeser(xmlFileName);
}// end main()
}//endClass

You need to pass your filename String as a parameter to your functionality. It depends how you're currently set up though. We can't really see the top of your call so it's difficult to determine what you are calling and we don't really know from where you're calling either.
If you're running standalone, then on launch of the application, you can feed in a file name as an argument that you can read in in String args[] in the main function and pass down to your XML splitter.
If you're a method in a class that's part of a bigger pile, you can feed the file name as a String to the method from wherever you call from if it makes sense architecturally.
You might also want to pass down a File object if that makes sense in your current code (i.e. if you're using your file for other purposes prior to the split, to avoid recreating closing/opening for no reason).
Depends what you're trying to do. If I put together a piece like this, I would probably create an <yourcurrentrootpackage>.xml.splitter package.
Also, on a side note, you're problem isn't really reading and writing XML in java, but seems more to be making your functionality generic so that any XML file can be split with your code.
Regards
JFM

How to import and display an applet from JSP

i m using netbeans 5.0
i have class named myapplet.class
and jsp named myjsp.jsp
now i want to access(import) this myapplet.class from jsp
also i want to display this applet from this jsp
i am able to do either thing but not both
so please help me it is so urgent and important for me bcoz
i have to complete my project as early as possible
Thanks in advance

my jsp source file page path is D:\Reliance
project\WebApplication3\web\
and classes path is D:\Reliance
project\WebApplication3\build\web\WEB-INF\classes\
so problem is that if i want to use myapplet.class
then i have to put my class in D:\Reliance
project\WebApplication3\build\web\WEB-INF\classes\
location
but at that time i am not able to display this applet
on my jsp
if i put my myapplet.class in
D:\Reliance project\WebApplication3\web\ then i m
able to display
applet but not able to access(import) this class
hope you will got the problem!!!
thanks for your reply !!!try to set the path of your applet on jsp something like this
"WEB-INF/classes/myclass.class"

How to retreive and display output list from BAPI

Hello
I am making an applcation using SUP 2.0, and this application make an user to get leave history using a Mobile System from SUP.
I've created the MBO as Attributes using the BAPI: BAPI_LEAVE_HISTORY.
This BAPI has some parameters IN and OUT.
Input parameters are Employee Id and date.
The parameter OUT is a List that retreives the employee leave history.
Anyone has an Idea or example how to retreive the output from BAPI and displaying the output on a screen.
Any tips or blogs that can help me?
Thanks all!
Satish

Hi David Brandow,
I have tried your solution where I just created a MBO for my 'operation' and I'm using sync parameters to execute the RFC.
The problem I'm facing is, for example, if I create a record it gets saved in the MBO table and the record successfully gets created in SAP as well after a sync. But when I create another record and sync, the previously saved record in MBO table also gets executed so I'm getting duplicate entries in SAP.
Have you or anyone faced this problem?
Any response is appreciated. Please let me know if I'm not clear, I realized its a complicated scenario.
Thanks,
Sandeep

How to Read and Generate XML file from java code.

hi guys,
how to read the xml file (Condition :we know only DTD or Shema only).
How to Generate the new xml file ?(using Shema )
And one more how directly Generate the xml from DB?
Pleas with code or any URL

Using XMLbeans you can generate Java objects from an XSD schema (perhaps DTDs aswell)
Then you can create an instance of the Document object and ask it to write itself.
This will create an XML document complient to the schema.
XMLBeans generates a "type" safe DOM where you can only ever have a structure compilent to you schema.
matfud

How to read and display a fits image into JPanel

Hi,I currently want to read a .fits file and display it in JPanel,have no idea how to achieve it.Any suggestions and source codes are appreciated.Thanks in advance!

fits stands for flexible image transport system,it defined only for astronomy image data.it is not normal image,I am afraid I can not use the way you said to read fits file.Anyway,thanks a lot.

How to retreive and display return value from BAPI

Hello,
I am using SUP to create a sales order application. In my MBO I have a create operation which calls a BAPI to create a sales order. How can I retrieve the return value (saled doc number) and display it on a screen and display it as an Alert of BB application.
Regards
Nidhideep Bhandari

Hi David Brandow,
I have tried your solution where I just created a MBO for my 'operation' and I'm using sync parameters to execute the RFC.
The problem I'm facing is, for example, if I create a record it gets saved in the MBO table and the record successfully gets created in SAP as well after a sync. But when I create another record and sync, the previously saved record in MBO table also gets executed so I'm getting duplicate entries in SAP.
Have you or anyone faced this problem?
Any response is appreciated. Please let me know if I'm not clear, I realized its a complicated scenario.
Thanks,
Sandeep

How can read and process data uploded from a datalogger on a network with labview

hello evryone.
i have a agilent datalogger 34972a data acquire temperature reading and makes them availlable on a network. i would like to acess this data on a pc running labview, analyse and prsent them. my problem is that i am not quite sure how to tell labview acquire this specific data.
any help would really help me getting started.
thanks already.
Yann

Are you
Running the Agilent stand alone (or using Benchlink) and writing data to a file on the network ?
Do you want to use LabView to control the networked data logger and aquire data?
If you are doing #1 then you can not use LabView because the Agilent (and Benchlink) strores data in a proparitary format.
You have to use Benchlink to export the data to a CSV file before any other program besides Benchlink can read it.
If you want to do #2 then you simply access the Agilent through VISA just like if it were connected using USB, Serial, or GPIB.

How to read and display table data entries from ERP in CRM

Hello experts,
I am new to CRM. I need to read data base entries from ERP in CRM system. What would be the best way to do . The table is a standard SAP table with a custom include (several customer fields). Calling a web service would be the best way..? or is there any other way that I can do it too.
Also, to display these entries what would be the best tool? Should I built my own transaction/report to do it?
Any advise or guidance would be a great kick start to learn the CRM development environment.
Regards,
jaffery

Hi,
Check the below wiki link if it helps.
http://wiki.sdn.sap.com/wiki/display/CRM/Howtodisplayaz-tableinanassignmentblock
Also, you can try an option of transaction launcher.
Hope this helps.
Regards,
Chandrakant

How to read and print a Pdf from Server

Hallo, i need a help. I have some pdf documents on server and i want to allow viewing and printing them from the client. I would like not to have it outside my application cause i don't want client computers have to download adobe reader.. I think that purePDF can help me but i really don't know how to load the stream and put it on display.. Can anyone help me or give me some advices?
Thx for all
Max

The simplest way that I know of would be to use 'navigateToURL()' and let the user to print the pdf from the browser.
Does anyone have the advice on doing this within the Flex app; i.e. without opening a new browser window?
FTQuest.

How to pull and display the document from an external storage medium?

HI,
We are having one external storage medium for SAP documents. In our case it is filenet server.
My concern is .
How can we pull the doc from the filenet server (external storage medium)?. I am in need, how and what an abap development team needs to be done?.
Can anyone help in this regard ....to get the best logic and best technique ....!!!
Note:
I need to post this in ordinary abap not in webdynpro abap. I will do that. If any one get a chance to look into this and if you know .....please let me know the way.
Thanks in advance
Pons.
Edited by: Ponnuchamy on May 31, 2009 1:30 AM

in first page for user input :
<form action="second.jsp" method="post">
Are you happy?
<br><input type="radio" name="radio1" value="yes" CHECKED>YES
<br>
<input type="radio" name="radio1" value="no">NO
<input type="submit">
in second.jsp output :
Your answer is:
<%= request.getParameter('radio1') %>
Is it what you want to display?
Hope that helps.

How to read and display a signal from my PIC Microcontroller onto Labview

Similar Messages

Maybe you are looking for