Help me about communicating PIC microcontroller with Labview

Hi everybody!!!!!!!!
I have a few issues about data acquisition in Labview,so i need your instruction.
     Right now,I want to practise a project about the serial communication with PIC16F877A microcontroller ( a microcontroller of Microchip,40-pins,already integrated 10 bit A/D module,with 8 channels) ,developing the user interface in the Labview 8.0 software.
     My goal is data acquisition from multiple sensors:such as LM35 temperature sensor and a pressure sensor,analyzing and display the data-time graph in Labview
     I intend to use ANx-pins (analog input pins,having 8 pins) in PIC16F877A,connecting to data-pin from sensors,then I use the TTL outputs of the PIC in combination with a MAX232 serial driver chip.As you know,the mAX232 simple converts the TTL outputs to RS232 outputs and forword them on.
     It is of no use to be able to collect various sensor readings into the PIC if there is no-way to transfer that data to a location where a user can use it.To solve this problem,I choose to implement a standard RS232 serial link between the PIC MCU and my personal computer (using DB9 COM terminal)
     This meant that I would need to initialize the A/D converters each time I want to read from a different A/D sensor because the two sensor dit not share a common configuration.
     My troubles is how to transfer data from sensors through PIC MCU to Labview,using RS232 standard,how to program for Labview,which I have to use:files of Serial communication in Serial.VI,or DAQ funtions in DAQ pallete?
   P/Sorry,my English is not good,expecting your sympathy!
   If it is impossible,you could send me an instruction or the same examples in detail,my mail:[email protected]
THANK YOU VERY MUCH!!!!!!!!

It would be best if you were to re-post this to the LabVIEW forum.
Regards
Ray Farmer
Regards
Ray Farmer

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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
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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

PIC Microcontroller to Labview

Hello,
I am Samarth and i am working on a Pulse Oximeter for my project. I am supposed to display all the samples, MAX & MIN values on Labview as a graph. I had no knowledge of whatsoever on serial communications at the beginning but i managed to do the following, one step at a time.I did the following:
1) Communicate between two computers; sending of ASCII characters from hyperterminal to hyperterminal.
2) Got the PIC Microcontroller to talk to the PC; implmented the code in my program and the PIC16F877 was able to send ASCII characters to hyperterminal
3) Got Labview and Hyperterminal to commnunicate; was able to send and receive ASCII characters on hypterterminal and labview.
Now, here is the big question? how do i go about sending the samples to Labview and so that i can view the samples as a graph in Labview? Please help me out with this.
I did the following, set up all the hardware, started sending the information and could view the transmission on the oscilloscope. The main problem is that i cannot get it to display as a graph on Labview. Below are the steps taken in Labview:
- Started Labview 7.1 and picked 'New" under the menu.
- Chose 'Instrument I/O' and then picked the 'Read and Display VI template: GPIB, Serial...
-Then, at the block diagram, i clicked on the Instrument I/O Assistant, selected the instrument.
- Selected the next step, which was to query and parse. Sent the 'Identification command, *IDN? and got the following error when i run the step.
Error Code: Timeout expired before operation completed
VISA status code=bfff0015
Please guide me from here so that i can view the graph. I have been working on this for some days trying to figure it out and have been losing alot of hair and sleep over this. Please help, your help will be very much appreciated.
Thank You
Best regds,
Samarth

It's been my experience that when trying to query the a device's information in serial mode, that it's better to break up the *IDN? query into a single write, and two reads. The first read returns the number of bytes to read, and the second actually returns the data that you are looking for. Regardless of whether or not this works, I would recommend breaking up the query simply to be able to tell whether your problem is occuring at the write or reads. Please let me know if this helps!
Logan S.

How can I control PIC programmer with LabVIEW

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Please help this newbie make a start with LabView 7

Sorry for these very very basics but I failed to resolve these myself though I did my best.
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I cannot use VISA ( I
assume C++ or VB is needed for that, which is beyond my capabilities ).
Any help will be gratefully welcomed.
Peter van Daalen.

LabVIEW can do VISA and NI-488.2 directly; you don't need C++ or VB.
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If you can't find a driver, you will have to send and receive messages from the instrument directly, and this is where NI-VISA and NI-488.2 come in. The simplest way to get started with this direct communcation is to use the "Instrument I/O Assistant". This is in your "Functions->Input" palette, and you can read about it in the online help.
The Instrument I/O Assistant will bring up a dialog to select th
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In info-labview group Jack Hamilton mentioned that he has done that and also
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Also if you are on MS machine, then you can use Outlook to send mail using
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Try telneting to some SMTP server, type hello and you will see that response
is plain text.
"Hans-Jürgen Philippi" wrote in message
news:8i7ni8$475lf$[email protected]..
> Hi folks,
>
> I'm stuck with a task that obviously wasn't foreseen when NI created the
>
internet toolkit for LabVIEW - I want to send E-Mail via SMTP, not only
> inside our company's mail system but also to recipients with mail
addresses
> from other (internet) domains.
>
> Our internet mail server (like most others, too) requires an
> authentification before it allows to send mail, and since SMTP does not
have
> any authentification mechanisms it uses the poular "MAIL after POP"
> proceeding, that is: You have to look after incoming mails first with POP
> (post office protocoll), which is using a login name and password, and
> afterwards your machine is allowed to send internet mail via SMTP (simple
> mail transport protocoll) for several minutes.
> My problem is: The internet toolkit does not offer any POP functions at
all,
> so sending SMTP mail to a domain different from our own one does not work!
>
> Does anyone know where to go from here? Has any helpful soul ever
> implemented POP functions with LabVIEW?!?
>
> Many thanx,
> Hans-Jürgen Philippi
>
>
-----= Poste
d via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
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Is to possible to control a motor by using fuzzy logic toolbox in Labview and motor interfaced with PIC microcontroller

sir
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I am using report generation toolkit 1.1 with Labview 7.0 and Office 2003 professional. The create new report VI opens Excel but throws error (-2147167262- from automation open VI) when I try to open MS word. please help...

I am using report generation toolkit 1.1 with Labview 7.0 and Office 2003 professional. The create new report VI opens Excel but throws error (-2147167262- from automation open VI) when I try to open MS word. please help...

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THANK YOU .
=)
Solved!
Go to Solution.

Hi dvaldez2.
LabVIEW FPGA does not offer support for any third party hardware, other than the Spartan 3E XUP Starter Kit. Those are probably the drivers you downloaded.
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Sent via Deja.com http://www.deja.com/
Share what you know. Learn what you don't.

Hi everyone,i am currently trying to communicate with two computers at the moment using TCP/IP.I have done a simple server and client VI but the server doesnt seem to be writing the string im trying to send and it also gives an error message
Error 1 occurred at TCP Write in Server.vi
Possible reason(s):
LabVIEW: An input parameter is invalid. For example if the input is a path, the path might contain a character not allowed by the OS such as ? or @.
Please find attached the simple server and client VIs i have done.can you help me?
Thanks
Osowoaji
Attachments:
Server.vi ‏13 KB
Client.vi ‏13 KB

How to use a namespace in a C++ code communicated with labview

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Help me about communicating PIC microcontroller with Labview

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