Labview VISA Flush I/O Buffer, how can they be used?

I need to flush the i/o serial buffer and the VISA Flush I/O Buffer or
VISA Clear seems to be useful.
How can they be used? I can't find any examples.
I am using Labview 7.1
Regards
kas

Do you mean what value to wire to the mask?
If so, here is a description:
VISA Flush I/O Buffer
Flushes the I/O buffer specified by mask.
mask designates the buffer to flush. Combine the buffer masks by bit to flush more than one buffer simultaneously. Use logical OR, also known as OR-ing or adding, to combine the values.
Mask Values
Hex Codes
Description
16
0x10
Flushes and discards contents of the receive buffer.
32
0x20
Flushes and discards contents of the transmit buffer by writing all the buffered data to the device.
64
0x40
Flushes and discards contents of the receive buffer.
128
0x80
No I/O to the device.

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VISA Flush I/O Buffer doesn't work on my Serial Write and Read VI

Hello,
I've been working on a serial interface .vi that communicate with simple GPRS/3G modems via AT commands.
This VI is working very well except when its used repeatedly:
Even if I use "VISA Flush I/O Buffer" or "VISA Clear" or clear the "Response" control string, the VISA Read keeps delivering the response concatenated after previous responses. Can you spot the bug in my VI?
I've had searched this forum for smiliar topics, but none of them were related.
Thanks,
Antonio

RavensFan escreveu:
You are going to keep seeing previous messages because you are storing them in a string in the feedback node. It doesn't matter what you do with the serial port or its buffer, you've created your own buffer with the feedback node.
Well... and it's working fine! Thank you very much RavensFan!
I started develloping this code as my first steps into Labview, and it's based on previous and bad programmed serial.vi that my coworker had done.
Right now, I have less than 3 months of LV experience and, believe it or not, I'm the company's specialist.
It's hard to solve all these little bugs!
Why are you using VISA events? I don't find them very commonly used, and I don't see where you are using them anywhere else.
Why are you using Bytes at Port? I don't see where you are controlling the speed of your loop, so you probably wind up reading the serial port a byte at a time or something like that.
Where are you sending your commands?
Why don't you use the termination character to determine when to stop reading on a VISA read so it will responde quickly, but guarnatee you get a complete message.
I used VISA events because I wanted to get rid of the constant "wait for X ms" function between read and write. This way I read the answer at the time it arrived. I can't remember why I used Bytes at Port, probably because the program required it. I got to take a look on this later.
The commands are sent through the Command control.
And about using the termination character, It's not garanteed that the device will always respond with a termination character. But I will talk again with the hardware team about this.
Again, thank you!

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I have used the below code to send a mail using javamail API?Even when I am sending my application does not have notified any of error/exceptions,But the message is not reached to I have given receipient's address in the to field.
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
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import java.util.*;
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String to "[email protected]";
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String subject = "hai";
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message.setRecipients(Message.RecipientType.TO,toAddresses);
Address[] ccAddresses = InternetAddress.parse(cc);
message.setRecipients(Message.RecipientType.CC,ccAddresses);
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message.setSubject(subject);
message.setText(text);
Transport.send(message);
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} catch (AddressException e)
status = "There was an error parsing the addresses. " + e;
} catch (SendFailedException e)
status = "<h1>Sorry,</h1><h2>There was an error sending the message.</h2>" + e;
} catch (MessagingException e)
status = "There was an unexpected error. " + e;
// Output a status message
response.setContentType("text/html");
writer.println("<title>sendForm</title><body bgcolor= ><b><h3><font color=green><CENTER>CALIBERINFO.COM</CENTER></h3>Your message was sent to recepient(s).<br><font color=red>"+"\n"+to);
writer.println("<br><br><a href=e:/mail/javamail/mail.html>back to compose</a>");
writer.close();
Please any one help me out from this probs.
Awaiting for yours reply,
or give me a reply to: [email protected]
Regards,
@maheshkumar.k

Hi,
how can send mails using hotmail/rediffmail domain name?In your java application,you specified www.rediffmail.com as your
smtp server.But that is the address of that website.Try will a smtp
server instead.For a list of free smtp servers,please visit http://www.thebestfree.net/free/freesmtp.htm
Hope this helps.
Good Luck.
Gayam.Srinivasa Reddy
Developer Technical Support
Sun Microsystems
http://www.sun.com/developers/support/

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Labview VISA Flush I/O Buffer, how can they be used?

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