Serial communication mark space

I need to send Mark and Space characters using serial communications. I have not found a way to do this with LabVIEW. Anyone have any knowledge on this topic?
Matthew Fitzsimons
Certified LabVIEW Architect
LabVIEW 6.1 ... 2013, LVOOP, GOOP, TestStand, DAQ, and Vison

mfitzsimons wrote:
I need to send Mark and Space characters using serial communications. I have not found a way to do this with LabVIEW. Anyone have any knowledge on this topic?
I have found the answer to my own question. Using VISA Configure Serial Port you can set the parity to Mark or Space. Here is some information on mark and space:
Mark parity means that the parity bit is always set to the mark signal condition and likewise space parity always sends the parity bit in the space signal condition. Since these two parity options serve no useful purpose whatsoever, they are almost never used.
For example, when even parity is chosen, the parity bit is transmitted with a value of 0 if the number of preceding marks is an even number. For the binary value of 0110 0011 the parity bit would be 0. If even parity were in effect and the binary number 1101 0110 were sent, then the parity bit would be 1. Odd parity is just the opposite, and the parity bit is 0 when the number of mark bits in the preceding word is an odd number. Parity error checking is very rudimentary. While it will tell you if there is a single bit error in the character, it doesn't show which bit was received in error. Also, if an even number of bits are in error then the parity bit would not reflect any error at all.
Source: http://www.taltech.com/TALtech_web/resources/intro-sc.html
Matthew Fitzsimons
Certified LabVIEW Architect
LabVIEW 6.1 ... 2013, LVOOP, GOOP, TestStand, DAQ, and Vison

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Can't mount Android phone; Why not? {or, How to uninstall Mark/Space software?}

Ladies and Gents...
There's a Heritic in the building...
I'm a loyal T-Mobile customer, and I finally gave up on waiting for the iPhone.
So, I'm moving from my LEMON of a BlackBerry 8900 over to an Android phone: A Samsung Galaxy S II.
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Here follows my description of the two computers.
{A description of what happens can be seen "down-page".}
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This is the description of my wife's Mac Mini.
I'll call it the FIRST computer because things DO happen correctly on this machine.
Hardware Overview:
Model Name:    Mac mini
Model Identifier:    Macmini1,1
Processor Name:    Intel Core Duo
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Model Name:    Mac mini
Model Identifier:    Macmini2,1
Processor Name:    Intel Core 2 Duo
Processor Speed:    2 GHz
Number Of Processors:    1
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When I'm seated in front of my wife's Mac Mini,
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Settings > Wireless and Network > USB utilities.
On the window that then appears, it states:
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I click the button, and this dialog box pops up:
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I connect the cable, (and I do not press the button)...
The tan or "baby-puke green" Android symbol pops up on the top third of the screen, with a USB symbol in the place of its upraised left hand.
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nuts.
I've been doing this over and over and over again, there is just no getting around this. There is SOMETHING about my own Mac Mini that's causing a problem with mounting the Android phone.
The only plausible expanation that I can think of is:
Before R.I.M. released the Macintosh version of their "Blackberry Desktop Manager" application software, I had to purchase a compeditor's product and install it.
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=====
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Safe Mode (booting while holding down Shift key) should have disabled all the Login items, as well as any non-Apple startup items, including the launchd items.
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Fpga serial communication

hello,
i am using Crio and i am having a problem in serial communication even i flowed the exact steps from the exampls i always recive the same error which is "poly VI visa configure serial port: bad linkage to sub vi" is it a visa settup issue?? knowing that when i run NI MAX it indicates that there is a visa error under the peripheric and interfaces of my Crio.
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Can you show the code? With that error I would expect one or more broken wirtes.
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

Applet- RS232 serial communication

Hi,
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Thanx
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and in ur code try to use it to open ur com port
public String test() {
String drivername = "com.sun.comm.Win32Driver";
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and yet u need to signed the applet
1. Compile the applet
2. Create a JAR file
3. Generate Keys
4. Sign the JAR file
5. Export the Public Key Certificate
6. Import the Certificate as a Trusted Certificate
7. Create the policy file
8. Run the applet
Susan
Susan bundles the applet executable in a JAR file, signs the JAR file, and exports the public key certificate.
1. Compile the Applet
In her working directory, Susan uses the javac command to compile the SignedAppletDemo.java class. The output from the javac command is the SignedAppletDemo.class.
javac SignedAppletDemo.java
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Susan then makes the compiled SignedAppletDemo.class file into a JAR file. The -cvf option to the jar command creates a new archive (c), using verbose mode (v), and specifies the archive file name (f). The archive file name is SignedApplet.jar.
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Susan creates a keystore database named susanstore that has an entry for a newly generated public and private key pair with the public key in a certificate. A JAR file is signed with the private key of the creator of the JAR file and the signature is verified by the recipient of the JAR file with the public key in the pair. The certificate is a statement from the owner of the private key that the public key in the pair has a particular value so the person using the public key can be assured the public key is authentic. Public and private keys must already exist in the keystore database before jarsigner can be used to sign or verify the signature on a JAR file.
In her working directory, Susan creates a keystore database and generates the keys:
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The -dname "cn=jones" option specifies an X.500 Distinguished Name with a commonName (cn) value. X.500 Distinguished Names identify entities for X.509 certificates.
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keytool -help
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JAR Signer is a command line tool for signing and verifying the signature on JAR files. In her working directory, Susan uses jarsigner to make a signed copy of the SignedApplet.jar file.
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Ray
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keystore "/home/ray/raystore";
// A sample policy file that lets a JavaTM program
// create newfile in user's home directory
// Satya N Dodda
grant SignedBy "susan"
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</body>
</html>
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Note: Type everything on one line and put a space after Write.jp
The -J-Djava.security.policy=Write.jp option tells Applet Viewer to run the applet referenced in the SignedApplet.html file with the Write.jp policy file.
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9. Run the Applet in Browser
Download JRE 1.3 from Javasoft
good luck! [email protected]
i already give u many tips, i use 2 weeks to try this to success, hopw that u understand that, a result of success is not important, the process of how to get things done is most usefull!

Having issues with simple serial communication.

I followed a tutorial online to start learning basic serial communication. The tutorial involved shorting pins 1 and 3 on the Comm 1 port, and writing a simple program (attached). I edited the program a little, to show the varied results that I get when trying to write and read a simple phrase via serial port.
Could someone explain what causes the kind of result shown in "Serial Comm Example.png"? I believe it has to do with timing. Why would only parts of the phrase be transmitted?
Thanks,
Sarah
Solved!
Go to Solution.
Attachments:
Serial Comm Example.vi ‏30 KB
Serial Comm Example.png ‏139 KB

sarahzig wrote:
The tutorial involved shorting pins 1 and 3 on the Comm 1 port
Shouldn't that be pins 2 and 3? On a standard DB-9 serial port, pin 2 is the Recieve and pin 3 is the Transmit.
Now for your code...
1. Move the Configure Serial Port to be before the loop. You only need to configure the port once.
2. Close the port after the loop.
3. Handle your error after the close.
4. Stop your loop on an error or the stop button was pressed. You will need an OR in there.
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Hi, I use VISA write and read function in serial communication app, the device continuously sends 0x00 if it is not receive a request from Labview program running on PC.
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Hi software enigineer,
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Prior to background poll, lock the resource, then unlock it after the poll. Likewise for the setting change command.
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-AK2DM
~~~~~~~~~~~~~~~~~~~~~~~~~~
"It’s the questions that drive us.”
~~~~~~~~~~~~~~~~~~~~~~~~~~
Attachments:
SempahoreExample.jpg ‏256 KB

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http://forum.java.sun.com/thread.jspa?forumID=31&threadID=698876

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Hi! List,
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Serial_comm[2_read_single_character].vi ‏42 KB

I'm not sure I can understand you. If you want to read just one single character why can't you do so by just passing 1 to the Serial Read function as the number of bytes to read?
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a division of Test & Measurement Solutions

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