Unexpected values at the moment to receive serial data
Hi,
I've been a time trying to fix this and looking for forums but unfortunately I can't figure out how to solve it. I hope you can help me a bit.
I am working in a project which I have to send some information via ZigBee technology throught the serial port to my computer where there is another ZigBee module connected by serial port to LabView.
The point is that I am able to receive all the data well if I take some long delays and I really need to decrease my delays.
With low delays I receive zero values or even some values really out of range even when in some test I am just sending some fix values to debug it.
I think that it's a problem of synchronization but I don't know how to fix it.
PS: The reason cause I put a switch case even when the programm has to go out of the while when the Bytes at Port are zero, is cause i realise it doesn't. Just a way to be redundant in my goal.
I attached you the .vi file and a picture where it can be seen my problem (it's suppose to receive always some value around -1).
Thanks a lot for advance.
Attachments:
Untitled 2.vi 25 KB
chart.png 11 KB
Can you provide an example of expected data.
How to you determine the start or end of a data transmission?
It appears as though you are expecting to receive floating point numbers as a strings but you have no way of sychronizing to the start or end of a value.
Troy
CLDEach snowflake in an avalanche pleads not guilty. - Stanislaw J. Lec
I haven't failed, I've found 10,000 ways that don't work - Thomas Edison
Beware of the man who won't be bothered with details. - William Feather
The greatest of faults is to be conscious of none. - Thomas Carlyle
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Chat Transcript
Friday, October 4, 2013 05:55 AM
Duration: 81 minutes 28 seconds
Rebekah:
Welcome to AppleCare chat support. Please give me a moment to look over your information.
Rebekah:
Hi, Samia! My name is Rebekah. If we get disconnected, please chat us back. http://www.apple.com/support/ipod/contactEnter the case number from the initial email we sent you. This gives the next advisor you chat with immediate access to your case history.
Rebekah:
Could you please confirm your serial number? I want to be sure we provide the best service possible for you, Samia!
SAMIA:
Sure, it's 8L8395UY2C5
SAMIA:
My problem is with iTunes.
Rebekah:
Thanks for that confirmation. Just a heads up, this is iOS Tech Support. We do support iPod touches, iPads, and iPhones, but not the iPod classic. But no worries! I can get you in touch with a phone Advisor who can get you in touch with the department that specializes in iPod classics and would be able to better assist you. Would that be OK?
SAMIA:
I wasn't able to install the new version of iTunes (version 11.1.1). The installation keeps failing. The they suggested the I install it manually and that failed too. I will attach the message I received.
SAMIA:
I don't have a problem with iPod.
SAMIA:
Just iTunes
Rebekah:
No problem! We can certainly troubleshoot iTunes as much as possible. It may come to the point that you may have to transferred, but we can do as much as possible during this chat!
Rebekah:
Thanks for the screenshot. It is a bit small so I am unable to fully see the message that you are receiving. What is the error message you are receiving?
SAMIA:
This is the message I received in case you weren't able to open the attachment: "The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2324."
Rebekah:
Thanks for that info!
SAMIA:
Pleasure!
Rebekah:
What version of Windows (XP, Vista, 7) do you have?
SAMIA:
Windows 7
SAMIA:
Windows 7 Home Premium
Rebekah:
Thanks for that confirmation. I do apologize for the delay, Samia. I am researching this error code now. You mentioned trying to install iTunes manually. To be sure I am on the same page, what steps did you take to do that?
SAMIA:
Well when the indsatalltion failed I was given instructions to select Download Only from Tools and then install manually. When I did it, I window popped up with the following items: - AppleApplicationSupport
SAMIA:
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SAMIA:
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SAMIA:
iTunes64
SAMIA:
SetupAdmin
SAMIA:
I selected Repair in all of them instead of Remove and all worked but iTunes64
SAMIA:
That's when I received the message that I sent you earlier.
SAMIA:
By the way, this is the fir st time something like this occured. I never had problems with installation before.
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I completely understand what you're saying. Since that Repair did not resolve the issue, our best option is to uninstall iTunes and its components and redownload it. To do this, we will follow the steps in this article: Removing and reinstalling iTunes and other software components for Windows Vista, Windows 7, or Windows 8
Rebekah:
First, we will want to quit iTunes and/or Apple Software Update if those are open at this time.
SAMIA:
Rebekah, the instructions you gave says, "For Windows XP, follow these steps to remove and reinstall iTunes and other software components for Windows XP."
SAMIA:
I closed all applications
SAMIA:
Also, my iTunes doesn't open anymore after the new failed installation.
Rebekah:
The section that says "For Windows XP…" is in case we opened up the wrong article, as we have the one for Windows Vista, 7, or 8. There is a link to click ("these steps") in those directions that would take us to the article for uninstalling on a Windows XP.
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So no worries! We have the right article!
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On the computer, we will want to click on Start > Control Panel. In Control Panel, we will click the "Uninstall a program" link.
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I thought so after doing a little exploration.
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done
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Alright, we'll want to select iTunes from the list of currently installed programs. Then we will click Uninstall. When asked if you would like to remove iTunes, let's click Yes.
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After the uninstallation is complete, we don't want to restart your computer if you're prompted.
SAMIA:
Done
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Then if you see other iTunes entries on the list, we'll want to remove them the same way.
Rebekah:
Then we will remove all instances of Apple Software Update the same way you removed iTunes.
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Okay, but do I have to remoce iCloud as well?
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Rebekah, I received the same error message again when uninstalling
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We actually do not need to remove iCloud. After the Apple Software Update, we will want to remove all instances of Apple Mobile Device Support
Rebekah:
How strange! Are you able to click past that and allow the process to continue or has it stopped it completely?
SAMIA:
I am unable to uninstall iTunes either
SAMIA:
Stopped completely
SAMIA:
I treied clicking Repair
Rebekah:
Alright, after trying the Repair option, let's see if it will allow us to continue uninstalling or not.
SAMIA:
I tried that but unfortunately, it isn't working. I still get that same message with error code 2324.
Rebekah:
This error code is not something that I am finding in my sources, Samia. So there is a chance that it is being caused with the Windows computer itself. However, I did find a link that may be able to help with uninstalling iTunes from Windows' support site: http://support.microsoft.com/mats/Program_Install_and_Uninstall
SAMIA:
Rebekah, you're a genius! It worked! iTunes is no longer there. What next?
Rebekah:
Awesome! I'm glad that worked!
Rebekah:
To be sure I am on the same page, what was the last component we uninstalled?
SAMIA:
iTunes
SAMIA:
Shall I remove the Apple Application Support, Apple Mobile Device Support, and Apple Software Update
Rebekah:
That is correct! However, we do want to uninstall it in the order I mentioned above. So Apple Software Update first, Apple Mobile Device Support next, and then Apple Mobile Device Support.
SAMIA:
Got it, but is the second one to uninstall Apple Mobile Device Support OR Apple pplication Support?
Rebekah:
The second one is Apple Mobile Device Support.
Rebekah:
The Application Support will be the last component we uninstall.
SAMIA:
Thanks! I'm on it.
SAMIA:
Done! ll 3 are gone, well 4 with iTunes. Now what?
Rebekah:
Awesome! Also, I just noticed that I accidentally typed Apple Mobile Device Support twice, I do apologize for any confusion! Now we will remove all instances of Bonjour and then remove all instances of Apple Application Support.
SAMIA:
There was only 1 instance with Bonjour. I don't know what the instances are for Apple Application Support
Rebekah:
Yes, Bonjour is often only listed once. Is the Apple Application Support listed at all?
SAMIA:
No
SAMIA:
Since I removed it
Rebekah:
Oh, perfect! If it was removed, we should be set!
Rebekah:
We have removed iTunes and its components now! From here, our next step is to restart the computer. Then once you reboot, you can redownload iTunes from apple.com/itunes
Rebekah:
That should allow you to download iTunes!
SAMIA:
Shall I downloaad the latest vesion?
Rebekah:
You will want to first restart the computer as shown in the article. That will ensure that this process goes smoothly and that everything was removed correctly! Then you can try downloading iTunes again.
SAMIA:
Okay, thanks Rebekah!
Rebekah:
You're very welcome! I'm glad I could help! And of course if you have any issue after the reboot and download, you can always chat us back, as chat is open 24 hours! You will just need to give your case number and the next Advisor would have all my notes!
SAMIA:
Thanks again for all your help, for I couldn't have managed with out it. Have a nice day!
Rebekah:
You're very welcome! I know how important iTunes is and I'm glad we could get you on a path to resolution!
Rebekah:
I hope you have a lovely day!
Rebekah:
It's been a pleasure speaking with you! Thanks for chatting with us Samia. If you don't have any more questions, select End Chat from the upper left corner of the chat window.
SAMIA:
Will do, thanks. -
Unexpected value type for Item Tag Name ; expected System.Single, received
Hi,
I am using PCo 2.1 with MII 12.1 to extract values from some PI tags. When I run the query, I get this error -
Unexpected value type for Item <Tag Name>; expected System.Single, received System.String[Value = Scan Off]
Can somebody explain what I need to do to get the correct result?
Regards,
Chanti.To make the service return "whatever is passed", you have to take a step back and realize that there is a little understanding of XML Schema required.
When using a complexType, which is defined as a sequence, then you are implying an ordered sequence of elements. Default value for the 'minOccurs' attribute is 1. It's also important to understand that there is a difference between minOccurs=0 and nillable="true".
nillable="true" just means that the name element can carry a null value. If you want the name element to be optional, then you must use the minOccurs=0 and keep the maxOccurs to it's default value of 1. Using an array is just a bad work around. This is for deserialization (XML to JAVA).
The second part of you problem is on the serialization (or JAVA to XML). When you have a JAVA Bean, there is no way to make the difference between a member's value being null or not set, so it's impossible to decide if you need to send back a nul (xsi:nil="true"), an empty element <ns1:name/> or nothing.
That said, if you do want to go the XML route, you can use the dataBinding="false" flag in the different WSA command. Instead of converting XML into JAVA, you will have SOAPElement parameters, where you can do all you want (see WS user's guide [1] for details - chapter 16). Note that you have to make sure that the WSDL (your contract) reflect what you are doing on the wire (format of your messages), so that you do not geopardize your interoperability with other toolkit.
Note that this only applies to literal message formats (use attribute in WSDL), which is your case.
Hope this helps,
Eric
[1] http://download-west.oracle.com/otn_hosted_doc/ias/preview/web.1013/b14434.pdf
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