Reading from Hardware Devices

i want to develop an application that reads data from a device like a microphone and stuffs. Right now, i do not know where to start from and how to start. i will very much appreciate advices,assistance and suggestion from u guys.
joe...

thanks for your response. How do i convert the database into binary. One of the things bugging me is how to locate the device i want to read data from.
joe.

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HT4528 I can't seem to sync my iPhone with iTunes. I keep getting this message: iTunes could not connect to the iPhone because an error occurred while reading from this device. What can I do?

I can't seem to sync my iPhone to my computer; I keep getting this message: "iTunes could not connect to the iPhone because an error occurred while reading from this device." I get the same message with my iPad, even though they all share the same account. What can I do?

This could be caused by a USB connection issue. Make sure the iPhone is directly connected to the Mac using the USB cable it came with. Also, try disconnecting all other USB devices.
If you haven't already try resetting the iPhone by holding the Home and Sleep/Wake buttons until you see an Apple logo as described here:http://docs.info.apple.com/article.html?artnum=305743

Error occured while reading from the device

I need help!!! whenever i try to update my iphone to the new 1.1.1 version, i get an error message saying "error occured while reading from the device" the same message comes up when i try to restore it. i havent mod'd my phone in any way. does anyone know whats wrong or how to fix it?

I have the same problem. Was a solution ever given ?

"An error occured while reading from this device"

"An error occured while reading from this device" is the message I get whenever I try to sync my iPad to iTunes.
The only way I can sync is to do a restore and then put everything back on it.
Can anybody help?

Make sure you also unisntall
Bonjour,
Apple Mobile Device Service,
Quicktime
and there's a couple of others. there are Apple support articles, but I'm sorry I don't have the articles linked. Also ensure you reboot after all of the uninstalls and reboot you iPad as well. This all fixed my laptop, but as I said, my desktop PC is still acting funny.
As your laptop seems older, and the MB link is suspected on a particular group of newer motherboards, so I doubt your laptop motherboard is the common link.
You might want to double check that its USB2 ports.

I am trying to sync iphone 5 to itunes but it says "iTunes could not connect to the iphone as an error occured while reading from the device " and the iphone is not seen on itunes........

i am trying to sync iphone 5 to itunes but it says "iTunes could not connect to the iphone as an error occured while reading from the device " and the iphone is not seen on itunes........

First thing to try is to reset your device. Press and hold the Home and Sleep buttons simultaneously ignoring the red slider should one appear until the Apple logo appears. Let go of the buttons and let the device restart. And then reboot your computer.
See if that fixes your problem.

Why can't I read from a device on my RS232 port

I am attempting to write and read from a device on my computer's RS232 port. I attempted to use the Basic Serial Write & Read.vi example in 6.1 with no luck(I have also attempted to use the other serial examples with no luck). My application attempts to write a command to this device on the RS232 port and then read the response back from the device. Everytime I run the vi I receive a timeout error. It seems the timeout is occuring during the read portion. I have used another application(MTTTY) to send and recieve RS232 messages back and forth to this device, so I know the port and device are working. I have entered the same port settings I am using in the MTTTY application into the vi still with no success. One more thing, after I run the Basic Serial Write & Read.vi example, my other application can no longer read & write successfully to the device on the port. I need to power cycle my device before my MTTTY application will again be able to communicate successfully. Anyone have any ideas on what is going on?

I'm not familiar with the MTTY program but your problem is extremely common and usually the result of not sending a termination character at the end of the command string. Most serial instrument require this and it's usually a carriage return or line feed character. In the LabVIEW example, right click the string control where you are entering your command and select '\' Codes Display. Type a \r (carriage return) or \n (line feed) or a combination of both, at the end of the command. Your instrument manual should tell you exactly what is required.

Whenever i try and download itunes it says it cannot read from specified device, what can I do?

Whenever I try to download itunes it says it cannot read from specified device, what do I do?

Honestly, these are WAGs but they're all that I can think of.
First, try a system reset. It cures many ills and it's quick, easy and harmless...
Hold down the on/off switch and the Home button simultaneously until the screen blacks out or you see the Apple logo. Ignore the "Slide to power off" text if it appears. You will not lose any apps, data, music, movies, settings, etc.
If the Reset doesn't work, try a Restore. Note that it's nowhere near as quick as a Reset. Connect via cable to the computer that you use for sync. From iTunes, select the iPad/iPod and then select the Summary tab. Follow directions for Restore and be sure to say "yes" to the backup. You will be warned that all data (apps, music, movies, etc.) will be erased but, as the Restore finishes, you will be asked if you wish the contents of the backup to be copied to the iPad/iPod. Again, say "yes."
Finally, if the Restore doesn't work, let the battery drain completely. Then recharge for at least an hour and Restore again.

Can I use "SerialDemo" or "BlackBox" to read data from hardware device?

Hi All,
I want read data comm port which is been connected with hardware device(weight reader).Can I use "SerialDemo" or "BlackBox" sample programs provided with javax.comm package?
If yes do I need to do any modification in program as per my hardware device?
Please help
Thanks in advance to all
Basavaraj

You'll need to know what data is being sent from the device, and the example code SHOULD NOT be used.
It is only to show you HOW to do it.
Following the example code, build an application that reads from that port. Read the information from the manufacturer's website to get the details about the format of the data sent.

Cannot read from Specified device Error

I tried to install the BB Desktop App but I am getting a windows installer error "Cannor read form specified device error"
Any suggestions?
Should I just download the app online?

yes download it from the internet.
The search box on top-right of this page is your true friend, and the public Knowledge Base too:

ITunes could not connect to the iPhone " iPod" because an error occured while reading from the device

Please help me i need new music and i can't do anything because of this. I tried uninstalling and reinstalling itunes but the problem still exists.

Try:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Reboot the computer
- Try a differen USB port and cable.
- Try on another computer to helpo determine if you have an iPod or computer problem
- Restore from backup. See:
iOS: How to back up
Place the iOS device in Recovery Mode if necessary to allow the restore.
If recovery mode does not work try DFU mode.
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
- Restore to factory settings/new iOS device.
If still problem, make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
Apple Retail Store - Genius Bar

Having trouble opening connections and reading from Bluetooth devices.

Hello,
As the title states, I am having trouble opening connections and reading data from a Bluetooth device. We are using a PDA to communicate with LabVIEW. First, the Bluetooth Open Connection VI displays a timeout error half of the time. Second, when it does open, it does not read what the PDA is sending. Third, if it does allow an open connection, it will not do it a second time unless the devices are turned off.
I also have another related question. I am using a Linksys Bluetooth USB adapter, and the driver is proprietary. Labview requires the use of a Microsoft driver, and we are having problems going back and forth between the drivers. What Bluetooth receiver would you suggest using? The reason I ask is the fact that you have Bluetooth examples of client VI's. Therefore, you must use a similar device. Thank you for your time.
-Jon

Hi Jon,
I'm not sure what Bluetooth receivers were used to verify the functionality of the VIs. However, I still want to help you solve your issue. Please make sure that you are running the shipping examples and let me know what version of LabVIEW, what PC OS and what PDA OS you are using. Does the Microsoft driver work for your Bluetooth receiver if you uninstall the Linksys driver?
With your answers I'll do my best to help you out.
- Philip Courtois, Thinkbot Solutions

"Unable to read from Jukebox device" error!

hey...i've posted about this error before but i just barely was able to reconnect and get the actual error msg...its basicly not lettin me get data files off my zen xtra...i can copy files from my music library just fine...although when i tried deletin a genre from my player it never deleted it entirely...but back to the main prob...i just upgraded everything pretty much: firmware, drivers and nomad explorer...im thinkin it has to do wit one of those since it was fine before i did that...if it is the firmware is there anyway to downgrade to a previous version?...thnx for the help

sry...just wanted to add that i've read that zen xtra somehow works wit windows media player...i upgraded that to WMP 0

Mac Mail IMAP shows read message when already read from other devices

Mac Mail IMAP is setup on custom domain ([email protected]). When I open an email message through my iphone it shows it was read. Then when I go into the mail app on my iMac, it shows the message is unread. It still shows unread hours later and even when I click the "Get Mail" button
How do I make it so that Mac mail syncs when I check mail through other devices?
Thank you

Open Terminal in Utilties and copy/paste
This will send the attachment embedded inline. (This works in Snow Leopard, but not sure about Lion. Do a test first. If it doesn't work, just google "send attachment embedded + Lion." You don't actually have to send the message to see how it will appear.)
defaults write com.apple.mail DisableInlineAttachmentViewing 0
To reverse the setting, change the 0 to a 1
However, whether this will work or not will depend on what the e-mail client on the receiver's end does with it.

The iPhone cannot be synced, an error occured while reading from the device. Wont let me sync anything, ideas?

Yeah, The title says it all.
It's happend before so i tryed to reset my phone (didn't realise it deleted all my music which.. kinda anoyed me)
now it's doing it again

Just been watching the sync process, i get the error just after "finishing Sync"

Error while reading from device

I just upgraded from a 3gs to the iPhone 4 32GB. I upgraded to the newest iTunes. The phone is still using iOS 4.0.
When syncing large movies that worked fine on the 3gs, I get the message "Attempting to copy to the "my phone name" failed. An error occured while reading from the device.
Everything else synced fine, and some small homemade movies synced fine. Just the 2 that I had installed from "data discs" I got with DVDs won't sync. They play fine in iTunes.
Any thoughts????
Gene

Problem solved... after reading around on the Internet I tried some ideas. The one that fixed the problem was the fact that I had a 6 foot usb extension cable on my system (not front facing usb ports). I plugged the iPhone data cable directly into the back of the PC and it fixed the issue.
Thanks
Gene

Reading from Hardware Devices

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