Virtual Com ports never get reused after UN-installing of software that use

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• How do troubleshoot you a USB virtual COM port?

  Object

  Send orders of Labview to an Arduino board using the Advanced Serial write and Read.VI.

  The problem is that no orders are received by the Arduino.

  However, I can use the Serial Monitor built into the Arduino IDE to send commands to the Arduino and get the required result.

  I checked baud rate, the designation of COM port and the command is a simple as string 600,0.  The VI shows no error message.

  So, I'm looking for suggestions on how to troubleshoot a USB virtual COM port.

  Howard

  
  

• How can I create a USB Virtual COM Port

  Windows XP Professional / SP3 / 2002 Version

  How do I create a virtual COM Port to USB, so I can run software applications of a Bus USB flash Drive?
  The reason why I am eager to do it, is because I use an audio sequencer and it requires 1 GB of free disk space and at least 1 GB of RAM is recommended. My machine has 0.5 GB of RAM and a total of 6.55 GB of FREE space. My machine has a 256 MB RAM module and I bought another 256 MB RAM module. The manufacturer said that 512 MB of RAM is the maximum that can have my camera.
  My goal is to buy a 4 GB Flash drive and use it to add RAM on my machine. I am also wanting to be able to run software applications that are installed in the USB Flash drive.
  My basic goal is to install the DAW in the USB Flash drive and work with the program that is in the USB Flash drive, and I hope that will release of enough memory on my laptop.

  Hello

  Unfortunately, you cannot use a USB flash as a substitute for the RAM drive.

  Similar topics as an example with the info:

  http://answers.Microsoft.com/en-us/Windows/Forum/windows_xp-hardware/can-i-use-a-USB-flash-drive/70cf81fa-D113-4485-8305-c030665eeac0

  http://answers.Microsoft.com/en-us/Windows/Forum/windows_xp-hardware/can-a-USB-flash-drive-be-used-as-an-external-RAM/d711a70e-6878-4552-933C-423fa04fb222

• How to create a Virtual Com Port in Windows 7 for Palm HotSync

  I've just updated wo Windows 7 Pro 64 bit.  Because Palm does not support USB synchronization under a 64-bit system, it tells me that I need to create a virtual com port for my bluetooth device to synchronize.  I can't understand how to create this port under Windows 7.

  Hi Sonmox,

  Welcome to the Microsoft Answers site!

  In the Sub in view of the link you need to download the Palm Desktop and HotSync Manager. This software allows you to synchronize your device Palm with your computer, for your info is backed up and easily editable on your computer.

  Visit the following is given link of Palm and configure your Bluetooth device.

  http://KB.Palm.com/wps/portal/KB/common/article/49229_en.html

  When you set up your Palm device to synchronize using Bluetooth technology, you create a 'Bluetooth partnership' between your devices your computer (also known as "pair" or "trusted device"). This allows you to synchronize your device wireless and your computer have to authenticate each other, every time that you synchronize.

  Follow the steps in the document to sync your Bluetooth device.

  Hope this information is useful.

  Amrita M

  Microsoft Answers Support Engineer
  Visit our Microsoft answers feedback Forum and let us know what you think.

• Why can I never get a good picture on my imac when using Skype?

  Why can I never get a good picture on my imac when using Skype?

  I use the free Skype to talk to my friend in China every week. They always see me on their computer or phone clearly, but I can never get a good video of them, clues why? I see a good image of myself, but never of them. I can't adjust the settings of the built-in camera because they are fixed. Is this my router modem, which is 8 years old now. What is causing this problem. If you look on YouTube there are hundreds and thousands of good quality webcam videos then why am I having this eternal problem year after year? I've got El Capitan OSX

  If they can see you clearly, the problem is not on your side - at least not in your Mac. Could be the router or you internet connection. Otherwise: https://support.skype.com/en/skype/mac/

• I am trying to install a software that is available, but I get this error error 1330

  Matter of trust ERROR 266 WinVerify

  I am trying to install a software that is available, but I get this error 1330 error message: a file that is requires cannot be installed because the file E:\data1.cab has an invalid digital signature.  This may indicate that the cab file is correct: error 266 was returned by Win check Trust.  The company sent me an another install disc, but the same error message.  Is it matter of certificate authentication if yes, how can I fix.  Thank you

  I am trying to install a software that is available, but I get this error 1330 error message: a file that is requires cannot be installed because the file E:\data1.cab has an invalid digital signature.  This may indicate that the cab file is correct: error 266 was returned by Win check Trust.  The company sent me an another install disc, but the same error message.  Is it matter of certificate authentication if yes, how can I fix.  Thank you

  They should be able to guide you through some sokution for this.

  (The Publisher of the software).

  If you have this update installed:
  http://support.Microsoft.com/kb/978601

  you could try removing it, restart, install this:
  http://www.Microsoft.com/en-US/Download/details.aspx?ID=29434

  ... restart and then try again to your installation.  Otherwise they may need to view your certificates and remove/install-some manually for their product (if it is supported under Windows XP.)

• USB/Virtual COM port Communication problem with ESP301/LabWindows/CVI

  Hi all

  I have gone through different threads posted in this forum for similar issues and all tried, but nothing helped.

  I'm trying to communicate to the ESP 301 training monitor via a USB port configured as a serial COM port using a CR. Have it ' command is to get the version of the controller. The "write" "ComWrt" command works fine but the read command throws and error ("-99 operation e/s timed out"). I tried all the suggessions; with delays etc... who has explained (resolved by Mr. RobertoBozzolo) in the thread posted here, which explains an issue similar to that of the mine, but the help couln t.

  The code is attached.

  I am using 2012 LabWindows/Windows7 64 bit multi-hearts

  int Get_Version () {}

  comport = 3;

  BaudRate = 9600;

  parity = 0;

  DataBits = 8;

  StopBits = 1;

  inputq = 512;

  outputq = 512;

  ctsmode = 1;

  xMode = - 1;

  Timeout = 5.0;

  com_status = 1;

  char comstring [6];

  DeviceName [] = "COM3".

  Int State = 0;

  char * error;

  int bytes_written = 0;

  char Cmnd_String [50] = "";

  char Read_String [512] = "";

  strcat (Cmnd_String, "ve?")

  strcat (Cmnd_String, '\r');  Tried to 0x0d
  strcat (Cmnd_String, '\0');

  length = strlen (Cmnd_String);

  assert (Cmnd_String [length] == you? \r\0'); Tried Cmnd_String [50] = ' VE? \r\0 ".

  DisableBreakOnLibraryErrors ();

  RS232Error = OpenComConfig (comport, devicename, baudrate, parity, stop bits, inputq, and outputq data bits) ;// tried ouputq = - 1 too

  EnableBreakOnLibraryErrors ();

  If (RS232Error == 0) {}

  com_status = SetCTSMode (comport, LWRS_HWHANDSHAKE_CTS_RTS_DTR);

  MessagePopup ("Comport verified',"CTS Mode works very well");

  com_status = SetComTime (comport, timeout);

  }

  bytes_written = ComWrt (3, Cmnd_String, (Cmnd_String) StringLength);

  If (GetOutQLen (3)! = strlen (Cmnd_String))
  ComWrt (3, Cmnd_String, strlen (Cmnd_String));
    
  status = ReturnRS232Err ();      The status is 0
  error = GetRS232ErrorString (status); / / error number

  Delay (5.0); / / trying to add the time up to 20.0

  GetInQLen (3); Returns 0

  ComRdTerm (3, Read_String, 512, 13); Read from inputQ

  status = ReturnRS232Err ();               Status to return the error code '-99 '.
  error = GetRS232ErrorString (status); Error message "e/s timed Opération" out

  return the situation;

  }

  Can anyone suggest where I am doing wrong?

  Thanking you in advance.

  Another thing you should check is baud rate.  The ESP301 by USB is expected than the baud rate to 921600.  The function for OpenComConfig() group implies that it does not support this baud rate setting, but it seems to work perfectly.

• Virtual COM port do not get detected using labVIEW Installer

  
  

  Sorry for the thread...

  The windows device manager sees a USB port.

  The manufacturer's website indicates that for windows XP it didn't need a driver, windows use its own driver.

  I try older driver from the manufacturer, but I have the same result: the windows device manager sees a USB port.

  1. yes I have tried but it still sees a USB port.

  2. drivers from the manufacturer has not solved the problem.

  3. I will ask to help the manufacturer.

  Thank you for your help Ravens Fan,

  Concerning

• Virtual COM port blocking labVIEW

  I use virtual comport for one of my application and sometimes due to timeout or lack of data processing my grip of labVIEW and I am not able to stop him properly and the only solution is that I UN plug the USB cable and that translates into a fall of labVIEW. Any suggestion for avaiod the crash?

  Well sort the problem and the problem was due to unnecessary data processing and I'm the fft scene and so it crashes if I don't get the appropriate data. Nothing to with the lv. Thanks for the replies

• Can not get updates after SP2 installed on Win Vista Home

  I just installed SP2 on two computers. A Compaq laptop and the other a HP desktop computer. I can't receive any update on computers.

  Windows Update insists that the computer is up to date.

  In comparison, my own computer with Windows Vista SP2 has many applied updates.

  How can I fix this?

  Charles_W_Davis,
  If it's been a few days since you have installed SP2 and don't always get updates then you may need to reset Windows Update components.  Run the hotfix article tool, and then run Windows Update.  First, run the tool in normal mode, then test, if it is not corrected, then run it in aggressive mode.  Post back with the results. Mike - Engineer Support Microsoft Answers
  Visit our Microsoft answers feedback Forum and let us know what you think.

• Can't get internet after clean install.

  Hello

  I just finished a clean install with Windows XP Media 2005 SP 2 and I can't access the internet. I can't find network connections.

  What should I do?

  Hello

  Maybe this can help, http://www.ezlan.net/wireless.html

  Or for the son of connection http://www.ezlan.net/debug.html

• After you install the update by using Mail for Mac

  Right now I'm on El Capitan, 10.11.6 OS to my Mac laptop (MacBook Pro, 2012). I have just installed update 6.20 today, now I can't send emails in Mac Mail, it breaks down just when I try to convey.  Have not tried to answer yet!  Anyone else having this problem?

  Remove all accounts and add it again.

• Windows XP does not allow applications to use the virtual serial (COM) Ports

  Operating system: Windows XP Professional version 2002 Service Pack 3

  I want to use some applications to control virtual serial (COM) on a device of PEARL IOLAN STS8 D/TruePort ports in Windows XP Professional SP3. When I configure the IOLAN/TruePort I see the COM ports in the Windows Device Manager and I am able to configure my applications to use ports.  However, when applications try to open the serial ports, I get an error saying that the port is already in use or does not exist.

  I tried various alternatives to remove/re-add the ports 'in use' in Windows before you configure IOLAN/TruePort and applications. This (sometimes) allows me to use the ports but if the PC is turned off later and rebooted the problem reappears.

  Is there a reliable way to create and use virtual COM ports in Windows XP?

  The IOLAN/TruePort Pearl versions are:

  V4.3 Device Manager
  Firmware TruePort 6.4

  Hello

   

  The question you posted would be better suited in the TechNet Forums. I would recommend posting your query in the TechNet Forums.

  http://social.technet.Microsoft.com/forums/en-us/itproxpsp/threads

   

  I hope this helps!

• HP Envy X 2 cannot create com port error virtual 577

  Hi all

  Reinstalled Windows 8 32-bit HP ENVY X 2 and updated all drivers (again).

  Try to create the virtual com port with two different Xport and FransonGPSGate programs.

  These programs normally create a virtual Com Port that can be used by e.g. two different programs of maritime navigation at the same time.

  Xport responds: error code error Windows Xport pilot 577 from

  Franson GPSgate responds: unable to create virtual serial ports

  What is the solution for this problem?

  Thanks in advance for your answer!

  Learned a lot the last few weeks on Windows 8.

  I will guide you to acquire the same knowledge for Xport and fully operational Maxsea

  First read: http://www.pcworld.com/article/2027593/windows-8-put-its-hidden-security-features-to-work-.html

  You probably missed it but read what follows:

  "Included in the UEFI is a feature called Secure Boot, which avoids unauthorized operating systems and malicious software from running at startup."

  "Windows, you can type msinfo32 in the start menu search box or invites him to run it to find out the version of the BIOS.

  Within windows 8, I saw:

  -A start secure ACER (old machine): unsupported

  -To a HP Envy X 2 (new machine) Secure Boot: enabled.

  Secure boot disabled in Envy of HP X 2 and

  Xport and my older prog navigation are fully operational new.

  Good wind,

  -No.

• read com ports with command-line through labview?

  I'm trying to find a way to get a specific com port through the command via the command exec system prompt in labview. Is it possible to get the list of com port connections just like one you see in Device Manager where he will give the list the name of the device connected to a certain com port? I want to be able to automatically find the port com for a specific device.

  because it is a virtual com port that gets set up and I tried the vi to find resources VISA and it did not work. However, funny enough, just after I submitted this post, I found the solution to my problem. If you use exec system and type this command in the standard input:

  WMIC path Win32_SerialPort

  This will bring up a list of all com ports connected and very fast too. From there I can analyze the information I want and widdle down to the com of the desired usb device port.

  Maybe this can help someone on the road.