Mark,
I have a Vista 15P, and the system normally works well for weeks to months at a time. Then, for no apparent reason, it randomly stops communicating. The log entries stop and I lose control of the system. A PC restart remedies the problem. Disabling and re-enabling the Monitoring status does not remedy the problem, and the following error is issued:
Error: System.UnauthorizedAccessException: Access to the port 'COM4' is denied. at System.IO.Ports.InternalResources.WinIOError(Int32 errorCode, String str) at System.IO.Ports.SerialStream..ctor(String portName, Int32 baudRate, Parity parity, Int32 dataBits, StopBits stopBits, Int32 readTimeout, Int32 writeTimeout, Handshake handshake, Boolean dtrEnable, Boolean rtsEnable, Boolean discardNull, Byte parityReplace) at System.IO.Ports.SerialPort.Open() at HSPI_VISTAALARM.VistaAlarm.OpenPort(Int16 Port) [1.2.5.0]
Is this a FTDI driver problem? A A2DUSB firmware issue? I thought all my versions were up to date a few months ago. It happens so rarely that I have let it go, but now it is starting to bug me. What versions should these be that you have found to be most stable?
Thanks in advance.
-BD
I have a Vista 15P, and the system normally works well for weeks to months at a time. Then, for no apparent reason, it randomly stops communicating. The log entries stop and I lose control of the system. A PC restart remedies the problem. Disabling and re-enabling the Monitoring status does not remedy the problem, and the following error is issued:
Error: System.UnauthorizedAccessException: Access to the port 'COM4' is denied. at System.IO.Ports.InternalResources.WinIOError(Int32 errorCode, String str) at System.IO.Ports.SerialStream..ctor(String portName, Int32 baudRate, Parity parity, Int32 dataBits, StopBits stopBits, Int32 readTimeout, Int32 writeTimeout, Handshake handshake, Boolean dtrEnable, Boolean rtsEnable, Boolean discardNull, Byte parityReplace) at System.IO.Ports.SerialPort.Open() at HSPI_VISTAALARM.VistaAlarm.OpenPort(Int16 Port) [1.2.5.0]
Is this a FTDI driver problem? A A2DUSB firmware issue? I thought all my versions were up to date a few months ago. It happens so rarely that I have let it go, but now it is starting to bug me. What versions should these be that you have found to be most stable?
Thanks in advance.
-BD
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