JeeMon can't open COM port on WinXP

(9 posts) (2 voices)

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mauzer

Hello,

I am trying to monitor the JeeNode with JeeMon on Windows XP Pro. JeeMon discovers my devices, but the error occurs when using 'SaveToFile' demo:

    couldn't open "COM28": no such file or directory
    couldn't open "COM28": no such file or directory
        while executing
    "open [my device] $mode"
        (class "::Serial::Connection" constructor line 9)
        invoked from within
    "Connection create $name {}$args"
        (procedure "::Serial::connect" line 3)
        invoked from within
    "Serial connect $usbid 57600"
        (procedure "::application::SaveToFile" line 14)
        invoked from within
    "::application::SaveToFile"
        (command bound to event)

With another terminal program I can connect to JeeNode. Were is problem with JeeMon?

Posted 25/10/2010 11:22:37

jcw

Is the device in use by some other process, perhaps?

Posted 26/10/2010 00:38:03
mauzer

I think no, because with Arduino environment's serial monitor or other terminal program I can connect.

Posted 26/10/2010 05:33:43
jcw

Strange. I just verified that it works on my XP Home setup. Had to install an FTDI driver on first plugin, but that was automatically dealt with through a web-install in Windows.

Posted 26/10/2010 07:53:54
mauzer

Strange to me too, because I got the same problem on Win Vista. But on Ubuntu it works.

Posted 26/10/2010 10:15:28
mauzer
With Process Monitor I see, that JeeMon searches COM28 folder in folder, where JeeMon.exe application persists. After manual creating COM28 folder, another error occurs:
```
    couldn't open "COM28": permission denied
```
Permission change not helps.
Posted 26/10/2010 11:56:40
mauzer

At last! It seems that JeeMon works only with serial ports named from COM1 to COM9 on Windows OS (in my case).

Posted 27/10/2010 10:11:50
jcw
Aha, good catch! - that problem has indeed been reported with Tcl before -
Now I can fix it. I added a few lines of gibberish to SysDep.tcl in JeeMon:
```
            # see http://talk.jeelabs.net/topic/569 and http://www2.tcl.tk/1838
            if {[regexp {^COM\d{2,}$} $p]} {
              set p "\\\\.\\$p"
            }
```
Please try again. By default, JeeMon will auto-update itself the next time you launch it.
Posted 27/10/2010 13:37:38
mauzer

The fix works!

Posted 27/10/2010 15:22:15