tcl/tk serial port access on PocketPC: fconfigure -mode does not work

Dear tcl/tk experts,

I need some help in accessing the serial port on my Pocket PC 
(Fujitsu Siemens Pocket Loox 410 with Windows Mobile 2003 operating
system).
I am running the tcltk846ce-arm installation from sourceforge and in
principle it works quite well.
Thanks to the tcltk community!

Now I want to connect to my GPS receiver via the serial port (over
bluetooth) with the following code:
  set mode "4800,n,8,1"
  set chan [open "com6:" r+]
  fconfigure $chan -mode $mode
  close $chan
This code works on my desktop PC running Windows98 without problems.

But on the Pocket PC it fails:
It seems that the serial port is opened successfully but then I get
the following error message: 
  Error in startup script: 
  bad option "-mode": 
  should be one of -blocking, -buffering, -buffersize, -encoding,
-eofchar, or -translation
      while executing
  "fconfigure $chan -mode $mode"
      (file "\SD-MMCard\tcl\nmea.tcl" line 3)


I have found other users reporting similar problems at
  http://wiki.tcl.tk/11134
and
  http://aspn.activestate.com/ASPN/Mail/Message/Tcl-bugs/816708
but no solution for the problem.

Could anybody help me with a solution or a work-around?

Thank you very much in Advance,

Helmut Schmidt





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