Help on using fconfigure -mode command for serial communication

[khung]

I can't use the -mode option in the fconfigure Tcl command. It doesn't understand this option. I'm using Tcl v8.3.4. The manual doesn't talk about it either. I looked into the source file of tclIO.c and in the Tcl_GetChannelOption() and didn't see it parsed for the -mode option. Is it true that this option only available in v8.4a4.

The other question I have is what do I need to do to run the serial COM port in DOS. I've ported Tcl v8.3.4 to DOS. It appears that I have to provide my own DOS serial COM port function for this to work. I'd appreciate any pointers.

 

[Bong]

I'm not familiar with -mode but -translation works fine. What are you trying to do with -mode? Bob Rashkin
rrashkin@csc.com

 

[khung]

I need to set the baud rate, parity bit, etc. for the serial port on PC which is done with the -mode option I believe based on what I read on the Tcl manual for fconfigure command.

 

[Bong]

According to my documentation (which is, I admit, the help file with the ActiveTCL download), teh -mode option (-mode baud,parity,data,stop
This option is a set of 4 comma-separated values: the baud rate, parity, number of data bits, and number of stop bits for this serial port. The baud rate is a simple integer that specifies the connection speed. Parity is one of the following letters: n, o, e, m, s; respectively signifying the parity options of ``none'', ``odd'', ``even'', ``mark'', or ``space''. Data is the number of data bits and should be an integer from 5 to 8, while stop is the number of stop bits and should be the integer 1 or 2. ) is associated with the "open" command. Bob Rashkin
rrashkin@csc.com

 

[AviaTraining]

Actually, the -mode option is used with the fconfigure command, but documented under the open command. I think the documentation needs some "refactoring."

Anyway, the -mode option has been supported by the fconfigure command since version 8.0. I'm not sure what the problem might be. As a test, you can try querying the settings of a serial port and see whether you get back valid information. I got the following on my Windows 2000 system:

[tt]% [ignore]set fid [open COM2: r+][/ignore]
file8daf48
% fconfigure $fid -mode
1200,n,7,1
% fconfigure $fid -mode 9600,n,8,1
% fconfigure $fid -mode
9600,n,8,1[/tt]

I'm not quite sure what you meant by the statement that you've "ported Tcl v8.3.4 to DOS." Real, live MSDOS-style DOS without Windows XX? In that case, I'm afraid I won't be much help. David Gravereaux, davygrvy@pobox.com, is the only person I know of who's recently done much poking about with Tcl in a true MSDOS environment. You might check out the thread on the Google Groups archive

http://groups.google.com/groups?hl=en&th=40005fba61b5effd&rnum=18,

and other related threads on the comp.lang.tcl USENET newsgroup (available through the Google Groups interface,

http://groups.google.com)

to see if you can find some useful information. - Ken Jones, President
Avia Training and Consulting

http://www.avia-training.com

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