diff options
Diffstat (limited to 'doc/open.n')
| -rw-r--r-- | doc/open.n | 19 |
1 files changed, 16 insertions, 3 deletions
@@ -5,7 +5,7 @@ '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" -'\" RCS: @(#) $Id: open.n,v 1.4 1999/04/16 00:46:35 stanton Exp $ +'\" RCS: @(#) $Id: open.n,v 1.5 1999/07/22 00:06:09 redman Exp $ '\" .so man.macros .TH open n 7.6 Tcl "Tcl Built-In Commands" @@ -144,6 +144,14 @@ number of data bits, and number of stop bits for this serial port. The ``odd'', ``even'', ``mark'', or ``space''. \fIData\fR is the number of data bits and should be an integer from 5 to 8, while \fIstop\fR is the number of stop bits and should be the integer 1 or 2. +.TP +\fB\-pollinterval \fImsec\fR +. +This option, available only on Windows for serial ports, is used to +set the maximum time between polling for fileevents. This affects the +time interval between checking for events throughout the Tcl +interpreter (the smallest value always wins). Use this option only if +you want to poll the serial port more often than 10 msec (the default). .VE .VS @@ -153,8 +161,13 @@ number of stop bits and should be the integer 1 or 2. \fBWindows \fR(all versions) . Valid values for \fIfileName\fR to open a serial port are of the form -\fBcom\fIX\fB:\fR, where \fIX\fR is a number, generally from 1 to 4. An -attempt to open a serial port that does not exist will fail. +\fBcom\fIX\fB:\fR, where \fIX\fR is a number, generally from 1 to 4. +This notation only works for serial ports from 1 to 9, if the system +happens to have more than four. An attempt to open a serial port that +does not exist or has a number greater than 9 will fail. An alternate +form of opening serial ports is to use the filename \fB\e\e.\ecomX\fR, +where X is any number that corresponds to a serial port; please note +that this method is considerably slower on Windows 95 and Windows 98. .TP \fBWindows NT\fR . |