halmeter.1

CNC 的开放码,EMC2 V2.2.8版

.\" Copyright (c) 2006 John Kasunich
.\"                (jmkasunich AT users DOT sourceforge DOT net)
.\"
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.TH HALMETER "1"  "2006-03-13" "EMC Documentation" "HAL User's Manual"
.SH NAME
halmeter \- observe HAL pins, signals, and parameters
.SH SYNOPSIS
.B halmeter
[\fB-s\fR] [\fBpin\fR|\fBsig\fR|\fBparam\fR \fIname\fR]
.SH DESCRIPTION
\fBhalmeter\fR is used to observe HAL (Hardware Abstraction
Layer) pins, signals, or parameters.  It serves the same
purpose as a multimeter does when working on physical systems.
.SH OPTIONS
.TP
\fBpin\fR \fIname\fR
display the HAL pin \fIname\fR.
.TP
\fBsig\fR \fIname\fR
display the HAL signal \fIname\fR.
.TP
\fBparam\fR \fIname\fR
display the HAL parameter \fIname\fR.
.TP
If neither \fBpin\fR, \fBsig\fR, or \fBparam\fR are specified, the
window starts out blank and the user must select an item to observe.
.TP
\fB\-s\fR
small window.  Non-interactive, must be used with \fBpin\fR, \fBsig\fR,
or \fBparam\fR to select the item to display.  The item name is displayed 
in the title bar instead of the window, and there are no "Select" or "Exit"
buttons.  Handy when you want a lot of meters in a small space.
.SH USAGE
Unless \fB\-s\fR is specified, there are two buttons, "Select" and "Exit".
"Select" opens a dialog box to select the item (pin, signal, or parameter)
to be observed.  "Exit" does what you expect.

The selection dialog has "OK" "Apply", and "Cancel" buttons.  OK displays
the selected item and closes the dialog.  "Apply" displays the selected
item but keeps the selection dialog open.  "Cancel" closes the dialog
without changing the displayed item.

.SH EXAMPLES

.TP
\fBhalmeter\fR
Opens a meter window, with nothing initially displayed.  Use the "Select"
button to choose an item to observe.  Does not return until the window
is closed.
.TP
\fBhalmeter &\fR
Open a meter window, with nothing initially displayed.  Use the "Select"
button to choose an item.  Runs in the background leaving the shell 
free for other commands.
.TP
\fBhalmeter pin\fR \fIparport.0.pin-03-out\fR \fB&\fR
Open a meter window, initially displaying HAL pin \fIparport.0.pin-03-out\fR.
The "Select" button can be used to display other items.  Runs in background.

.TP
\fBhalmeter -s pin\fR \fIparport.0.pin-03-out\fR \fB&\fR
Open a small meter window, displaying HAL pin \fIparport.0.pin-03-out\fR.
The displayed item cannot be changed.  Runs in background.

.SH "SEE ALSO"

.SH HISTORY

.SH BUGS

.SH AUTHOR
Original version by John Kasunich, as part of the Enhanced Machine
Controller (EMC) project.  Improvements by several other members of
the EMC development team.
.SH REPORTING BUGS
Report bugs to jmkasunich AT users DOT sourceforge DOT net
.SH COPYRIGHT
Copyright \(co 2003 John Kasunich.
.br
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.