halmeter - observe HAL pins, signals, and parameters
halmeter [-s] [pin|sig|param
name] [-g X-position Y-position [Width]]
halmeter 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.
- pin name
- Display the HAL pin name.
- sig name
- Display the HAL signal name.
- param
name
- Display the HAL parameter name.
- If neither pin, sig,
or param are specified, the window starts out blank and the user must
select an item to observe.
- -s
- Small window. Non-interactive, must be used with pin, sig,
or param 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.
- -g
- Geometry position. Allows one to specify the initial starting position and
optionally the width of the meter. Referenced from top left of screen in
pixel units. Handy when you want to load a lot of meters in a script with
out them displaying on top of each other.
Unless \-s 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.
- halmeter
- 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.
- halmeter
&
- 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.
- halmeter
pin parport.0.pin-03-out &
- Open a meter window, initially displaying HAL pin
parport.0.pin-03-out. The "Select" button can be used to
display other items. Runs in background.
- halmeter -s
pin parport.0.pin-03-out &
- Open a small meter window, displaying HAL pin parport.0.pin-03-out.
The displayed item cannot be changed. Runs in background.
- halmeter -s
pin parport.0.pin-03-out -g 100 500
&
- Open a small meter window, displaying HAL pin parport.0.pin-03-out.
places it 100 pixels to the left and 500 pixels down from top of screen.
The displayed item cannot be changed. Runs in background.
- halmeter -s
pin parport.0.pin-03-out -g 100 500 400
&
- Open a small meter window, displaying HAL pin parport.0.pin-03-out.
places it 100 pixels to the left and 500 pixels down from top of screen.
The width will be 400 pixels (270 is default) The displayed item cannot be
changed. Runs in background.
Original version by John Kasunich, as part of the LinuxCNC
project. Improvements by several other members of the LinuxCNC development
team.
Report bugs to jmkasunich AT users DOT sourceforge DOT net
Copyright © 2003 John Kasunich.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.