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The Signal Display can be used if you want to view signals changing over a
longer time period than the Data Display allows. Unlike the Data Display
which records waveform data only while the Hevday Logic Module is being single stepped,
the Signal Display records waveform data while the Hevday Logic Module is running.
The Signal Display has the restriction of only being able to watch 39
single signal lines at once and these signals must be selected at compile time,
while the Data Display can have whole component instances watched at once.
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Modifying signals watched in the Signal Display
Before a signal can be watched in the Signal Display it must be defined in
the
Monitored Signal Definitions Dialog.
This is done while offline and is part
of the project design. While online, clicking the 'Modify Watched List' button
in the Signal Display will display the
Signal Monitoring Configuration Dialog
from where you can change which signals you want watched in the Signal Display.
Any signal which has a check in the watched column will be
displayed in the Signal Display. Signals can be both enabled and watched,
this means they appear in the Signal Display and will also act as
breakpoints. When a watched and enabled signal triggers a breakpoint a vertical line will
appear in the signal display view to signify this.
Two markers are provided in the signal display view. Clicking on the scope view with the
left mouse button will activate marker 1 at the clicked position. Clicking with
the right mouse button will activate marker 2. Marker 1 is drawn in red, while
marker 2 is drawn in green. The markers can also be moved by right clicking on
the marker position box and selecting either 'Move marker by clocks' or 'Move
marker by time'. When both markers are valid the clocks and time between them
will also be shown. Centring on either marker can be done by clicking on the
centre marker buttons.
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Clear All & Clear Waveforms
The Clear All button will remove all signals from the Signal Display, it is equivalent
to opening the
Signal Monitoring Configuration Dialog
and unchecking all checks in the watched column. If the circuit in the Hevday Logic Module
is running when this button is pressed, it will be paused.
The Clear Waveforms button will not remove any signals from the Signal Display,
but will remove all waveforms associated with the signals.
The Zoom In and Zoom Out buttons can be clicked or held down to adjust the zoom
level of the signal display view. Alternatively, if you have a mouse with a wheel on it,
zooming can be done by holding down the Ctrl key and scrolling the mouse wheel
backwards or forwards while the cursor is over the signal display view. The Zoom To
Normal button will return the scale of the signal display view to it's default setting.
The Zoom To Fit button will change the scale of the signal display view so that the
entire length of all waveforms are visible. The Zoom between markers button will
change the position and scale of the signal display view so that the portion
between the two markers takes up the entire view.
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Saving and opening waveforms
At any time while online the current set of waveforms can be saved to disk. The
user is prompted for a name to save the waveforms under. When offline these
waveforms can be re-opened using the 'Open or Manage Waveforms' button on the
Signal Display dialog. This button presents a list of the existing
waveforms to the user, where they can be opened or deleted.
The print button on the Data Display dialog brings up a standard print setup
dialog. For more information about printing waveforms please see
Waveform Print Options.
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