Debugging a design is a complicated
process and often needs to switch between views/reports. The Vitis analyzer supports this functionality and allows detailed inspection
of events and their associated timing. Cross-probing allows you to probe data in
different views allowing you to view I/O data from different perspectives, including
data on a particular tile or port, and at what time an event occurred, all within the
same window. The Trace and
Graph views can be shown in
the same window and moving the time marker in the Trace view or selecting object(s) in the Graph view applies to both views
simultaneously.
- Use the Window
Layout toolbar (circled in the following image) to
manage views/reports. In the following image, the Trace and Graph view are selected to appear in
the same window.
- The filter button function, shown circled in the following image, selects
tiles, functions, input/output ports, DMA, locks to be included or excluded from
trace view to focus on areas of interest.
- Drag the time marker to move the time backwards and forwards to evaluate
events at a given time. Events occurring after the selected time are highlighted
in the events table of the Trace view at the bottom of the screen.
- Select objects in the
Graph view to map graph, tiles, I/O
ports, and net connections to see the object ID, type, direction, data type,
buffers, and connected ports.
- Values of I/O ports are available in the
Trace view, shown circled in the
following image. This example design uses complex 16 bits value type (
cint16).
These steps show the Trace and Graph view for an output port object in the
Graph view (on the right
side) at 4,341,000 ns into the design execution and in the Trace view (on the left side) where the output
data is available. Moving the time marker to a later time in the Trace view, the events in the events table
(lower portion of the Trace
view) are highlighted to indicate which events happened at that time. This information
is useful to relate events in a multi-processor environment. Other examples can leverage
this cross-probing feature in the Vitis analyzer
tool.