The ExternalOut points do not cause trace to be captured, but enable external signals to be generated by the compute logic of the ETM. The result of external outputs depends on the ASIC designer.
To set the ExternalOut points:
In the source or disassembly view, right-click on the gray margin to the left of the location to display context menu.
Select Insert Tracepoint... from the context menu to open the New Tracepoint dialog box. Figure 6.4 shows an example:
Note
The options that appear in this dialog box depend on the available resources and on the target that you are using. In some cases, you must clear an existing tracepoint or range to free up the resources you might require for a new tracepoint or range.
Select the required option from the New Tracepoint dialog box:
Set ExternalOut1 Point
Set ExternalOut2 Point
Set ExternalOut3 Point
Set ExternalOut4 Point.
Click OK. An arrow
is
placed in the left margin next to the line of code you have selected.
These options are available only for ETM-based hardware, and the number of ExternalOut points available is determined by the ASIC designer.
See also:
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