Microchip Technology MPLAB ICE, User Manual

Page: 76 / 192

MPLAB
®
ICE User’s Guide
DS51159B-page 76

2001 Microchip Technology Inc.
3.11.2 Complex Trigger as a Trace Memory Capture
Open the trace memory window by selecting Window>Trace Memory.
Figure 3.18: Trace Memory
All the instructions that were executed before the hardware break point, minus
one, are listed in the trace memory window.
The approximate trigger cycle will be highlighted in blue, and will be
numbered as cycle 0. All other cycles will be numbered based on this cycle.
To bring the trigger point to the center of the displayed cycles, select
Data>Find Trigger. To change the way data is displayed in the trace memory
window, select Options>Configure to bring up the Configure Trace dialog.
For more information on the trace memory window, see Section 6.5.
3.11.3 Complex Trigger Additional Functionality
The complex trigger can be set up to require that up to four events occur
before a break (or trace) occurs. The combination of these events can be
specified three ways:
• Sequential
• All Events
• Any Event
In addition, the complex triggering feature along with the trace memory
window can be used to perform the following functions:
• Time Between Events
• Filter Trace
For more information on complex triggering, as well as complex triggering
examples, see Section 6.3.
Note: Due to the timing of processor signals, the data information will be
skewed by one cycle. Destination data values are actually skewed
by two cycles, but for display purposes, the trace buffer display
compensates for one of the delayed cycles.