Microchip Technology MPLAB ICE, User Manual

Page: 166 / 192

MPLAB
®
ICE User’s Guide
DS51159B-page 166

2001 Microchip Technology Inc.
The PICMASTER jumpers and switches are selected through the following
options in the Development Mode dialog.
C.5 How to Time Events
With PICMASTER, events could be timed through the Stopwatch dialog. With
MPLAB ICE, events are timed using the time stamp in the trace memory
window.
There are at least two ways to use the time stamp to time an event:
1. Set the program counter at the beginning of the event to time. Set a
software break point at the end of the event. Then run and view the trace
buffer when execution halts. The last time stamp is the time between the
events.
2. Using a Time Between Events trigger, set the Start Timer and Stop Timer
events appropriately, then run. The last time stamp value in the trace
buffer is the time between the two events. Using this method, it is not
necessary to halt the processor.
Hardware Configuration Items
Description PICMASTER MPLAB ICE
Emulation Power Jumper (+5VSYS/+5VEXT) Options>Development
Mode, Power tab
Clock Source Jumper (EXTCLK/INTCLK) Options>Development
Mode, Clock tab
Clock Frequency Oscillator installed on
probe Options>Development
Mode, Clock tab
Oscillator Type DIP switches Options>Development
Mode, Clock tab