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PICDEM.net? 1 and dsPICDEM.net 2 Connectivity Dev Board User’s Guide
2.7.2
Step the Program
1. Press <F7> to single step the code. The green arrow moves to line 129, _reset
mov.w #0x850,w15 , as shown in Figure 2-21.
This code comes from a library (archive) file, libpic30.a , which is
automatically linked into C30 compiler projects. This code line initializes the stack
pointer and is part of the initialization code that the C30 compiler uses to set up
the stack and initialize data. Notice line 135, call main . This instruction calls
the main() routine from the dsPICDEMnet Tutorial.c source file.
FIGURE 2-21:
PROGRAM SINGLE STEPPED
2. Open the dsPICDEMnet Tutorial.c source file. Double click on the file name
in the Project Window if the file is not already open.
3. Select and right click line TMR1 = 0;, then choose Run to Cursor ., as shown
in Figure 2-22.
FIGURE 2-22:
RUN TO CURSOR COMMAND
Right-click TMR1 = 0
and select
Run to Cursor
The code runs briefly until it reaches the specified line. It then halts with the green
arrow pointing to the next line, as shown in Figure 2-23.
DS51471A-page 28
? 2004 Microchip Technology Inc.
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