Datasheet

PICkit™ 3 Debug Express Lessons

3.6.3.2 STEP

Stepping, also known as single-stepping, allows the code to be executed one

statement at a time. There are three step options:

Step Into

This will step through statements one at a time until a function call is reached.

When Step Into is selected on a function call, the debugger will step to the first

statement in the called function. Shortcut key is <F7>.

FIGURE 3-28: STEP INTO

Step Over

This will step through statements one at a time. When a statement includes a

function call, the entire function will execute and the debugger will step to the next

statement after the function call. It will not step into the function. Shortcut key is

<F8>.

FIGURE 3-29: STEP OVER

Step Out

This completes execution of the current function and steps to the next statement

after the function call.

You can step through lesson code by using the shortcut key for Debugger > Step Over

<F8>.

3.6.3.3 RUN

Debugger > Run

<F9> will begin code execution until it is halted by the user or

encounters a breakpoint.

3.6.3.4 RESET

Debugger > Reset > Processor Reset

will perform a full reset of the target

microcontroller, so execution can begin again from the start of the program code. This

is only available when the target is halted.

Halt the demo board PIC18F45K20 if it is currently running, and select Debugger >

Reset > Processor Reset <F6> This will open up a new file in the MPLAB IDE called

c018i.c. This is the start-up code, part of the MPLAB C library. This library code

initializes the C software stack, assigns appropriate data values to any initialized data

variables, and jumps to the start of the application function main().