User`s guide

MPLAB

IDE User’s Guide

Tutorial Step 14:

Reset your code (Debugger>Reset) and then run it by clicking the Run icon on the

toolbar. (Hover your mouse over a toolbar icon to see its meaning.) Then stop the

program by clicking the Halt icon.

3.16 VIEWING DEBUG WINDOWS

Standard debug windows allow you to view the contents of program, data or other types

of device memory to aid in the debugging of your application. These windows are

always visible on the View menu. Some items may be grayed out, however, if they are

not supported by the device or debug tool. For more on each debug window, see

Chapter 12. “MPLAB IDE Windows”.

• Disassembly Listing Window

• Hardware Stack Window

• Program Memory Window

• File Registers Window

• EEPROM Window

• Memory Usage Gauge

• LCD Pixel Window

• Locals Window

• Watch Window

• Call Stack Window

• Special Function Registers Window

Additional debug windows may appear on the menu depending on the debug tool you

select.

• Trace Memory Window (Simulators and Emulators)

Tutorial Step 15:

You will likely use the following windows to observe your running code:

• File (Editor) Window – Displays the actual assembly or C code.

• Program Memory Window – Displays your code as Opcode Hex, Machine or

Symbolic.

• Disassembly Listing Window – Displays the disassembled code.

• Watch Window – Displays the values of registers and bits that you specify to

“watch”.

The file window should already be open, containing your code. You will be using the

Watch window in the next step.

3.17 USING WATCH WINDOWS

In order to see what the application is doing, you will need to open a debug window to

observe register values. Although many registers and their values are displayed in the

File Register window and Special Function Register (SFR) window, you usually only

wish to see a few application-specific registers. To set up your own list of registers to

view, use Watch windows (View>Watch

To add an item to the Watch window:

• Choose an SFR or Symbol from the drop-down list and then click the

corresponding Add button

• Drag an item from the SFR, File Register or File window

• Click directly in the window under symbol name and typing in the item