DM300018 datasheet(73/115 Pages) MICROCHIP

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Using the dsPIC30F3014

DS51558A-page 67

10.6

IN-CIRCUIT DEBUGGING

The sample application program is intended to illustrate how the processor and

peripheral modules handle the functionality provided on the dsPICDEM 2 Development

Board. The MPLAB ICD 2 In-Circuit Debugger was used to program the sample

application into the dsPIC30F device. You can also use the MPLAB ICD 2 In-Circuit

Debugger to examine this baseline code to determine specific applicability to your

application.

The examination process requires that the dsPIC30F3014 device be reprogrammed to

recognize the MPLAB ICD 2 debugger rather than a programmer.

10.6.1

Setting Up MPLAB ICD 2 for Debugging

To change MPLAB ICD 2 from a programmer to a debugger:

From the

Debugger menu, click Select Tool>MPLAB ICD 2 to designate the

MPLAB ICD 2 as the debug tool in MPLAB IDE.

Reprogram the dsPIC30F device (

Debugger>Program menu).

Reset the program and run it. From the

Debugger menu, select Reset>Processor

Reset. Then select Debugger>Run.

Figure 10-3 shows the configuration bits for this set up.

FIGURE 10-3:

CONFIGURATION BITS WINDOW

10.6.2

Examining the Code

After the application has been reprogrammed to use the MPLAB ICD 2 as a debugger,

you can use MPLAB IDE to run, halt and step the program. You can set breakpoints to

halt the program and examine the actual code at any point. You can also examine the

contents of the RAM and registers whenever the processor is halted.

Refer to Section 2.3 “Getting Started” for an overview of the sample application.

Flowcharts illustrate each of these processes:

• Startup and initialization

• Main loop processing

• A/D conversion processing

• External interrupt processing

The dsPICDEM 2 Development Kit/Example Software/30F3014 folder

contains fully annotated code files that you can examine, compare and copy.

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