Microchip Technology MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

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MPLAB® Starter Kit for

PIC24H Microcontrollers

User’s Guide

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MCUs and dsPIC® DSCs, KEELOQ

code hopping

MPLAB® STARTER KIT FOR PIC24H

MICROCONTROLLERS USER’S GUIDE

Table of Contents

Preface ...........................................................................................................................1

Chapter 1. Introduction

1.1 Overview ............. ........................................................................................... 7

1.2 Operational Requirements .............................................................................8

1.3 Board Setu p ............. .......................... .. .. ..................................................... ... 8

Chapter 2. Starter Kit Demo

2.1 Running th e D e mo ...................................... .. .. ........................... .. .. ............. ... 9

2.2 Understanding the Demo ................................................. .......................... ..14

2.3 Other Demo Co d e E x a mp le s ..................................................... .................. 15

Chapter 3. Develop an Application

3.1 Installing the Hardware and Software .............. .. ..........................................17

3.2 Setting Up an Example Application for Debug .............................................18

3.3 Running th e E xa mple Applicat io n ............. ............. .. .. .............. .. .. ............. .. . 19

3.4 Debugging the Example Application ............................................................19

3.5 Programming the Debugged Application ........................ .. ............................22

3.6 Creating Other PIC24H MCU Applications ................................................... 22

3.7 Determining Device Support and Reserved Resources ...............................22

3.8 Troubleshooting ............................................................................................23

3.9 Settings Dia lo g , Info Tab .............................................................................. 23

Chapter 4. Hardware

4.1 Application Functional Overview ..................................................................25

4.2 Debug Functional Overview .........................................................................28

4.3 Board Components ......................................................................................29

Appendix A. Schematics

A.1 Applicati o n S c h e ma tics ....... ......................................................................... 34

A.2 Debug Schematics .......................................................................................37

Index .............................................................................................................................39

Worldwide Sales and Service ....................................................................................40

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

NOTES:

MPLAB® STARTER KIT FOR PIC24H

MICROCONTROLLERS USER’S GUIDE

Preface

NOTICE TO CUSTOMERS

All documentation becomes dated, and this manual is no exception. Microchip tools and documentation are constantly evolving to meet customer needs, so some actual dialogs and/or tool descriptions may differ from those in this document. Please refer to our web site (www.microchip.com) to obtain the latest documentation available.

Documents are identified with a “DS” number. This number is located on the bottom of each page, in front of the p age number. The numbering convention for the DS number is “DSXXXXXA”, where “XXXXX” is the document number and “A” is the revision level of the document.

For the most up-to-date information on development tools, see the MPLAB Select the Help menu, and then Topics to open a list of available online help files.

INTRODUCTION

IDE online help.

This chapter contains general information that will be useful to know before you use the MPLAB chapter include:

• Document Layout

• Conventions Used in this Guide

• Warranty Registration

• Recommended Reading

• The Microchip Web Site

• Development Systems Customer Change Notification Service

• Customer Support

• Document Revision History

DOCUMENT LAYOUT

This document describes how to use the starter kit as a development and demonstrative tool for PIC24H MCU device’s processing capabilities. The manual layout is as follows:

• Chapter 1. Introduction – This chapter introduces the starter kit and provides an overview of its features.

• Chapter 2. Starter Kit Demo – This chapter describes how to use the starter kit demo software.

• Chapter 3. Develop an Application – This chapter describes how to debug application software on the starter kit using MPLAB

• Chapter 4. Hardware – This chapter provides a functional overview of the starter kit and identifies the major hardware components.

• Appendix A. Schematics – This appendix provides detailed schematic diagrams of the starter kit.

Starter Kit for PIC24H Microcontrollers (MCUs). Items discussed in this

IDE.

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

CONVENTIONS USED IN THIS GUIDE

This manual uses the following docum entat io n conven tion s:

DOCUMENTATION CONVENTIONS

Description Represents Examples

Arial font:

Italic chara c ters Referenced books MPLAB

Emphasized text ...is the only compiler...

Initial caps A window the Output window

A dialog the Settings dialog A menu selection select Enable Programmer

Quotes A field name in a window or

dialog

Underlined, italic text with right angle bracket

Bold characters A dialog button Click OK

N‘Rnnnn A number in verilog format,

Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>

Courier New font:

Plain Courier New Sample source code #define START

Italic Courier New A variable argument file.o, where file can be

Square brackets [ ] Optional arguments mcc18 [options] file

Curly brackets and pipe character: { | }

Ellipses... Replaces r epeated text var_name [, var_name...]

A menu path File>Save

A tab Click the Power tab

where N is the tota l number of digits, R is th e radi x and n is a digit.

Filenames autoexec.bat File paths c:\mcc18\h Keywords _asm, _endasm, static Command-line options -Opa+, -Opa- Bit values 0, 1 Constants 0xFF, ‘A’

Choice of mut ually exclus ive arguments; an OR selection

Represents code supplied by user

“Save project before build”

4‘b0010, 2‘hF1

any valid filename

[options] errorlevel {0|1}

void main (void) { ... }

IDE User’s Guide

WARRANTY REGISTRATION

Please complete the enclosed Warranty Registration Card and mail it promptly. Sending in the Warranty Registration Card entitles you to receive new product updates. Interim software releases are available at the Microchip web site.

Chapter 1. Introduction

Thank you for purchasing Microchip Technology’s MPLAB® Starter Kit for PIC24H Microcontrollers (MCUs). This kit is intended to introduce and demonstrate the features of the starter kit and the strong processing capabilities of PIC24H MCU devices.

The starter kit demonstrates a low-cost hardware and software solution for processing sensor signals and interfacing audio and visual displays. The board also includes signal conditioning circuitry, which helps users to perform a quick evaluation of the power of PIC24H MCUs by processing signals coming from an external sensor. In addition, the starter kit has on-board debug circuitry you can use to develop and debug your own applications without using other debug tools (i.e., in-circuit emulator or debugger).

This chapter introduces the starter kit and provides an overview of its features. Topics covered include:

•Overview

• Operational Requirements

• Board Setup

1.1 OVERVIEW

The MPLAB Starter Kit for PIC24H MCUs connects directly to the USB port on a personal computer (PC). The PC USB connection supplies communications and power to the board.

The starter kit includes debug and programmer circuitry that allows applications to be programmed onto the board’s PIC24H MCU device and then debugged, all using MPLAB IDE.

The sensor signals from an on-board triaxial analog accelerometer are routed to the fast on-chip ADC module in the PIC24H MCU for software processing. This feature allows the Starter Kit to be maneuvered by tilting. Based on the sensed acceleration due to the tilting of the board, a visual output is generated on the on-board OLED display controlled by the Parallel Master Port (PMP) module. Additionally, the speech segments are audibly produced through the on-board speaker via the output compare module as a Pulse-Width Modulated (PWM) digital waveform. This output is converted to an analog speech signal by a low-pass filter on the starter kit board. Alternatively, applications can use the conditioning circuitry to plug-in a wide range of analog sensors, grab the sensor signals through the ADC and process them.

In addition to the Recommended Reading listed in the Preface, the following manufacturers’ data sheets are also recommended as reference sources:

• Bosch Sensortec Data Sheet, BMA140 Triaxial Analog Acceleration Sensor

• National Semiconductor Corporation Data Sheet, LM4853 Boomer

Audio Power

Amplifier Series Mono 1.5W/ Stereo 300mW Power Amplifier (DS200334)

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

MPLAB® IDE

Starter Kit

USB

PIC24H

MCU

Speaker

OLED

Display

Accelerometer

1.2 OPERATIONAL REQUIREMENTS

To communicate with and program the MPLAB Starter Kit for PIC24H MCUs, the following hardware and software requirements must be met:

• PC-compatible system

• An available USB port on the PC or a powered USB hub

• CD-ROM drive

•Windows Systems.

Note 1: Only initial testing has been performed on the 32-bit Windows Vista

1.3 BOARD SETUP

Figure 1-1 shows the setup for the MPLAB Starter Kit for PIC24H MCUs. The USB connection provides communication and power to the board. As soon as the starter kit is powered through the USB cable, the preloaded demonstration starts.

FIGURE 1-1: MPLAB STARTER KIT FOR PIC24H MCUs SETUP

2000 SP4, Windows XP SP2, or Windows Vista (32-bit)

Operating System for this release. The 64-bit Windows Vista Operating System is not supported at this time.

(1)

Operating

Chapter 2. Starter Kit Demo

S2S1

MPLAB® STARTER KIT

FOR PIC24H MCU

Welcome

This chapter describes the MPLAB® Starter Kit for PIC24H Microcontrollers demonstration that is preloaded on the PIC24H MCU device, which showcases the multitasking of accelerometer sensing, the OLED display, speech playback, and the switch press monitor. This software application demonstrates how to use the MPLAB Starter Kit for PIC24H MCUs for signal capture and processing of the sensor signal, speech decoding and playback, and controlling the OLED display.

A detailed explanation of the starter kit hardware is provided in Chapter

4. “Hardware”. Topics covered include:

• Running the Demo

• Understanding the Demo

• Other Demo Code Examples

2.1 RUNNING THE DEMO

T o run the demo, follow these steps:

1. Power-up the starter kit by connecting the board to the USB port of a computer. You should briefly see a pop-up message in the system tray that states (1) new hardware has been found, (2) drivers are being installed, and (3) new hardware is ready for use. If you do not see these messages and the starter kit does not work, try reconnecting the USB cable. If reconnecting the USB cable does not work, refer to Section 3.8 “Troubleshooting”.

When powered up, an audible welcome message is played while simultaneously displaying the Start-up screen on the OLED display (see Figure 2-1).

MPLAB® STARTER KIT FOR PIC24H

MICROCONTROLLERS USER’S GUIDE

FIGURE 2-1: START-UP SCREEN

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

Acc. Graph

Ext. Sensor

Orientation

Games

S2S1

PIC24H Starter Kit

Acc. Graph

Ext. Sensor

Orientation

Games

S2S1

PIC24H Starter Kit

After the start-up exercise, the Home screen appears on the OLED display, as shown in Figure 2-2.

The Home screen has four cells from which to choose: Accelerometer (Acc.) Graph, External (Ext.) Sensor, Orientation and Games. The starter kit can be maneuvered by tilting it about the X and Y axes. Based on the direction of tilt, one of the four cells is highlighted for selection. Switch S1 or S2 can be pressed to select the highlighted cell.

FIGURE 2-2: STARTER KIT HOME SCREEN

2. Selecting the Acc. Graph cell starts the application, which captures the triaxial outputs of the accelerometer and displays them on the OLED display as a graph, as shown in Figure 2-3. Switch S1 or S2 can be pressed at any time to return to the Home screen.

FIGURE 2-3: ACCELEROMETER GRAPH

3. Selecting the Ext. Sensor cell (see Figure 2-4) starts the application, which captures the output of the external sensor that can be plugged-in at points TP12 and TP11.

FIGURE 2-4: SELECTING THE EXTERNAL SENSOR OPTION

Starter Kit Demo

Connect External Sensor...

S2S1

External Sensor Demo

Acc. Graph

Ext. Sensor

Orientation

Games

S2S1

PIC24H Starter Kit

Before displaying the external sensor signal an information screen is displayed, which prompts the user to plug-in an external sensor, as shown in Figure 2-5.

FIGURE 2-5: EXTERNAL SENSOR PROMPT

Switch S1 can be pressed to slow down or speed up the display (see Figure 2-6) in case the displayed signal is too fast or too slow.

FIGURE 2-6: EXTERNAL SENSOR SIGNAL

Switch S2 can be pressed at any time to return to the Home screen.

4. Selecting the Orientation cell (see Figure 2-7) starts the application, which

indicates the orientation of the starter kit. Patterns are displayed on the OLED display and messages are played out on the

speaker indicating Portrait, Landscape and Plane orientations (see Figure 2-8). The acceleration in each of the axes is displayed on the left side of the screen as a fraction of gravitational acceleration constant on earth, 1g = 9.8 m/s

FIGURE 2-7: SELECTING THE ORIENTATION OPTION

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

S2S1

X: 0g Y: +1g Z: 0g

Landscape

Home

Bomber Jet

Snake

S2S1

Games

S2S1

FIGURE 2-8: ORIENTATION PATTERNS

5. Selecting the Games cell displays a new screen with three cells: Home, Bomber Jet and Snake, as shown in Figure 2-9.

FIGURE 2-9: GAMES SCREEN

Selecting the Home cell will return you to the Home screen.

6. Selecting the Bomber Jet cell starts the Bomber Jet game. The Jet can be maneuvered on the X and Y planes of the display by tilting the

starter kit about X and Y axes. Asteroids and alien ships are encountered in the game. The jet should be maneuvered such that it doesn’t collide with the asteroid, alien ship, and isn’t hit by a missile from the alien ship. Pressing switch S1 turns on a protective shield, momentarily. The shield will destroy any asteroid or alien ship missile in its path. Pressing S2 releases missiles from the Bomber Jet. The alien ships and the asteroids are destroyed when hit by the missiles from the Bomber Jet. See Figure 2-10 for an example of the display during game play .

FIGURE 2-10: BOMBER JET GAME

Starter Kit Demo

S2S1

Bomber Jet

Mission Accomplished! Score: 1000 Press switch to continue...

S2S1

Snake

Snake is full grown! Score: 350 Press switch to continue...

The score increases whenever a missile fired by the Bomber Jet missile strikes an alien ship or an asteroid. Using the protective shield decreases the score. The game automatically exits to a Score screen after achieving a score of 1000 or when hit by an alien missile, or colliding with an alien ship or asteroid (see Figure 2-11).

FIGURE 2-11: BOMBER JET GAME SCORE

After the Score screen appears, Switch S1 or S2 can be pressed at any time to return to the Games screen.

7. Selecting the Snake cell starts the Snake game.

The snake can be maneuvered on the X and Y plane of the display by tilting the starter kit about X and Y axes. Multiple snake food appears, which the snake must eat. The snake grows in size when it eats. The snake should be maneuvered to eat the food such that it doesn’t collide with any of the four walls. See Figure 2-12 for an example of the display during game play.

FIGURE 2-12: SNAKE GAME

The score increases if the snake eats food. The game automatically exits to a Score screen after the snake grows a tail length of 25 rings or the snake hits any of the four walls (see Figure 2-13).

FIGURE 2-13: SNAKE GAME SCORE

After the Score screen appears, switch S1 or S2 can be pressed at any time to return to the Games screen.

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

ADC

PIC24H MCU

Wide Range of Sensors

ADC

Speaker

Triaxial

Analog

Accelerometer

PMP

OLED

Display

(128 x 64)

2.2 UNDERSTANDING THE DEMO

The PIC24H MCU device on the starter kit is pre-programmed with the main application demonstration. The CD that accompanies the starter kit also contains the main application code. As shown in Figure 2-14, this sample application uses the board to capture the triaxial acceleration signals from the accelerometer, and plays speech messages through the speaker with a visual display on the OLED display.

The board also features conditioning circuitry that provides the user the flexibility of plugging in a wide range of sensors and performing signal processing on the captured sensor signals.

Detailed descriptions of the basic modules are provided in Chapter 4. “Hardware”. The following sections give a brief functional description of these modules.

FIGURE 2-14: STARTER KIT BOARD

2.2.1 Accelerometer Interface

The starter kit has a triaxial analog accelerometer. The three (X, Y and Z) acceleration outputs are captured using the ADC module on the PIC24H MCU device. The ADC-captured accelerometer samples are processed differently in the PIC24H MCU based on the game chosen.

2.2.2 OLED Display Interface

The starter kit has a 128 x 64 OLED display. Different screens are displayed for the user to choose from. Depending on the stimulus obtained from the accelerometer and the switches, different screens are displayed, signals are graphed and games are controlled.

2.2.3 Speaker Interface

The speaker plays messages. The speech messages are compressed using the G .71 1 A-law and are stored in the program memory of the PIC24H. The PIC24H decodes the compressed data and generates PWM signals which are demodulated before being output through the speaker.

2.2.4 External Sensor Interface

The starter kit features an analog conditioning circuit which can be used by the user to plug in a wide range of external sensors. The differential output of the sensor flows through a differential amplifier and an anti-aliasing filter before being sampled by the on-chip ADC.

2.3 OTHER DEMO CODE EXAMPLES

The starter kit software CD includes another demo code example, External_Sensor_Demo.

The External_Sensor_Demo code example demonstrates the low-cost sensor signal capture and processing. When a sensor is plugged into the analog conditioning circuitry the code example captures the sensor signal through the ADC channel. The captured discrete time sensor signal can be processed inside the code example. Instructions are provided in the source file as to where user desired signal processing routines need to be added to process the sensor signal captured by the ADC.

The characteristics of the external analog sensor that can be used are provided in

Section 4.1.4 “Analog Conditioning Circuitry”.

Starter Kit Demo

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

NOTES:

MPLAB® STARTER KIT FOR PIC24H

MICROCONTROLLERS USER’S

Chapter 3. Develop an Application

The MPLAB Starter Kit for PIC24 MCUs may be used with MPLAB® IDE, the free integrated development environment available on Microchip’s web site. MPLAB IDE allows the starter kit to be used as an in-circuit debugger as well as a programmer for the featured device.

In-circuit debugging allows you to run, examine, and modify your program for the device embedded in the starter kit hardware. This greatly assists you in debugging your firmware and hardware together.

Special starter kit software interacts with the MPLAB IDE application to run, stop, and single-step through programs. Breakpoints can be set and the processor can be reset. Once the processor is stopped, the register’s contents can be examined and modified.

For more information on how to use MPLAB IDE, reference the following documentation:

• MPLAB

• MPLAB This chapter includes the following:

• Installing the Hardware and Software

• Setting Up an Example Application for Debug

• Running the Example Application

• Debugging the Example Application

• Programming the Debugged Application

• Creating Other PIC24H MCU Applications

• Determining Device Support and Reserved Resources

• Troubleshooting

• Settings Dialog, Info Tab

IDE User’s Guide (DS51519)

IDE Quick Start Guide (DS51281)

IDE On-line Help

3.1 INSTALLING THE HARDWARE AND SOFTWARE

To install the hardware:

If you have not already set up the hardware to run the demo, follow these steps:

1. Power-up the starter kit by connecting the board to the USB port of a computer.

You should briefly see a pop-up balloon in the system tray that states (1) new hardware has been found, (2) drivers are being installed, and (3) new hardware is ready for use. If you do not see these messages and the starter kit does not work, try reconnecting the USB cable. If reconnecting the USB cables does not work, see Section 3.8 “Troubleshooting”.

2. When powered up, the application starts and runs as described in Section 2.1.

To install the software:

Run the CD-ROM enclosed with the starter kit and install the software as directed.

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

3.2 SETTING UP AN EXAMPLE APPLICATION FOR DEBUG

The MPLAB IDE software that is installed on your PC by the starter kit CD-ROM automatically opens an example application that you may use to examine debug features of the starter kit.

To prepare the application for debug:

1. Launch MPLAB IDE. The example application project and related workspace will open. For information on projects and workspaces, see the MPLAB IDE documentation mentioned at the beginning of this chapter.

2. Select Projec t>Build Al l visible in the Build tab of the Output window.

3. Select Debugger>Select T ool>Starter Kits kit debug features (Figure 3-1): (1) the status bar will show Starter Kits as the debug tool, (2) a Starter Kit debug toolbar will be added, (3) the Debugger menu will change to add Starter Kit debug functions and (4) the Output window will display communication status between MPLAB IDE and the stater kit on the Starter Kit Debugger tab.

Also, several device resources are used for debug. For details, see

Section 3.7 “Determining Device Support and Reserved Resources”.

FIGURE 3-1: STARTER KIT AS DEBUG TOOL

to build the application code. The build’s progress will be

. MPLAB IDE will change to add starter

4. Select Debugger>Program MCU device on the starter kit. The debug programming progress will be visible in the Start e r Kit tab of the Output window.

Note: Debug executive code is automatically programmed in the upper program

memory of the starter kit device when the starter kit is selected as a debugger. Debug code must be programmed into the target device to use the in-circuit debugging capabilities of the starter kit.

to program the application code into the PIC24H

3.3 RUNNING THE EXAMPLE APPLICATION

The starter kit executes in either real-time (Run) or steps (Step Into, Step Over, Animate). Real-time execution occurs when you select Run in MPLAB IDE. Once the device code is halted, either by Halt or a breakpoint, you can step.

The toolbar buttons shown in Table 3-1 can be used for quick access to commonly used debug operations:

TABLE 3-1: TOOLBAR BUTTONS

Debugger Menu Debug Toolbar Debugger Menu DSK Toolbar

Run Program Halt Read

Animate

Step Into

Step Over

Reset

Breakpoints

To see how these options function, do the following:

1. Select Debugger>Reset>Processor Reset

2. Select Debugger>Run

3. Select Debugger>Halt

arrow will mark the line of code in the File window where the program halted.

4. Select Debug ger> Step Into

once. The green solid arrow will move down one line of code in the File window. Click the button several times to step through some code.

5. Select Debugger>Reset>Processor Reset

again. The arrow will disappear, meaning the device is reset.

or click Run. Observe how the application operates.

or click Halt to stop the program execution. A green solid

or click Step Into to step the program execution

Develop an Application

or click Reset to reset the program.

click Reset to reset the program

3.4 DEBUGGING THE EXAMPLE APPLICATION

For the example code given, everything works fine. However, when you are developing code, it will likely not work the first time and may need to be debugged. MPLAB IDE provides an editor and several debug features, such as breakpoints and Watch windows, to aid in application code debugging.

This section includes:

• Editing Application Code

• Using Breakpoints and Mouseovers

• Using Watch Windows

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

3.4.1 Editing Application Code

To view application code so it may be edited, do one of the following:

1. Select Edit>New existing code file.

2. Double click a file in the Project window to open an existing code file. See an example Project window in Figure 3-2.

FIGURE 3-2: EXAMPLE PROJECT

to create new code or Edit>Open to search for and open an

For more information on using the editor to create and edit code, see MPLAB Editor Help.

3.4.2 Using Breakpoints and Mouseovers

T o set a breakpoint in code:

1. Double Click the Gutter – Double click in the window gutter next to the line of code where you want the breakpoint. Double click again to remove the breakpoint.

Note: Double click must be set up for breakpoints. See the Edit>Properties

ASM/C/BAS File Type tab, and the check box for “Double-click Toggles Breakpoint”.

2. Pop-up Menu – Place the cursor over the line of code where you want the breakpoint. Then, right click to pop up a menu and select “Set Breakpoint”. Once a breakpoint is set, “Set Breakpoint” will become “Remove Breakpoint” and “Disable breakpoint”. Other options on the pop-up menu under Breakpoints are for deleting, enabling, or disabling all breakpoints.

3. Breakpoint Dialog – Open the Breakpoint dialog (Debugger>Breakpoints set, delete, enable or disable breakpoints. See MPLAB IDE Help for more information on this dialog.

) to

A breakpoint set in code will appear as a red hexagon with a “B” as shown in Figure 3-3.

FIGURE 3-3: EXAMPLE BREAKPOINT

Develop an Application

Once code is halted, hovering over variables pops up the current value of those variables (see Figure 3-3.)

Note: This feature must be set up. See the Edit>Properties, Tooltips tab, and

check the “Enable Variable Mouseover Values” check box.

3.4.3 Using Watch Windows

To use a Watch window:

1. The Watch window is made visible on the desktop by selecting View>Watch

contains four selectable Watch views (via tabs) in which to view variables (SFRs, symbols and absolute addresses).

2. Select an SFR or Symbol from the list and click the related Add button to add it

to the Watch window. Or click the “Address” column and enter an absolute address.

A Watch window populated with SFRs and Symbols will look like Figure 3-4. For more information on using Watch windows, see MPLAB IDE Help.

FIGURE 3-4: EXAMPLE WATCH

. It

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

3.5 PROGRAMMING THE DEBUGGED APPLICATION

When the program is successfully debugged and running, the next step is to program the device for stand-alone operation in the finished design. When doing this, the resources reserved for debug are released for use by the application.

To program the application, use the following steps:

1. Disable Starter Kits as a debug tool by selecting Debugger>Select Tool>None

2. Select Starter Kits as the programmer in the Programmer>Select Programmer menu.

3. Select Programmer>Program

Now the starter kit will run independently.

3.6 CREATING OTHER PIC24H MCU APPLICATIONS

This starter kit is just one way to use Microchip PIC24H MCUs in an application. Other tools and resources exist to support these devices.

• PIC MCU Development Boards – Many boards are available for developing appli-

cations. See our web site (http://www.microchip.com/) under Design>Development Tools>Demo Boards>PIC M CU.

• MPLAB C Compiler for dsPIC

optimization options than the student version for full-scale development. See http://www.microchip.com/c30.

• Application Notes – Example applications with code for using PIC24H MCU

features. See our web site (http://www.microchip.com/) under Design>App Notes & Source Code>16-bit PIC MCUs & dsPIC DSCs.

DSCs and PIC24 MCUs, Full Version – More

3.7 DETERMINING DEVICE SUPPORT AND RESERVED RESOURCES

Due to the built-in in-circuit debugging capability of ICD devices and the ICSP™ function offered by the debugger, the starter kit uses some on-chip resources when debugging. It also uses program memory and file register locations in the target device during debugging. These locations are not available for use by user code. In the MPLAB IDE, registers marked with an “R” in register displays represent reserved registers.

For information on device resources that are needed for in-circuit debugging, please refer to the MPLAB ICD 2 Help, found in MPLAB IDE under Help>Topics reserved resource information found under “Resources Used By MPLAB ICD 2” is the same for the starter kit.

. The device

3.8 TROUBLESHOOTING

3.8.1 Debug Connection Problems

While using the starter kit as a debugger, you may get the error “Unable to Enter Debug Mode” when programming the device. This can result from communication being lost between the starter kit and MPLAB IDE. To resolve this:

1. Unplug the USB cable from the starter kit.

2. Plug the USB cable back into the starter kit. MPLAB IDE should automatically reconnect to the starter kit. If this does not work, do

the following:

1. Check the USB connection between the PC and starter kit at both ends.

2. If using a USB hub, make sure it is powered.

3. Make sure the USB port is not in use by another device.

3.8.2 Programming Problems

If during the course of developing your own application you can no longer program the device on the starter kit, you may have set device Configuration bits to code-protect or some other state that prevents programming. T o view the settings of the Configuration bits, select Configure>Configuration Bits

Develop an Application

3.8.3 Build Problems

When using the starter kit as a debugger, make sure that the Build Configuration (drop-down list on the toolbar or item on the Debugger menu) is set to “Debug” or your code will not build correctly for debugging. When using the starter kit as a programmer, make sure that the Build Configuration is set to “Release” or your code will not build correctly for programmi ng .

3.9 SETTINGS DIALOG, INFO TAB

When you select Debugger>Settings or Programmer Settings, you will open the Starter Kit Settings dialog.

Currently, there is only one (Info) tab on this dialog, displaying the following information:

• Firmware Version: The version of firmware on the starter kit board.

• Debug Exec Version: The version of the debug executive that is loaded into the

device program memory to enable debug operation.

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

NOTES:

MPLAB® STARTER KIT FOR PIC24H

AN4

PIC24H MCU

Wide Range of Sensors

AN7

OC1

Speaker

Triaxial Analog

Accelerometer

OLED

Display

AN5 AN6

PMD7-PMD0 PMRD PMWR

Low-pass

Filter

Device

Audio Power

Amplifier

Low-pass

Filter

Differential

Amplifier

(128 x 64)

PMCS1 PMA0

MICROCONTROLLERS USER’S GUIDE

Chapter 4. Hardware

This chapter provides a functional overview of the hardware used in the MPLAB Starter Kit for PIC24H MCUs and identifies the major hardware components.

Topics covered include:

• Application Functional Overview

• Debug Functional Overview

• Board Components

4.1 APPLICATION FUNCTIONAL OVERVIEW

The block diagram shown in Figure 4-1 illustrates the mainstream operation of the starter kit.

FIGURE 4-1: STARTER KIT APPLICATION BLOCK DIAGRAM

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

Top Side

Gravity Vector

Pwm Signal From OCPWM Low-pass Filter Demodulated Audio Signal

4.1.1 Accelerometer Interface

The starter kit has a triaxial analog accelerometer (see schematics in Figure A-2). The accelerometer has three analog outputs, one for each of the three spatial dimensions (3D - X, Y , and Z). These three acceleration outputs are captured using the ADC inputs AN4, AN5 and AN6, respectively, on the PIC24H MCU device.The ADC is set to perform simultaneous sampling. The direction of acceleration and associated spatial dimensions can be observed in the Figure 4-2.

FIGURE 4-2: DIRECTION OF ACCELERATION AND ASSOCIATED

SPATIAL DIMENSIONS FOR THE T R IAXIAL ANALOG ACCELEROMETER

4.1.2 OLED Display Interface

The starter kit has a 128 x 64 pixel, monochrome organic LED array , which provides a wide range of graphics and alphanumeric display options. It is interfaced to the PIC24H MCU through the Parallel Master Port (PMP) module. The application uses the Microchip Graphics Library to communicate with the OLED display.

4.1.3 Speaker Interface

The speech messages are compressed using the G.711 A-law and are stored in the program memory of the PIC24H MCU. The wave files were G .711 compressed by using the dsPIC33F Speech Encoder Utility for G.711 provided on the CD and also available on the Microchip web site. When the demo application is running, the compressed speech messages are loaded from the program memory and decompressed using the G711 A-law decode algorithm and played out as a Pulse Width Modulated (PWM) signal using the output compare module on the PIC24H. This signal is passed through a 4th-order low-pass filter. This behaves like an integrator, whose output signal amplitude and frequency depends on the duty cycle of the input PWM waveform. The PWM frequency should be an integral multiple of the audio sampling rate. The output of this low-pass filter feeds an audio amplifier. The speaker is driven by an audio power amplifier (LM4853 Boomer). The speaker has a frequency range of 600 Hz to 22 kHz, with 8 Ohm impedance and rated power of 1W. See the schematics in Figure A-3.

FIGURE 4-3: PWM DEMODULATION

Hardware

Gain

---- - V

TP11VTP12

–()=

R57 R58==

R51 R53==

4.1.4 Analog Conditioning Circuitry

The starter kit features an analog conditioning circuit (see schematics in Figure A-4), which can be used by the user to plug in a wide range of external analog sensors. The analog conditioning circuit has a differential amplifier followed by an anti-aliasing low pass filter. The gain of the differential amplifier is given by Equation 4-1 in terms of the resistors used and differential input voltages at input points TP11 and TP12. The gain is fixed at 100. Any sensor with a differential compensated output voltage of less than 33mV can be used.

EQUATION 4-1: DIFFERENTIAL AMPLIFIER GAIN

The anti-aliasing filter is a 2nd-order low-pass filter, with a cut-off frequency of ~500 Hz (483.78 Hz). The highest frequency of the base band sensor signal is assumed to be less than 500 Hz. The output of the low-pass filter is connected to the ADC input AN7 on the PIC24H MCU device.

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

PIC18F67J50 Device

Status

LEDs

PIC24H MCU

Device

USB Mini-B

Jack

Serial EEPROM

25LC010A

3.3V LDO Regulator

12 MHz Crystal

SPI

ICSP™

4.2 DEBUG FUNCTIONAL OVERVIEW

The block diagram shown in Figure 4-4 illustrates the debugging/programming operation of the starter kit.

FIGURE 4-4: STARTER KIT DEBUG BLOCK DIAGRAM

The starter kit, with its built-in debugger/programmer, provides an all-in-one solution for debugging and programming applications using MPLAB IDE. Also, no additional external power supply is needed as power is supplied by the host PC’s USB port. See the schematics in Figure A-7 and Figure A-8.

The starter kit’s debugging/programming operations are controlled by a PIC18F67J50 MCU running at 48 MHz. The PIC18F67J50’s built-in USB engine provides the communications interface between the starter kit and the host PC.

Power to the starter kit is provided via USB, whose nominal 5V unregulated supply is regulated by a Microchip MC1727 3.3V low-dropout (LDO) linear regulator. Proper starter kit main system power is indicated by the green LED, D1.

The PIC18F67J50 MCU accomplishes debugging or programming of the target PIC24HJ128GP504 by controlling the target’s PGC1/EMUC1 and PGD1/EMUD1 signals. Target power is switched on/off via a low V

CE saturation PNP transistor

configured as a high-side switch. T arget clocking is also provided by the PIC18F67J50 MCU.

A Microchip 25LC010A serial EEPROM is used to store the starter kit’s serial number and debug control information.

4.3 BOARD COMPONENTS

D2 D3 D4 A1 A2 A3 A4

A11

A10

Figure 4-5 identifies the key starter kit hardware components. Table 4-1 provides descriptions for the hardware components.

FIGURE 4-5: STARTER KIT

Hardware

TABLE 4-1: STARTER KIT HARDWARE COMPONENT DESCRIPTIONS

Ref Component Ref Component

D1 Mini-B USB Connector (J1) A3 Audio Power Amplifier (U7) D2 MCP1727 (U1) A4 Anti-Aliasing Low-Pass Filter (Speech) (U6: A, B) D3 Low V D4 Debug St at us LED (D18) A6 Switch S1 D5 System Power STATUS LED (D19) A7 Switch S2 D6 PIC18F67J50 MCU (U2) A8 Differential Amplifier (External Sensor) (U4: A) D7 25LC010A SERIAL EEPROM (U3) A9 Anti-Aliasing Low-Pass Filter (External Sensor) (U4: B) A1 PIC24HJ128GP504 (MCU) (U5) A10 Sensor Differential Inputs (External Sensor) (TP11 and TP12) A2 Speaker (SP2) A11 Triaxial Analog Accelerometer (U8)

Legend:

D# = Debug components A# = Audio components

CE Saturation PNP Transistor Switch (Q1) A5 OLED Display (LED)

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

4.3.1 Debug Components

The following components support the debug function of the starter kit. See Appendix A. “Schematics” for debug schematics.

4.3.1.1 MINI-B USB CONNECTOR (J1)

Provides system power and bidirectional communication between the host PC and starter kit.

4.3.1.2 MCP1727 (U1)

3.3V Linear regulator. Regulates the USB unregulated voltage to 3.3 volts (with respect

to V

SS) and supplies the starter kit with system power.

4.3.1.3 LOW V

CE SATURATION PNP TRANSIS TOR SWITCH (Q1)

Provides target power (via high-side switching) to the PIC24HJ128GP504 (and ancillary circuitry) via control by the PIC18F67J50 programming/debugging MCU.

4.3.1.4 DEBUG STATUS LED (D18)

When lit, indicates that communication between the starter kit and MPLAB IDE has been successfully established.

4.3.1.5 SYSTEM POWER STATUS LED (D19)

When lit, indicates that the starter kit is powered via the USB.

4.3.1.6 PIC18F67J50 MCU (U2)

Controls the programming/debugging operations of the target PIC24HJ128GP504 device.

4.3.1.7 25LC010A SERIAL EEPROM (U3)

Provides nonvolatile parameter storage for the PIC18F67J50 MCU.

4.3.2 Application Components

The following components support the application portion of the starter kit. See Appendix A. “Schematics” for application schematics.

4.3.2.1 PIC24HJ128GP504 (MCU) (U5)

The PIC24HJ128GP504 microcontroller unit (MCU) provides the computation and processing resource for application development on the starter kit. This MCU features 128 KB of program Flash and 4 KB RAM. The application can either use the on-chip FRC or the external 12 MHz signal as clock source.

4.3.2.2 SPEAKER (SP2)

The speaker is connected to the Output Compare (OC) module. The OC module produces the PWM-modulated speech signal that is played through the speaker after filtering.

Hardware

Gain 2

R56 R59

--------- -

⎝⎠

⎛⎞

×=

4.3.2.3 AUDIO POWER AMPLIFIER (U7) The audio power amplifier is a National Semiconductor, LM4853 Mono 1.5W/Stereo

300 mW amplifier. Gain has been set to 3.3 using the resistors R56 and R59, as shown in Equation 4-2.

EQUATION 4-2: AUDIO POWER AMPLIFIER GAIN

4.3.2.4 ANTI-ALIASING LOW-PASS FILTER (SPEECH) (U6: A, B) The PWM signal from the output compare module on the PIC24H MCU device on the

board is demodulated by the PWM low-pass filter. This 4th-order filter uses two op amps (U6: A and U6: B) on the MCP617 dual op amp IC. The cut-off frequency of the filter is ~4 kHz.

4.3.2.5 OLED DISPLAY (LED) The starter kit has a 128 x 64 pixel, monochrome organic LED array , which provides a

wide range of graphics and alphanumeric display options.

4.3.2.6 SWITCH S1 AND SWITCH S2 The starter kit has two press switches, S1 and S2, which are connected to the I/O ports

on the PIC24H MCU device. The functions of these two switches are defined by the application.

4.3.2.7 DIFFERENTIAL AMPLIFIER (EXTERNAL SENSOR) (U4: A) The first op amp of the U4 component MCP617 is used to construct the differential

amplifier circuit, which is used in the analog signal conditioning circuit for the external sensor.

4.3.2.8 ANTI-ALIASING LOW-PASS FILTER (EXTERNAL SENSOR) (U4: B) The second op amp of the U4 component MCP617 is used to construct the anti-aliasing

low-pass filter circuit, which follows the differential amplifier circuit in the analog signal conditioning circuit for the external sensor.

4.3.2.9 SENSOR DIFFERENTIAL INPUTS (EXTERNAL SENSO R) (TP11 AND

TP12)

The interface holes, TP1 1 and TP12, can be used to connect the differential outputs of the external sensor. TP11 takes in the positive node and TP12 the negative node.

4.3.2.10 TRIAXIAL ANALOG ACCELEROMETER (U8) The starter kit features a triaxial analog accelerometer, BMA140, from Bosch

Sensortec.

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

NOTES:

MPLAB® STARTER KIT FOR PIC24H

MICROCONTROLLERS USER’S GUIDE

Appendix A. Schematics

This appendix provides the following schematics for the MPLAB Starter Kit for PIC24H Microcontrollers:

Section A.1 “Application Schematics”:

• Figure A-1: Processor Schematic

• Figure A-2: Accelerometer Schematic

• Figure A-3: Speaker Schematic

• Figure A-4: Differential Amplifier and Low-Pass Filter Schematic

• Figure A-5: Organic LED (OLED) Display Schematic

• Figure A-6: User Switches and Test Points Schematics

Section A.2 “Debug Schematics”:

• Figure A-7: USB Interface/Target Power Switching and Debug Input and Control

Schematics (Sheet 1 of 2)

• Figure A-8: USB Interface/Target Power Switching and Debug Input and Control

Schematics (Sheet 2 of 2)

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

VSS

VDD

AVSS

AVDD

VSS VDD

SWITCHED_+3.3V

R28

10R

C25

0.1

R29

10R

AUDIO_OUT

SWITCH_S2

TARGET_REFERENCE_CLOCK

SWITCHED_+3.3V

SWITCH_S1

SENSOR ACCEL_Z ACCEL_Y ACCEL_X

C24

0.1 UF

33 32

31 30 29 28

27 26

RB4 RA8

OSC0

OSC1

RC2

RC1 RC0 RB3 RB2

QFN44_8X8

RB9 RC6 RC7 RC8 RC9 DISVREG

CAP/VDDCORE

RB13

RB12

RB11

RB10

PMPD4

PMPD5

PMPD6

PMPD7

RB8

RB7

RB6

RB5

RC5

RC4

RC3

RA9

RA4

RA10

RA7

RB14

RB15

RA0

RA1

RB0

RB1

MCLR

PMPD3

PMPA0

PMPD2 PMPD1 PMPD0 PMPRD

1 2 3 4 5 6 7

8 9

10 11

121314

192021

PMPWR

PMCS1

RESET

TARGET_CLOCK

TARGET_DATA

R27

330R

R26

10K

SWITCHED_+3.3V

TARGET_MCLR

C18

10 uF

AVDD

BMA140

ACCEL_X ACCEL_Y ACCEL_Z

9 8

126

1 2 3 4 5

AMUX

X.OUT

Y.OUT

Z.OUT

TEST

SEL.0

SEL.1

VDD1

VDD2 GND1

GND2

C20

0.1 uF

C36

10 uF

A.1 AP PLICATION SCHEMATICS

FIGURE A-1: PROCESSOR SCHEMATIC

FIGURE A-2: ACCELEROMETER SCHEMATIC

FIGURE A-3: SPEAKER SCHEMATIC

AUDIO_OUT

C32

0.1 uF

R61

9.31K

R62

19.1K C38

2700 pF

C37

3300 pF

5 6

U6:B

MCP61-I/SN

R50

8.45K

R54

12.4K C26

2700 pF

C34

5600 pF

VINV+ VINB-

MCP617-I/SN

U6:A

C31

0.1

SWITCHED_+3.3V

3 2

VINA+ VINA-

C33

1.2

R59 20K

R60

100K

R56 33K

LM4853MM_MSOP10

SWITCHED_+3.3V

SP2

GC0251K-ND C39 100

R63

C30 1 uF

C29

0.1 uF

Left_IN

Left_OUT

Shutdown

HP_IN BLT_OUT+ GND

Bypass

Right_IN Right_OUT

9 8 7 6

1 2 3 4 5

AVDD

C28

47 nF

C27

0.1 uF

MCP617-I/SN

R52

R55

7.87K

13.3K C35

22000 pF

SENSOR

VINA+ VINA-

U4:A

R58

100K

VINV+ VINB-

U4:B

MCP617-I/SN

R57

100K

R51

R53

TP11

TP12

Schematics

FIGURE A-4: DIFFERENTIAL AMPLIFIER AND LOW-PASS FILTER SCHEMATIC

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

LED1

VPP

SWITCHED_+3.3V

100 uH

C45

C44 10

MBR0520L

MGSF1N02LT1

R38

.12 ohm 1%

R40 930K 1%

R39

110K 1%

C43

1000 pF

C40

6.8

C42

4.7

C41 1

R37

820K

LED_OLED_HS1101A

NC GND SW VDD2 FB SENSE V

BREF

VDD1 CB6

RES A0

D0 D1 D2

IREF

VCOMH

IREF

PMPD7

PMPD6

PMPD5

PMPD4

PMPD3

PMPD2

PMPD1

PMPD0

VCOMH

PMPRD

PMPWR

PMPA0

RESET

PMCS1

SWITCHED_+3.3V

VBREF

RESE

SWITCHED_+3.3V

1 2

3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

26 27

TP7 TP8

TP9 TP10

SWITCHED_+3.3V

R30

10K

B3F-1002-G

C23

0.1

SWITCH_S1

R31

10K

B3F-1002-G

0.1

C22

SWITCH_S2

FIGURE A-5: ORGANIC LED (OLED) DISPLAY SCHEMATIC

FIGURE A-6: USER SWITCHES AND TEST POINTS SCHEMATICS

Schematics

PIC18F67J50_TQFP64

VSS

VDD

VSS

VDD VSS

AVDD

AVSS

+3.3V

HOST_LED_RUN_DEBUG

TARGET_REFERENCE_CLOCK

TP5

CHIP_SELECT_SERIAL_EEPROM_1

POWER_GOOD_+3.3V

R20

330

R21

330

R23

TARGET_DATA

TARGET_CLOCK

R24

4.7K

R22

4.7K

+3.3V

R25

10K

R17

10K

SWITCH_TO_TARGET_+3.3V

C17

R12

330

27 pF

12 MHz

27 pF

+3.3V

WRITE_PROTECT_SERIAL_EEPROM1

HOST_ICSP_PGC

HOST_ICSP_PGD

HOST_MASTER_SPI_SDO

HOST_MASTER_SPI_SDI

HOST_MASTER_SPI_SCK

TARGET_MCLR

TEST_DEBUG_1

TEST_DEBUG_0

TP2

TP1

+3.3V

200K

HOST_ASYNC_SERIAL_RX1

HOST_ASYNC_SERIAL_TX1

+3.3V

SWITCHED_+3.3V

0.1 uF

1uF

+3.3V

(RF2 – DO NOT USE

Due to USB routing)

D+

D-

C13

10 uF

R2 330

HOST_ICSP_MCLR

234

101112

RF2

RF3/D-

RF4/D+

RF5

RF6

RF7

DDCORE/VCAP

RG4

MCLR

RG3

RG2

RG1

RG0

RE0

RE1

RB0

RB1

RB2

RB3

RB4

RB5

RB6/RGD

OSC2/RA6

OSC1/RA7

RB7/PGC

RC5/SDO1

RC4/SDI1

RC3/SCK1

RC2

RE2

RE3

RE4

RE5

RE6

RE7

RD0

RD1

RD2

RD3

RD4/SDO2

RD5/SDI2

RD6/SCK2

RD7

USB

ENVREG

RA3

RA2

RA1

RA0

RA5

RA4

RC1

RC0

RC6

RC7

A.2 DEBUG SCHEMATICS

FIGURE A-7: USB INTERFACE/TARGET POWER SWITCHING AND DEBUG INPUT AND CONTROL SCHEMATICS (SHEET 1 OF 2)

MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

Serial EEPROM

Status LED – Debug

PIC18F67J50 Bypass/Decoupling Capacitors

25LC010A_S08_SN

(VDD pin 26 and VSS)

Vcc

Vss

DD pin 38 and VSS)(VDD pin 57 and VSS)

+3.3V +3.3V

+3.3V

1uF

C12

C15

+3.3V

D19

GREEN

R14

330

HOST_LED_RUN_DEBUG

USB INTERFACE

(BUS POWERED)

TP3

BUS

D-

D+

ID (NC)

6,7,8,9

0R R4

0.01uF

0.001uF

200K

0.1uF

2.2uF

3.3V LDO

LINEAR REGULATOR

+3.3V

VIN

MCP1727_DFN8

VOUT

SENSE

CDELAY

PWRGD

GND

SHDN

VIN

123

765

200K

C10

C11

D18

0.1uF

1.0uF 0.01uF

2.2K

R13

330R

GREEN

R19

10K

R15

2.2K

R16

330R

C19

47pF

TP4

TP6

ZXTP25020CFH

SYSTEM POWER

INDICATOR

Logic ‘0’: Connect +3.3V to target

Logic ‘1’: Disconnect +3.3V from target

SWITCH_TO_TARGET_+3.3V

POWER_GOOD_+3.3V

SWITCHED_+3.3V

HOST MCU SWITCHABLE

3.3V REGULATED SUPPY

R10

C14

1uF

R11

10K

+3.3V

SCK

HOLD

HOST_MASTER_SPI_SDI

HOST_MASTER_SPI_SDO

HOST_MASTER_SPI_SCK

CHIP_SELECT_SERIAL_EEPROM_1

WRITE_PROTECT_SERIAL_EEPROM1

FIGURE A-8: USB INTERFACE/TARGET POWER SWITCHING AND DEBUG INPUT AND CONTROL SCHEMATICS (SHEET 2 OF 2)

MPLAB® STARTER KIT FOR PIC24H

MICROCONTROLLERS USER’S GUIDE

Index

Accelerometer Interface......................................14, 26

Amplifier Gain .....................................................27

Analog Conditioning Circuitry................................... 27

, 31

Board Components............................................ ......29

Board Setup....................................................... ...... ..8

Breakpoints.............................................................. 19

Build Configuration...................................................23

Configuration Bits.....................................................23

Customer Notification Service....................................4

Customer Support......................................................5

Debug ...................................................................... 28

Executive..........................................................18

Reserved Resources........................................ 22

Setup ................................................................ 18

Debug/Release........................................................23

Demo2 ..................................................................... 15

Demonstration Application.........................................9

Documentation

Conventions........................................................2

Layout................................................................. 1

External Sensor Interface ........................................15

Halt...........................................................................19

Hardware Installation...............................................17

Host Computer Requirements.................................... 8

Install........................................................................17

Internet Address.........................................................4

Microchip Internet Web Site.......................................4

MPLAB IDE..............................................................17

OLED Display Interface...................................... 14, 26

Operational Requirements.........................................8

Overview....................................................................7

Programmer.............................................................22

Reading, Recommended................................... ...... ..3

Reserved Resources................................................22

Reset........................................................................19

Run...........................................................................19

Schematics

Application

Accelerometer............................................34

Differential Amplifier and Low-Pass Filter.. 35

Processor...................................................34

Speaker .....................................................35

User Switches and Test Points..................36

Debug

USB Interface Schematic/Target

Power Switching Schematic ................37

Setup..........................................................................8

Software Installation.................................................17

Speaker Interface...............................................14

Speech Sampling Interface Schematic....................38

Step..........................................................................19

, 38

, 26

Troubleshooting.......................................................23

Unable to Enter Debug Mode...................................23

Warranty Registration........................................ ...... ..3

Watch Window.........................................................19

WWW Address...........................................................4

Worldwide Sales and Service

AMERICAS

Corporate Office

2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Techn ical Su pport: http://support.microchip.com Web Address: www.microchip.com

Atlanta

Duluth, GA Tel: 678-957-9614 Fax: 678-957-1455

Boston

Westborough, MA Tel: 774-760-0087 Fax: 774-760-0088

Chicago

Itasca, IL Tel: 630-285-0071 Fax: 630-285-0075

Dallas

Addison, TX Tel: 972-818-7423 Fax: 972-818-2924

Detroit

Farmington Hills, MI Tel: 248-538-2250 Fax: 248-538-2260

Kokomo

Kokomo, IN Tel: 765-864-8360 Fax: 765-864-8387

Los Angeles

Mission Viejo, CA Tel: 949-462-9523 Fax: 949-462-9608

Santa Clara

Santa Clara, CA Tel: 408-961-6444 Fax: 408-961-6445

Toronto

Mississauga, Ontario, Canada Tel: 905-673-0699 Fax: 905-673-6509

ASIA/PACIFIC

Asia Pacific Office

Suites 3707-14, 37th Floor To wer 6, The Gateway Harbour City, Kowloon Hong Kong Te l: 852-2401-1200 Fax: 852-2401-3431

Australia - Sydney

Te l: 61-2-9868-6733 Fax: 61-2-9868-6755

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ASIA/PACIFIC

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Tel: 44-118-921-5869 Fax: 44-118-921-5820

01/02/08

Microchip Technology MPLAB® Starter Kit for PIC24H Microcontrollers User’s Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Preface

Chapter 1. Introduction

1.1 OVERVIEW

1.2 OPERATIONAL REQUIREMENTS

1.3 BOARD SETUP

FIGURE 1-1: MPLAB STARTER KIT FOR PIC24H MCUs SETUP

Chapter 2. Starter Kit Demo

2.1 RUNNING THE DEMO

FIGURE 2-1: START-UP SCREEN

FIGURE 2-2: STARTER KIT HOME SCREEN

FIGURE 2-3: ACCELEROMETER GRAPH

FIGURE 2-4: SELECTING THE EXTERNAL SENSOR OPTION

FIGURE 2-5: EXTERNAL SENSOR PROMPT

FIGURE 2-6: EXTERNAL SENSOR SIGNAL

FIGURE 2-7: SELECTING THE ORIENTATION OPTION

FIGURE 2-8: ORIENTATION PATTERNS

FIGURE 2-9: GAMES SCREEN

FIGURE 2-10: BOMBER JET GAME

FIGURE 2-11: BOMBER JET GAME SCORE

FIGURE 2-12: SNAKE GAME

FIGURE 2-13: SNAKE GAME SCORE

2.2 UNDERSTANDING THE DEMO

FIGURE 2-14: STARTER KIT BOARD

2.2.1 Accelerometer Interface

2.2.2 OLED Display Interface

2.2.3 Speaker Interface

2.3 OTHER DEMO CODE EXAMPLES

Chapter 3. Develop an Application

3.1 INSTALLING THE HARDWARE AND SOFTWARE

3.2 SETTING UP AN EXAMPLE APPLICATION FOR DEBUG

FIGURE 3-1: STARTER KIT AS DEBUG TOOL

3.3 RUNNING THE EXAMPLE APPLICATION

TABLE 3-1: TOOLBAR BUTTONS

3.4 DEBUGGING THE EXAMPLE APPLICATION

FIGURE 3-2: EXAMPLE PROJECT

FIGURE 3-3: EXAMPLE BREAKPOINT

FIGURE 3-4: EXAMPLE WATCH

3.5 PROGRAMMING THE DEBUGGED APPLICATION

3.6 CREATING OTHER PIC24H MCU APPLICATIONS

3.7 DETERMINING DEVICE SUPPORT AND RESERVED RESOURCES

3.8 TROUBLESHOOTING

3.8.1 Debug Connection Problems

3.8.2 Programming Problems

3.8.3 Build Problems

3.9 SETTINGS DIALOG, INFO TAB

Chapter 4. Hardware

4.1 APPLICATION FUNCTIONAL OVERVIEW

FIGURE 4-1: STARTER KIT APPLICATION BLOCK DIAGRAM

4.1.3 Speaker Interface

FIGURE 4-3: PWM DEMODULATION

EQUATION 4-1: DIFFERENTIAL AMPLIFIER GAIN

4.2 DEBUG FUNCTIONAL OVERVIEW

FIGURE 4-4: STARTER KIT DEBUG BLOCK DIAGRAM

4.3 BOARD COMPONENTS

FIGURE 4-5: STARTER KIT

TABLE 4-1: STARTER KIT HARDWARE COMPONENT DESCRIPTIONS

EQUATION 4-2: AUDIO POWER AMPLIFIER GAIN

Appendix A. Schematics

A.1 AP PLICATION SCHEMATICS

A.2 DEBUG SCHEMATICS

Index

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