Microchip Technology PICDEM.net™ 2 User’s Guide

PICDEM.net™ 2

Internet/Ethernet

Development Board

User’s Guide

 2011 Microchip Technology Inc. DS51623D

Note the following details of the code protection feature on Microchip devices:

• Microchip products meet the specification contained in their particular Microchip Data Sheet.

• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.

• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.

• Microchip is willing to work with the customer who is concerned about the integrity of their code.

• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”

Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

Information contained in this publication regarding device
applications and t he lik e is provided only for your convenience
and may be su perseded by upda t es . It is y our responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life supp ort and/or safety ap plications is entir ely at
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hold harmless M icrochip from any and all dama ges, claims,
suits, or expenses re sulting from such use. No licens es are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.

Trademarks

The Microchip name and logo, the Microchip logo, dsPIC,
K

EELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,

32

PIC

logo, rfPIC and UNI/O are registered trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.

FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MXDEV, MXLAB, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip
Technology Incorporated in the U.S.A.

Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial
Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified
logo, MPLIB, MPLINK, mTouch, Omniscient Code
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,
PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance,
TSHARC, UniWinDriver, WiperLock and ZENA are
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.

SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.

All other trademarks mentioned herein are property of their
respective companies.

© 2011, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.

Printed on recycled paper.

ISBN: 978-1-61341-072-1

Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.

®

MCUs and dsPIC® DSCs, KEELOQ

®

code hopping

DS51623D-page 2  2011 Microchip Technology Inc.

PICDEM.net™ 2 DEVELOPMENT

BOARD USER’S GUIDE

Table of Contents

Preface ...........................................................................................................................5

Chapter 1. Introduction to the PICDEM.net 2
Development Board

1.1 Introduction ...................................................................................................11

1.2 Highlight s ......... .. ........................................................................................... 11

1.3 The Develo p m e n t K it: W h a t’s In The B o x ............ ........................................ 11

1.4 The PICDEM.net 2 Development Board ...................................................... 12

1.5 Developm e nt Ki t F irmware ........................................................................... 14

Chapter 2. Getting Started with the PICDEM.net 2 Development Board

2.1 Highlight s ......... .. ........................................................................................... 15

2.2 Network Pre c a u ti on s : Be fo r e You S ta rt ........................................................ 15

2.3 Using PICDEM.net 2 Development Board with a Test Network ...................16

2.4 Connecting the PICDEM.net 2 Development Board .................................... 16

2.5 Establishi ng C o m mu n ications ............ ............................. ............................. 19

Chapter 3. Reconfiguring and Restoring the
PICDEM.net 2 Development Board

3.1 Highlight s ......... .. ........................................................................................... 21

3.2 Reconfiguring the PICDEM.net 2 Development Board Hardware ................21

3.3 Reprogramming and Restoring the Application Firmware ............................24

Chapter 4. Troubleshooting

4.1 Highlight s ......... .. ........................................................................................... 25

4.2 Common Is su e s ............... ... .. ....................................................................... 2 5

Appendix A. PICDEM.net 2 Development Board

Schematics, Rev. 6 ......................................................................................................27

Index .............................................................................................................................33

Worldwide Sales and Service ....................................................................................34

 2011 Microchip Technology Inc. DS51623D-page 3

PICDEM.net™ 2 Development Board User’s Guide

NOTES:

DS51623D-page 4  2011 Microchip Technology Inc.

PICDEM.net™ 2 DEVELOPMENT

BOARD 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.

Document s are identifi ed with a “DS” n umber . This n umber is locat ed on the bot tom of each p age,
in front of the page 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 on-line Help files.

INTRODUCTION

This chapter contains general information that will be useful to know before using the
Development Board. Items discussed in this chapter include:

• Document Layout

• Conventions Used in this Guide

• Warranty Registration

• Recommended Reading

• The Microchip Web Site

• Customer Support

• Document Revision History

®

IDE on-line help.

DOCUMENT LAYOUT

This document describes how to use the PICDEM.net 2 Development Board as a
development tool to emulate and debug firmware on a target board. The manual layout
is as follows:

• Chapter 1. “Introduction to the PICDEM.net 2 Development Board” – Describes
what the PICDEM.net 2 Development Board is and what features are available on
the board.

• Chapter 2. “Getting Started with the PICDEM.net 2 Development Board” –
Describes how to connect and begin to use the PICDEM.net 2 Development Board.

• Chapter 3. “Reconfiguring and Restoring the PICDEM.net 2 Development
Board” – Provides instructions on changing hardware configuration, loading a web
page into the on-board EEPROM and reconfiguring the network settings.

• Chapter 4. “Troubleshooting” – Provides information on solving common prob lems.

• Appendix A. “PICDEM.net 2 Development Board Schematics, Rev. 6” –
Provides schematic diagrams of the Development Board.

 2011 Microchip Technology Inc. DS51623D-page 5

PICDEM.net™ 2 Development Board 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

Text in angle brac kets < > 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 [,

A menu path File>Save

A tab Click the Power tab

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”

any valid filename

[options]
errorlevel {0|1}

var_name...]

®

IDE User’s Guide”

DS51623D-page 6  2011 Microchip Technology Inc.

WARRANTY REGISTRATION

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

RECOMMENDED READING

This user’s guide describes how to use the PIC DE M .n et 2 De v el op me n t Bo a rd . Other
useful documents are listed below. The following Microchip documents are
available and recommended as supplemental reference resources.

Readme Files

For the latest information on using other tools, read the tool-specific Readme files in
the Readmes subdirectory of the MPLAB
contain updated information and known issues that may not be included in this user’s
guide.

“PIC18F97J60 Family Data Sheet” (DS39762)

Consult this document for detailed information on Microchip’s first family of 8-bit
microcontrollers with on-chip Ethernet capability. Reference information found in this
data sheet includes:

• Device pinout and packaging details

• Device electrical speci fic ati on s

• Device memory map

• List of peripherals included on the device

• Practical information on using the Ethernet interface module in connectivity
solutions

“ENC28J60 Data Sheet” (DS39662)

Consult this document for detailed information on the non-microcontroller Ethernet
interface. Reference information found in this data sheet includes:

• Device pinout and packaging details

• Device electrical speci fic ati on s

• Device memory map

• Practical information on using the Ethernet interface module in connectivity
solutions

Microchip TCP/IP Stack Help

This document provides information for getting started with the Microchip TCP/IP
Stack. It also serves as a programmer’s manual and reference documentation for the
many feat u re s a nd fu nc t io ns o f t h e stack. It is referred to th roughout t his manual as a
primary reference. The Help file is included with the TCP/IP Stack installation
(available at www.microchip.com/tcpip).

Preface

®

IDE installation directory. The Readme files

 2011 Microchip Technology Inc. DS 51623D-page 7

PICDEM.net™ 2 Development Board User’s Guide

THE MICROCHI P WEB SITE

Microchip provides online support via our web site at www.microchip.com. This web
site is used as a means to make files and information easily available to customers.
Accessible by using your favorite Internet browser, the web site contains the following
information:

• Product Support – Data sheets and errata, application notes and sample
programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software

• General Technical Support – Frequently Asked Questions (FAQs), technical
support requests, online discussion groups, Microchip consultant program
member listin g

• Business of Microchip – Product selector and ordering guides, latest Microchip
press releases, listing of seminars and events, listing of Microchip sales offices,
distributors and factory representatives

CUSTOMER SUPPORT

Users of Microchip products can receive assistance through several channels:

• Distributor or Representative

• Local Sales Office

• Field Application Engineer (FAE)

• Technical Support

• Development Systems Information Line

Customers should contact their distributor, representative or Field Application Engineer
(FAE) for support. Local sales offices are also available to help customers. A listing of
sales offices and locations is included in the back of this document.

Technical support is available through the web site at: http://support.microchip.com.

DS51623D-page 8  2011 Microchip Technology Inc.

DOCUMENT REVISION HISTORY

Revision A (September 2006)

• Initial Release of this Document.

Revision B (June 2007)

• Edits to Section 1.3 “The Development Kit: What’s In The Box”.

Revision C (April 2008)

• Revised to refer to the Microchip TCP/IP Stack Help for software-specific
documentation.

Revision D (April 2011)

• Revised schematic and text references for the latest hardware version (v6), which
adds auto-polarity detection circuitry and an EMI filter. (Refer to the latest version
of “PIC18F97J60 Family Data Sheet” (DS39762) for more information on these
hardware additions.)

- Deleted L1 1.5A, 60 Ohm Ferrite Bead

- Added L1, L3 300 mA, 120 Ohm Ferrite Beads

- Changed U3 to PIC18F97J60-I/PT (12x12x1 mm package)

- Added C53, C54 56 pF Capacitors

- Added U6, U7 Switches

- Added R53, R54 100K Resistors

- Change C19, C25, C30, C35 to 27 pF 5% Capacitors

- Changed the incorrect value of C34. The correct value is 1 F.

• Removed references to the accompanying software CD (not available with the
latest version of the Development Board) and replaced with references to the
product-specific area of the Microchip corporate web site.

Preface

 2011 Microchip Technology Inc. DS 51623D-page 9

PICDEM.net™ 2 Development Board User’s Guide

NOTES:

DS51623D-page 10  2011 Microchip Technology Inc.

Chapter 1. Introduction to the PICDEM.net 2

1.1 INTRODUCTION

The PICDEM.net 2 Development Board was created to allow developers to examine
Microchip’s latest available technology in embedded Ethernet and Internet solutions.
Using the free Microchip TCP/IP Stack source code, developers can experiment with
the preprogrammed Microchip TCP/IP Demo Application and learn how to integrate
connectivity into their applications.

1.2 HIGHLIGHTS

This chapter covers the following:

• The Development Kit: What’s In The Box

• The PICDEM.net 2 Development Board

• Development Kit Firmware

PICDEM.net™ 2 DEVELOPMENT

BOARD USER’S GUIDE

Development Board

1.3 THE DEVELOPMENT KIT: WHAT’S IN THE BOX

Your Development Kit contains the following items:

1. The PICDEM.net 2 Development Board

2. A standard CAT5 “straight-through” netwo rk cable for networki ng the board

3. A CAT5 “crossover” network cable for networking the board directly to a

computer

4. An “Important Information” card

5. “Using the PICDEM.net™ 2 Development Board” quick start guide

6. A warranty registration card

 2011 Microchip Technology Inc. DS51623D-page 11

PICDEM.net™ 2 Development Board User’s Guide

4

18

1

2

3

5

6

15

8

9

10

16

17

13

12

14

11

7

PICDEM.net™ 2

Development Board

PICtail™
Daughter

Board

1.4 THE PICDEM.net 2 DEVELOPMENT BOARD

The PICDEM.net 2 Development Board has all the features to begin developing
Internet connectivity appli ca tion s ov er an Ether net con nec ti on. The pre progr am med
firmware allows users to begin evaluating the board right out of the box with no
additional programming or configuration. All that is required to begin exploring the
board is a network-enabled computer with an Ethernet adapter and Internet browser
software. (See Chapter 2. “Getting Started with the PICDEM.net 2 Development

Board” for more specific information.)

FIGURE 1-1: PICDEM.net™ 2 DEVELOPMENT BOARD LAYOUT

Features on the PICDEM.net 2 Development Board include:

1. MICROCONTROLLER: A Microchip PIC18F97J60 microcontroller with built-in
Ethernet controller and transceiver is directly installed on the board (U3). The
device is clocked at 41.67 MHz and has been preprogrammed with demonstra­tion firmware from the Microchip TCP/IP Stack. Jumpers, JP15 and JP3, can be
used to measure the current consumption of the microcontroller.

2. ETHERNET CONTROLLER: In addition to the PIC18F97J60, the PICDEM.net 2
Development Board also features a Microchip ENC28J60 stand-alone Ethernet
controller. This device provides Ethernet connectivity for microcontroller-based
applications using a standard SPI interface.

3. MEMORY: A Microchip 25LC256 serial EEPROM (U4) provides 256 Kbits
(32 Kbytes) of storage for both web pages and nonvolatile configuration options.
The 25LC256 is programmable via an SPI interface.

4. LCD DISPLAY: A two-line by 16-character dot matrix display shows diagnostic
and error messages with the factory programmed firmware. It may be used for
other applications with appropriate reprogramming.

DS51623D-page 12  2011 Microchip Technology Inc.

Introduction to the PICDEM.net 2 Development Board

5. OPTIONAL EXTERNAL LCD CONNECTOR: Space is provided on the board for

the installation of a 30-pin, bottom contact FFC edge connector (Hirose
FH12-30S-0.5SH or equivalent). This will allow the use of an external LCD
character display module (such as one of the Optrex™ F-51320 series) to the
board via a ribbon cable. Note that using an external LCD module will require
appropriate changes to the application code, as well as the use of a ribbon cable
compatible with the connector.

6. TEMPERATURE SENSOR: This analog temperature sensor, a Microchip

TC1047 (U1), is connected to an analog I/O pin of the microcontroller. It can be
disconnected by a jumper.

7. USER-DEFINED LEDs: Eight LEDs are driven by digital I/O pins of the controller

(PORTJ) and may be used to simulate a digital output to an embedded device.
They may also be enabled or disabled by jumper selection on the board.

8. USER-DEFINED PUSH BUTTONS: These switches are connected to digital I/O

pins on the microcontroller (PORTB<3:0>) and may be used to simulate a digital
input in an embedded application.

9. USER-DEFINED POTENTIOMETER: One 10 kOhm potentiometer is connected

to an analog I/O pin of the microcontroller. It can be used to simulate an analog
input in an embedded application.

10. RESET PUSH BUTTON: This switch is tied to the MCLR

and is used to reset the board.

11. RJ-45 (10Bas e-T) MODU LA R CO NN E CTORS: T h e PI CDEM .ne t 2

Developmen t Bo ard is outfit ted with two Int egrated Connect or Modules (IC Ms),
one each for the PIC18F97 J60 an d ENC28J60 . T hese ICMs pr ovide t he modu­lar jack, as well as the necessary transformers, EMI suppression and status
LEDs, for Ethernet connectivity.

Each ICM has its own ACTIVITY and LINK LEDs on the left and right sides of the
ICM. These show if an Ethernet application is transmitting or receiving a packet,
and if the Ethernet connection is active. The LEDs for the PIC18F97J60 (on J1)
can be disconnected by jumpers if the I/O ports, RA0 and RA1, are to be used
for another purpose.

12. RJ-11 (SIX-WIRE) MODULAR CONNECTOR: This allows the Development

Board to be connected to Microchip MPLAB

®

ICD 2, MPLAB ICD 3 or MPLAB
REAL ICE™ in-circuit emulator for in-system programming, as well as advanced
application debugging.

13. SERIAL PORT : The PICDEM.net 2 Development Board includes an RS-232 port
with a DB9 connector (P1) and appropriate level-shifting hardware (U5). This can
be used for debugging or application development purposes, as needed.

14. I/O AND PICtail™ DAUGHTER BOARD ACCESS: A pair of female risers (J5
and J6) allow direct access to five of the microcontroller’s I/O ports (P ORTA
through PORTE). The even pins of J5 also serve as a stan dard interface between
the PICDEM.net 2 Development Board and Microchip’s PICtail daughter board
series.

15. PROTOTYPE AREA: A 9x20 grid with through-holes is provided for users to
breadboard additional circuitry for development. Three SOT-23 pads and a
SOIC-28 footprint are also provided for surface mounting common components.
Connections are provided for +3.3 V

DC, +5 VDC, +9 VDC and ground.

16. ON-BOARD POWER: Two on-board regulators provide separate 5 V

3.3 V

DC at 500 mA common current from the 9 VDC supplied at J7.

17. POWER-ON LED: This LED (D9) shows the board is powered up.

pin on the controller,

DC and

 2011 Microchip Technology Inc. DS51623D-page 13

PICDEM.net™ 2 Development Board User’s Guide

18. ETHERNET ID STICKERS (BACK SIDE): The numbers on the two stickers are
used to form the unique Media Access Control (MAC) addresses used by the
Ethernet transceivers to identify and filter packets. The number is the base 10
version of the last 6 hexadecimal digits of the 12-digit MAC address. The
board’s full address is formed by appendin g the number on the sticker to the hex
prefix “00:04:A3” (Microchip’s MAC address prefix). For example, the sticker
number, “12345”, represents 003039h; the full MAC address for the board is
thus “00:04:A3:00:30:39”.
One of these is assigned to the PIC18F97J60 and the other to the ENC28J60.
These MAC addresses are provided for evaluation purposes; both addresses
can be changed in software.

1.5 DEVELOPMENT KIT FIRMWARE

The most up-to-date information on demo solutions, as well as the latest version of the
free Microchip TCP/IP Stack, are available on the Microchip web site:

http://www.microchip.com/tcpip

This firmware installer includes:

• The comple te sou rce co de fo r t he free M ic roc hip TC P /IP Stack Demo Applica tion. If

you are restoring the Demo Application firmware and/or the demo web site as
originally shipped from the factory, use the appropriate files as described in the
St ack ’s H e lp file.

• Other example applications for use with PIC18F97J60 and ENC28J60 devices.

• Technical documentation for Microchip’s TCP/IP Stack.

DS51623D-page 14  2011 Microchip Technology Inc.

PICDEM.net™ 2 DEVELOPMENT

BOARD USER’S GUIDE

Chapter 2. Getting Started with the PICDEM.net 2

Development Board

2.1 HIGHLIGHTS

This chapter will cover the following topics:

• Network Precautions: Before You Start

• Using PICDEM.net 2 Development Board with a Test Networ k

• Connecting the PICDEM.net 2 Development Board

• Establishing Communications

2.2 NETWORK PRECAUTIONS: BEFORE YOU START

The PICDEM.net 2 Development Board, provided in your kit, is designed to demon­strate the possibilities of networking with embedded Microchip controllers over
Ethernet and the Internet. As with any experimental system, however, some
precautions are in order before you start.

Whenever new hardware or software is added to a network, it is always advisable to
create a separate test network that is isolated from your LAN. This allows testing the
new system in a controlled environment and minimizes the possibilities of network
interference from the new equipment. The major sources of potential interference
include:

• Addressing – Each device on the network must have a unique address. If

Dynamic Host Configuration Protocol (DHCP) is in use, the PICDEM.net 2
Development Board will automatically acquire a valid IP address. If DHCP is not
used, or a fixed address is required, adding the board to the network without
assigning an address may create network conflicts.

• Traffic Levels – While the on-board Ethernet controller will filter out unwanted

messages, a highly loaded network with many broadcast messages may place a
sizable burden on the Development Board.

• Data Security – Although it is unlikely that the addition of a sin g le devic e wil l

compromise the integrity or privacy of s ens itive infor mati on, it i s always a good
idea to perform extensive testing with new e quipm ent before addi ng it to a
secure network.

• Experimentation – Even as a simple microcontroller-based device, the

Development Board is capable of generating a high volume of network traffic
which may severely disrupt normal network operations.

 2011 Microchip Technology Inc. DS51623D-page 15

PICDEM.net™ 2 Development Board User’s Guide

2.3 USING PICDEM.net 2 DEVELOPMENT BOARD WITH A TEST NETWORK

Although the PICDEM.net 2 Development Board is ready to communicate on a
DHCP-enabled Ethernet network out of the box, you may have reasons not to do this.
Besides those already mentioned, there may be others, such as:

• You don’t have an Ethernet network available to experiment with

• Your network doesn’t use DHCP

• Your network administrator forbids you to put the board on the network

For these reasons, the PICDEM.net 2 Development Board can also communicate
directly with a desktop system, known here as a test network. In this configuration, the
Development Board acts as a DHCP server for your local desktop system.

Note: The DHCP server in the Microchip TCP/IP Stack can only provide a single

address to a single remote node. If it detects another DHCP server on the
network, it will automatically disable itself. This feature is enabled by default
in the factory preprogrammed demo based off of the TCP/IP Stack version
at the time of this writing (Version 5.31). Future Stack releases may change;
please check the TCP/IP Stack Help file for up to date information.

To function in a test network, the local system must meet the following basic
requirements:

• Any operating system capable of TCP/IP network communication

• Standard Ethernet card or integrated adapter, capable of supporting 10 Mbps

operation, with a RJ45 connector

• Any Internet browser software

2.4 CONNECTING THE PICDEM.net 2 DEVELOPMENT BOARD

There are two basic network configurations for the PICDEM.net 2 Development Board:
direct connection to a network and a test network connection to a PC through a
crossover cable.

If you are connecting the Development Board to a DHCP-enabled network, follow the
steps in Section 2.4.1 “Connecting to a Network”.

If you are connecting the board directly to a PC in a test network configuration, follow
the steps in Section 2.4.2 “Connecting Directly to a Host System”.

All of this assumes that the Development Board is running the preprogrammed Demo
Application firmware. The general principles for hardware discussed in the following
sections still apply for other applications and may be used as a guideline.

Note: This section assumes that an Ethernet card has already been installed in

the host system and is working properly, and that the TCP/IP protocol has
been installed and bound to the card. If this has not been done, or if you are
uncertain if this has been done, please contact your Information Systems
support person for further assistance.

DS51623D-page 16  2011 Microchip Technology Inc.

Getting Started with the PICDEM.net 2 Develop ment Board

9VDC from

Power Supply

PICDEM.net™ 2 Development Board

Network Cable

Ethernet Port

Ethernet Network Device

or

Network Port

Straight-Through

(J1)

PICDEM.n et™ 2

Development

Board

PICtail™
Daughter

Board

2.4.1 Connecting to a Network

This configuration is the basic method of networking the PICDEM.net 2 Development
Board. This assumes there is a stable Ethernet network using TCP/IP for
communications and that at least one DHCP server is present on the network.

To set up the board for direct networking (see Figure 2-1):

1. Unbox and unwrap the board, and set it on a non-conductive surface near the

host computer.

2. Connect the straight-through Ethernet cable to the board at Ethernet connector,

J1, then to the Ethernet network. This can be at a network port or an available
port on a network device (such as a hub, switch or router).

Note: Do NOT use the provided crossover cable if you are directly connecting the

board to a network or network device. The crossover cable is intended only
for connecting the board directly to a computer.

3. Apply power to the board (9 V

DC) at J7.

Note: The Development Kit does not include a power supply. An unregulated

2.5 mm center-positive DC supply of 7V to 12V (preferably 9V) with a
current capability of 500 mA is sufficient. If an external supply is needed,
use either Microchip part number AC002014 or AC162039.

FIGURE 2-1: CONNECTING THE PICDEM.net 2™ DEVELOPMENT BOARD

TO A NETWORK

 2011 Microchip Technology Inc. DS51623D-page 17

PICDEM.net™ 2 Development Board User’s Guide

Host Computer

Ethernet
Adapter

9 VDC from
Power Supply

PICDEM.net™ 2 Development Board

Network Cable

Crossover

Ethernet Hub or Switch

Network Cable

Straight-Through

B

A

Ethernet Port

(J1)

PICDEM.net ™ 2

Development

Board

2.4.2 Connecting Directly to a Host System

This option is used under the following situation:

• Evaluation of the Development Board as part of a test system;

• Operation on an isolated network is desired or;

• Connection to a deployed network is not possible.

To set up the board for connection to a local host (see Figure 2-2):

1. Unbox and unwrap the board, and set it on a non-conductive surface near the
host computer.

2. Depending on the network connection to be used, do one of the following:
For connections through an Ethernet hub or switch: Connect a standard

Ethernet cable to the board, then to a port on the Ethernet device (Option “A” in
Figure 2-2). The computer should already be connected to the hub or switch by
a straight-through cable.

For direct connections to a host system: Connect the Ethernet crossover
cable (supplied in the kit) to the board, then to the computer (Option “B” in
Figure 2-2).

3. Apply power to the board (9 V
Network” for power supply requirements.)

DC) at J7. (See Section 2.4.1 “Connecting to a

FIGURE 2-2: CONNECTING TO A HOST SYSTEM THROUGH AN

ETHERNET DEVICE (A) OR A DIRECT CONNECTION (B)

DS51623D-page 18  2011 Microchip Technology Inc.

Getting Started with the PICDEM.net 2 Develop ment Board

2.4.3 Confirming Operation

Once the PICDEM.net 2 Development Board is properly connected and powered up,
you should see all of the following:

• User LED D8 (tied to RJ0) is blinking

• User LEDs D1 through D7 are dark

• The green LINK LED on J1 is lit

• The LCD display shows the message:

TCPStack vx.xx
?.?.?.?

where “?.?.?.?” is the IP address currently in use by the board. This address is
either assigned by a DHCP server, automatically configured by the AutoIP
module, or the value defined in the TCPIPConfig.h configuration file.

Note: The actual version of the firmware will be reflected in the first line of the LCD

display. Your display may differ.

If your board does not show all of these things, check all connections with the
power supply and the board. For additional assistance, refer to

Chapter 4. “Troubleshooting”.

2.5 ESTABLISHING COMMUNICATIONS

Your PICDEM.net 2 Development Board has already been programmed with the
Demo Application using the Microchip TCP/IP Stack. The on-board external data
EEPROM is also preprogrammed with the demo web site. Once it is hooked up, it is
ready to go – no further software programming is required. At this point, all that
remains is to connect to the board.

If you are trying to contact the demo web site across the network, you can do it the
same way you would browse for any site with a hard IP address: enter
http://x.x.x.x in the browser’s address bar, where “x.x.x.x” is the IP address
of the board (check the board’s LCD display for the address).

Note: If the Development Board is connected in a test network setup, and your

internet browser is currently configured to access through a proxy server,
you may need to disable this proxy server in order to access the device.
Refer to your browser’s Help documentation for further information.

 2011 Microchip Technology Inc. DS51623D-page 19

PICDEM.net™ 2 Development Board User’s Guide

FIGURE 2-3: MICROCHIP TCP/IP STACK PAGE

Y ou are now ready to experiment with the PICDEM.net 2 Development Board. For more
information about the TCP/IP Stack or the Demo Application, please refer to the
Microchip TCP/IP Stack Help included with the Microchip Applications Library (see
Section 1.5 “Development Kit Firmware” for more information).

DS51623D-page 20  2011 Microchip Technology Inc.

PICDEM.net™ 2 DEVELOPMENT

BOARD USER’S GUIDE

Chapter 3. Reconfiguring and Restoring the

PICDEM.net 2 Development Board

3.1 HIGHLIGHTS

This chapter covers the following:

• Reconfiguring the PICDEM.net 2 Development Board Hardware

• Reprogramming an d Rest o ring th e Ap pl ica ti on Fir mwa r e

3.2 RECONFIGURING THE PICDEM.net 2 DEVELOPMENT BOARD HA RDWARE

The PICDEM.net 2 Development Board is provided with a range of hardware features
for manual interaction, as well as a choice of two Ethernet interfaces. In its original
state, the main port (J1) is active and all interactive options are enabled. To allow the
greatest amount of hardware flexibility in developing new applications, users can
change any or all of these configuration options to suit the needs of their application.

3.2.1 Configuring the Hardware Options

The Development Board can be configured to enable or disable its various hardware
features. A total of 23 jumper locations are provided in various places around the board.
As shipped from the factory, all of the locations are bridged by circuit traces, and all of
the features are enabled (with the exception of JP9, discussed below). To change this,
the user will need to cut the traces, and install pins and block jumpers. Afterwards, the
features can be enabled or disabled easily by installing or removing the jumpers.

In some instances, a single function (such as the USART) is connected to the rest of
the board through more than one jumper. This allows selective tailoring of the
controller’s I/O ports to any application that the user may develop. Specific cases are
discussed in the following sections.

The functions of the jumpers are listed in Table 3-1; their locations are shown in
Figure 3-1.

 2011 Microchip Technology Inc. DS51623D-page 21

PICDEM.net™ 2 Development Board User’s Guide

4

18 19

1 2

3 5

6

15

8

9

10

16

17

13

12

14

11

7

22

20 21

PICDEM.ne t™ 2

Development

Board

PICtail™
Daughter

Board

TABLE 3-1: JUMPER DESCRIPTIONS

Number

1 JP1 Bridge U1 (temperature sensor) to RA3
2 JP2 Bridge J2 Power (ENC28J60 Ethernet jack)
3 JP3 Bridge J1 Power (PIC18F97J60 Ethernet jack)
4 JP4 Bridge LED Bank (D1 through D8)
5 JP5 2-Way Select ENC28J60 Reset Control (RD2) or Device Disable
6 JP6 Bridge J1 Ethernet Activity LED Enable (LEDA)
7 JP7 Bridge RA0/LEDA to PICtail™ Daughter Board Header
8 JP8 Bridge J1 Ethernet Link LED Enable (LEDB)
9 JP9 Bridge ENC28J60 INT

10 JP10 Bridge RA1/LEDB to PICtail Daughter Board Header (LEDB)
11 JP11 Bridge ENC28J60 Power
12 JP12 Bridge U4 (EEPROM) SPI Chip Select to RD7
13 JP13 Bridge USART Transmit (microcontroller perspective)
14 JP14 Bridge USART Receive (microcontroller perspective)
15 JP15 Bridge PIC18F97J60 Power
16 JP16 Bridge R38 (potentiometer) to RA2
17 JP17, JP22 Bridge Y3 (Timer1 oscillator)
18 JP18 Bridge S2 (RB0 user-defined push button)
19 JP19 Bridge S3 (RB1 user-defined push button)
20 JP20 Bridge S4 (RB2 user-defined push button)
21 JP21 Bridge S5 (RB3 user-defined push button)
22 JP23 Bridge ENC28J60 SPI Chip Select to RD3

Board

ID(s)

Type Description

to RB0 (normally open)

FIGURE 3-1: JUMPER LOCATIONS ON THE DEVELOPMENT BOARD

DS51623D-page 22  2011 Microchip Technology Inc.

Reconfiguring and Restoring the PICDEM.net 2 Development Board

3.2.1.1 USER-DEFINED CONTROLS AND THE LED BANK The potentiometer and the user-defined push buttons are each connected to the

PIC18F97J60 through their own individual jumpers. They may be selectively disabled
to allow individual ports to become available for general I/O purposes.

The LED bank (D1 through D8) is enabled as a group with one jumper (JP4).

3.2.1.2 TIMER1 OSCILLATOR (Y3) By default, ports, RC0 and RC1, are configured for use by the Timer1 oscillator. An

appropriate oscillator circuit, including Y3, C45 and C46, is connected across these
pins. Removing jumpers, JP17 and/or JP22, disconnects the circuit and makes one or
both pins available as I/O ports.

3.2.1.3 ETHERNET LED
As shipped, the PICDEM.net 2 Development Board uses pins, RA0 and RA1, of the

microcontroller to drive the Ethernet LEDs in J1, generically known as LEDA (the
Activity LED) and LEDB (the Link LED). These signals are also present on RA0 and
RA1 of the PICtail Daughter Board header. Jumpers, JP6, JP7, JP8 and JP10, are used
to connect or disconnect the microcontroller from either the LEDs or the header, or from
both. This is useful in situations when RA0 and RA1 are being used as general I/O pins
and are not needed for network indication.

3.2.1.4 ENC28J60 OPERATION The Reset state of the ENC28J60 controller is determined by jumper, JP5. There are

three possible configurations:

• RD4 (1-2 bridged): The RESET

allows the microcontroller to execute hardware Resets of the ENC28J60 and use
it as an external Ethernet transceiver.

• Disabled (2-3 bridged): The RESET

in permanent Reset and effectively disabling it.

• Open (no jumper): The RESET

but still allowing software device Resets from the SPI bus. This setting also allows
the PIC18F97J60 to use the ENC28J60 as an Ethernet transceiver.

By default, JP5 is configured as “Open” (no jumper).

s

pin is tied to RD4 of the PIC18F97J60. This

pin is tied to ground, holding the ENC28J60

pin is disconnected, preventing hardware Resets

3.2.2 Using the ENC28J60 as the Ethernet Interface

As shipped, the Development Board uses the Ethernet interface module on the
PIC18F97J60 controller for network connectivity. In this state, J1 is the only active
Ethernet port; J2 is not functional.

It is possible to configure the board to bypass the microcontroller’s on-chip Ethernet
module and use the ENC28J60 interface for connectivity. All of the necessary circuit
connections on the board have already been made. The main factor preventing the
ENC28J60 from being used is that the preprogrammed Microchip TCP/IP Demo
Application has been designed to use the microcontroller’s on-chip Ethernet module.

To use the ENC28J60, the TCP/IP Stack must first be installed so that the source code
may be edited. Once the stack has been installed, consult the TCP/IP Stack Help file
for additional information about reprogramming your board to use the ENC28J60.

 2011 Microchip Technology Inc. DS51623D-page 23

PICDEM.net™ 2 Development Board User’s Guide

3.3 REPROGRAMMING AND RESTORING THE APPLICATION FIRMWARE

After investigating the PICDEM.net 2 Development Board and the Demo Application,
you may be ready to modify the application, or perhaps design your own. To do this, it
will be necessary to clear the existing firmware in the Flash program memory of the
PIC18F97J60 microcontroller.

The Development Board is preprogrammed with an Ethernet bootloader. For more
information on using this bootloader, please refer to the Microchip TCP/IP Stack Help
file. Besides this bootloader, the Development Board does not include tools for clearing
and reprogramming the entire microcontroller. You must use an appropriate device
programmer or a development tool, such as the MPLAB ICD 3 with MPLAB IDE, which
provides a complete set of tools for programming and debugging. To ensure proper
programming support of the PIC18F97J60, it is recommended to use the latest version
of the MPLAB IDE; newer versions of the TCPIP Stack generally require the latest
version.

If you have the appropriate development tools (device programmer, development
environment, etc.), you already have everything you need to begin immediately.

To restore the Demo Application, follow the instructions for compiling, programming and
running demonstration projects in the “Getting Started” section of the TCP/IP Stack Help
file. Follow the standard procedure for your device programmer when programming the
microcontroller. Make sure that the following configuration options are set:

• Oscillator: OSC1/OSC2 as Primary, HS+PLL Oscillator

• Watchdog Timer: Disabled

After programming the controller, you may also wish to reprogram the EEPROM with
the Demo Application web pages. Refer to the Microchip TCP/IP Stack Help file for
instructions.

DS51623D-page 24  2011 Microchip Technology Inc.

Chapter 4. Troubleshooting

4.1 HIGHLIGHTS

This chapter will cover the following operational issues and how to resolve them:

• Common Issues

4.2 COMMON ISSUES

1. User LED D8 does not light or flash when power is applied to the board.

Check the PICDEM.net 2 Development Board for power:

• Verify that the power supply is plugged in and the wall outlet has power.

• Check that voltage is available (9 V

• Check that the regulated voltages (3.3 V
connectors at the prototype area of the board.

Make sure that the microcontroller is programmed correctly. This includes verify­ing that the device configuration specified by the Flash Configuration Words is
appropriate for the application .

If a programming device is connected via the ICSP™ interface (J4), verify that
the programmer is not holding the device in Reset.

PICDEM.net™ 2 DEVELOPMENT

BOARD USER’S GUIDE

DC) at the barrel plug.

DC and 5 VDC) are available at the

2. The Link LED on the active Ethernet ICM is not lit or only lights
intermittently.

Check the board for power (see Issue 1, above).
Make sure that the microcontroller is programmed correctly.
Verify that the Ethernet cable is connected to the proper ICM for the firmware

being used.
Verify the connection between the board and the network or local host.
Verify that the correct Ethernet cable is being used:

• When the Development Board is directly connected to the host system, a

crossover cable must be used.

• When the Development Board is connected to the host system through a

network device (such as a hub or switch), a “straight-through” cable must be
used.

Note: If you suspect that one of the Ethernet cables supplied with the kit is

damaged, be certain to replace it with the same type of cable (either
straight-through or crossover). An Ethernet straight-through cable may not
work if the Development Board is directly connected to a host system.

3. The LCD doesn’t display a message when power is applied to the
PICDEM.net 2 Developme nt Board.

Check the board for power (see Issue 1, above).
If the board functions normally otherwise (including connectivity to the host

system), the LCD display itself may be faulty. Contact Customer Service for
additional assistance.

 2011 Microchip Technology Inc. DS51623D-page 25

PICDEM.net™ 2 Development Board User’s Guide

4. The PICDEM.net 2 Development Board will not communicate with the host
system.

Verify that the correct Ethernet cable is being used (see Item 2, above).
Verify that the Ethernet cable is connected and undamaged.
Verify that the IP address as displayed on the LCD is used to communicate.
If the board fails when connected through a network device, verify that the device

is working properly. If it is, try connecting the host system directly to the Ethernet
board, as described in Chapter 2. “Getting Started with the PICDEM.net 2
Development Board”. Also, check that the proper cable is being used (see
above).

Check TCP/IP connectivity with the ping command:

1. Launch a DOS (or Command Prompt) window.

2. Type ping x.x.x.x, where “x.x.x.x” is that of the Development Board.
If ping returns the message “Request timed out”, check the Activity LED on the

active Ethernet ICM:

• If the LED blinks during attempted communications, the IP addressing may be

wrong (i.e., the board and the host are not in the same subnet).

• If the LED does NOT blink, the Ethernet cable is defective, or the wrong type,

or the host system has not been properly configured for TCP/IP.

Verify the operation of the Ethernet card. In Microsoft
systems, this is done through the System or Network applet in the Control Panel
(the exact applet and method of getting there varies from version to version).
Other operating systems may use different methods. Consult the documentation
for your operating system to get detailed information:

Check the Development Board for power (see Issue 1, above).
If all else fails, reconfigure the Development Board’s network settings using the

default Ethernet ID and IP address. See Section 3.3 “Reprogramming and
Restoring the Application Firmware” for more information.

®

Windows® operating

5. The host system communicates with the board, but the demo web site is
not present or does not function correctly.

If the external serial data EEPROM is blank or absent, any attempt to access the
demo web site will result in the message, “File Not Found”. If this message
appears, reload the web pages to the EEPROM as described in the Microchip
TCP/IP Stack Help.

If the web page display is “broken” (disjointed display, error messages
displayed), use your browser’s “Reload” command to refresh the page. If the
page is still broken, reload the EEPROM as described in the Microchip TCP/IP
Stack Help.

6. The board will not communicate with the host system after changing the IP
address and/or Ethernet ID.

Check the Development Board and host system as in Issue 4, above.
Verify that the host system is set up correctly.
Clear the host system’s ARP cache. For Windows operating systems, open a

Command window, type arp -d * and hit <ENTER>.
If these steps don’t work, restore the Development Board’s default network

configuration to see if communications can be re-established. See
Section 3.3 “Reprogramming and Restoring the Application Firmware” for
more information.

DS51623D-page 26  2011 Microchip Technology Inc.

PICDEM.net™ 2 DEVELOPMENT

U3

PIC18F97J60

kHz

.1 F

.1 F

.1 F

.1 F

.1 F

.1 F

.1 F

1 F.1 F

.1 F

.1 F

22 pF

22 pF

2.26K

BOARD USER’S GUIDE

Appendix A. PICDEM.net 2 Development Board

Schematics, Rev. 6

FIGURE A-1: PICDEM.net 2 DEVELOPMENT BOARD SCHEMATIC, SHE ET 1 OF 5

(PIC18F97J60 MICROCONTROLLER)

 2011 Microchip Technology Inc. DS51623D-page 27

PICDEM.net™ 2 Development Board User’s Guide

.1 F

25 MHz

27 pF

27 pF

FIGURE A-2: PICDEM.net 2 DEVELOPMENT BOARD SCHEMATIC, SHE ET 2 OF 5

(PIC18F97J60 MICROCONTROLLER, ASSOCIATED COMPONENTS)

DS51623D-page 28  2011 Microchip Technology Inc.

PICDEM.net 2 Development Board Schematics, Rev. 6

U2

ENC28J60

.1 F

10 F

.1 F

.1 F

.1 F

25 MHz

27 pF

27 pF

.1 F

.1 F

R50

10K

R51

10K

.1 F

1000 pF 2 kV

J2

08B0-1X1T-36-F

J1

08B0-1X1T-36-F

(See Inset)

Polarity Switch

Polarity Switch

FIGURE A-3: PICDEM.net 2 DE VELOPMENT BOARD SCHEMATIC, SHEET 3 OF 5

(ENC28J60 INTERFACE AND ETHERNET MAGNETICS)

 2011 Microchip Technology Inc. DS51623D-page 29

U5

MAX3232

U1
TC1047

U4

25LC256

Q1 LM2940S-5.0

Q2 TC1262-3.3VEB

TP4

TP3
TP5

Temperature Sensor

LCD1

LCD2

Alternate LCD Configurations

J7

.1 F

.1 F

.1 F

.1 F

.1 F

.1 F

47 F

.1 F

47 F

.1 F

.1 F

220 F

.1 F

.1 F

PICDEM.net™ 2 Development Board User’s Guide

FIGURE A-4: PICDEM.net 2 DEVELOPMENT BOARD SCHEMATIC, SHEET 4 OF 5 (RS-232,

EEPROM, TEMPERATURE SENSOR, LCD OPTIONS AND POWER SUPPLY)

DS51623D-page 30  2011 Microchip Technology Inc.

PICDEM.net 2 Development Board Schematics, Rev. 6

PICtail™

J5

Daughter

J6

J4

ICD Connector

LCD Character

J3

Display Port

Board

4.7 F

4.7 F

4.7 F

4.7 F

1 F

1 F

1 F

1 F

1 F

.1 F

FIGURE A-5: PICDEM.net 2 DEVELOPMENT BOARD SCHEMATIC, SHEET 5 OF 5 (ICD,

ICSP™, LCD DISPLAY, MICROCONTROLLER HEADER AND PICtail™
DAUGHTER BOARD CONNECTORS)

 2011 Microchip Technology Inc. DS51623D-page 31

PICDEM.net™ 2 Development Board User’s Guide

NOTES:

DS51623D-page 32  2011 Microchip Technology Inc.

PICDEM.net™ 2 DEVELOPMENT

BOARD USER’S GUIDE

Index

C

Configuring the PICDEM.net 2

Development Board.............................................. 19

Connecting the PICDEM. net 2

Development Board.............................................. 16

Confirming Operation........................................ 19

Connecting to a Network ..................................17

Connecting Directly to a Host System..............18

Customer Support......................................................8

D

Demo Web Site....................................... ...... ..... ......26

Development Kit Contents .......................................11

Development Kit Firmware....................................... 14

Documentation

Conventions........................................................6

Layout................................................................. 5

Dynamic Host Configuration Protocol (DHCP).........15

E

ENC28J60

Operation.......................................................... 23

Use as the Ethernet Interface........................... 23

Establishing Communicati ons..................................19

Ethernet

ID Stickers (Serial Numbers) ............................14

Ethernet Controller

ENC28J60 ........................................................12

Ethernet Crossover Cable.............................17

Ethernet Integrated Connector Module (ICM).......... 13

, 18, 25

I

Internet Address.........................................................8

L

LCD

Display..............................................................12

Optional External Connector............................. 13

LCD Display....................................................... .19

LEDs

Power-on .......................................................... 13

User-Defined..................................................... 13

Local Host System................................................... 16

, 25

M

MAC Address...........................................................14

Memory

External EEPROM............................................26

External EEPROM (25LC256).......................... 12

MCU Program................................................... 24

Microchip Internet Web Site.......................................8

Microchip TCP/IP Stack...........................................19

Microcontroller

PIC18F97J60....................................................12

Modular Connector...................................................13

N

Networking Precautions...........................................15

O

On-Board Power ........................................... ..... ......13

P

PICtail Daughter Board............................................13

Potentiometers

User-Defined.....................................................13

Prototype Area.........................................................13

Push Buttons

Reset.................................................................13

User-Defined.....................................................13

R

Recommended Reading............................... .............7

“ENC28J60 Data Sheet”.....................................7

“PIC18F97J60 Family Data Sheet”.....................7

Reconfiguring PICDEM.net 2 Development Board

Hardware ..........................................................21

Ethernet LEDs ...........................................23

Timer1 Oscillator (Y3)................................23

User-Defi ned Controls and the

LED Bank................... ...... ..... ......23

Reprogramming and Restoring the Firmware.......... 24

Revision History.........................................................9

S

Schematics

PICDEM.net 2 Development Board............27

Serial Port ................................................................13

–31

T

Temperature Sensor

TC1047.............................................................13

Troubleshooting

Changing IP Address and/or Ethernet ID..........26

Communications...............................................26

Demo Web Site................................ .................26

LCD Display................................................ ......25

LED D8 .................................................. ..... ......25

Link LED ...........................................................25

W

Warranty Registration............................. ...... .............7

WWW Address...........................................................8

 2011 Microchip Technology Inc. DS51623D-page 33

Worldwide Sales and Service

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Tel: [phone]
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02/18/11

DS51623D-page 34  2011 Microchip Technology Inc.