© 2008 Microchip Technology Inc. DS51675B
LIN Serial Analyzer
User’s Guide Rev2.0
DS51675B-page ii © 2008 Microchip Technology Inc.
Information contained in this publication regarding device
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and may be superseded by updates. It is y our respons ibility to
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The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, KEELOQ logo, microID, MPLAB, PI C,
PICmicro, PICST ART, PRO MATE, rfPIC and SmartShunt are
registered trademarks of Microchip Technology Incorporated
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Embedded Control Solutions Company are registered
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U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, ECAN,
ECONOMONITOR, FanSense, FlexROM, fuzzyLAB,
In-Circuit Serial Programming, ICSP, ICEPIC, Mindi, MiWi,
MPASM, MPLAB Certified logo, MPLIB, MPLINK, PICkit,
PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal,
PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select
Mode, Smart Serial, SmartTel, Total Endurance, UNI/O,
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SQTP is a service mark of Microchip Technology Incorporated
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All other trademarks mentioned herein are property of their
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© 2008, Microchip Technology Inc orporated, Pr inted in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
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 violat ion of the Digital Millennium Copyri ght 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.
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® MCUs and dsPIC® DSCs, KEELOQ® code hopp ing
devices, Serial EEPROMs, micro peripherals, nonvolat ile memory and
analog products. In addition, Microchip’ s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
© 2008 Microchip Technology Inc. DS51675B-page iii
LIN SERIAL ANALYZER
USER’S GUIDE REV2.0
Preface ...........................................................................................................................1
Chapter 1. LIN Serial Analyzer Overview.....................................................................5
1.1 Introduction .....................................................................................................5
1.2 Hi g h lig h t s .... ........................................................................................... ......... 5
1.3 LI N S er ia l A n a lyzer Cont e n ts .... ............................................ ... .. ......... .. .. ....... 5
1.4 LIN Serial Analyzer Development Tool ..........................................................5
1.5 LI N S er ia l A n a ly z e r H a rd w a re ........ ................................................................ 6
1.6 LI N S er ia l A n a ly z e r S of tw a re .. .. ............................................ ... .. .................... 8
Chapter 2. Getting Started – Quick Setup....................................................................9
2.1 Hi g h lig h t s .... ........................................................................................... ......... 9
2.2 Using the LIN S e ria l Analyze r fo r the F irs t Tim e ........ ... ................................. 9
2.3 Sof tware Inst a lla tion .......................................................................................9
2.4 R u nn i n g L IN S e rial Analyzer Prog ram .......... .. .................................... .. ......... 9
Chapter 3. LIN Serial Analyzer PC Program ..............................................................11
3.1 Hi g h lig h t s .... ........................................................................................... ....... 11
3.2 In te r fa c e Ov e r view ............................. ..........................................................11
3.3 Transaction Window .....................................................................................12
3.4 File Functions ...............................................................................................14
3.5 Setup Functions ...........................................................................................16
3.6 Tools Functions ............................................................................................18
3.7 Start/Stop Logging Button ............ ............................... ......... ........................19
3.8 Master Message Group Box .........................................................................19
3.9 Sta tu s Bar .....................................................................................................22
Appendix A. LIN Serial Analyzer Technical Information ..........................................23
A.1 Hig h l i gh t s .............................................................................................. ....... 23
A.2 LIN S e ria l Analyze r S c he matic ....................................... .. .. ......................... 23
Index .............................................................................................................................25
Worldwide Sales and Service ....................................................................................27
Table of Contents
LIN Serial Analyzer User’s Guide Re v2.0
DS51675B-page iv © 2008 Microchip Technology Inc.
NOTES:
© 2008 Microchip Technology Inc. DS51675B-page 1
LIN SERIAL ANALYZER
USER’S GUIDE REV2.0
Preface
INTRODUCTION
This chapter contains general information that will be useful to know before using the
LIN Serial Analyser. Items discussed in this chapter include:
• Document Lay out
• Conventions Used in this Guide
• Recommended Reading
• The Microchip Web Site
• Customer Support
• Document Rev isio n History
DOCUMENT LAYOUT
This document describes how to use the LIN Serial Analyser. The manual layout is as
follows:
•Chapter 1. “LIN Serial Analyser Overview” – What the LIN Serial Analyser is,
what makes it a desirable development tool and what features are available.
•Chapter 2. “Gettin g Started – Quick Setup” – Descr ibes the supplies needed to
set up and begin to use the LIN Serial Analyser.
•Chapter 3. “LIN Serial Analyser PC Program” – Describes the primary
elements of the interface.
•Appendix A. “LIN Serial Analyzer Technical Information” – Provides the
detailed schematic of the LIN Serial Analyser.
NOTICE TO CUSTOMERS
All documentation becomes dated, and this manual is no exception. Microchip tools and
documentation are consta nt ly 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 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® IDE on-line help.
Select the Help menu, and then Topics to open a list of available on-line help files.
LIN Serial Analyzer User’s Guide Re v2.0
DS51675B-page 2 © 2008 Microchip Technology Inc.
CONVENTIONS USED IN THIS GUIDE
This manu al us es the followi ng docum entatio n conv en tion s:
DOCUMENTATION CONVENTIONS
Description Represents Examples
Arial font:
Italic characters Referenced books MPLAB® IDE User’s Guide
Emphasized text ...is the only co mp ile r...
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 “Save project before build”
Underlined, italic text with
right angle bracket A menu path File>Save
Bold characters A dialog button Click OK
A tab Click the Power tab
N‘Rnnnn A number in verilo g forma t,
where N is the tota l number of
digit s, R is th e radi x and n is a
digit.
4‘b0010, 2‘hF1
Text in angl e brackets < > A key on the keyboard Press <Enter>, <F1>
Courier New font:
Plain Courier New Sample source code #define START
File names autoexec.bat
File paths c:\mcc18\h
Keywords _asm, _endasm, static
Command-line options -Opa+, -Opa-
Bit values 0, 1
Constants 0xFF, ‘A’
Italic Courier New A variable argument file.o, where file can be
any vali d file name
Square brackets [ ] Optional arguments mcc18 [options] file
[options]
Curly brackets and pipe
character: { | } Choice of mutually exclusive
arguments; an OR selection errorlevel {0|1}
Ellipses... Replace s repeated text var_name [,
var_name...]
Represents code supplied by
user void main (void)
{ ...
}
Preface
© 2008 Microchip Technology Inc. DS51675B-page 3
RECOMMENDED READING
This us er’s guide describes how to use LIN Serial Analyser. Other useful documents
are listed below . The following Microchip document s are available and recommended
as supplemental reference resources.
It is recommended that you become familiar with the documents listed below before
using the LIN Serial Analyser.
PICkit™ Serial Analyzer User’s Guide (DS51647)
LIN Specification Package 2.1
© LIN Consortium, 2006. http://www.lin-subbus.org.
LIN Network for Vehicle Applications – Surface Vehicle Recommended Practice
(J2602/1)
© SAE 2006. http://www.sae.org.
THE MICROCHIP 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.
Access ible 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 li sting
•Business of Microchip – Product selector and ordering guides, latest Microchip
press releases, listing of seminars and even ts, list ings 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 cont act their distributor , represent ative or field application engineer
(FAE) for support. Local sales of fices 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.
DOCUMENT REVISION HISTORY
Revision A (June 2007)
• Initial release of this document.
Revision B (June 2008)
• Release describes new features of Revision 2.0 software.
LIN Serial Analyzer User’s Guide Re v2.0
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NOTES:
LIN SERIAL ANALYZER
USER’S GUIDE REV2.0
© 2008 Microchip Technology Inc. DS51675B-page 5
Chapter 1. LIN Serial Analyser Overview
1.1 INTRODUCTION
The LIN Serial Analyser development system enables a Personal Computer (PC) to
communicate with a LIN (Local Interface Network) bus. The PC program uses a graph-
ical user interface to enter and display message frames occurring on the target bus.
The LIN Serial Analyser connects to the system network using a three-position terminal
block.
Chapter 2. “Getti ng Started” will guide you through installing the PC program, the
Windows® operating system drivers and setting up the hardware.
1.2 HIGHLIGHTS
This chapter discusses:
• LIN Serial Ana lys er Contents
• LIN Serial Ana lys er Devel opm ent To ol
• LIN Seri al Ana ly se r Har dwa re
• LIN Serial Analyser Software
1.3 LIN SERIAL ANALYSER CONTENTS
The LIN Serial Analyser kit contains the following items:
• LIN Serial Ana ly s er
• Mini-B USB Cable
• LIN Serial Analyser CD-ROM
1.4 LIN SERIAL ANALYSER DEVELOPMENT TOOL
The LIN Serial Analyser consists of several components, that together , make a network
debug and analysis tool. The user interface program runs on Microsoft® Windows®
operating system compatible computers with a USB port.
The LIN Serial Analyser connect s to the PC using a mini-B USB cable. The LIN Serial
Analyser interfaces to the target network using a three-position, screw-type terminal
block. Figure 1-1 illustrates the LIN Serial Analyser tool connected to a network.
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FIGURE 1-1: LIN SERIAL ANALYSER DEVELOPMENT TOOL
1.5 LIN SERIAL ANALYSER HARDWARE
The LIN Serial Analyser connects to a Microsoft® Windows® operating system
compatible computer using a USB port. It interfaces to the target network using a
three-position, screw-type terminal block.
FIGURE 1-2: LIN SERIAL ANALYSER
1.5.1 Status LEDs
The Status LEDs indicate the status of the LIN Serial Analyser. An illuminated LED
means:
• USB (green) – Power has been applied to the LIN Serial Analyser by the USB
port.
• Busy (yel low) – The LIN Serial Analyser is communicating with the LIN network.
• LIN (blue) – The LIN Serial Analyser is connected to the target bus.
Board Unde r Test
LIN Tool PC
Optional
Power
Supply
Status LEDs
USB Port
LIN Serial Analyser Overview
© 2008 Microchip Technology Inc. DS51675B-page 7
1.5.2 USB Port Connection
The USB port connection is a USB mini-B connector . Connect the LIN Serial Analyser
to the PC using the cable supplied with the device.
FIGURE 1-3: LIN SERIAL ANALYSER NETWORK AND POWER
1.5.3 Network Communicati on Connector
The communication connector connects to the target device using a three-position,
screw clamp terminal block. The pin as signments, labeled on the top of the device, are:
• VBAT – Positive battery connection for voltage supplied by the vehicle
• LIN – Bidirectional data I/O
• GND – Common chassis, power and serial ground
1.5.4 Power Jack
The device uses a st andard, 6.5 x 2.5 DC power pl ug. The center pin is positi ve. Power
can be supplied either through the power plug or the network connector as the two are
internally connected.
1.6 LIN SERIAL ANALYSER SOFTWARE
1.6.1 User Interface Program
The LIN Serial Analyser PC program displays all of the board’ s bus activity via the
software’s Transaction window, displayed on the connected PC. This is useful for
“sniffing” the bus and tracking message frames.
Chapter 3. “LIN Serial Analyser PC Program” explains the installation and operation
of the program.
1.6.2 Firmware
The LIN Serial Analyser firmware is explained in Chapter 9. “PICkit™ Serial Analyzer
Firmware” of the “PICkit™ Serial Analyzer User’s Guide” (DS51647).
Network
Connection
Terminal
Block
Screws
Auxiliary
Power
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1.6.3 Dynamically Linked Library (DLL)
The LIN Serial Analyser DLL is explained in Chapter 10. “PICkit™ Serial Analyzer
DLL” of the “PICkit™ Serial Analyzer User’s Guide” (DS51647).
© 2008 Microchip Technology Inc. DS51675B-page 9
LIN SERIAL ANALYZER
USER’S GUIDE REV2.0
Chapter 2. Getting Started – Quick Setup
2.1 HIGHLIGHTS
This chapter discusses:
• Using the LIN Serial Analyzer for the First Time
• Software Installation
• Running LIN Serial Analyser Program
2.2 USING THE LIN SERIAL ANALYZER FOR THE FIRST TIME
The LIN Serial Analyser is shipped preprogrammed and ready for use. The user needs
to supply:
• A wiring harness with appropriate connections to its system network
• A power supply (nominal 13.8V)
Before making any connections, the software must be installed on the host system. The
user must have administrator level rights to inst all some of the required programs. For
more information, see Section 2 .3 “Software Installat ion”.
Power is supplied either through the r ound, power plug or the terminal block. The
positive and negative terminals and power plug are common. Supplied power must be
in the range of 8.0V to 30.0V with a nominal value of 12.0-14.4V. Less than 5.0 mA of
current is required to power the LIN transceiver section of the unit.
Internal jumper , E1, configures the unit as either a master or slave node. A 1.0 kΩ bus
pull-up resistor is enabled when E1 is connected across A and B. With the jumper
removed, an internal 30 kΩ resistor is retained.
The unit is configured as a master node as shipped.
2.3 SOFTWARE INSTALLATION
All necessary files are contained on the Compact Disc (CD) supplied with the device.
2.3.1 Installing the LIN Serial Analyser Program
1. Run setup.exe from the CD.
2. Select Install when prompted and follow any instructions.
The PC host program is uninstalled with the control panel’s add/remove utility.
2.4 RUNNING LIN SERIAL ANALYSER PROGRAM
Before starting the LIN Serial Analyser software:
• The analyzer must be connected to the PC by a USB cable
• The analyzer must be powered up
The analyzer’s green USB and blue LIN lights will be on when these conditions are
met.
Note: The LIN Serial Analyser program requires the Microsoft® .NET Framework
version 2.0.
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There is a hard-wired, loopback bus path, so connection to a network is not needed for
testing the installation.
To start the software:
1. On the Windows operating system taskbar, click Start.
2. Click All Programs>Microchip Technology Inc.>LIN Serial Analyser.
3. Click Setup>COM port.
4. From the pull-down menu, select the USB port to be used.
5. In the menu’s text box, type the appropriate baud rate value.
6. Click OK.
7. Verify operation by selecting one of the preset messages from the Master
Message area.
Bus ac tivity is indicated by the analyzer’s yellow BUSY light flickering.
A message will be displayed in the Bus Transaction window with:
•A time-stamp
• The correct ID parity bits
• The calculated checksum
• Any detected error conditions
Note: Only available, plugged in USB ports are displayed by the pull-down menu.
If the correct serial port is not displayed, verify that the USB hardware is
corre ctl y ins talled.
© 2008 Microchip Technology Inc. DS51675B-page 11
LIN SERIAL ANALYZER
USER’S GUIDE REV2.0
Chapter 3. LIN Serial Analyser PC Program
3.1 HIGHLIGHTS
This chapter discusses:
• Interface Overview
• Transaction Window
• File Functions
• Setup Func tio ns
• Tools Functions
• Start/Stop Logging Button
• Master Messa ge Grou p Box
•Status Bar
3.2 INTERFACE OVERVIEW
When the LIN Serial Analyser’ s software program starts, the window , shown in Figure ,
appears. The commands are accessed through the pull-down menus at the top of the
interface.LIN Serial Analyzer User Interface
Pull-Down
Menus
Start/Stop
Logging
Button
Transaction
Window
Master
Message
Group Box
Status Bar
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DS51675B-page 12 © 2008 Microchip Technology Inc.
3.3 TRANSACTION WINDOW
This window, shown in Figure 3-1, constantly monitors and display bus traffic when in
the “Display All” mode. Any message frames seen on the bus are shown, regardless of
the source.
The data is displayed as it is seen on the bus without modification.
This section describes the window’s fields.
FIGURE 3-1: MESSAGE FRAMES DISPLAY
3.3.1 TimeStamp
This field of the T ransaction window displays the time, in seconds, since the last frame
was received. The value is reset to zero when the window is cleared.
The value can also be cleared by clicking on the “TimeStamp” column label.
3.3.2 ID (Identifier)
This field displays the ID byte, including the upper two parity bits.
3.3.3 Data
From zero to eight data bytes are displayed in this field. The data is in the hexadecimal
format (without the leading characters, ‘0x’), with the bytes separated by spaces.
3.3.4 Checksum
The last field of a frame is the checksum. The checksum contains the inverted, eight-bit
sum with carry, over all data bytes or all data bytes and the protected identifier.
3.3.5 ChkSumType
This field indicates whether a “classic” or “enhanced” equation was used for the check-
sum calculation. For messages sent via the Master Message group box, the type of
calculation is configured in the checksum portion of the Master Message group box
(see Section 3.8.3 “Checksum Group”).
• Classic – Checksum calculation over the data bytes only. Used for the master
request frame, slave response frame and communications with LIN 1.x slaves.
An eight-bit sum with carry is equivalent to the sum of all values and subtract s
255 every time the sum is greater than or equal to 256.
• Enhanced – Checksum calculation over the dat a bytes and the protected identifier
byte. Used for communication with LIN 2.x slaves.
The checksum is calculated both ways when a message frame is received. A match is
displayed either as “Classic” or “Enhanced”. If neither result matches the incoming
data, “ERROR” is displayed.
3.3.6 Baud
This field shows the actual, calculated bit rate observed during the Auto-Baud Detect
period of the current frame.
LIN Serial Analyser PC Program
© 2008 Microchip Technology Inc. DS51675B-page 13
3.3.7 Errors
This fiel d displays any of the error types described in this section. If multiple errors are
detected, onl y one is disp lay ed .
3.3.7.1 PARITY
The parity is calculated on the frame identifier bits as shown in Equation 3-1.
EQUATION 3-1: PARITY CALCULATIONS†
3.3.7.2 TX BIT
A slave or master node that is transmitting a bit on the bus also monitors the bus. A TX
bit error is when the bit or byte value that is received is different from the bit or byte
value that is transmitted.
3.3.7.3 CHECKSUM
A checksum error is when the inverted modulo-256 sum over all received data bytes
and the protected identifier (when using enhanced checksum) and the received
checksum byte field does not result in $FF.
3.3.7.4 FRAMING
A byte field framing error is when the ninth bit after a valid Start bit is dominant. This
check does not apply to the Break character.
3.3.7.5 NO ANSWER
This value displays when a new Break/Sync/ID header was detected, but no data was
received within the bus time-out period.
3.3.7.6 BREAK
This di splays when data characters were received before a valid Sync Break header
was detected.
3.3.7.7 BUS TIME-OUT
This value indicates that the time interval allocated for an eight-byte message expired.
This time is set to approximately 140% of a single bit time.
The time-out may also be configured to a fixed value not dependent on baud rate.
3.3.7.8 SWBREAK
This value displays when a valid Sync Break is not detected by the UART. A Break was
“assumed” because the first byte received was 0x00, but without a framing error.
P0 = ID0 ℘? ID1 ℘? ID2 ℘?
P1 = - (ID1 ℘? ID3 ℘? ID4 ℘? I
† P0 is bit 6 and P1 is bit 7 of the ID byte.
Note: This function is not currently implemented.
Note: This function is not currently implemented.
Note: This function is not currently implemented.
Note: This function is not currently implemented.
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3.4 FILE FUNCTIONS
3.4.1 Open
The “Open” dialog box loads configuration and master message frames from a
user-selected file into the “Master Frames” field, so that they can be sent (see
Section 3.8.1 “Master Frames Field”).
By default, the dialog box, shown in Figure 3-2, displays the file that was last used in
the previous session.
To display the dialog box, go to the pull-down menus at the top of the user interface and
select File>Open.
FIGURE 3-2: FILE OPEN WINDOW
3.4.2 Save
The “Save” dialog box saves configuration and master message frames, displayed
in the “Master Frames” field, to a previously selected *.ini file (see
Section 3.8.1 “Master Frames Field”.) By default, the dialog box populates the
file name that was last used in the previous session.
To display the dialog box, go to the pull-down menus at the top of the user interface and
select File>Save.
LIN Serial Analyser PC Program
© 2008 Microchip Technology Inc. DS51675B-page 15
3.4.3 Save As
The “Save As” dialog box saves or appends configuration and master message
frames, displayed in the “Master Frames” field, to a preselected file (see
Section 3.8.1 “Master Frames Field”). The default file name is the last used file from
the previous session.
To display the dialog box, shown in Figure 3-3, go to the pull-down menus at the top of
the user interface and select File>Save As.
FIGURE 3-3: FILE “Save As” WINDOW
3.4.4 Print, Print Setup, Print Preview
These three functions relate to printing the contents of the Transaction window.
Print Setup configures the printing attributes and Print Preview displays how the print
will appear.
The printing function cl ears the contents of the Transaction window , but does not reset
the time-stamp.
All of these functions are accessible through the File pull-down menu.
3.4.5 Exit
Selecting File>Exit terminates the LIN Serial Analyser software program.
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3.5 SETUP FUNCTIONS
The Tools pull-down menu has the following commands.
3.5.1 Setup COM port
The “Setup COM port” function selects the USB communication port to use.
The menu also sets the baud rate to apply to master transactions.
The “Timeout in mS” text box displays the current time-out value for a message frame
and may be modified by the user. To enable the time-out value to vary with the baud
rate, enter a value of 0.
FIGURE 3-4: “Setup COM port” WINDOW
To display the dialog box, select Setup>COM port.
Note: The “COM port” drop-down list box displays only available, plugged-in USB
ports. If the correct serial port is not displayed in the menu, verify that the
USB hardware is correctly installed.
LIN Serial Analyser PC Program
© 2008 Microchip Technology Inc. DS51675B-page 17
3.5.2 Log File
The Log File setup function specifies the new or existing file that will store bus
transactions.
If an existing file that already contains data is selected, any new messages will be
appended to the end of the file.
FIGURE 3-5: LOG FILE SETUP WINDOW
To display the dialog box, select Setup>Log File.
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3.5.3 Slave Response
The Slave Response setup function specifies message frames that are published to the
bus whenever the correct ID is recognized.
FIGURE 3-6: SLAVE RESPONSE SETUP WINDOW
To display the dialog box, select Se tup> S lave Res pon se .
3.5.4 Slave Response Frames Field
The “Slave Response Frames” field is composed of 0 to n rows of one or more mes-
sages that are sent over the bus in response to a valid ID byte. These messages can
be entered manually, loaded from a previously saved session, or both.
When the response is sent, it is displayed in the Transaction window if it is open and
active.
Messages in the “Slave Response Frames” field can also be saved for reuse (see
Section 3.4.2 “Save” and Section 3.4.3 “Save As”).
3.5.4.1 RESPONSE SYNTAX
Messages must consist of the ID byte without parity bits and the data bytes, all
separated by spaces. All inputs are in hexadecimal radix.
The checksum is not included; it is calculated at send time unless the “forced” Check-
sum option is selected.
Comments or notes may be attached to each frame by prefacing it with a
semi-colon (;). Any text after the semi-colon will be disregarded and not transmitted. All
notes will be saved in the selected .ini file and reloaded when reopened.
LIN Serial Analyser PC Program
© 2008 Microchip Technology Inc. DS51675B-page 19
3.5.4.2 DEVELOPING AND STORING RESPONSE CONTENT
To manually add a sl ave response message content to the “Slave Response Frames”
field:
1. Click the Add button. A second window displays for creation of the new mes-
sage.
2. Type the message in the text box.
3. Click OK.
To load a pre-existing message to the “Slave Response Frames” field:
1. From the pull-down menu s, select File>Open. The “Open” dialog box appears.
2. In the dialog box’s list box, select the desired *.ini file.
3. Click Open.
To delete some slave message content:
1. In the “Slave Response Frames” field, select the content to be deleted by doing
one of the following:
•To s ele ct adj acent ro ws of cont ent – Click on the first row, scroll down to the
last row and hold down <Shift> while clicking.
•To select non-adjacent rows of content – Hold down <Ctrl> while clicking each
row.
2. Click Delete.
To edit some slav e message content:
1. In the “Master Frames” field, select the content line to be edited
1. Click Edit. A second window displays to edit hte message.
2. Make and corrections or additions to the message in the text box.
3. Click OK
To store a slave response message(s) into the buffer:
1. In the “Slave Responser Frames” field, select the content to be stored by doing
one of the following:
•To s ele ct adj acent ro ws of cont ent – Click on the first row, scroll down to the
last row and hold down <Shift> while clicking.
•To select non-adjacent rows of content – Hold down <Ctrl> while clicking each
row.
2. Click Save.
The highlighted message content is stored, working top-to-bottom through the
“Slave Response Frames” field.
The internal buffer status is updated to reflect the amount a bytes used and
remaining. If the amount of buffer space is exceeded, the Save operation is
aborted and a error message displayed. Reduce the number or size of the mes-
sages to be written to the buffer and retry the Save.
WARNING
Importin g a fil e i nto the “Slave Respon se Fram es” fi eld overwrites any c onte n t th at pre-
viously had been in that field.
LIN Serial Analyzer User’s Guide Re v2.0
DS51675B-page 20 © 2008 Microchip Technology Inc.
To save a slave reponse message to a file:
1. See Section 3.4.2 “Save” and Section 3.4.3 “Save As”.
3.5.4.3 SL AV E RES PO N S E FR AME S FIELD ELEMENTS
This section describes the “Slave Response Frames” field’s two elements.
3.5.4.3.1 ID
The “ID” element displays the identifier byte that is compared to identifier bytes
received from the bus. The ID is entered without the upper two parity bits . Parity is cal-
culated and appended when the message frame is stored in the inernal buffer memory .
The acceptable range of values is 00 to 3F hex (0 to 63 decimal).
3.5.4.3.2 DATA
The “Data” portion of the “Slave Response Frames” field displays zero to eight-byte val-
ues, separated by spaces. This are the actual bytes sent over the bus in response to a
recognized ID.
3.5.5 Slave Response Message Controls
3.5.5.1 SAVE BUTTON
Clicking this button stores the selected message content highlighted in the “Slave
Response Frames” field (see the “Save” procedure in Section 3.5.4.2 “Developing
and Storing Response Content”).
3.5.5.2 ADD BUTTON
Click the Add button to add a new message to the “Slave Response” field
3.5.5.3 EDIT BUTTON
Allows the selected message in the “Slave Response Frames” field to be edited.
3.5.5.4 DELETE BUTTON
Clicking the Delete button deletes the content that is highlighted in the “Master Frames”
field. (see the “Delete” procedure in Section 3.5.4.2 “Developing and S toring
Response Content”).
3.5.5.5 CLEAR ALL BUTTON
Clicking this button clears the both the contents of the “Slave Response Frames” win-
dow and the internal buffer memory . The buffer status is updated to show no used bytes
and bytes remaining.
3.5.6 Checksum Group
The checksum value is computed at send time. Selecting one of the
option buttons in the “Checksum” group, shown at right, determines
the type of checksum that will be calculated for all transmitted
master message frames, highlighted in the “Master Frames” field.
•classic – The checksum includes all data bytes.
•enhanced – The checksum includes identifier byte and all data
bytes.
•forced – (Enabled only in Debug mode.) The last byte in the message stri ng is
sent in place of the calculated checksum. This is useful in checking master error
handling.
LIN Serial Analyzer User’s Guide Re v2.0
DS51675B-page 22 © 2008 Microchip Technology Inc.
3.6 TOOLS FUNCTIONS
This sections lists the commands on the Tools pull-down menu.
3.6.1 Debug Mode
Selecting Tools>Debug Mode enables the user to debug bus or slave operational
issues.
One function forces a user-supplied checksum to be appended to a master message
to check a slave for proper error handling. In this mode, the generation of identifier
parity bits is inhibited and the identifier byte is transmitted without modification.
3.6.2 Suppress Bus T ime-out Error
The current implementation of the master task cannot refer to a LIN descriptor file, so
there is no way to determine the length of any received message. To calculate an
appropriate time-out value, multiply the length of an eight-byte frame times 140% of the
bit rate.
This value can be overridden by entering a fixed time-out value in the COM Setup
window, described in Section 3.5.1 “Setup COM port”.
3.6.3 Clear Monitor Window
This function clears the Transaction window and resets the time-stamp.
3.6.4 Filters
This opens a window to display all messages received through the Transaction window
but are sorted by ID number. The window is ‘live’ and shows current bus traffic. New
message frames received will overwrite previous data. This is useful in monitoring con-
stanly changes data.
3.6.5 Transmit
This option selects the Transmit Only mode. No received messages are displayed in
the Transaction window.
3.6.6 Listen (Filter)
This option selects the Listen Only mode. Only non-duplicated messages are displayed
in the Transaction window.
When “sno opi ng” bus mes s age frame s, this pre vents the Transacti on window fro m
becoming cluttered with repeated frames.
3.6.7 Display All (Snoop) Default
This function selects the Display All mode. All messages seen on the bus are
displayed.
This mode is best used with the data logging feature to capture all bus traffic for later
analysis.
LIN Serial Analyser PC Program
© 2008 Microchip Technology Inc. DS51675B-page 23
3.7 S TART/STOP LOGGING BUTTON
This button – located in the top, right corner of the interface – starts, pauses, or stops
the capturing of messages to the log file.
Before starting the logging process, select and open a log file (see Section 3.5.2 “Log
File”).
To pause the logging process, click the button a second time.
3.8 MASTER MESSAGE GROUP BOX
This functions in the group box to act as a master node on the LIN bus, sending the
previously constructed frames to the slaves on the bus.
This window will cause a bus conflict if another master appears on the network. Any
conflict will be shown in an active Transaction window as a bus error.
The group box, shown in Figure 3-7, consists of the:
• “Master Frames” field
• “Checksum” group
• Message controls
FIGURE 3-7: MASTER MESSAGE GROUP BOX
3.8.1 Master Frames Field
The “Master Frames” field is composed of 0 to n rows of one or more messages that
can be sent over the bus for test purposes. These messages can be entered manually,
loaded from a previously saved session, or both.
When the message is sent, it and any response is displayed in the Transaction window
if it is open and active.
Messages in the “Master Frames” field can also be saved for reuse (see
Section 3.4.2 “Save” and Section 3.4.3 “Save As”).
3.8.1.1 MESSAGE SYNTAX
Messages must consist of the ID byte without parity bits and the data bytes, all
separated by spaces. All inputs are in hexadecimal radix.
The checksum is not included; it is calculated at send time.
Comments or notes may be attached to each frame by prefacing it with a
semi-colon (;). Any text after the semi-colon will be disregarded and not transmitted. All
notes will be saved in the selected .ini file and reloaded when reopened.
“Master Fram
e
Field
“Checksu
Group
Message
Controls
LIN Serial Analyzer User’s Guide Re v2.0
DS51675B-page 24 © 2008 Microchip Technology Inc.
3.8.1.2 DEVELOPING AND STORING MESSAGE CONTENT
To manually add message content to the “Master Frames” field:
1. Click the Add button. A second window displays for creation of the new mes-
sage.
2. Type the message in the text box.
3. Click OK.
To load a pre-existing message to the “Master Frames” field:
1. From the pull-down menu s, select File>Open. The “Open” dialog box appears.
2. In the dialog box’s list box, select the desired *.ini file.
3. Click Open.
To delete some message content:
1. In the “Master Frames” field, select the content to be deleted by doing one of the
following:
•To s ele ct adj acent ro ws of cont ent – Click on the first row, scroll down to the
last row and hold down <Shift> while clicking.
•To select non-adjacent rows of content – Hold down <Ctrl> while clicking each
row.
2. Click Delete.
To edit some message content:
1. In the “Master Frames” field, select the content line to be edited
1. Click Edit. A second window displays to edit hte message.
2. Make and corrections or additions to the message in the text box.
3. Click OK
To send a message:
1. In the “Master Frames” field, select the content to be sent by doing one of the
following:
•To s ele ct adj acent ro ws of cont ent – Click on the first row, scroll down to the
last row and hold down <Shift> while clicking.
•To select non-adjacent rows of content – Hold down <Ctrl> while clicking each
row.
2. Click Send.
The highlighted message content is sent, working top-to-bottom through the
“Master Frames” field.
The message is sent once. (For information on c onti nually sending the
highlighted message content, see Section 3.8.3 “Checksum Group”.)
WARNING
Importing a file into the “Master Frames” field overwrites any content that previously
had been in that field.
LIN Serial Analyser PC Program
© 2008 Microchip Technology Inc. DS51675B-page 25
To store a message:
1. See Section 3.4.2 “Save” and Section 3.4.3 “Save As”.
3.8.1.3 MASTER FRAMES FI ELD ELEMENTS
This section describes the “Master Frames” field’s two elements.
3.8.1.3.1 ID
The “ID” element displays the identifier byte to be sent without the upper two parity bits.
Parity is calculated and appended at send time unless the application is in the Debug
mode (see Section 3.6.1 “Debug Mode”).
The acceptable range of values is 00 to 3F hex (0 to 63 decimal).
3.8.1.3.2 DATA
The “Data” portion of the “Master Frames” field displays zero to eight-byte values,
separated by spaces.
3.8.2 Message Controls
3.8.2.1 SEND BUTTON
Clicking this button transmits the message content that is highlighted in the “Master
Frames” field (see the “Send” procedure in Sectio n 3.8.1.2 “Developing and Storing
Message Con tent”).
When the Send button is clicked, the message is sent once (see
Section 3.8.3 “Checksum Group”).
If the Transaction wi ndow is open and active, the message and any response will be
displayed.
3.8.2.2 CONTINUOUS BUTTON
Clicking the Continuous button sends the selected message entry or entries continu-
ously, at an interval defined in the time control text box, described next. A second click
of the button stops the continuous transmissions.
Any number of messages may be selected for continuous broadcast. They will be
transmitted in the order they appear in the “Master Frames” field.
3.8.2.3 TIME CONTROL
Used in conju nction with the Continuous button, this text box sets the interval, in
milliseconds, between message frames being sent in the Continuous mode.
3.8.2.4 ADD BUTTON
Click the Add button to add a new message to the “Master Frames” field
3.8.2.5 EDIT BUTTON
Allows the selected message in the “Master Frames” field to be edited.
Note: Due to service latency time in the Windows operating system environment,
the minimum time interval may be as high as 200 ms, regardless of desired
time set in the control box. Intervals less than 200 ms will be serviced as
fast as possible, but may not be less than the operating sy stem minimum.
LIN Serial Analyzer User’s Guide Re v2.0
DS51675B-page 26 © 2008 Microchip Technology Inc.
3.8.2.6 DELETE BUTTON
Clicking the Delete button deletes the content that is highlighted in the “Master Frames”
field. (see the “Delete” procedure in Section 3.8.1.2 “Developing and Storing Message
Content”).
3.8.3 Checksum Group
The checksum value is computed at send time. Selecting one of the
option buttons in the “Checksum” group, shown at right, determines
the type of checksum that will be calculated for all transmitted
master message frames, highlighted in the “Master Frames” field.
•classic – The checksum includes all data bytes.
•enhanced – The checksum includes identifier byte and all data
bytes.
•forced – (Enabled only in Debug mode.) The last byte in the message stri ng is
sent in place of the calculated checksum. This is useful in checking slave error
handling.
If a slave response is requested (a ID value with no data bytes), the checksum is not
computed and the field is left blank.
The chec ksum returned by the slave will be displayed in the “Checksum” field of the
Transaction window (see Section 3.3.5 “ChkSumType”.)
3.9 STATUS BAR
The status bar at the bottom of the Interface window displays:
• Currently selected baud rate of master messages
• Dynamic LIN network status
© 2008 Microchip Technology Inc. DS51675B-page 27
LIN SERIAL ANALYZER
USER’S GUIDE REV2.0
Appendix A. LIN Serial Analyzer Technical Information
A.1 HIGHLIGHTS
This chapter discusses:
• LIN Serial Ana ly ze r Sche mati c
A.2 LIN SERIAL ANALYZER SCHEMATIC
The LIN Serial Analyzer management hardware diagram is shown in Figure A-1.
LIN Serial Analyzer User’s Guide Re v2.0
DS51675B-page 28 © 2008 Microchip Technology Inc.
FIGURE A-1: LIN SERIAL ANALYZER SCHEMATIC
FAULT/TXE
USB_ATTACH
GND
LBUS
V
BB
V
BAT
V
DD
LIN_ATTACH
CSWAKE
BUSY
TX
RX
V
CC
V
CC
V
CC
V
CC
V
CC
PICkit 2
D5
1N4004
R6 0
LIN
6
RX 1
TX 4
CS/WAKE 2
GND
5
V
BAT
7
V
DD
3
FAULT/TXE 8
U1
MCP2021-500
1
2
3
4
5
6
J2
C7
0.1 MF
R3 1K
C3
1.0 MF
R5
100K
R9 100K
2
3
1
P1
LED2 Yellow LED
C10
0.1 MF
R4470
C1
10 MF
C2
.01 MF
D3
1N4148WX-TP
D1
P6SMB43AT3G
C5
220 pF
V
BUS
1
D-
2
D+
3
nc
4
GND
5
P2
USB Mini-B
LED3 Green LED
D2 1N4004 R14.7KLED1 Blue LED
R104.7K
D4
MMBZ27VCLT1G
1
2
3
J1
C8 22 pF
R2470
R810K
C6 22 pF
Y1
20 MHz
MCLR/V
PP
/RE3
26
OSC1/CLKIN
6
OSC2/CLKOUT/RA6
7
GND
5
GND
16
V
DD
17
RA0/AN0
27
RA1/AN1
28
RA2/AN2/V
REF
-
1
RA3/AN3/V
REF
+
2
RA4/T0CLI/RCV
3
RA5/AN4/LVDIN
4
RB0/INT0/AN12 18
RB1/INT1/AN10 19
RB2/AN8/INT2/VMO 20
RB3/AN9/VPO 21
RB4/AN11/KBI0 22
RB5/KBI1/PGM 23
RB6KBI2/PGC 24
RB7/KBI3/PGD 25
RC0/T1OSO/T13CKI 8
RC1/T1OSI/UOE 9
RC2/CCP1 10
V
USB
11
RC4/D-/VM 12
RC5/D+/VP 13
RC6/TX/CK 14
RC7/RX/DT 15
U2
PIC18F2450-QFN
R7
100K
C4
.01 MF
C9
470 nF
1 2
E1
TM
© 2008 Microchip Technology Inc. DS51675B-page 25
LIN SERIAL ANALYZER
USER’S GUIDE REV2.0
B
Buttons
Start/Stop Logging............................................ 19
C
Clear Monitor Window Function............................... 18
Customer Support...................................................... 3
D
Data Field Element .................................................. 21
Debug Mode Function.............................................. 18
Display All (Snoop) Default Function....................... 18
Documentation
Addition al Read ing...................... ........................ 3
Conventions........................................................ 2
Layout................................................................. 1
E
Exit Functi on..................... ..... ................. ................. 15
F
File Menu
Exit.................................................................... 15
Open................................................................. 14
Print .................................................................. 15
Save.................................................................. 14
Save As ............................................................ 15
H
Hardware
Connecting to PC. ...... ..... ...... ...... ........................ 6
Contents of Kit.................................................... 5
LIN Serial Analyzer Schematic ......................... 24
Network Connector............................................. 7
Overview............................................................. 5
Power Jack......................................................... 7
Status LEDs........................................................ 6
USB Connection ................................................. 7
I
ID Field Element ......... ...... ..... ...... ...... ...................... 20
Installing Software...................................................... 9
Internet Address......................................................... 3
L
LIN Serial Analyzer User Interface........................... 11
Listen (Fil ter) Functio n....................... ..... ...... ........... 18
Log File Function ..................................................... 17
M
Master Frames Field
Data ..................................................................21
Deleting Me ss age Content............... ...... ........... 20
Developing and Storing
Message Content ...............................20
ID ......................................................................20
Loading Pre-Existing Message Content............20
Manually Creating a Message ..........................20
Saving Message Content..................................20
Sending Mes s age s ..................... ..... ...... ........... 20
Master Message Group Box ....................................19
Checksum Group. ...... ..... ...... ............................22
Master Frames Field.........................................19
Master Frames Field Elements.........................20
Message Controls.............................................21
Message Controls
Continuous Button ............................................21
Delete Button....................................................21
Send Button......................................................21
Time Control .....................................................21
Messages
Creating Manually.............................................20
Deleting Me ss age Content............... ...... ........... 20
Developi ng and Storing............... ..... ...... ........... 20
Loading Pre-Existing Content...........................20
Saving Message Content..................................20
Sending.............................................................20
Microchip Internet Web Site.......................................3
O
Open Function..........................................................14
P
Print Function...........................................................15
Print Preview Function.............................................15
Print Setup Function.................................................15
S
Save As Functio n... ..... ...... ..... ..................................15
Save Functi on............. ...... ................. ................ ......14
Setup COM port Function ........................................16
Setup Menu....................... ..... ................. .................16
Log File.............................................................17
Setup COM port......... ..... ..................................16
Index
LIN Serial Analyzer User’s Guide Re v2.0
DS51675B-page 26 © 2008 Microchip Technology Inc.
Software
Dynamically Linked Library (DLL).......................8
File Menu..........................................................14
Firmware.............................................................8
Installation...........................................................9
Interface Window ..............................................11
Master Message Group Box.............................19
Overview............................................................. 8
Prelaunch Tasks.................................................9
Setup Menu.......................................................16
Starting the Software ........................................10
Status Bar.........................................................22
Tools Menu .......................................................18
Transaction Window .........................................12
Start/Stop Logging Button........................................19
Suppress ‘Bus Timeou t’ Error Func tio n..... ..... ...... ....18
T
Tools Menu ..............................................................18
Clear Monitor Window.......................................18
Debug Mode .....................................................18
Display All Default.............................................18
Listen (Fil ter).......... ..... ...... ..... ...........................18
Suppress ‘Bus Tim eou t’ Error................. ...... ....18
Transmit............................................................18
Transaction Window.................................................12
Baud..................................................................12
Checksum.........................................................12
ChkSumType ....................................................12
Data...................................................................12
Errors ................................................................13
Break..........................................................13
Bus Time-out..............................................13
Checksum..................................................13
Framing......................................................13
No Answer ................. ................. ...............13
Parity..........................................................13
SWBreak....................................................13
TX Bit................... ...... ..... ................. ..........13
ID (Identifier) .....................................................12
TimeStamp........................................................12
Transmit Function.....................................................18
W
WWW Address...........................................................3
Index
© 2008 Microchip Technology Inc. DS51675B-page 27
NOTES:
DS51675B-page 32 © 2008 Microchip Technology Inc.
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WORLDWIDE SALES AND SERVICE
06/25/07
