MCC i2cStick User manual

User’s Guide
USB to I2C Bus
Host Adapter
with iPort Utility Pack Software
www.mcc-us.com

Introduction
The MCC i2cStick™ USB to I2C Host Adapter (#MIIC-207) allows any Windows
2000, XP, Vista(x86/x64), or 7(x86/x64) PC, with a free USB port or self-powered
USB hub, to become an I2C Master or Slave device, transmitting or receiving I2C
messages between the PC and one or more I2C devices across an I2C Bus.
What’s New!
• Compact shirt-pocket size for on-the-go developers, application engineers,
field service engineers, and technicians.
• Fixed-speed communications (115.2K baud).
• Master Transmit Packet-Error Checking (PEC) detection.
• Low-cost I2C Bus connector and cabling.
This user’s guide describes the installation and operation of the i2cStick host
adapter, Virtual Communication Port (VCP) driver, the iPort Utility Pack Software
for Windows, and includes the Programmer’s Reference for creating custom
applications.
Are you new to I2C? Want to know more? We suggest you review “What is I2C?” at
www.mcc-us.com/I2CBusTechnicalOverview.pdf.
This MCC product uses NXP (Philips) components and is licensed to use the I²C
Bus.
“Purchase of Philips I²C components conveys a license under the Philips’ I²C
patent to use the components of the I²C system, provided the system conforms to
the I²C specifications defined by Philips.”
I²C is a trademark of NXP (Philips) Corporation.
05-JAN-11

Copyright© 2011 by Micro Computer Control Corporation. All rights are reserved.
No part of this publication may be reproduced by any means without the prior
written permission of Micro Computer Control Corporation, PO Box 275,
Hopewell, New Jersey 08525 USA.
DISCLAIMER: Micro Computer Control Corporation makes no representations or
warranties with respect to the contents hereof and specifically disclaims any implied
warranties of merchantability or fitness for any particular purpose. Further, Micro
Computer Control Corporation reserves the right to revise the product described in
this publication and to make changes from time to time in the content hereof
without the obligation to notify any person of such revisions or changes.
WARNING - Life Support Applications: MCC products are not designed for use
in life support appliances, devices, or systems where the malfunction of the product
can reasonably be expected to result in a personal injury.
WARNING - Radio Frequency Emissions: This equipment has been tested and
found to comply with the limits for a Class A digital device, pursuant to part 15 of
the FCC rules. These limits are designed to provide reasonable protection against
interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause
interference to radio communications. Operation of this equipment in a residential
area is likely to cause interference, in which case the user will be required to correct
the interference at his own expense.
WARNING - Electrostatic Discharge (ESD) Precautions: Any damage caused by
Electrostatic Discharge (ESD) through inadequate earth grounding is NOT covered
under the warranty of this product. See the “Electrostatic (ESD) Precautions”
section of this guide for more information.
Printed in the United States of America

Table of Contents
Part 1 - i2cStick USB to I2C Bus Host Adapter ..........................1
1 Overview .......................................................2
i2cStick USB to I2CBusHostAdapter ................................2
i2cStickVirtualCommunicationsPort(VCP)...........................2
iPort Utility Pack Software .........................................3
i2cStickProgrammer’sReference....................................3
PackingSlip.....................................................3
SystemRequirements .............................................3
2 Interconnects ....................................................3
USBConnector ..................................................4
VirtualCommunicationsPort(VCP) ...............................4
I2C Interface Connector ............................................4
3 HardwareConfiguration ...........................................6
Pull-upResistors .................................................6
Connectinga5Vi2cSticktoa3.3VoltTargetSystem....................6
ConnectingtoanSMBusTargetSystem...............................6
4 ESD (Electrostatic Discharge) Precautions .............................7
Host Computer Grounding .........................................7
Grounding Solutions ..............................................8
5 DriverSoftwareSet-Up............................................8
DriverInstall ....................................................8
DriverUpdate ...................................................9
DriverUninstall..................................................9
6.HardwareSet-Up.................................................9
USBConnection .................................................9
I2CBusConnection ..............................................10
Part 2 - iPort Utility Pack for Windows ...............................11
1 iPort Utility Pack for Windows .....................................13
iPortMessageCenter.............................................13
iPortMessageManager ...........................................14

2 SystemRequirements ............................................15
3 iPort Utility Pack Installation ......................................15
InstallingfromCD...............................................15
InstallingfromtheWeb...........................................15
4 iPortMessageCenter ............................................16
MessageCenterOperations........................................17
StartingtheMessageCenter .....................................17
SelectingtheAdapter ..........................................17
SelecttheCommunicationsPort ..................................18
OptionsMenu ................................................18
EstablishAdapterCommunicationsLink ...........................18
Entering or Editing I2CMessages .................................18
Set I2CAddress ...............................................19
SetMessageRead/WriteDirection ................................19
SpecifyRepeatedStartMessages .................................19
SetTimeDelay ...............................................20
Specify Write Data or Read Byte Count ............................20
InsertingandDeletingMessages..................................21
SavingorLoadingMessageLists .................................21
SendtheMessageList..........................................21
SpecialEventHandling.........................................21
Slave Not Acknowledging ......................................22
CommandLineArguments ........................................23
SetAdapterType..............................................24
Set RS-232 Communication Port .................................24
Set RS-232 Baud Rate ..........................................24
Set I2CBusClockRate .........................................24
Enable/INTSignalMonitor .....................................25
StopOnBusy ................................................25
StopOnArbitrationLoss .......................................25
Stop On Slave Negative Acknowledgment ..........................25
BeepOnBusy ................................................25
BeepOnArbitrationLoss .......................................26
Beep On Slave Negative Acknowledgment .........................26
BeepOn/INTAssert...........................................26
Load I2CMessageListFile......................................26
Saved I2CMessageListFile .....................................27
AutoOpen...................................................27

AutoSend ...................................................27
AutoExit....................................................27
5 iPort MessageManager ..........................................28
MessageManagerOperations ......................................29
StartingtheMessageManager ...................................29
SelecttheAdapter.............................................29
EstablishAdapterCommunicationsLink ...........................30
BasicSetup ..................................................30
AdvancedSetup ..............................................31
Adapter’s Own I2CSlaveAddress ..............................31
GeneralCallEnable .........................................31
I2CBusMasterBitRate ......................................31
I2CBusTime-Out...........................................31
EnableINTSignalMonitor ...................................31
Diagnostic Setup ..............................................32
LogFileLevel .............................................32
LogFileName .............................................32
LogFileSize...............................................32
Sending I2CMessages..........................................33
MasterOperations.............................................33
SpecifyingtheDestinationAddress ...............................33
RepeatedStartMessages........................................33
AutoRepeat..................................................34
Master Transmitting Data .......................................34
SpecifyingMasterTxMessageBytes ...........................34
Sending Master Transmit Messages .............................35
Master Receive Data ...........................................35
SpecifyingDatatoRead......................................35
Negative Acknowledge Last Byte ..............................36
Master Transmit and Receive ....................................36
SlaveOperations ..............................................36
Slave Transmit Data ...........................................36
Slave Receive Data ............................................36
6 Uninstalling Software Components ..................................37
Uninstalling iPort Utility Pack for Windows ...........................37
UninstallingVCPDeviceDriver....................................37
Part 3 - i2cStick Programmer’s Reference ............................39

QuickStart .......................................................40
ASCIICommandInterface ..........................................41
Synchronous Interface Events ......................................42
i2cStickReset ................................................42
StatusDisplay ................................................43
SerialCommunicationsBaudRate ................................43
Close I2CConnection ..........................................44
Set Destination I2CSlaveAddress ................................44
Echo/PromptControl ..........................................44
SerialCommunicationsFlowControl..............................44
I2CGeneralCallControl........................................45
HexOnlyDisplayControl.......................................45
Set i2cStick’s Own I2CSlaveAddress .............................46
I2CBusClockRateControl .....................................46
CommandMenuDisplay .......................................46
InterruptSignalControl/Status ...................................47
Open I2CConnection ..........................................48
MasterReadMessage ..........................................48
Slave Transmit Message ........................................49
Master Transmit Message .......................................50
Set I2CBusTime-oUtinmsec ...................................51
DisplayFirmwareVersion ......................................51
eXtendedCommands ..........................................52
Display Tx bYte Count .........................................54
Asynchronous Interface Events ....................................55
Slave Transmit Request .........................................55
Slave Receive Complete ........................................55
General Call Receive Complete ..................................55
i2cStickReady ...............................................56
Slave Not Acknowledging ......................................56
i2cStickBusy ................................................56
I2CBusArbitrationLoss........................................56
I2CBusErrorDetected .........................................56
I2CBusTime-outDetected ......................................57
i2cStickConnectionClosed .....................................57
InvalidCommandArgument.....................................57
Slave Transmit Request Not Active ...............................57
Invalidi2cStickCommand ......................................57
i2cStick Receive Buffer Overflow ................................58

ExampleCode ....................................................59
i2cStickReset ..................................................59
i2cStick Initialization ............................................59
Master Transmit Message .........................................59
Master Receive Message .........................................59
CommunicationEventProcessing...................................60
i2cStick Revision Report ...........................................63
Additional Information ............................................63
Appendix A - I2C Connector Information .............................64

1
Part 1 - i2cStick USB to I2C Bus Host Adapter
Part 1
USB to I2C Bus
Host Adapter
User’s Guide
Model: MIIC-207