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I/O Model Reference iii
Welcome
For the various input/ouput (I/O) pins on an Echelon
®
Smart Transceiver, an
Echelon Neuron
®
5000 Processor, or Series 3100 Neuron Chip, Echelon’s Neuron
C programming language provides a set of
I/O models
that allow a program to
define
I/O objects
. An I/O model is an abstract definition (including the relevant
firmware driver) of hardware I/O for a Neuron Chip or Smart Transceiver; an I/O
object is software instance of the specific I/O model. Together, they provide
programmable access to one or more I/O pins in a specified configuration and for
a specified input or output waveform definition.
This document describes the many different I/O models that are available for use
with the Neuron Chips and Smart Transceivers. With only a few exceptions, an
I/O model can be used with any Series 3100 device or any Series 5000 device.
Where applicable, this document identifies differences in the I/O models that are
specific to a particular device type.
The information in this document supersedes the equivalent information for
Series 3100 devices contained in the
FT 3120 / FT 3150 Smart Transceiver Data
Book
,
PL 3120 / PL 3150 / PL 3170 Power Line Smart Transceiver Data Book
,
Neuron C Programmer’s Guide
, and
Neuron C Reference Guide
.
Audience
This document assumes that you have a good understanding of general Neuron C
language programming concepts and techniques. It also assumes that you are
familiar with the device requirements for Neuron Chips and Smart Transceivers.
Related Documentation
The following manuals are available from the Echelon Web site
(
www.echelon.com) and provide additional information that can help you develop
applications for Neuron Chip or Smart Transceiver devices:
•
FT 3120 / FT 3150 Smart Transceiver Data Book
(005-0139-01D). This
manual provides detailed technical specifications on the electrical
interfaces, mechanical interfaces, and operating environment
characteristics for the FT 3120
®
and FT 3150
®
Smart Transceivers.
•
Introduction to the LONWORKS Platform
(078-0391-01A)
.
This manual
provides an introduction to the ISO/IEC 14908 (ANSI/CEA-709.1 and
EN14908) Control Network Protocol, and provides a high-level
introduction to L
ONWORKS networks and the tools and components that
are used for developing, installing, operating, and maintaining them.
•
LONMARK
®
Application Layer Interoperability Guidelines.
This manual
describes design guidelines for developing applications for open
interoperable L
ONWORKS devices, and is available from the LONMARK
Web site,
www.lonmark.org.
•
NodeBuilder
®
FX User’s Guide
(078-0405-01A). This manual describes
how to develop a L
ONWORKS device using the NodeBuilder tool.
- I/O Model Reference for Smart 1
- Transceivers and Neuron Chips 1
- Welcome 3
- Audience 3
- Related Documentation 3
- Mini FX User’s Guide 4
- Series 5000 Chip Data Book 4
- Table of Contents 5
- Introduction 11
- Overview 12
- Direct I/O Models 14
- Parallel I/O Models 14
- Serial I/O Models 15
- Overlaying I/O Objects 18
- I/O Timing Issues 22
- Information 24
- Multiplexing I/O Models 28
- General I/O Functions 28
- Neuron C Reference Guide 29
- I/O Events 31
- Neuron C Programmer’s Guide 31
- Using Functions or Events 35
- Timer/Counter I/O Models 38
- Output Models 39
- Bit Input/Output 42
- Bit Input Example 45
- Bit Output Example 45
- Byte Input/Output 45
- Byte Input Example 47
- Byte Output Example 48
- Leveldetect Input 48
- Nibble Input/Output 50
- Nibble Input Example 53
- Nibble Output Example 53
- Touch Input/Output 53
- Muxbus Input/Output 62
- Parallel Input/Output 65
- Master Program 71
- Slave Program 72
- Slave B Mode 73
- Token Passing 76
- Handshaking 76
- Transferring Data 76
- Resynchronization Procedure 77
- Using the IRQ Signal 80
- Bitshift Input/Output 86
- Bitshift Input Example 90
- Bitshift Output Example 90
- I2C Input/Output 90
- Magcard Bitstream Input 94
- Magcard Input 96
- Magtrack1 Input 99
- Programming Considerations 100
- Syntax 101
- Example 102
- Neurowire Input/Output 102
- Hardware Considerations 102
- Neurowire Master Mode 103
- Neurowire Slave Mode 104
- SCI (UART) Input/Output 108
- Serial Input/Output 113
- Serial Input Example 117
- Serial Output Example 117
- SPI Input/Output 117
- SPI Master 122
- SPI Master (Neurowire 122
- SPI Slave 123
- Wiegand Input 128
- Timer/Counter Input Models 133
- Dualslope Input 135
- Neuron C Resources 138
- Edgelog Input 139
- Infrared Input 144
- Ontime Input 148
- Period Input 151
- Pulsecount Input 155
- Quadrature Input 158
- Totalcount Input 161
- Timer/Counter Output Models 165
- Edgedivide Output 166
- Frequency Output 169
- Infrared Pattern Output 172
- Oneshot Output 175
- Pulsecount Output 178
- Pulsewidth Output 181
- Stretched Triac Output 184
- Triac Output 189
- Example 1 192
- Example 2 193
- Triggered Count Output 193
- Timer/Counter Periods and 197
- Resolution 197
- InputClock 199
- And so on 200
- Period = 201
- Frequency = 1 / 201
- 196 Index 206
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