Echelon I/O Model Reference for Smart Transceivers and Neuron Chips - Manual (Page 5)

I/O Model Reference v
Table of Contents
Welcome.........................................................................................................iii
Audience ........................................................................................................iii
Related Documentation ................................................................................iii
Chapter 1. Introduction ..................................................................................... 1
Overview ......................................................................................................... 2
Summary of the Available I/O Models.......................................................... 2
Hardware Considerations............................................................................ 10
I/O Timing Issues......................................................................................... 12
Scheduler-Related I/O Timing Information......................................... 13
Firmware and Hardware-Related I/O Timing Information................ 14
Programming Considerations ..................................................................... 15
Declaring I/O Objects in Neuron C....................................................... 16
Overlaying I/O Objects .......................................................................... 17
Multiplexing I/O Models ....................................................................... 18
Performing I/O: Functions and Events ................................................ 18
General I/O Functions .................................................................... 18
I/O Events........................................................................................ 22
Using Functions or Events ............................................................. 25
I/O Functions for Timer/Counter Objects...................................... 26
I/O Measurements, Outputs, and Functions ....................................... 28
Direct, Serial, and Parallel I/O Models.......................................... 28
Timer/Counter I/O Models.............................................................. 28
Output Models................................................................................. 29
Chapter 2. Direct I/O Models........................................................................... 31
Bit Input/Output .......................................................................................... 32
Hardware Considerations ..................................................................... 32
Programming Considerations............................................................... 34
Syntax .............................................................................................. 34
Usage ............................................................................................... 35
Bit Input Example .......................................................................... 35
Bit Output Example........................................................................ 35
Byte Input/Output........................................................................................ 35
Hardware Considerations ..................................................................... 35
Programming Considerations............................................................... 37
Syntax .............................................................................................. 37
Usage ............................................................................................... 37
Byte Input Example........................................................................ 37
Byte Output Example ..................................................................... 38
Leveldetect Input ......................................................................................... 38
Hardware Considerations ..................................................................... 38
Programming Considerations............................................................... 39
Syntax .............................................................................................. 40
Usage ............................................................................................... 40
Example ........................................................................................... 40
Nibble Input/Output .................................................................................... 40
Hardware Considerations ..................................................................... 40
Programming Considerations............................................................... 42
Syntax .............................................................................................. 42
Usage ............................................................................................... 43
Nibble Input Example .................................................................... 43