Encoder::attach()\ Encoder \ Language (API) \ Wiring ALPHA 1.0
Author: Hernando Barragán
Description: Wiring is an electronic sketchbook and hardware electronics for developing ideas. It is a context for learning fundamentals of computer programming and prototyping with electronics within the context of the electronic arts.
Keywords: Wiring, Processing, Interactive Media, Electronic Arts, Programming, C, C++, Hernando Barragán

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Reference for Wiring version 0024+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.

Class | Encoder
Name | ### attach()
Examples |
    #include "Encoder.h"

    Encoder myEncoder;

    void setup() {
      myEncoder.attach(2, 8);  // attaches a encoder with phaseA connected to pin 2 and phaseB connected to pin 8
    }

    void loop() {
      myEncoder.write(0);     // position the encoder angle at 0
    }
    #include "Encoder.h"

    Encoder myEncoder;
    Encoder mySecondEncoder;

    void setup() {
      myEncoder.attach(2, 8);         // attaches an encoder with phaseA connected to pin 2 and phaseB connected to pin 8
      mySecondEncoder.attach(3, 15);  // attaches an encoder with phaseA connected to pin 3 and phaseB connected to pin 15
    }

    void loop() {
      myEncoder.write(myencoder, 0); // position the encoder angle at 0
      mySecondEncoder.write(100);    // position the encoder angle at 100
    }
Description | The Wiring encoder library provides for 4 encoder channels, so it can drive up to 4 encoders at a time. The encoder's phaseA cable can be connected to digital I/O pins 2, 3, 38 or 39 exclusively, on the Wiring I/O board. This is because the library is based on external interruptions which can only happen on these specific pins. The phaseB cable can be connected to any other digital I/O pin of the Wiring I/O board. The attach(phaseAPin, phaseBPin) method attaches an Encoder variable to the pins where the encoder is connected.
Syntax |
    encoder.attach(pinA, pinB)
Parameters |
pinA | Encoder phase A pin, it can be 2, 3, 38 or 39
pinB | Encoder phase B pin, it can be any Wiring pin
encoder | The Encoder variable.
Returns | None
Usage | Application

Updated on October 31, 2009 01:47:43pm PDT