Index
 
  Reference for Wiring 1.0 (ALPHA) 0020+. 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.
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