RotaryEncoder Class Reference

C++ API for the Grove Rotary Encoder. More...

Detailed Description

• ID: rotaryencoder
• Name: Grove Rotary Encoder
• Category: other
• Manufacturer: seeed
• Link: http://www.seeedstudio.com/wiki/Grove_-_Encoder
• Connection: gpio
• Kit: gsk

UPM module for the Grove Rotary Encoder. A Rotary Encoder encodes a rotation signal into electronic pulses that can be used to measure rotation and direction. It is useful in cases where a rotary knob is required, but using a potentiometer is not desirable. A rotary encoder can turn a full 360 degrees+ without a stop and does not place a resistive load on the circuit, as is the case with a potentiometer.

This module maintains a position that is incremented or decremented according to the rotation on the encoder.

  // Instantiate a Grove Rotary Encoder, using signal pins D2 and D3
  upm::RotaryEncoder* rotaryencoder = new upm::RotaryEncoder(2, 3);
  
  while (shouldRun)
    {
      cout << "Position: " << rotaryencoder->position() << endl;
      usleep(100000);
    }

Public Member Functions
	RotaryEncoder (int pinA, int pinB)
	~RotaryEncoder ()
void	initPosition (int count=0)
int	position ()

Static Public Member Functions
static void	signalAISR (void *ctx)

Constructor & Destructor Documentation

RotaryEncoder	(	int	pinA,
		int	pinB
	)

RotaryEncoder constructor

Parameters

pinA	digital pin to use for signal A
pinB	digital pin to use for signal B

~RotaryEncoder

(

)

RotaryEncoder Destructor

Member Function Documentation

void initPosition

(

int

count = 0

)

Reset the position to a given number, default is 0.

Parameters

count

integer to initialize the position to

int position

(

)

Get the position value

void signalAISR ( void *  ctx )

static

ISR for signal A

Parameters

ctx	user context for the ISR (*this pointer)

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The documentation for this class was generated from the following files:

• /var/lib/jenkins/workspace/upm-doc-stable/src/rotaryencoder/rotaryencoder.h
• /var/lib/jenkins/workspace/upm-doc-stable/src/rotaryencoder/rotaryencoder.cxx