API for the SparkFun* RGB RingCoder. More...

Detailed Description

ID: rgbringcoder
Name: RGB RingCoder
Category: led
Link: https://www.sparkfun.com/products/11040
Manufacturer: sparkfun
Connection: pwm gpio

RGB RingCoder is a breakout board, a circular LED containing 16 LEDs arranged in a ring, and a rotary encoder. The encoder contains an RGB LED as well as a push button function.

The device requires 11 pins, 3 of which must be PWM-capable (for the RGB LEDs).

  
  // There are a lot of pins to hook up.  These pins are valid for the
  // Edison board, but may need to be adjusted for other platforms.
  // In order:
  // enable      - 4
  // latch       - 10
  // clear       - 11
  // clock       - 2
  // data        - 9
  // switch      - 7
  // red pwm     - 3
  // green pwm   - 5
  // blue pwm    - 6
  // encA        - 12
  // encB        - 13
  upm::RGBRingCoder *ringCoder = 
    new upm::RGBRingCoder(4, 10, 11, 2, 9, 7, 12, 13, 3, 5, 6);
  uint16_t spin = 0x0001;
  bool oldState = false;
  int oldPos = 0;
  // Lets go green
  ringCoder->setRGBLED(0.99, 0.01, 0.99);
  while (shouldRun)
    {
      // you spin me round...
      if (spin == 0)
        spin = 0x0001;
      ringCoder->setRingLEDS(spin);
      spin <<= 1;
      // check button state
      bool bstate = ringCoder->getButtonState();
      if (bstate != oldState)
        {
          cout << "Button state changed from " << oldState << " to "
               << bstate << endl;
          oldState = bstate;
        }
      // check encoder position
      int epos = ringCoder->getEncoderPosition();
      if (epos != oldPos)
        {
          cout << "Encoder position changed from " << oldPos << " to "
               << epos << endl;
          oldPos = epos;
        }
      usleep(100000);
    }
      

Public Member Functions
	RGBRingCoder (int en, int latch, int clear, int clk, int dat, int sw, int encA, int encB, int red, int green, int blue)

	~RGBRingCoder ()

void	setRingLEDS (uint16_t bits)

bool	getButtonState ()

int	getEncoderPosition ()

void	clearEncoderPosition ()

void	setRGBLED (float r, float g, float b)

Constructor & Destructor Documentation

RGBRingCoder	(	int	en,
		int	latch,
		int	clear,
		int	clk,
		int	dat,
		int	sw,
		int	encA,
		int	encB,
		int	red,
		int	green,
		int	blue
	)

RGBRingCoder constructor

Parameters

en	Enables GPIO
latch	Latch GPIO
clear	Clears GPIO
clk	Clock GPIO
dat	Data out GPIO
sw	Push button switch GPIO
encA	Encoder A GPIO
encB	Encoder B GPIO
red	RGB red LED PWM
green	RGB green LED PWM
blue	RGB blue LED PWM