GroveCircularLED Class Reference

API for the Grove Circular LED module. More...

Detailed Description

• ID: grovecircularled
• Name: Circular LED
• Category: display
• Manufacturer: seeed
• Link: http://www.seeedstudio.com/wiki/Grove_-_Circular_LED
• Connection: gpio

This is a circular LED ring based on the MY9221 chip. It is often used with a rotary encoder and has 24 controllable LEDs.

  
  // Instantiate a Grove Circular LED on D9 for data, D8 for clock
  
  upm::GroveCircularLED *circle = new upm::GroveCircularLED(9, 8);
  
  int level = 0;
  while (shouldRun)
    {
      circle->setSpinner(level);
      level = (level + 1) % 24;
      usleep(100000);
    }

Public Member Functions
	GroveCircularLED (int dataPin, int clockPin)
virtual	~GroveCircularLED ()
void	setSpinner (uint8_t position)
void	setLevel (uint8_t level, bool direction=true)
Public Member Functions inherited from MY9221
	MY9221 (int dataPin, int clockPin, int instances=1)
virtual	~MY9221 ()
void	setAutoRefresh (bool enable)
void	setLED (int led, bool on)
void	setLowIntensityValue (int intensity)
void	setHighIntensityValue (int intensity)
void	setAll ()
void	clearAll ()
void	refresh ()

Additional Inherited Members
Protected Attributes inherited from MY9221
my9221_context	m_my9221

Constructor & Destructor Documentation

GroveCircularLED	(	int	dataPin,
		int	clockPin
	)

Instantiates an GroveCircularLED object

Parameters

dataPin	Data pin
clockPin	Clock pin

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~GroveCircularLED ( )

virtual

GroveCircularLED destructor

Member Function Documentation

void setSpinner

(

uint8_t

position

)

Sets the spinner (turns off all LEDs but selected one)

Parameters

position

Selected position for the spinner (0-23)

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void setLevel	(	uint8_t	level,
		bool	direction = true
	)

Sets the lighting status

Parameters

level	Selected level for the circular LED (0-23)
direction	Up or down; up is true and default

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Inheritance diagram for GroveCircularLED:

Collaboration diagram for GroveCircularLED:

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

• src/my9221/grovecircularled.hpp
• src/my9221/grovecircularled.cxx