GroveCircularLED Class Reference

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

Detailed Description

• ID: grovecircularled
• Name: Grove 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 gpio pins 5 and 4
  
  upm::GroveCircularLED *circle = new upm::GroveCircularLED(5, 4);
  
  int level = 0;
  while (shouldRun)
    {
      circle->setSpinner(level);
      level = (level + 1) % 24;
      usleep(100000);
    }

Public Member Functions
	GroveCircularLED (uint8_t di, uint8_t dcki)
mraa::Result	setLevel (uint8_t level, bool direction=true)
mraa::Result	setSpinner (uint8_t position)
mraa::Result	setStatus (bool status[24])
std::string	name ()

Constructor & Destructor Documentation

GroveCircularLED	(	uint8_t	di,
		uint8_t	dcki
	)

Instantiates an MY9221 object

Parameters

di	Data pin
dcki	Clock pin

Member Function Documentation

mraa::Result setLevel	(	uint8_t	level,
		bool	direction = true
	)

Sets the lighting status

Parameters

level	Selected level for the circular LED (0-24)
direction	Up or down; up is true and default

mraa::Result setSpinner

(

uint8_t

position

)

Sets the spinner (lights up all the other LEDs but one)

Parameters

position

Selected position for the spinner (0-23)

mraa::Result setStatus

(

bool

status[24]

)

Sets the lighting status

Parameters

status

Boolean array (24 elements)

std::string name ( )

inline

Returns the name of the component

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

• /iotdk/jenkins/workspace/upm-doc-stable/src/grovecircularled/grovecircularled.h
• /iotdk/jenkins/workspace/upm-doc-stable/src/grovecircularled/grovecircularled.cxx