Led

All boards come with an RGB led on the pcb which is controlled through the Led interface.

import com.mbientlab.metawear.module.Led;

final Led led = board.getModule(Led.class);

Setting Patterns

The Led interface comes with 3 preset patterns for ease of access to the LED.

Pattern	Description
Blink	Quickly flash the LED followed by an longer off period
Pulse	Gradual and periodic transition between a low and high intensity
Solid	Keep the LED on at a fixed brightness

::

import com.mbientlab.metawear.module.Led.*;

// use the solid preset pattern for the blue LED led.editPattern(Color.BLUE, PatternPreset.SOLID).commit();

Developers can directly set the parameters themselves if desired using the variant editPattern method.

// Set the green channel to turn on for 5 seconds
led.editPattern(Color.GREEN)
        .riseTime((short) 0)
        .pulseDuration((short) 1000)
        .repeatCount((byte) 5)
        .highTime((short) 500)
        .highIntensity((byte) 16)
        .lowIntensity((byte) 16)
        .commit();

Pattern Playback

Controlling pattern playback is handled with play, pause, and stop methods. The stop method also clears programmed patterns if called with true.

import com.mbientlab.metawear.module.Led;

// play the pattern
led.play();

// stop and clear all patterns
led.stop(true);