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Lp55231 - Nine-Channel RGB, White-LED Driver

The Lp55231 is a I2C controlled, Nine-Channel RGB, White-LED Driver With Internal Program Memory and Integrated Charge Pump.

Documentation

Usage

This driver currently provides just the fundamentals to drive RGB Leds. It does not currently support

  • Individual control of PWM channels
  • Setting LED drive current
  • Programming

RGB Leds

The following example show how to use the RGB leds on the Sparkfun Lp55231 breakout board.

var i2cDevice = I2cDevice.Create(new I2cConnectionSettings(1, Lp55231.DefaultI2cAddress));

using (var device = new Lp55231(i2cDevice))
{
    device.Reset();

    // Give the IC time to restart
    Thread.Sleep(100);

    device.Enabled = true;

    device.Misc = MiscFlags.ClockSourceSelection
                | MiscFlags.ExternalClockDetection
                | MiscFlags.ChargeModeGainHighBit
                | MiscFlags.AddressAutoIncrementEnable;
                
    ledDriver[0] = Color.FromArgb(0, 255, 0, 0);
    ledDriver[1] = Color.FromArgb(0, 0, 255, 0);
    ledDriver[2] = Color.FromArgb(0, 0, 0, 255);
}