/// <summary>
/// Writes values of a given LED to the device.
/// </summary>
/// <param name="led">LED to write to the device.</param>
private void WriteLED(APA102LED led)
{
var sendBright = (int)((31.0m * led.Brightness)) & 31;
WriteByte(Convert.ToByte(224 | sendBright));
WriteByte(Convert.ToByte(led.Blue));
WriteByte(Convert.ToByte(led.Green));
WriteByte(Convert.ToByte(led.Red));
}
/// <summary>
/// Constructors.
///
/// Configurates all required values.
/// </summary>
private APA102()
{
// Setup list.
for (int i = 0; i < NUMBER_OF_LEDS; i++)
{
leds[i] = new APA102LED();
}
// Ensure required instance are set.
if (gpioController == null)
{
throw new Exception("Default GPIO controller not found.");
}
// Setup pins.
dataPin = gpioController.OpenPin(GPIO_NUMBER_DATA);
clockPin = gpioController.OpenPin(GPIO_NUMBER_CLOCK);
dataPin.SetDriveMode(GpioPinDriveMode.Output);
clockPin.SetDriveMode(GpioPinDriveMode.Output);
// Write LED values to device.
WriteLEDValues();
}
