/// <summary>
/// Constructor a ShiftRegister74595 object.
/// </summary>
/// <param name="pins">Number of pins in the shift register (should be a multiple of 8 pins).</param>
/// <param name="config">SPI Configuration object.</param>
public x74595(int pins, Spi.Configuration config)
{
if ((pins > 0) && ((pins % 8) == 0))
{
_pins = new bool[pins];
_numberOfChips = pins / 8;
Clear();
_spi = new SPIBus(config);
}
else
{
throw new ArgumentOutOfRangeException(
"x74595: Size must be greater than zero and a multiple of 8 pins");
}
}
public PCD8544(IDigitalPin chipSelectPin, IDigitalPin dcPin, IDigitalPin resetPin,
Spi.SPI_module spiModule = Spi.SPI_module.SPI1,
uint speedKHz = 4000)
{
spiBuffer = new byte[Width * Height / 8];
dataCommandPort = new DigitalOutputPort(dcPin, true);
resetPort = new DigitalOutputPort(resetPin, true);
var spiConfig = new Spi.Configuration(
SPI_mod: spiModule,
ChipSelect_Port: chipSelectPin,
ChipSelect_ActiveState: false,
ChipSelect_SetupTime: 0,
ChipSelect_HoldTime: 0,
Clock_IdleState: false,
Clock_Edge: true,
Clock_RateKHz: speedKHz);
spi = new Spi(spiConfig);
Initialize();
}
