// Serial-In-Parallel-Out
private void WriteSIPO(byte b)
{
for (int i = 8; i >= 1; i--)
{
PinDIO.Write((b & 0x80) > 0 ? GpioPinValue.High : GpioPinValue.Low);
b <<= 1;
PulseSCLK();
}
}
/// <summary>
/// Create a new instance of LED74HC595Driver
/// </summary>
/// <param name="dioPin">DIO Pin Number</param>
/// <param name="rclkPin">RCLK Pin Number</param>
/// <param name="sclkPin">SCLK Pin Number</param>
public LED74HC595Driver(int dioPin, int rclkPin, int sclkPin)
{
var gpio = GpioController.GetDefault();
// setup the pins
PinDIO = gpio.OpenPin(dioPin);
PinDIO.SetDriveMode(GpioPinDriveMode.Output);
PinRCLK = gpio.OpenPin(rclkPin);
PinRCLK.SetDriveMode(GpioPinDriveMode.Output);
PinSCLK = gpio.OpenPin(sclkPin);
PinSCLK.SetDriveMode(GpioPinDriveMode.Output);
// initialize the pins to low
PinDIO.Write(GpioPinValue.Low);
PinRCLK.Write(GpioPinValue.Low);
PinSCLK.Write(GpioPinValue.Low);
}
