/// <summary>
/// Should be tested with 74CH165
/// </summary>
/// <param name="nusbio"></param>
/// <param name="dataPin"></param>
/// <param name="clockPin"></param>
/// <param name="bitOrder"></param>
/// <returns></returns>
public static int ShiftIn(Nusbio nusbio, NusbioGpio dataPin, NusbioGpio clockPin, int bitOrder)
{
int value = 0;
int i;
for (i = 0; i < 8; ++i)
{
nusbio.GPIOS[clockPin].DigitalWrite(PinState.High);
if (bitOrder == LSBFIRST)
{
value |= Nusbio.ConvertTo1Or0(nusbio.GPIOS[dataPin].DigitalRead()) << i;
}
else
{
value |= Nusbio.ConvertTo1Or0(nusbio.GPIOS[dataPin].DigitalRead()) << (7 - i);
}
nusbio.GPIOS[clockPin].DigitalWrite(PinState.Low);
}
return(value);
}
public static int ShiftIn(IDigitalWriteRead dwr, int dataPin, int clockPin, BitOrder bitOrder)
{
int value = 0;
int i;
for (i = 0; i < 8; ++i)
{
dwr.DigitalWrite(clockPin, PinState.High);
if (bitOrder == BitOrder.LSBFIRST)
{
value |= Nusbio.ConvertTo1Or0(dwr.DigitalRead(dataPin)) << i;
}
else
{
value |= Nusbio.ConvertTo1Or0(dwr.DigitalRead(dataPin)) << (7 - i);
}
dwr.DigitalWrite(dataPin, PinState.Low);
}
return(value);
}
/// <summary>
/// Read the value of one analog port using software bit banging.
/// </summary>
/// <param name="port"></param>
/// <returns></returns>
public int ReadSpiSoftware(int port)
{
this._spiEngine.Nusbio.SetPinMode(this._spiEngine.MisoGpio, PinMode.Input);
int adcValue = 0;
int command = WinUtil.BitUtil.ParseBinary("B11000000");
command |= (port) << 3;
var nusbio = this._spiEngine.Nusbio;
this._spiEngine.Select();
for (int i = 7; i >= 4; i--)
{
var r = command & (1 << i);
nusbio[this._spiEngine.MosiGpio].DigitalWrite(r != 0);
nusbio[this._spiEngine.ClockGpio].DigitalWrite(true);
nusbio[this._spiEngine.ClockGpio].DigitalWrite(false);
}
nusbio[this._spiEngine.ClockGpio].DigitalWrite(true); // ignores 2 null bits
nusbio[this._spiEngine.ClockGpio].DigitalWrite(false);
nusbio[this._spiEngine.ClockGpio].DigitalWrite(true);
nusbio[this._spiEngine.ClockGpio].DigitalWrite(false);
for (var i = 10; i > 0; i--) // Read bits from adc since it is ADC is 10 bits
{
adcValue += Nusbio.ConvertTo1Or0(nusbio[this._spiEngine.MisoGpio].DigitalRead()) << i;
nusbio[this._spiEngine.ClockGpio].DigitalWrite(true);
nusbio[this._spiEngine.ClockGpio].DigitalWrite(false);
}
this._spiEngine.Unselect();
return(adcValue);
}
