/// <summary>
/// Set the value of one bit in the process image.
/// </summary>
/// <param name="address">Address of the byte in the process image</param>
/// <param name="bit">bit position (0-7)</param>
/// <param name="value"></param>
public void SetBitValue(ushort address, byte bit, bool value)
{
var bitValue = new SpiValue
{
Address = address,
Bit = bit,
Value = (byte)(value ? 1 : 0)
};
if (!IsOpen)
{
return;
}
if (Interop.ioctl_value(_piControlHandle, Interop.KB_SET_VALUE, bitValue) < 0)
{
Trace.TraceError("PiControl.SetBitValue: Failed to write bit value.");
}
}
/// <summary>
/// Get the value of one bit in the process image.
/// </summary>
/// <param name="address">Address of the byte in the process image</param>
/// <param name="bit">bit position (0-7)</param>
/// <returns>Bit value</returns>
public bool GetBitValue(ushort address, byte bit)
{
var bitValue = new SpiValue
{
Address = address,
Bit = bit
};
if (!IsOpen)
{
return(false);
}
if (Interop.ioctl_value(_piControlHandle, Interop.KB_GET_VALUE, bitValue) < 0)
{
Trace.TraceError("PiControl.SetBitValue: Failed to read bit value.");
return(false);
}
return(bitValue.Value != 0);
}
internal static extern int ioctl_value(int file, uint cmd, SpiValue value);
