private unsafe void Transfer(byte *writeBufferPtr, byte *readBufferPtr, int buffersLength)
{
var tr = new spi_ioc_transfer()
{
tx_buf = (ulong)writeBufferPtr,
rx_buf = (ulong)readBufferPtr,
len = (uint)buffersLength,
speed_hz = _settings.ClockFrequency,
bits_per_word = (byte)_settings.DataBitLength,
delay_usecs = 0,
};
int ret = ioctl(_deviceFileDescriptor, SPI_IOC_MESSAGE_1, new IntPtr(&tr));
if (ret < 1)
{
throw Utils.CreateIOException("Error performing Spi data transfer", ret);
}
}
private unsafe void Transfer(byte *writeBufferPtr, byte *readBufferPtr, int buffersLength)
{
var tr = new spi_ioc_transfer()
{
tx_buf = (ulong)writeBufferPtr,
rx_buf = (ulong)readBufferPtr,
len = (uint)buffersLength,
speed_hz = _speed,
bits_per_word = 8,
delay_usecs = 0
};
int result = Interop.ioctl(_deviceFileDescriptor, SPI_IOC_MESSAGE_1, new IntPtr(&tr));
if (result < 1)
{
throw new IOException($"Error {Marshal.GetLastWin32Error()} performing SPI data transfer.");
}
}
