public byte[] SpiXfer(int handle, byte[] txBuff)
{
byte[] rxBuff = new byte[txBuff.Length];
GCHandle tx = GCHandle.Alloc(txBuff, GCHandleType.Pinned);
try
{
GCHandle rx = GCHandle.Alloc(rxBuff, GCHandleType.Pinned);
try
{
short ret = PiGpioNativeMethods.spiXfer((ushort)handle, tx.AddrOfPinnedObject(), tx.AddrOfPinnedObject(), (ushort)txBuff.Length);
if (ret < 0)
{
throw new PiGPIOException(ret);
}
}
finally
{
rx.Free();
}
}
finally
{
tx.Free();
}
return(rxBuff);
}