private int Write(Mcp23S17Register port, byte data)
{
ISpiTransferBuffer transferBuffer = this.spiConnection.CreateTransferBuffer(3, SpiTransferMode.Write);
transferBuffer.Tx[0] = CmdWrite;
transferBuffer.Tx[1] = (byte)port;
transferBuffer.Tx[2] = data;
var result = this.spiConnection.Transfer(transferBuffer);
return(result);
}
internal byte Read(Mcp23S17Register port)
{
ISpiTransferBuffer transferBuffer = this.spiConnection.CreateTransferBuffer(3, SpiTransferMode.ReadWrite);
transferBuffer.Tx[0] = CmdRead;
transferBuffer.Tx[1] = (byte)port;
transferBuffer.Tx[2] = 0;
var result = this.spiConnection.Transfer(transferBuffer);
return(transferBuffer.Rx[2]);
}
