private SPIResult Transfer(ADDRESS address, COMMAND command, int?value = null)
{
var l = new List <byte>();
if (value.HasValue)
{
l.Add(build_command(address, command));
l.Add(((byte)(value & DATA_MASK_WORD)));
}
else
{
l.Add(build_command(address, command));
}
var r = _spiEngine.Transfer(l);
if (r.Succeeded)
{
r.Succeeded = this.ValidateOperation(r, address, command, value);
}
return(r);
}