protected override bool _Start()
{
USBIFSTATUS sTATUS = USBIF.SendCommand(0x07, new uint[] { 0u, (uint)RX_BUF_SIZE, 0 }, 3);
if (sTATUS != USBIFSTATUS.E_OK)
{
throw new IOException(sTATUS.ToString());
}
if (!USBIF.Reset())
{
throw new IOException("can't reset device");
}
var result = btc_SetStartDMA();
return(true);
}