mmlr@xxxxxxxx wrote: > * Remove a line of useless or-ing the same values on the variable. [...] > int32 control; > control = (state & CLS_LINE_RTS) ? FTDI_SIO_SET_RTS_HIGH : > FTDI_SIO_SET_RTS_LOW; > - control |= (state & CLS_LINE_DTR) ? FTDI_SIO_SET_DTR_HIGH : > FTDI_SIO_SET_DTR_LOW; It actually says RTS and DTR, so it isn't the same value - maybe this had another reason? Bye, Axel.