It has nothing to do with when or whether the computer loads the driver for the USB to serial adaptor. It just doesn't support the hardware-handshaking that speakup and the hardware synth need. You might hear the effect that for the first few seconds it seems to work but then goes silent. I assume this is because speakup is waiting for the hand-shake from the synth that indicates it has finished the last chunk and is ready for more. I had email once before about this privately from someone trying to use a USB to serial adaptor and I recommended he install an RS232 serial port card and that fixed his issues. Mike On 19/04/2015 17:10, Glenn / Lenny wrote: > I have only used a USB to serial in Windows. > But I thought that others had done it after the computer had gone through > its initial screens. > Glenn > ----- Original Message ----- > From: "Mike Ray" <mike@xxxxxxxxxxxxxxx> > To: <speakup@xxxxxxxxxxxxxxxxx> > Sent: Sunday, April 19, 2015 11:05 AM > Subject: Re: Connecting hardware synthesizer to speakup without serial port. > > > > No, speakup and the Apollo, or any other hardware speech-synthesiser > will not work with a USB to serial adaptor. > > I believe this to be because a genuine serial port (RS232) and speakup > use the hardware hand-shaking pins (RTS and CTS?), to communicate > readiness to send and recieve data. The USB to serial adaptors will > either not support this hardware hand-shaking or it takes a differently > written program to use it. > > Mike > > > On 19/04/2015 16:43, Glenn / Lenny wrote: >> Hi, >> I thought that it will work with a USB to serial adapter, but you may not >> get the initial computer boot-up messages because the USB to serial driver >> would not have been loaded yet. >> Glenn >> ----- Original Message ----- >> From: "łukasz golonka" <wulfryk1@xxxxxxxxx> >> To: <speakup@xxxxxxxxxxxxxxxxx> >> Sent: Sunday, April 19, 2015 6:01 AM >> Subject: Connecting hardware synthesizer to speakup without serial port. >> >> >> Hi. I have apollo II synthetiser. I would like to connect it to >> speakup, but i have computers without physical serial port. Usb to >> serial interfaces don't work with speakup of course. Is it possible to >> connect speakup to apollo. I've heard about possibility to connect >> external synthetiser to speakup using express card to com adapter, but >> my computer doesn't have physical express card port, so i must again >> use express card to usb converter. >> Thank you for help. >> Lukasz. >> _______________________________________________ >> Speakup mailing list >> Speakup@xxxxxxxxxxxxxxxxx >> http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup >> >> _______________________________________________ >> Speakup mailing list >> Speakup@xxxxxxxxxxxxxxxxx >> http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup >> > > -- Michael A. Ray Analyst/Programmer Witley, Surrey, South-east UK Interested in accessibility on the Raspberry Pi? Visit: http://www.raspberryvi.org/ >From where you can join our mailing list for visually-impaired Pi hackers _______________________________________________ Speakup mailing list Speakup@xxxxxxxxxxxxxxxxx http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup
