<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><DIV><BR class="khtml-block-placeholder"></DIV><DIV>You could make something based on libusb, but USB is pretty complicated, so you'll want something higher level. Perhaps these devices are actually USB-serial or USB-CDC (like serial). Then they would not be hard to use, provided you have a driver to make them show up like a serial port.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>.hc</DIV><BR><DIV><DIV>On Sep 24, 2007, at 6:36 PM, Thomas O Fredericks wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite">Nope, not possible. USB is not like a com port (even thought you can emulate a com port with USB). USB requires a specific driver tailored to the target device (USB communication is not similar to rs-232 serial communication, the main difference being that an end device can not send data to the computer without a direct request from the computer). <BR><BR>Tom<BR><BR><DIV><SPAN class="gmail_quote">On 9/24/07, <B class="gmail_sendername">B. Bogart</B> <<A href="mailto:ben@ekran.org">ben@ekran.org</A>> wrote:</SPAN><BLOCKQUOTE class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hey all,<BR><BR>I'm looking at rs232 controllable PTX systems, and they seem to be more<BR>and more usb and less and less rs232.<BR><BR>So is there anything like [comport] that allows one to send bytes to usb<BR>devices? I think a general mechanism, like [comport] that would work for <BR>all usb devices would be better than a slew of objects for each specific<BR>usb device...<BR><BR>Thoughts?<BR><BR>.b.<BR><BR>_______________________________________________<BR>PD-dev mailing list<BR><A href="mailto:PD-dev@iem.at"> PD-dev@iem.at</A><BR><A href="http://lists.puredata.info/listinfo/pd-dev">http://lists.puredata.info/listinfo/pd-dev</A><BR></BLOCKQUOTE></DIV><BR><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">_______________________________________________</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">PD-dev mailing list</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="mailto:PD-dev@iem.at">PD-dev@iem.at</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="http://lists.puredata.info/listinfo/pd-dev">http://lists.puredata.info/listinfo/pd-dev</A></DIV> </BLOCKQUOTE></DIV><BR><DIV> <SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><BR class="Apple-interchange-newline"><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><DIV><BR></DIV><DIV>----------------------------------------------------------------------------</DIV><DIV><BR></DIV><DIV>I have the audacity to believe that peoples everywhere can have three meals a day for their bodies, education and culture for their minds, and dignity, equality and freedom for their spirits. <SPAN class="Apple-converted-space"> </SPAN>- Martin Luther King, Jr.</DIV><BR class="Apple-interchange-newline"></SPAN></SPAN> </DIV><BR></BODY></HTML>