> --nextPart12368324.QZVX1XDbdm > Content-Type: text/plain; > charset="us-ascii" > Content-Transfer-Encoding: quoted-printable > Content-Disposition: inline > > Hi, > Does anyone know of a way to manipulate the modem control lines from userla= > nd? > SVR4 has termiox and friends but I can't see an equivalent for FreeBSD. > > The reason I ask is I am trying to talk to an RS485 bus - it is half duplex= > =20 > and the protocol converter uses RTS to control the data direction. > > I have a kernel driver which handles this but it has it's limitations (eg=20 > takes over the port and boot up, only usable on certain devices). > > I'm going to make it a line discipline eventually, but this was a stepping= > =20 > stone. >
see /usr/include/sys/ttycom.h and TIOCMBIS, TIOCMBIC, TIOCMGET danny _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
