On Sat, 13 May 2000, Marc SCHAEFER wrote
> Is it possible to use the POSIX interface to ttys (e.g. serial
> port), for example select(), to be awaken when modem control signal
> change ?
I don't recommend select() for this typw application. It is designed
for use with sockets() and is more complex (slower) than other methods
available with tty's.
> An application would be a special protocol where RTS, CTS, DSR, DTR
> lines are used as communication and special handshake lines, without
> specific delay needs. The protocol is specific and can't be changed.
> It would be possible to implement polling (ie busy waiting), but
> that's a bit strange since I think the hardware supports interrupt
> reporting.
Read my 'serial_suite.tgz'. This is a collection of blurbs about the
care and feeding of the serial ports and some simple programs. There is
a file demonstrating how the lock files should be programmed. There
is a simple getty, a dialer for ppp connections and some other misc
programs.
Via ftp:
ftp scicom.alphacdc.com
Login as "anonymous" then use your full e-mail address as the password.
For me, that is '[EMAIL PROTECTED]'.
cd pub/linux
or:
URL ftp://scicom.alphacdc.com/pub/linux
vern
--
Vernon C. Hoxie [EMAIL PROTECTED]
3975 W. 29th Ave. uucp: 303-455-2670
Denver, Colo., 80212 voice: 303-477-1780
Ninety percent of politics is deciding who to blame.
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