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 ?
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.
Thanks for any pointer.
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