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I have tried to drop DTR and RTS using
ioctl(fd, TIOCMBIC,
TIOCM_DTR)
and ioctl(fd, TIOCMBIC, TIOCM_RTS)
but two calls have
absolutely no effect on the lines
(by checking with a break-out
box).
If I set speed to B0 using tcsetattr
both
lines are dropped but I would like to
control them individually.
The port is open with
CLOCAL|HUPCL|CRTSCTS.
Kernel is 2.2.5 and 2.2.12 on RedHat
6.0.
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