Hi Alan,
(2011/11/02 20:00), Alan Cox wrote:
Called ".get_mctrl" function, other software can know incoming carrier
detection.
Or you mean a uart driver must detect incoming carrier with interrupt ?
If a user opens a tty port which has no carrier signal then the open is
supposed to block until the carrier is raised unless either clocal
termios or O_NDELAY open flags are set.
That usually means you need to take the carrier raise interrupt in order
to wake out of open in this case.
I understand.
We need to add modem status interrupt processing.
Thanks,
--
tomoya
ROHM Co., Ltd.
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