Andre-John Mas wrote:
Hi,
I have been asked to display a message to the serial console when
a serial connection is established. What methods are available to
me to know that a serial connection has been established, so I can
display this message. Is there also something to let me know that
the serial connection has been closed, so I can log out any
administration sessions that had been opened?
I a using an Adder II based card, if that changes anything?
There's no standard for this. The best you can do, if the hardware
device supports it, is detect certain OOB [control] signals which
are only asserted when something is connected & turned on. On the
Adder, you might be able to do this, but only on the SCC port as
the SMC port does not have any handshake/control pins.
--
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Gary Thomas | Consulting for the
MLB Associates | Embedded world
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