Jeremy Chadwick wrote:
On Mon, Feb 04, 2008 at 12:53:58PM +0800, Ganbold wrote:
Hi,
I'm trying to use serial port but the system says device busy.
daemon# cu -l /dev/cuad0 -s 9600
/dev/cuad0: Device busy
link down
Does the same happen if you do `cu -l ttyd0 -s 9600`?
It works and fstat shows:
daemon# fstat /dev/cuad0
USER CMD PID FD MOUNT INUM MODE SZ|DV R/W NAME
daemon# fstat /dev/ttyd0
USER CMD PID FD MOUNT INUM MODE SZ|DV R/W NAME
root cu 5574 3 /dev 41 crw------- ttyd0 rw
/dev/ttyd0
root cu 5573 3 /dev 41 crw------- ttyd0 rw
/dev/ttyd0
daemon#
Is it expected behaviour?
thanks,
Ganbold
How to check whether something is using serial port?
Any idea?
fstat should help here.
--
Success is in the minds of Fools. -- William Wrenshaw, 1578
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