[ntp:questions] Sure GPS - Very High Jitter and Offset
mlichvar at redhat.com
Mon Aug 15 18:59:23 UTC 2011
On Mon, Aug 15, 2011 at 12:46:04PM -0500, Ken Link wrote:
> Does anyone know of any Linux CLI tools that display (in some way or
> another) the serial control signals received on a serial port?
You can cat the /proc/tty/driver/serial file in a loop and see if the
CD bit is flipping.
0: uart:16550A port:000003F8 irq:4 tx:1422 rx:184849390 fe:4891 pe:31 RTS|DTR|CD
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