[LinuxPPS] PPS/ntpd fails on fresh startup

[Rodolfo Giometti]

On Wed, Oct 15, 2008 at 02:01:53PM +0200, Udo van den Heuvel wrote:
> Udo van den Heuvel wrote:
> > Rodolfo Giometti wrote:
> >> The "line" parameter should be 18.
> > 
> > It is:
> 
> BTW: ntp_refclock.h
> 
> /*
>  * Line discipline flags. These require line discipline or streams
>  * modules to be installed/loaded in the kernel. If specified, but not
>  * installed, the code runs as if unspecified.
>  */
> #define LDISC_STD       0x00    /* standard */
> #define LDISC_CLK       0x01    /* tty_clk \n intercept */
> #define LDISC_CLKPPS    0x02    /* tty_clk \377 intercept */
> #define LDISC_ACTS      0x04    /* tty_clk #* intercept */
> #define LDISC_CHU       0x08    /* depredated */
> #define LDISC_PPS       0x10    /* ppsclock, ppsapi */
> #define LDISC_RAW       0x20    /* raw binary */
> #define LDISC_ECHO      0x40    /* enable echo */
> #define LDISC_REMOTE    0x80    /* remote mode */
> #define LDISC_7O1      0x100    /* 7-bit, odd parity for Z3801A */

Great! I think we can use these define to manage the LinuxPPS ldisc
settings!

I suppose that if flasg LDISC_PPS is define then NTPD set a proper
ldisc, you should tel to NTPD to use ldisc N_PPS (18) and everything
should go well. :)

Ciao,

Rodolfo

-- 

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