[LinuxPPS] linuxpps and parallel report

[Rodolfo Giometti]

On Fri, Jan 12, 2007 at 08:25:27AM -0800, gnu not unix wrote:

> So far the only problem is that I tried the atom "fudge flag2 1"
> (to use the opposite edge of the TTL signal)
> and got a kernel error logged (line split for clarity):
> 
> Jan 11 22:27:28 wraith ntpd[2289]: 
>     refclock_atom: time_pps_setparams failed: Invalid argument

That's why lp PPS source is defined as follow:

   port->pps_info.mode = PPS_CAPTUREASSERT | PPS_OFFSETASSERT | \
                   PPS_ECHOASSERT | \
                   PPS_CANWAIT | PPS_TSFMT_TSPEC;

as did into PPSkit... if you wish enable capturing on both edges you
should use PPS_CAPTUREBOTH in place of PPS_CAPTUREASSERT and add
PPS_OFFSETCLEAR.

Ciao,

Rodolfo

-- 

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