Re: [chrony-users] Chrony PPS question

[Joe Smith <joe.smith@xxxxxxxxxxxxxxxxxxx>]

Thanks so much for your response. I was able to discover what the issue was. The pulse was coming in but it was too narrow. It was around 4.2ms wide instead of the normal 100ms. I was able to utilize a Trimble utility to make the pulse wider and that solved the issue. Thanks again for your help.

On Mon, Apr 29, 2019 at 3:36 AM Miroslav Lichvar <mlichvar@xxxxxxxxxx> wrote:

On Fri, Apr 26, 2019 at 10:28:35AM -0400, Joe Smith wrote:
> Exerpt from dmesg output
>
> [   21.283132] pps pps0: new PPS source ocp:bs_pinmode_p9_12_0x27_pinm
> [   21.283252] pps pps0: Registered IRQ 88 as PPS source
>
> I'm at a loss as to why I'm not seeing the pulses on /dev/pps0.. Any
> thoughts or suggestions?

I have no experience with the BeagleBone. As a high-level check, if
the HW/kernel configuration is correct, you should see timestamps
being updated in one of

/sys/class/pps/pps0/assert
/sys/class/pps/pps0/clear

If both are zero, there is no point in testing chronyd.

--
Miroslav Lichvar

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