Re: [Discuss-gnuradio] 1 PPS input for old USRP board

[Kyle Pearson]

You can connect the 1PPS to the digital io pins on the basic or lf
daughtercards. From there you can use the read_io() method in python
to read the value on the pins. Just make sure that your 1PPS is
between about 1.5 and 3.3V; under 1.5V it may not be detected, over
3.3V you could fry a pin.

-Kyle

On Tue, Sep 16, 2008 at 2:48 PM, subodh chiwate <address@hidden> wrote:
> Hi,
>
> I want to give an external input to the old USRP board using a 1 PPS GPS
> output. Is it possible to do so? if yes how?
> Where can I access such external inputs in software ?
> Thanx.
>
> Regards
> Subodh
>
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