Re: [Discuss-gnuradio] clock synchronization by message passing

[Adeel Anwar]

Josh,

>I didnt add every possible setting. But I am happy to add more on
>request! I'm gathering that someone would like to make a configuration
>and control block that could perform the synchronization tasks w/ a
>GPSDO or some external clock and time source.

I think it will also be very useful to add "set_rate()" & "get_rate". This will help in dynamic re-configuration of Tx-RX Bandwidth to/from USRP.

USRP source/sink blocks already generates a tag on sampling-rate change .

Thanks,

   Adeel

On Mon, Jun 17, 2013 at 8:40 AM, Josh Blum <address@hidden> wrote:

On 06/16/2013 10:44 PM, Josh Blum wrote:
>
>
> On 06/16/2013 02:13 PM, Adeel Anwar wrote:
>>> so i checked the new grextras wiki it has uhd_control block i guess that
>> can be used for this job.
>> uhd_control block  supports only a subset of usrp-functions (exposed
>> through gr-uhd) e.g. "set_command_time", set/get_gain/freq etc BUT
>> currently it doesn't support "set_time_now()"
>> https://github.com/guruofquality/grextras/blob/master/lib/uhd_control_port.cpp
>>
>
> I didnt add every possible setting. But I am happy to add more on
> request! I'm gathering that someone would like to make a configuration
> and control block that could perform the synchronization tasks w/ a
> GPSDO or some external clock and time source.
>

OK, exposed access to time source, clock source, and time registers. Use
it in good health!

https://github.com/guruofquality/grextras/commit/341f351159961acc0bb6e46402e9ed28d618cd64

-josh

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