[USRP-users] Different streaming modes at the same time with same USRP hardware

Michael West michael.west at ettus.com
Sat Jul 1 12:36:15 EDT 2017


Hi Felipe,

Both the multi_usrp API and the RFNoC API support it.  And yes, you need to
create two different stream objects.

Regards,
Michael

On Sat, Jul 1, 2017 at 2:45 AM, Felipe Augusto Pereira de Figueiredo <
zz4fap at gmail.com> wrote:

> Dear Michael,
>
> Some more questions follows inline.
>
> Thanks and Kind Regards,
>
> Felipe Augusto
>
> On Sat, Jul 1, 2017 at 2:16 AM, Michael West <michael.west at ettus.com>
> wrote:
>
>> Hi Felipe,
>>
>> 1)  Yes, that is supported.
>>
>
> When you say that is supported, do you mean with legacy UHD API or with
> RFNoC one? Even though I have a x310 I'm still using the legacy API.
>
>>
>> 2)  There is no example, but it is pretty easy.  Just set the
>> uhd::stream_args_t::channels value correctly for each streamer object.
>>
>
> Do I need to create two different stream objects?
>
>>
>> Regards,
>> Michael
>>
>> On Fri, Jun 30, 2017 at 12:00 PM, Felipe Augusto Pereira de Figueiredo <
>> zz4fap at gmail.com> wrote:
>>
>>> Dear Michael,
>>>
>>> Thanks for the reply.
>>>
>>> Given your answer, I've got two additional questions:
>>>
>>> 1) Does it mean I can create a RX stream to read RXed samples from the
>>> RF chain 0 (I think you call DSP0) and another RX stream to read samples
>>> from RF chain 1 (DSP1)? I'd like to have a SISO physical layer running
>>> (TX/RX) on the RF chain 0 at frequency X and sample rate Y and a spectrum
>>> sensing module with different sampling rate Z at frequency W on the RF
>>> chain 1.
>>>
>>> 2) Is there any example on how to create different streamers to
>>> receive/transmit using different RF Chains?
>>>
>>> Many Thanks and Kind Regards,
>>>
>>> Felipe Augusto
>>>
>>> On Fri, Jun 30, 2017 at 8:32 PM, Michael West <michael.west at ettus.com>
>>> wrote:
>>>
>>>> Hi Felipe,
>>>>
>>>> Yes.  If you create different streamers, each with a different set of
>>>> channels, each streamer can be configured independently.
>>>>
>>>> Regards,
>>>> Michael
>>>>
>>>> On Tue, Jun 27, 2017 at 7:28 AM, Felipe Augusto Pereira de Figueiredo
>>>> via USRP-users <usrp-users at lists.ettus.com> wrote:
>>>>
>>>>> Dear folks,
>>>>>
>>>>> I've got a x310 and I'd like to know if it is possible to open two
>>>>> streams with different streaming modes at the same time in the same USRP
>>>>> hardware.
>>>>>
>>>>> For example, the first RF chain would be configures as
>>>>>
>>>>> *UHD_STREAM_MODE_START_CONTINUOUS*
>>>>>
>>>>> and the second one would be set to
>>>>>
>>>>> *UHD_STREAM_MODE_NUM_SAMPS_AND_DONE*
>>>>>
>>>>> Is is possible?
>>>>>
>>>>> Thanks and Kind regards,
>>>>>
>>>>> Felipe Augusto
>>>>>
>>>>> _______________________________________________
>>>>> USRP-users mailing list
>>>>> USRP-users at lists.ettus.com
>>>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>>>>>
>>>>>
>>>>
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/attachments/20170701/06e07f08/attachment-0002.html>


More information about the USRP-users mailing list