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

Felipe Augusto Pereira de Figueiredo zz4fap at gmail.com
Sat Jul 1 05:45:05 EDT 2017


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
>>>>
>>>>
>>>
>>
>
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