By the way, the rx_samples_to_file.cpp example has a "multi_streamer"
command line option and the example has associated functionality to
implement separate streamers in the Rx direction. But, I don't think the tx
examples have this option although it should be roughly analogous to the Rx
case.
Rob
On Fri, May 12, 2023 at 12:03 PM Rob Kossler <rkoss...@nd.edu> wrote:
> Hi David,
> You need to create two streamers - one with a channel list of {0} and the
> other with a channel list of {1}. Let me know if you have any questions.
> Rob
>
> On Fri, May 12, 2023 at 11:52 AM <david.fernan...@viveris.fr> wrote:
>
>> Hi everyone,
>>
>> I need to develop a system which streams independent samples at different
>> moments to the differents channels (channel 0 and channel 1) of an USRP
>> X310.
>>
>> To achieve that, I use the example codes available in the documentation
>> which look like the following :
>>
>> // 1. Create the stream args object and initialize the data formats to
>> fc32 and sc16:
>> uhd::stream_args_t stream_args("fc32", "sc16");
>> // 2. Set the channel list, we want 2 streamers coming from channels 0
>> and 1, in that order
>> stream_args.channels = {0, 1};
>> // Now use these args to create a tx streamer (We assume that usrp is a
>> valid uhd::usrp::multi_usrp)
>> uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);
>> // Now, any calls to rx_stream must provide a vector of 2 buffers, one
>> per channel.
>> // Ex: tx_stream->send(buffs, 1024, md); (assuming buffs is a vector of 2
>> buffers)
>>
>> Then, I have created 2 threads, each thread will call the
>> “tx_stream->send” function at different moments to stream samples through
>> its corresponding channel (thread0 ==> channel0 and thread1 ==> channel1).
>>
>> My question is : how can I call the “tx_stream->send” function in each
>> thread to send samples through only 1 of the channels ? Is there any other
>> better method to achieve that ?
>>
>> Thank you very much for your support.
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>>
>
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