Re: [Discuss-gnuradio] Plotting Data Received by USRP

[Tom Rondeau]

On Sun, Jul 24, 2011 at 11:57 PM, valentac <address@hidden> wrote:

That's what i'm doing now. The vector_source i'm using is correctly updating
itself if I check the value, but it seems that the updated vector_source
isn't being passed to the plotter_sink (when I connect the source to the
plotter sink).

Josh suggested the use of message source/sink, not the vector source/sinks that you are currently using. Two different things. The vector source and sink are meant more for testing and debugging while the message source and sink are designed to handle exactly your situation in a running program.

Look through the benchmark_rx code we have. The framer at the end of the receive chain is a message sink, actually, and we get the messages in a callback function in the Python world. You would have to set up a message source to listen for the messages and process them farther from there.

Tom

 

Josh Blum-2 wrote:
>
>
>> to verify the payload. I've tried to use a vector_source and append the
>> data
>> to it every time a correct packet is received and then attach that source
>> to
>> my plot sink, but this does not work. The vector is correctly modified,
>> but
>> this data is not passed to the plot. There's also the problem then of
>> only
>> updating when the packet is received.
>>
>
> The message source and message sink blocks are great ways to get data
> into and out-of a stream. -josh
>
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