Difference between revisions of "Selector"

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(Parameters)
(Example Flowgraph)
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== Example Flowgraph ==
 
== Example Flowgraph ==
  
Insert description of flowgraph here, then show a screenshot of the flowgraph and the output if there is an interesting GUICurrently we have no standard method of uploading the actual flowgraph to the wiki or git repo, unfortunatelyThe plan is to have an example flowgraph showing how the block might be used, for every block, and the flowgraphs will live in the git repo.
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This example flowgraph is located in the GNU Radio examples under src/gnuradio/gr-blocks/examples/selector.grc
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[[File:Selector_example_flowgraph.png]]
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In this example, there are three input signals, which can be directed by the parameters of the selector block to one of two of the output ports.  In the case where the input is set to 0 and the output is set to 0, we get the cosine signal passing from input 0 to Output 0In this case Output 1 produces no samples.
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[[File:Selector_output_1.png]]
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If we change the output index to 1, and the input index to 1, we see the triangle wave produced at output 1Output 0 in this case is producing no output samples, but the QT GUI Time sink does not update the display.
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[[File:Selector_output_2.png]]
  
 
== Source Files ==
 
== Source Files ==

Revision as of 16:46, 21 October 2019

Connect the sink at input index to the source at output index. Samples from other input ports are consumed and dumped. Other output ports produce no samples.

output[output_index][i] = input[input_index][i]

Parameters

(R): Run-time adjustable

Enabled (R)
Whether or not input gets copied to output.
NOTE: Selector block prior to GR 3.8 does not have Enabled parameter
Number of Inputs
Number of input streams
Number of Outputs
Number of output streams
Input Index (R)
Used to choose which input stream gets used. It is typical for this to be changed in realtime using e.g. a QT GUI Chooser
Output Index (R)
Used to choose which output stream gets the input copied to it. It is typical for this to be changed in realtime using e.g. a QT GUI Chooser

Example Flowgraph

This example flowgraph is located in the GNU Radio examples under src/gnuradio/gr-blocks/examples/selector.grc

Selector example flowgraph.png

In this example, there are three input signals, which can be directed by the parameters of the selector block to one of two of the output ports. In the case where the input is set to 0 and the output is set to 0, we get the cosine signal passing from input 0 to Output 0. In this case Output 1 produces no samples.


Selector output 1.png

If we change the output index to 1, and the input index to 1, we see the triangle wave produced at output 1. Output 0 in this case is producing no output samples, but the QT GUI Time sink does not update the display.

Selector output 2.png

Source Files

C++ files
TODO
Header files
TODO
Public header files
TODO
Block definition
TODO