Re: [Discuss-gnuradio] Dynamically changing parameters of a block

[Josh Blum]

http://gnuradio.org/doc/doxygen/classgr__multiply__const__ff.html

The block has a method called set_k

just do my_block.set_k(new_constant)

-Josh

Karthik Vijayraghavan wrote:
> Suppose I have myblock = gr.multiply_const_ff(var_value) sitting
> somewhere in my flowgraph. I want the user to be able to change the
> value of var_value by using a slider. I know how to make a slider, but
> I am not able to find information on how to dynamically change the
> block at runtime. One option that I can think of is to
>
> 1. Stop the flow graph
> 2. Disconnect the block in question with any block it may be connected to
> 3. Redefine the block with new parameters
> 4. Reconnect the block
> 5. Restart the flow graph
>
> I tried the above method, but I did know how to redefine an existing
> block. Do I have to somehow "destroy" or "clear" the existing block
> before defining another block with the same name?
>
> Karthik
>
>
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