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Re: [Discuss-gnuradio] Updating variable by passing message

From: Brian
Subject: Re: [Discuss-gnuradio] Updating variable by passing message
Date: Sat, 12 Aug 2017 11:04:00 +0100


That's good question and I'm working on a project that requires me to do similar but mine is frequency.

I believe that once a code is run and your receiver is running that changing a variable is not possible.

However I have a workaround, I am using a file as a source which will be either blank (so no action takes place) or a frequency value, this triggers a reset of python and then reads in the value as a variable.

This works quite well in my case but may not suit all applications.  My receiver only needs to be on when I trigger it from the transmitter, it can't be used if you're looking for a constant FFT plot.

Hope this helps and if there are any suggestions for a more refined solution that would be great.


From: mohammad nejati
Sent: ‎12/‎08/‎2017 10:51
To: address@hidden
Subject: [Discuss-gnuradio] Updating variable by passing message

Hi ,
I want to update taps in "FFT FILTER" block in run time , i have a
block that can send this taps as a message every 1 secound . i write
an python block witch get this message what i want to do is get this
message and update value of a variable block wich is used in FFT
FILTER . but i dont know how i can update a variable block value in
python code , is that possible at all ?

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