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[Discuss-gnuradio] declare_sample_delay cannot handle large delay?

From: Liyang Zhang
Subject: [Discuss-gnuradio] declare_sample_delay cannot handle large delay?
Date: Mon, 14 Mar 2016 17:00:25 -0400

Hi all,

I am playing with gnuradio and USRP but find something “weird”.
I am using a custom block with history samples. Since delay on stream tags is 
introduced, I use declare_sample_delay to offset it. So in the constructor of 
my custom block it is like:

In experiments I found that it works well when hist_len is small. But if I set 
it to a rather large value (e.g., 1000), the output just lose all the tags the 
block is supposed to pass.
So I presume the scheduler cannot handle large delay?


Liyang Zhang
PhD Candidate
Department of Electrical and Computer Engineering
Northeastern University
Email: address@hidden

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