Hi:
I missed one thing. If I copy the gr-howto-write-a-block 3.3.0 folder to
my gnuradio folder,then after
./bootstrap, ./configure ,make, make check ,make install, the block
how.square_ff() and how.square2_ff()
can work well in my test code.Why? I just use the
create-gnuradio-out-of-tree-project command to change the
name of the new package,and other things are same.Why the block of this package
can work?
From: tianxia...@hotmail.com
To: discuss-gnuradio@gnu.org
Date: Mon, 18 Apr 2011 16:20:13 +0800
Subject: Re: [Discuss-gnuradio] segmentation fault when using a new added block
Hi all:
I have already figured out my problem I mentioned in my last e-mail. That
is because I installed two
versions of GNU Radio in my computer.So I get the error "segmentation
fault".But there is another question.
After I uninstalled one version of GnuRadio (now i use gnuradio3.3.0),I use the
create-gnuradio-out-of-tree-project
command to add a new package which named test.And I did not change the block in
the package,so they still
were test.square_ff() and test.square2_ff().When I run the test code which is a
simple python code,I got this error:
AttributeError: 'module' object has no attribute 'square_ff'.So how can I do to
figure out this problem?I hope someone
can tell me .Thanks in advance.
inter
From: tianxia...@hotmail.com
To: discuss-gnuradio@gnu.org
Date: Thu, 14 Apr 2011 16:09:01 +0800
Subject: [Discuss-gnuradio] segmentation fault when using a new added block
hi all:
I want to use the gr-howto-write-a-block-3.3.0 (my version of the Gnuradio
is 3.3.0)to add a new package
or a new block to the gnuradio and grc. At first I did not change anything in
the gr-howto-write-a-block-3.3.0,
so the name of the new package should be howto,and the name of the block should
be howto.square_ff() and
howto.square2_ff().I run the follow command as follow:
sudo ./bootstrap
sudo ./configure --prefix=/usr/local
sudo make
sudo make check
sudo make install
After all commands done,everything seems fine (no error appear after make
check)and the package looks like been installed.
Then I write a small python program to test the new block.Here are the codes:
#! /usr/bin/env python
from gnuradio import gr
import howto
class example_block(gr.top_block):
def __init__(self):
gr.top_block.__init__(self)
src = gr.vector_source_f((2,-2,1),
True)
thr = gr.throttle(gr.sizeof_float,
32000)
sqr =howto.square_ff()
dst = gr.file_sink(gr.sizeof_float,
"/home/tianxia515/result.dat")
self.connect(src,thr)
self.connect(thr,sqr)
self.connect(sqr,dst)
if __name__ == '__main__':
tb = example_block()
tb.run()
But when I run the program in the shell, there is error "segmentation fault".I
do not know why does this error happen.
I did not change anything in the gr-howto-write-a-block-3.3.0. I hope someone
can help me to fix this problem and
tell me why this error happen.
Thanks in advance.
inter.
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