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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