On Sat, Mar 8, 2008 at 11:20 PM, Manav Rohil <[EMAIL PROTECTED]> wrote:
>
> I am getting segmentation fault with the following...
>
> src_data = (0xff,)
> src = gr.vector_source_b(src_data,False)
> #expected_results = (1,0,0,0,0,0,0,0)
> op = gr.packed_to_unpacked_bb(1, gr.GR_MSB_FIRST)
> op1= gr.head (gr.sizeof_char, 1)
> tb.connect(src,op,op1)
> dst = gr.vector_sink_b()
> tb.connect(op,dst)
> tb.connect(op,
> gr.file_sink(gr.sizeof_char,
> "tx_bytes2chunks.dat"))
> tb.connect(op1,
> gr.file_sink(gr.sizeof_char, "tx_bytes2bits.dat"))
>
> All that i m trying to do is extract the 1st bit of the vector.
> Need help urgently.Am new to GNU radio
> --
> Posted via http://www.ruby-forum.com/.
>
>
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>
This works for me (note the "del tb" line):
from gnuradio import gr
def print_data(d):
"""Debugging tool"""
print 'Byte\tDec\tHex'
for i in range(len(d)):
b = ord(d[i])
print '%4d\t%3d\t %02X' % (i, b, b)
class MyTopBlock(gr.top_block):
def __init__(self):
gr.top_block.__init__(self)
src_data = (0xff,)
src = gr.vector_source_b(src_data,False)
op = gr.packed_to_unpacked_bb(1, gr.GR_MSB_FIRST)
op1= gr.head (gr.sizeof_char, 1)
self.connect(src,op,op1)
dst = gr.vector_sink_b()
self.connect(op,dst)
self.connect(op, gr.file_sink(gr.sizeof_char,"tx_bytes2chunks.dat"))
self.connect(op1, gr.file_sink(gr.sizeof_char, "tx_bytes2bits.dat"))
def main():
tb = MyTopBlock()
tb.run()
del tb #this makes sure files are flushed
f = open("tx_bytes2chunks.dat")
print_data(f.read())
f.close()
f = open("tx_bytes2bits.dat")
print_data(f.read())
f.close()
if __name__ == '__main__':
main()
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