Hi list,
I'm trying to write a block in python.
What I want to do is create a block that passes the signal through some well
know blocks (such as FFT), do its processing and output the signal.
Basically, what I did so far is:
#####
class energy_detector(gr.hier_block2):
class energy_calculator(gr.sync_block):
""" Nested class
"""
def __init__(self, fft_size):
gr.sync_block.__init__(
self,
name = "energy_detector",
in_sig = [np.dtype((np.float32,
fft_size))],
out_sig = [np.float32]
)
def work(self, input_items, output_items):
""" Work here
"""
return len(out)
"""
Main block
"""
def __init__(self, fft_size):
"""
Constructor
"""
""" Initialize our energy detector block
in_sig: vector of fft_size elements
out_sig: one float for each input vector
"""
gr.hier_block2.__init__(
self,
name = "energy_detector",
in_sig = [np.dtype((np.float32, fft_size))],
out_sig = [np.float32]
)
#
# Blocks
#
self.fft = fft. fft_vcc(fft_size, True, [], False)
self.v2s = gr.vector_to_stream(gr.sizeof_gr_complex, fft_size)
self.c2f = gr.complex_to_float()
self.s2v = gr.stream_to_vector(gr.sizeof_float, fft_size)
self.ec = self.energy_calculator(fft_size)
# Flow graph
self.connect(self, self.fft, self.v2s, self.c2f, self.s2v,
self.ec, self)
########
But it does not work. What can I do to achieve the result I need ?
Thanks
--
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