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"""
Embedded Python Blocks:
Each time this file is saved, GRC will instantiate the first class it finds
to get ports and parameters of your block. The arguments to __init__ will
be the parameters. All of them are required to have default values!
"""
import numpy as np
from gnuradio import gr
class blk(gr.sync_block): # other base classes are basic_block, decim_block, interp_block
"""Embedded Python Block example - a simple multiply const"""
def __init__(self, amplitudes=[], delays=[]): # only default arguments here
"""arguments to this function show up as parameters in GRC"""
gr.sync_block.__init__(
self,
name='Embedded Python Block', # will show up in GRC
in_sig=[np.complex64],
out_sig=[np.complex64]
)
# if an attribute with the same name as a parameter is found,
# a callback is registered (properties work, too).
self.amplitues = amplitudes
self.delays = delays
#self.fir =
def work(self, input_items, output_items):
"""example: multiply with constant"""
inp = input_items[0]
oup = output_items[0]
amplitudes = [0.2, 0.5 ,0.8]
delays = [3,5,2]
i = len(amplitudes)
outp[:] = [([1]+[0 for n in range (0,delays[i])]+[amplitudes[i]]) for i in range(0,i)]
return len(output_items[0])
if __name__ == '__main__':
ampl = [0.2, 0.5 ,0.8]
delays = [3,5,2]
i = len(ampl)
[([1]+[0 for n in range (0,delays[i])]+[ampl[i]]) for i in range(0,i)]
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