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# -*- coding: utf-8 -*-
#
# SPDX-License-Identifier: GPL-3.0
#
# GNU Radio Python Flow Graph
# Title: RMS AGC
# Author: Daniel Estevez
# Description: AGC using RMS
# GNU Radio version: 3.8.0.0
from gnuradio import blocks
from gnuradio import gr
from gnuradio.filter import firdes
class rms_agc(gr.hier_block2):
def __init__(self, alpha=1e-2, reference=0.5):
gr.hier_block2.__init__(
self,
'RMS AGC',
gr.io_signature(1, 1, gr.sizeof_gr_complex*1),
gr.io_signature(1, 1, gr.sizeof_gr_complex*1),
)
##################################################
# Parameters
##################################################
self.alpha = alpha
self.reference = reference
##################################################
# Blocks
##################################################
self.blocks_rms_xx_0 = blocks.rms_cf(alpha)
self.blocks_multiply_const_vxx_0 = (
blocks.multiply_const_ff(1.0/reference))
self.blocks_float_to_complex_0 = blocks.float_to_complex(1)
self.blocks_divide_xx_0 = blocks.divide_cc(1)
self.blocks_add_const_vxx_0 = blocks.add_const_ff(1e-19)
##################################################
# Connections
##################################################
self.connect(
(self.blocks_add_const_vxx_0, 0),
(self.blocks_float_to_complex_0, 0))
self.connect((self.blocks_divide_xx_0, 0), (self, 0))
self.connect(
(self.blocks_float_to_complex_0, 0),
(self.blocks_divide_xx_0, 1))
self.connect(
(self.blocks_multiply_const_vxx_0, 0),
(self.blocks_add_const_vxx_0, 0))
self.connect(
(self.blocks_rms_xx_0, 0),
(self.blocks_multiply_const_vxx_0, 0))
self.connect((self, 0), (self.blocks_divide_xx_0, 0))
self.connect((self, 0), (self.blocks_rms_xx_0, 0))
def get_alpha(self):
return self.alpha
def set_alpha(self, alpha):
self.alpha = alpha
self.blocks_rms_xx_0.set_alpha(self.alpha)
def get_reference(self):
return self.reference
def set_reference(self, reference):
self.reference = reference
self.blocks_multiply_const_vxx_0.set_k(1.0/self.reference)
|
