I am trying to make a custo wave through an OOT python module. I am very
new to DSP and GNU Radio. I decided to replicate the Sine wave from Signal
source block. I seem to get no output. My code is as follows:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright 2024 sourya.
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
import numpy as np
from gnuradio import gr
class sine(gr.sync_block):
"""
docstring for block sine
"""
def __init__(self, sample_rate, duration=1000, freq=0, phase=0):
gr.sync_block.__init__(self,
name="sine",
in_sig=None,
out_sig=[np.float32, ])
self.sample_rate = sample_rate
self.duration = duration
self.freq = 0
self.phase = 0
def work(self, input_items, output_items):
#out = output_items[0]
t = np.arange(0, len(output_items[0]),
len(output_items[0])/self.sample_rate)
s = np.sin(2*np.pi*self.freq*t + self.phase)
self.phase += 2 * np.pi * self.freq / self.sample_rate
# <+signal processing here+>
output_items[0][:] = s
return len(output_items[0])
Last time I made some mistakes which I have corrected in this code. I am
not sure about what the phase part will be and what value it will be
updated to. Also, detailed help about this will really be appreciated since
I am very new to this field and Mailing lists doesnt simply allow to get
back to the solution provider in form of a reply like a forum does.