Jul-24-2019, 04:09 PM
I am trying to control the frequency sampling rate of my dial_tone python code through a AJAX for to flask server. The problem is when I start running the program and start sliding/dragging the round slider to change the freq samp value it doesn't have any impact! It doesn't run the 'tone' sound. And once I cancel the process on the Terminal (ctrl + c) the program will operate and I start hearing the tone! Any help to solve this problem will be highly appreciated.
This is the Python code:
This is the Python code:
#!/usr/bin/env python2
# -*- coding: utf-8 -*-
##################################################
# GNU Radio Python Flow Graph
# Title: Top Block 22
# Generated: Tue Jul 23 15:54:16 2019
##################################################
from gnuradio import analog
from gnuradio import audio
from gnuradio import blocks
from gnuradio import eng_notation
from gnuradio import gr
from gnuradio.eng_option import eng_option
from gnuradio.filter import firdes
from optparse import OptionParser
from flask import Flask, render_template, jsonify, request, redirect, url_for
from random import randint
app = Flask(__name__)
class top_block_22(gr.top_block):
def __init__(self):
gr.top_block.__init__(self, "Top Block 22")
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 32000
##################################################
# Blocks
##################################################
self.blocks_add_xx = blocks.add_vff(1)
self.audio_sink = audio.sink(32000, '', True)
self.analog_sig_source_x_1 = analog.sig_source_f(samp_rate, analog.GR_COS_WAVE, 440, 0.4, 0)
self.analog_sig_source_x_0 = analog.sig_source_f(samp_rate, analog.GR_COS_WAVE, 350, 0.4, 0)
self.analog_noise_source_x_0 = analog.noise_source_f(analog.GR_GAUSSIAN, 0.005, -42)
##################################################
# Connections
##################################################
self.connect((self.analog_noise_source_x_0, 0), (self.blocks_add_xx, 2))
self.connect((self.analog_sig_source_x_0, 0), (self.blocks_add_xx, 0))
self.connect((self.analog_sig_source_x_1, 0), (self.blocks_add_xx, 1))
self.connect((self.blocks_add_xx, 0), (self.audio_sink, 0))
@app.route('/')
def hex_color():
return render_template("index.html")
@app.route('/valueofslider')
def slide():
samp_rate = request.args.get('samp_rate')
print(samp_rate)
return samp_rate
def main(top_block_cls=top_block_22, options=None):
tb = top_block_cls()
tb.start()
try:
raw_input('Press Enter to quit: ')
except EOFError:
pass
tb.stop()
tb.wait()
if __name__ == '__main__':
app.run(debug=True)
if __name__ == '__main__':
main()
The html code is:
Python Code: (Double-click to select all)The html code is:<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>jQuery roundSlider - JS Bin</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/roundSlider/1.3.2/roundslider.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/roundSlider/1.3.2/roundslider.min.js"></script>
</head>
<body>
<!-- Only html needed -->
<div id="slider"></div>
<script>
var val;
$("#slider").roundSlider({
radius: 215,
min: 0,
max: 40000,
change: function () {
var obj1 = $("#slider").data("roundSlider");
val = obj1.getValue();
value: 1
$.getJSON('/valueofslider', {
samp_rate: val
});
}
});
</script>
</body>