我有一个烧瓶Web服务器中托管的gnuradio python代码。该程序由许多产生信号或噪声的块/源组成...该程序可以正常工作，直到我向其中添加了一些代码并开始了标题中提到的错误。之所以添加新的代码行，是因为最初我的程序一旦运行，则所有信号源和噪声源将同时工作。但是我想控制一个源是打开的，哪个源是关闭的。因此，在有关编码的基础非常薄弱的基础上，再加上有价值的成员的一些建议，我尽力了，并在python区域内编写了连接线，然后在JS中添加了带有函数的按钮，并写了一些我认为可以称为在烧瓶中起作用。
现在我运行全部代码时，出现ValueError: At least two endpoints required for disconnect错误。
说实话，我不确定我添加的行是否有助于实现我的目标。
因此，我发布此线程是希望你们能引导我解决问题。
程序代码：
from __future__ import print_function
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
class TopBlock22(gr.top_block): # PEP8: CamelCaseName for classes
def __init__(self, sample_rate=32000, amplitude=400, frequency=350):
gr.top_block.__init__(self, "Top Block 22")
##################################################
# Variables
##################################################
self.sample_rate = sample_rate
print('[TopBlock22] __init__: sample_rate:', self.sample_rate)
self.amplitude = amplitude
print('[TopBlock22] __init__: amplitude:', self.amplitude)
self.frequency = frequency
print('[TopBlock22] __init__: frequency:', self.frequency)
self.analog_sig_source_x_0 = analog_sig_source_x_0 = False
self.analog_noise_source_x_0 = analog_noise_source_x_0 = False
if self.analog_sig_source_x_0:
self.connect(analog_sig_source_x_0)
else:
self.disconnect(analog_sig_source_x_0)
if self.analog_noise_source_x_0:
self.connect(analog_noise_source_x_0)
else:
self.disconnect(analog_noise_source_x_0)
##################################################
# 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(sample_rate, analog.GR_COS_WAVE, 440, amplitude, 0)
self.analog_sig_source_x_0 = analog.sig_source_f(sample_rate, analog.GR_COS_WAVE, 350, amplitude, 0)
self.analog_noise_source_x_0 = analog.noise_source_f(analog.GR_GAUSSIAN, amplitude, -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))
def change_sample_rate(self, value=None):
if value is not None:
self.sample_rate = value
print('[TopBlock22] change: sample_rate:', value)
self.analog_sig_source_x_1.set_sampling_freq(value)
self.analog_sig_source_x_0.set_sampling_freq(value)
def change_amplitude(self, value=None):
if value is not None:
value /= 10000.
self.amplitude = value
print('[TopBlock22] change: amplitude:', value)
self.analog_sig_source_x_1.set_amplitude(value)
self.analog_sig_source_x_0.set_amplitude(value)
self.analog_noise_source_x_0.set_amplitude(value)
def change_frequency(self, value=None):
if value is not None:
self.frequency = value
print('[TopBlock22] change: frequency:', value)
#TODO: change some values
def change(self, sample_rate=None, amplitude=None, frequency=None):
if sample_rate is not None:
self.change_sample_rate(sample_rate)
if amplitude is not None:
self.change_amplitude(amplitude)
if frequency is not None:
self.change_frequency(frequency)
def turn_off(self):
self.change(0, 0, 0, False, False)
# -----------------------------------------------------------------------------
from flask import Flask, request, jsonify
app = Flask(__name__)
tb = TopBlock22(0, 0, 0)
tb.start()
@app.route('/')
def index():
return '''<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>GNURadio Slider Example</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>
<style>
.slider {
position: absolute;
align:center;
}
.row1 {top:100px;}
.row2 {top:450px;}
.col1 {left:75px;}
.col2 {left:470px;}
.col3 {left:870px;}
</style>
</head>
<body>
<div id="slider1" class='slider row1 col1'></div>
<!-- <p>Sample Rate Slider</p> -->
<div id="slider2" class='slider row1 col2'></div>
<!-- <p>Amplitude Slider2</p> -->
<div id="slider3" class='slider row1 col3'></div>
<!-- <p>Frequency Slider3</p> -->
<div id="slider4" class='slider row2 col1'></div>
<!-- <p>Slider4</p> -->
<div id="slider5" class='slider row2 col2'></div>
<!-- <p>Slider5</p> -->
<div id="slider6" class='slider row2 col3'></div>
<!-- <p>Slider6</p> -->
<button id="turn_on_button1">Turn On Signal Source</button>
<button id="turn_on_button2">TURN On Noise Source</button>
<script>
// create sliders
$("#slider1").roundSlider({
radius: 150,
min: 0,
max: 10000,
value: 0, // default value at start
//change: function(event) { $.getJSON('/valueofslider', {slide1_val: event.value}); }
change: function(event) { $.getJSON('/set_sample_rate/' + event.value); }
});
$("#slider2").roundSlider({
radius: 150,
min: 0,
max: 10000,
value: 0, // default value at start
//change: function(event) { $.getJSON('/valueofslider', {slide2_val: event.value}); }
change: function(event) { $.getJSON('/set_amplitude/' + event.value); }
});
$("#slider3").roundSlider({
radius: 150,
min: 0,
max: 10000000000,
value: 0, // default value at start
//change: function(event) { $.getJSON('/valueofslider', {slide3_val: event.value}); }
change: function(event) { $.getJSON('/set_frequency/' + event.value); }
});
$("#slider4").roundSlider({
radius: 150,
min: 0,
max: 10000000000,
value: 0, // default value at start
change: function(event) { $.getJSON('/valueofslider', {slide4_val: event.value}); }
});
$("#slider5").roundSlider({
radius: 150,
min: 0,
max: 10000000000,
value: 0, // default value at start
change: function(event) { $.getJSON('/valueofslider', {slide5_val: event.value}); }
});
$("#slider6").roundSlider({
radius: 150,
min: 0,
max: 10000000000,
value: 0, // default value at start
change: function (event) { $.getJSON('/valueofslider', {slide6_val: event.value}); }
});
$("#enable_button1").click(function(){
$("#turn_on_button1").data("Sources_Control").setAnalog_sig_source_x_0(False);
// send to server
$.getJSON('/Sources_Control', {
analog_sig_source_x_0 = True,
});
$("#enable_button2").click(function(){
$("#turn_on_button2").data("Sources_Control").setAnalog_noise_source_x_0(False);
// send to server
$.getJSON('/Sources_Control', {
analog_noise_source: True,
});
});
</script>
</body>
</html>'''
@app.route('/off')
def off():
tb.turn_off()
return 'off'
@app.route('/set_sample_rate/<int:value>')
def set_sample_rate(value):
tb.change_sample_rate(value)
return str(value)
@app.route('/set_amplitude/<int:value>')
def set_amplitude(value):
tb.change_amplitude(value)
return str(value)
@app.route('/set_frequency/<int:value>')
def set_frequency(value):
tb.change_frequency(value)
return str(value)
@app.route('/valueofslider')
def slide():
sample_rate = request.args.get('slide1_val', None)
amplitude = request.args.get('slide2_val', None)
frequency = request.args.get('slide3_val', None)
sound(
sample_rate=sample_rate,
amplitude=amplitude,
frequency=frequency,
)
return 'sample_rate: {}, amplitude: {}, frequency : {}'.format(sample_rate, amplitude, frequency )
@app.route('/Sources_Control')
def sources():
if enable_button1 == True:
analog_noise_source_x_0 = self.connect(analog_sig_source_x_0)
print("signal source is connected")
if enable_button2 == True:
analog_noise_source_x_0 = self.connect(analog_noise_source_x_0)
print("analog noise source is connected")
def sound(sample_rate=None, amplitude=None, frequency=None):
"""version which uses `change()`"""
if sample_rate is not None:
sample_rate = int(sample_rate)
tb.change_sample_rate(sample_rate)
if amplitude is not None:
amplitude = int(amplitude)
tb.change_amplitude(amplitude)
if frequency is not None:
frequency = int(frequency )
tb.change_frequency(frequency )
print('[sound] sample_rate:', sample_rate)
print('[sound] amplitude:', amplitude)
print('[sound] frequency:', frequency)
if __name__ == '__main__':
app.run(host='0.0.0.0', debug=True)
错误回溯：
[TopBlock22] __init__: sample_rate: 0
[TopBlock22] __init__: amplitude: 0
[TopBlock22] __init__: frequency: 0
Traceback (most recent call last):
File "/home/fit-pc/Desktop/calling function practice/app-D.py", line 111, in <module>
tb = TopBlock22(0, 0, 0)
File "/home/fit-pc/Desktop/calling function practice/app-D.py", line 40, in __init__
self.disconnect(analog_sig_source_x_0)
File "/usr/lib/python2.7/dist-packages/gnuradio/gr/hier_block2.py", line 37, in wrapped
raise ValueError("At least two endpoints required for " + func.__name__)
ValueError: At least two endpoints required for disconnect
[Finished in 0.7s with exit code 1]
[shell_cmd: python -u "/home/fit-pc/Desktop/calling function practice/app-D.py"]
[dir: /home/fit-pc/Desktop/calling function practice]
[path: /home/fit-pc/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin]
错误位置：
至于新添加的代码行是：
此处：
在那里：
更新：
我对代码的连接/断开线做了一些更改，如下所示，然后开始出现另一个错误：
self.analog_sig_source_x_0 = analog_sig_source_x_0 = False
self.analog_noise_source_x_0 = analog_noise_source_x_0 = False
self.blocks_add_xx = blocks_add_xx = True
self.blocks_add_xx = blocks_add_xx = True
if self.analog_sig_source_x_0 == True:
self.connect((self.analog_sig_source_x_0, 0), (self.blocks_add_xx, 0))
else:
self.disconnect((self.analog_sig_source_x_0, 0), (self.blocks_add_xx, 0))
if self.analog_noise_source_x_0 == True:
self.connect((self.analog_noise_source_x_0, 0), (self.blocks_add_xx, 1))
else:
self.disconnect((self.analog_noise_source_x_0, 0), (self.blocks_add_xx, 1))
##################################################
# Blocks
##################################################
self.blocks_add_xx = blocks.add_vff(1)
self.audio_sink = audio.sink(32000, '', True)
self.analog_sig_source_x_0 = analog.sig_source_f(sample_rate, analog.GR_COS_WAVE, 350, amplitude, 0)
self.analog_noise_source_x_0 = analog.noise_source_f(analog.GR_GAUSSIAN, amplitude, -42)
##################################################
# Connections
##################################################
self.connect((self.analog_noise_source_x_0, 0), (self.blocks_add_xx, 1))
self.connect((self.analog_sig_source_x_0, 0), (self.blocks_add_xx, 0))
self.connect((self.blocks_add_xx, 0), (self.audio_sink, 0))
新错误为ValueError: Unable to coerce endpoints: 'bool' object has no attribute 'to_basic_block'：
[TopBlock22] __init__: sample_rate: 0
[TopBlock22] __init__: amplitude: 0
[TopBlock22] __init__: frequency: 0
Traceback (most recent call last):
File "/home/fit-pc/Desktop/calling function practice/app-D.py", line 113, in <module>
tb = TopBlock22(0, 0, 0)
File "/home/fit-pc/Desktop/calling function practice/app-D.py", line 44, in __init__
self.disconnect((self.analog_sig_source_x_0, 0), (self.blocks_add_xx, 0))
File "/usr/lib/python2.7/dist-packages/gnuradio/gr/hier_block2.py", line 44, in wrapped
raise ValueError("Unable to coerce endpoints: " + str(err))
ValueError: Unable to coerce endpoints: 'bool' object has no attribute 'to_basic_block'
[Finished in 0.7s with exit code 1]
[shell_cmd: python -u "/home/fit-pc/Desktop/calling function practice/app-D.py"]
[dir: /home/fit-pc/Desktop/calling function practice]
[path: /home/fit-pc/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin]
新错误的地方：
