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#
# Copyright 2008 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# GNU Radio is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# GNU Radio is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU Radio; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
##################################################
# Imports
##################################################
import plotter
import common
import wx
import numpy
import math
import pubsub
from constants import *
from gnuradio import gr #for gr.prefs
import forms
##################################################
# Constants
##################################################
SLIDER_STEPS = 200
LOOP_BW_MIN_EXP, LOOP_BW_MAX_EXP = -6, 0.0
GAIN_MU_MIN_EXP, GAIN_MU_MAX_EXP = -6, -0.301
DEFAULT_FRAME_RATE = gr.prefs().get_long('wxgui', 'const_rate', 5)
DEFAULT_WIN_SIZE = (500, 400)
DEFAULT_CONST_SIZE = gr.prefs().get_long('wxgui', 'const_size', 2048)
CONST_PLOT_COLOR_SPEC = (0, 0, 1)
MARKER_TYPES = (
('Dot Small', 1.0),
('Dot Medium', 2.0),
('Dot Large', 3.0),
('Line Link', None),
)
DEFAULT_MARKER_TYPE = 2.0
##################################################
# Constellation window control panel
##################################################
class control_panel(wx.Panel):
"""
A control panel with wx widgits to control the plotter.
"""
def __init__(self, parent):
"""
Create a new control panel.
@param parent the wx parent window
"""
self.parent = parent
wx.Panel.__init__(self, parent, style=wx.SUNKEN_BORDER)
parent[SHOW_CONTROL_PANEL_KEY] = True
parent.subscribe(SHOW_CONTROL_PANEL_KEY, self.Show)
control_box = forms.static_box_sizer(
parent=self, label='Options',
bold=True, orient=wx.VERTICAL,
)
#loop_bw
control_box.AddStretchSpacer()
forms.text_box(
sizer=control_box, parent=self, label='Loop Bandwidth',
converter=forms.float_converter(),
ps=parent, key=LOOP_BW_KEY,
)
forms.log_slider(
sizer=control_box, parent=self,
min_exp=LOOP_BW_MIN_EXP,
max_exp=LOOP_BW_MAX_EXP,
num_steps=SLIDER_STEPS,
ps=parent, key=LOOP_BW_KEY,
)
#gain_mu
control_box.AddStretchSpacer()
forms.text_box(
sizer=control_box, parent=self, label='Gain Mu',
converter=forms.float_converter(),
ps=parent, key=GAIN_MU_KEY,
)
forms.log_slider(
sizer=control_box, parent=self,
min_exp=GAIN_MU_MIN_EXP,
max_exp=GAIN_MU_MAX_EXP,
num_steps=SLIDER_STEPS,
ps=parent, key=GAIN_MU_KEY,
)
#marker
control_box.AddStretchSpacer()
forms.drop_down(
sizer=control_box, parent=self,
ps=parent, key=MARKER_KEY, label='Marker',
choices=map(lambda x: x[1], MARKER_TYPES),
labels=map(lambda x: x[0], MARKER_TYPES),
)
#run/stop
control_box.AddStretchSpacer()
forms.toggle_button(
sizer=control_box, parent=self,
true_label='Stop', false_label='Run',
ps=parent, key=RUNNING_KEY,
)
#set sizer
self.SetSizerAndFit(control_box)
##################################################
# Constellation window with plotter and control panel
##################################################
class const_window(wx.Panel, pubsub.pubsub):
def __init__(
self,
parent,
controller,
size,
title,
msg_key,
loop_bw_key,
gain_mu_key,
gain_omega_key,
omega_key,
sample_rate_key,
):
pubsub.pubsub.__init__(self)
#proxy the keys
self.proxy(MSG_KEY, controller, msg_key)
self.proxy(LOOP_BW_KEY, controller, loop_bw_key)
self.proxy(GAIN_MU_KEY, controller, gain_mu_key)
self.proxy(GAIN_OMEGA_KEY, controller, gain_omega_key)
self.proxy(OMEGA_KEY, controller, omega_key)
self.proxy(SAMPLE_RATE_KEY, controller, sample_rate_key)
#initialize values
self[RUNNING_KEY] = True
self[X_DIVS_KEY] = 8
self[Y_DIVS_KEY] = 8
self[MARKER_KEY] = DEFAULT_MARKER_TYPE
#init panel and plot
wx.Panel.__init__(self, parent, style=wx.SIMPLE_BORDER)
self.plotter = plotter.channel_plotter(self)
self.plotter.SetSize(wx.Size(*size))
self.plotter.set_title(title)
self.plotter.set_x_label('Inphase')
self.plotter.set_y_label('Quadrature')
self.plotter.enable_point_label(True)
self.plotter.enable_grid_lines(True)
#setup the box with plot and controls
self.control_panel = control_panel(self)
main_box = wx.BoxSizer(wx.HORIZONTAL)
main_box.Add(self.plotter, 1, wx.EXPAND)
main_box.Add(self.control_panel, 0, wx.EXPAND)
self.SetSizerAndFit(main_box)
#alpha and gain mu 2nd orders
def set_gain_omega(gain_mu): self[GAIN_OMEGA_KEY] = .25*gain_mu**2
self.subscribe(GAIN_MU_KEY, set_gain_omega)
#register events
self.subscribe(MSG_KEY, self.handle_msg)
self.subscribe(X_DIVS_KEY, self.update_grid)
self.subscribe(Y_DIVS_KEY, self.update_grid)
#initial update
self.update_grid()
def handle_msg(self, msg):
"""
Plot the samples onto the complex grid.
@param msg the array of complex samples
"""
if not self[RUNNING_KEY]: return
#convert to complex floating point numbers
samples = numpy.fromstring(msg, numpy.complex64)
real = numpy.real(samples)
imag = numpy.imag(samples)
#plot
self.plotter.set_waveform(
channel=0,
samples=(real, imag),
color_spec=CONST_PLOT_COLOR_SPEC,
marker=self[MARKER_KEY],
)
#update the plotter
self.plotter.update()
def update_grid(self):
#update the x axis
x_max = 2.0
self.plotter.set_x_grid(-x_max, x_max, common.get_clean_num(2.0*x_max/self[X_DIVS_KEY]))
#update the y axis
y_max = 2.0
self.plotter.set_y_grid(-y_max, y_max, common.get_clean_num(2.0*y_max/self[Y_DIVS_KEY]))
#update plotter
self.plotter.update()
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