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   1 #
   2 # Copyright 2008 Free Software Foundation, Inc.
   3 #
   4 # This file is part of GNU Radio
   5 #
   6 # GNU Radio is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3, or (at your option)
   9 # any later version.
  10 #
  11 # GNU Radio is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with GNU Radio; see the file COPYING.  If not, write to
  18 # the Free Software Foundation, Inc., 51 Franklin Street,
  19 # Boston, MA 02110-1301, USA.
  20 #
  21
  22 ##################################################
  23 # Imports
  24 ##################################################
  25 import plotter
  26 import common
  27 import wx
  28 import numpy
  29 import math
  30 import pubsub
  31 from constants import *
  32 from gnuradio import gr #for gr.prefs
  33
  34 ##################################################
  35 # Constants
  36 ##################################################
  37 SLIDER_STEPS = 200
  38 ALPHA_MIN_EXP, ALPHA_MAX_EXP = -6, -0.301
  39 GAIN_MU_MIN_EXP, GAIN_MU_MAX_EXP = -6, -0.301
  40 DEFAULT_FRAME_RATE = gr.prefs().get_long('wxgui', 'const_rate', 5)
  41 DEFAULT_WIN_SIZE = (500, 400)
  42 DEFAULT_CONST_SIZE = gr.prefs().get_long('wxgui', 'const_size', 2048)
  43 CONST_PLOT_COLOR_SPEC = (0, 0, 1)
  44 MARKER_TYPES = (
  45         ('Dot Small', 1.0),
  46         ('Dot Medium', 2.0),
  47         ('Dot Large', 3.0),
  48         ('Line Link', None),
  49 )
  50 DEFAULT_MARKER_TYPE = 2.0
  51
  52 ##################################################
  53 # Constellation window control panel
  54 ##################################################
  55 class control_panel(wx.Panel):
  56         """
  57         A control panel with wx widgits to control the plotter.
  58         """
  59         def __init__(self, parent):
  60                 """
  61                 Create a new control panel.
  62                 @param parent the wx parent window
  63                 """
  64                 self.parent = parent
  65                 wx.Panel.__init__(self, parent, style=wx.SUNKEN_BORDER)
  66                 control_box = wx.BoxSizer(wx.VERTICAL)
  67                 self.marker_index = 2
  68                 #begin control box
  69                 control_box.Add(common.LabelText(self, 'Options'), 0, wx.ALIGN_CENTER)
  70                 #alpha
  71                 control_box.AddStretchSpacer()
  72                 alpha_slider = common.LogSliderController(
  73                         self, 'Alpha',
  74                         ALPHA_MIN_EXP, ALPHA_MAX_EXP, SLIDER_STEPS,
  75                         parent, ALPHA_KEY,
  76                 )
  77                 control_box.Add(alpha_slider, 0, wx.EXPAND)
  78                 #gain_mu
  79                 control_box.AddStretchSpacer()
  80                 gain_mu_slider = common.LogSliderController(
  81                         self, 'Gain Mu',
  82                         GAIN_MU_MIN_EXP, GAIN_MU_MAX_EXP, SLIDER_STEPS,
  83                         parent, GAIN_MU_KEY,
  84                 )
  85                 control_box.Add(gain_mu_slider, 0, wx.EXPAND)
  86                 #marker
  87                 control_box.AddStretchSpacer()
  88                 marker_chooser = common.DropDownController(self, MARKER_TYPES, parent, MARKER_KEY)
  89                 control_box.Add(common.LabelBox(self, 'Marker', marker_chooser), 0, wx.EXPAND)
  90                 #run/stop
  91                 control_box.AddStretchSpacer()
  92                 self.run_button = common.ToggleButtonController(self, parent, RUNNING_KEY, 'Stop', 'Run')
  93                 control_box.Add(self.run_button, 0, wx.EXPAND)
  94                 #set sizer
  95                 self.SetSizerAndFit(control_box)
  96
  97 ##################################################
  98 # Constellation window with plotter and control panel
  99 ##################################################
 100 class const_window(wx.Panel, pubsub.pubsub):
 101         def __init__(
 102                 self,
 103                 parent,
 104                 controller,
 105                 size,
 106                 title,
 107                 msg_key,
 108                 alpha_key,
 109                 beta_key,
 110                 gain_mu_key,
 111                 gain_omega_key,
 112                 omega_key,
 113                 sample_rate_key,
 114         ):
 115                 pubsub.pubsub.__init__(self)
 116                 #proxy the keys
 117                 self.proxy(MSG_KEY, controller, msg_key)
 118                 self.proxy(ALPHA_KEY, controller, alpha_key)
 119                 self.proxy(BETA_KEY, controller, beta_key)
 120                 self.proxy(GAIN_MU_KEY, controller, gain_mu_key)
 121                 self.proxy(GAIN_OMEGA_KEY, controller, gain_omega_key)
 122                 self.proxy(OMEGA_KEY, controller, omega_key)
 123                 self.proxy(SAMPLE_RATE_KEY, controller, sample_rate_key)
 124                 #init panel and plot
 125                 wx.Panel.__init__(self, parent, style=wx.SIMPLE_BORDER)
 126                 self.plotter = plotter.channel_plotter(self)
 127                 self.plotter.SetSize(wx.Size(*size))
 128                 self.plotter.set_title(title)
 129                 self.plotter.set_x_label('Inphase')
 130                 self.plotter.set_y_label('Quadrature')
 131                 self.plotter.enable_point_label(True)
 132                 self.plotter.enable_grid_lines(True)
 133                 #setup the box with plot and controls
 134                 self.control_panel = control_panel(self)
 135                 main_box = wx.BoxSizer(wx.HORIZONTAL)
 136                 main_box.Add(self.plotter, 1, wx.EXPAND)
 137                 main_box.Add(self.control_panel, 0, wx.EXPAND)
 138                 self.SetSizerAndFit(main_box)
 139                 #alpha and gain mu 2nd orders
 140                 def set_beta(alpha): self[BETA_KEY] = .25*alpha**2
 141                 self.subscribe(ALPHA_KEY, set_beta)
 142                 def set_gain_omega(gain_mu): self[GAIN_OMEGA_KEY] = .25*gain_mu**2
 143                 self.subscribe(GAIN_MU_KEY, set_gain_omega)
 144                 #initialize values
 145                 self[ALPHA_KEY] = self[ALPHA_KEY]
 146                 self[GAIN_MU_KEY] = self[GAIN_MU_KEY]
 147                 self[RUNNING_KEY] = True
 148                 self[X_DIVS_KEY] = 8
 149                 self[Y_DIVS_KEY] = 8
 150                 self[MARKER_KEY] = DEFAULT_MARKER_TYPE
 151                 #register events
 152                 self.subscribe(MSG_KEY, self.handle_msg)
 153                 self.subscribe(X_DIVS_KEY, self.update_grid)
 154                 self.subscribe(Y_DIVS_KEY, self.update_grid)
 155                 #initial update
 156                 self.update_grid()
 157
 158         def handle_msg(self, msg):
 159                 """
 160                 Plot the samples onto the complex grid.
 161                 @param msg the array of complex samples
 162                 """
 163                 if not self[RUNNING_KEY]: return
 164                 #convert to complex floating point numbers
 165                 samples = numpy.fromstring(msg, numpy.complex64)
 166                 real = numpy.real(samples)
 167                 imag = numpy.imag(samples)
 168                 #plot
 169                 self.plotter.set_waveform(
 170                         channel=0,
 171                         samples=(real, imag),
 172                         color_spec=CONST_PLOT_COLOR_SPEC,
 173                         marker=self[MARKER_KEY],
 174                 )
 175                 #update the plotter
 176                 self.plotter.update()
 177
 178         def update_grid(self):
 179                 #update the x axis
 180                 x_max = 2.0
 181                 self.plotter.set_x_grid(-x_max, x_max, common.get_clean_num(2.0*x_max/self[X_DIVS_KEY]))
 182                 #update the y axis
 183                 y_max = 2.0
 184                 self.plotter.set_y_grid(-y_max, y_max, common.get_clean_num(2.0*y_max/self[Y_DIVS_KEY]))
 185                 #update plotter
 186                 self.plotter.update()
 187
 188
 189
 190