From a80c0f4969a994655ccb18c55f8ce936abcc61f7 Mon Sep 17 00:00:00 2001
From: Ben Reynwar <ben@reynwar.net>
Date: Fri, 8 Mar 2013 20:30:47 -0700
Subject: wxgui: Enabling uninstalled python imports.
---
gr-wxgui/python/wxgui/scope_window.py | 689 ++++++++++++++++++++++++++++++++++
1 file changed, 689 insertions(+)
create mode 100644 gr-wxgui/python/wxgui/scope_window.py
(limited to 'gr-wxgui/python/wxgui/scope_window.py')
diff --git a/gr-wxgui/python/wxgui/scope_window.py b/gr-wxgui/python/wxgui/scope_window.py
new file mode 100644
index 0000000000..306e1757f1
--- /dev/null
+++ b/gr-wxgui/python/wxgui/scope_window.py
@@ -0,0 +1,689 @@
+#
+# Copyright 2008,2010 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 time
+import pubsub
+from constants import *
+from gnuradio import gr #for gr.prefs, trigger modes
+import forms
+
+##################################################
+# Constants
+##################################################
+DEFAULT_FRAME_RATE = gr.prefs().get_long('wxgui', 'scope_rate', 30)
+PERSIST_ALPHA_MIN_EXP, PERSIST_ALPHA_MAX_EXP = -2, 0
+SLIDER_STEPS = 100
+DEFAULT_TRIG_MODE = gr.prefs().get_long('wxgui', 'trig_mode', gr.gr_TRIG_MODE_AUTO)
+DEFAULT_WIN_SIZE = (600, 300)
+COUPLING_MODES = (
+ ('DC', False),
+ ('AC', True),
+)
+TRIGGER_MODES = (
+ ('Freerun', gr.gr_TRIG_MODE_FREE),
+ ('Auto', gr.gr_TRIG_MODE_AUTO),
+ ('Normal', gr.gr_TRIG_MODE_NORM),
+ ('Stripchart', gr.gr_TRIG_MODE_STRIPCHART),
+)
+TRIGGER_SLOPES = (
+ ('Pos +', gr.gr_TRIG_SLOPE_POS),
+ ('Neg -', gr.gr_TRIG_SLOPE_NEG),
+)
+CHANNEL_COLOR_SPECS = (
+ (0.3, 0.3, 1.0),
+ (0.0, 0.8, 0.0),
+ (1.0, 0.0, 0.0),
+ (0.8, 0.0, 0.8),
+ (0.7, 0.7, 0.0),
+ (0.15, 0.90, 0.98),
+
+)
+TRIGGER_COLOR_SPEC = (1.0, 0.4, 0.0)
+AUTORANGE_UPDATE_RATE = 0.5 #sec
+MARKER_TYPES = (
+ ('Line Link', None),
+ ('Dot Large', 3.0),
+ ('Dot Med', 2.0),
+ ('Dot Small', 1.0),
+ ('None', 0.0),
+)
+DEFAULT_MARKER_TYPE = None
+
+##################################################
+# Scope window control panel
+##################################################
+class control_panel(wx.Panel):
+ """
+ A control panel with wx widgits to control the plotter and scope block.
+ """
+ def __init__(self, parent):
+ """
+ Create a new control panel.
+
+ Args:
+ parent: the wx parent window
+ """
+ WIDTH = 90
+ 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 = wx.BoxSizer(wx.VERTICAL)
+
+ ##################################################
+ # Persistence
+ ##################################################
+
+ forms.check_box(
+ sizer=control_box, parent=self, label='Persistence',
+ ps=parent, key=USE_PERSISTENCE_KEY,
+ )
+ #static text and slider for analog alpha
+ persist_alpha_text = forms.static_text(
+ sizer=control_box, parent=self, label='Analog Alpha',
+ converter=forms.float_converter(lambda x: '%.4f'%x),
+ ps=parent, key=PERSIST_ALPHA_KEY, width=50,
+ )
+ persist_alpha_slider = forms.log_slider(
+ sizer=control_box, parent=self,
+ min_exp=PERSIST_ALPHA_MIN_EXP,
+ max_exp=PERSIST_ALPHA_MAX_EXP,
+ num_steps=SLIDER_STEPS,
+ ps=parent, key=PERSIST_ALPHA_KEY,
+ )
+ for widget in (persist_alpha_text, persist_alpha_slider):
+ parent.subscribe(USE_PERSISTENCE_KEY, widget.Enable)
+ widget.Enable(parent[USE_PERSISTENCE_KEY])
+ parent.subscribe(USE_PERSISTENCE_KEY, widget.ShowItems)
+ #allways show initially, so room is reserved for them
+ widget.ShowItems(True) # (parent[USE_PERSISTENCE_KEY])
+
+ parent.subscribe(USE_PERSISTENCE_KEY, self._update_layout)
+
+ ##################################################
+ # Axes Options
+ ##################################################
+ control_box.AddStretchSpacer()
+ axes_options_box = forms.static_box_sizer(
+ parent=self, sizer=control_box, label='Axes Options',
+ bold=True, orient=wx.VERTICAL,
+ )
+ ##################################################
+ # Scope Mode Box
+ ##################################################
+ scope_mode_box = wx.BoxSizer(wx.VERTICAL)
+ axes_options_box.Add(scope_mode_box, 0, wx.EXPAND)
+ #x axis divs
+ forms.incr_decr_buttons(
+ parent=self, sizer=scope_mode_box, label='Secs/Div',
+ on_incr=self._on_incr_t_divs, on_decr=self._on_decr_t_divs,
+ )
+ #y axis divs
+ y_buttons_scope = forms.incr_decr_buttons(
+ parent=self, sizer=scope_mode_box, label='Counts/Div',
+ on_incr=self._on_incr_y_divs, on_decr=self._on_decr_y_divs,
+ )
+ #y axis ref lvl
+ y_off_buttons_scope = forms.incr_decr_buttons(
+ parent=self, sizer=scope_mode_box, label='Y Offset',
+ on_incr=self._on_incr_y_off, on_decr=self._on_decr_y_off,
+ )
+ #t axis ref lvl
+ scope_mode_box.AddSpacer(5)
+ forms.slider(
+ parent=self, sizer=scope_mode_box,
+ ps=parent, key=T_FRAC_OFF_KEY, label='T Offset',
+ minimum=0, maximum=1, num_steps=1000,
+ )
+ scope_mode_box.AddSpacer(5)
+ ##################################################
+ # XY Mode Box
+ ##################################################
+ xy_mode_box = wx.BoxSizer(wx.VERTICAL)
+ axes_options_box.Add(xy_mode_box, 0, wx.EXPAND)
+ #x div controls
+ x_buttons = forms.incr_decr_buttons(
+ parent=self, sizer=xy_mode_box, label='X/Div',
+ on_incr=self._on_incr_x_divs, on_decr=self._on_decr_x_divs,
+ )
+ #y div controls
+ y_buttons = forms.incr_decr_buttons(
+ parent=self, sizer=xy_mode_box, label='Y/Div',
+ on_incr=self._on_incr_y_divs, on_decr=self._on_decr_y_divs,
+ )
+ #x offset controls
+ x_off_buttons = forms.incr_decr_buttons(
+ parent=self, sizer=xy_mode_box, label='X Off',
+ on_incr=self._on_incr_x_off, on_decr=self._on_decr_x_off,
+ )
+ #y offset controls
+ y_off_buttons = forms.incr_decr_buttons(
+ parent=self, sizer=xy_mode_box, label='Y Off',
+ on_incr=self._on_incr_y_off, on_decr=self._on_decr_y_off,
+ )
+ for widget in (y_buttons_scope, y_off_buttons_scope, x_buttons, y_buttons, x_off_buttons, y_off_buttons):
+ parent.subscribe(AUTORANGE_KEY, widget.Disable)
+ widget.Disable(parent[AUTORANGE_KEY])
+ xy_mode_box.ShowItems(False)
+ #autorange check box
+ forms.check_box(
+ parent=self, sizer=axes_options_box, label='Autorange',
+ ps=parent, key=AUTORANGE_KEY,
+ )
+ ##################################################
+ # Channel Options
+ ##################################################
+ TRIGGER_PAGE_INDEX = parent.num_inputs
+ XY_PAGE_INDEX = parent.num_inputs+1
+ control_box.AddStretchSpacer()
+ chan_options_box = forms.static_box_sizer(
+ parent=self, sizer=control_box, label='Channel Options',
+ bold=True, orient=wx.VERTICAL,
+ )
+ options_notebook = wx.Notebook(self)
+ options_notebook_args = list()
+ CHANNELS = [('Ch %d'%(i+1), i) for i in range(parent.num_inputs)]
+ ##################################################
+ # Channel Menu Boxes
+ ##################################################
+ for i in range(parent.num_inputs):
+ channel_menu_panel = wx.Panel(options_notebook)
+ options_notebook_args.append((channel_menu_panel, i, 'Ch%d'%(i+1)))
+ channel_menu_box = wx.BoxSizer(wx.VERTICAL)
+ channel_menu_panel.SetSizer(channel_menu_box)
+ #ac couple check box
+ channel_menu_box.AddStretchSpacer()
+ forms.drop_down(
+ parent=channel_menu_panel, sizer=channel_menu_box,
+ ps=parent, key=common.index_key(AC_COUPLE_KEY, i),
+ choices=map(lambda x: x[1], COUPLING_MODES),
+ labels=map(lambda x: x[0], COUPLING_MODES),
+ label='Coupling', width=WIDTH,
+ )
+ #marker
+ channel_menu_box.AddStretchSpacer()
+ forms.drop_down(
+ parent=channel_menu_panel, sizer=channel_menu_box,
+ ps=parent, key=common.index_key(MARKER_KEY, i),
+ choices=map(lambda x: x[1], MARKER_TYPES),
+ labels=map(lambda x: x[0], MARKER_TYPES),
+ label='Marker', width=WIDTH,
+ )
+ channel_menu_box.AddStretchSpacer()
+ ##################################################
+ # Trigger Menu Box
+ ##################################################
+ trigger_menu_panel = wx.Panel(options_notebook)
+ options_notebook_args.append((trigger_menu_panel, TRIGGER_PAGE_INDEX, 'Trig'))
+ trigger_menu_box = wx.BoxSizer(wx.VERTICAL)
+ trigger_menu_panel.SetSizer(trigger_menu_box)
+ #trigger mode
+ forms.drop_down(
+ parent=trigger_menu_panel, sizer=trigger_menu_box,
+ ps=parent, key=TRIGGER_MODE_KEY,
+ choices=map(lambda x: x[1], TRIGGER_MODES),
+ labels=map(lambda x: x[0], TRIGGER_MODES),
+ label='Mode', width=WIDTH,
+ )
+ #trigger slope
+ trigger_slope_chooser = forms.drop_down(
+ parent=trigger_menu_panel, sizer=trigger_menu_box,
+ ps=parent, key=TRIGGER_SLOPE_KEY,
+ choices=map(lambda x: x[1], TRIGGER_SLOPES),
+ labels=map(lambda x: x[0], TRIGGER_SLOPES),
+ label='Slope', width=WIDTH,
+ )
+ #trigger channel
+ trigger_channel_chooser = forms.drop_down(
+ parent=trigger_menu_panel, sizer=trigger_menu_box,
+ ps=parent, key=TRIGGER_CHANNEL_KEY,
+ choices=map(lambda x: x[1], CHANNELS),
+ labels=map(lambda x: x[0], CHANNELS),
+ label='Channel', width=WIDTH,
+ )
+ #trigger level
+ hbox = wx.BoxSizer(wx.HORIZONTAL)
+ trigger_menu_box.Add(hbox, 0, wx.EXPAND)
+ hbox.Add(wx.StaticText(trigger_menu_panel, label='Level:'), 1, wx.ALIGN_CENTER_VERTICAL)
+ trigger_level_button = forms.single_button(
+ parent=trigger_menu_panel, sizer=hbox, label='50%',
+ callback=parent.set_auto_trigger_level, style=wx.BU_EXACTFIT,
+ )
+ hbox.AddSpacer(WIDTH-60)
+ trigger_level_buttons = forms.incr_decr_buttons(
+ parent=trigger_menu_panel, sizer=hbox,
+ on_incr=self._on_incr_trigger_level, on_decr=self._on_decr_trigger_level,
+ )
+ def disable_all(trigger_mode):
+ for widget in (trigger_slope_chooser, trigger_channel_chooser, trigger_level_buttons, trigger_level_button):
+ widget.Disable(trigger_mode == gr.gr_TRIG_MODE_FREE)
+ parent.subscribe(TRIGGER_MODE_KEY, disable_all)
+ disable_all(parent[TRIGGER_MODE_KEY])
+ ##################################################
+ # XY Menu Box
+ ##################################################
+ if parent.num_inputs > 1:
+ xy_menu_panel = wx.Panel(options_notebook)
+ options_notebook_args.append((xy_menu_panel, XY_PAGE_INDEX, 'XY'))
+ xy_menu_box = wx.BoxSizer(wx.VERTICAL)
+ xy_menu_panel.SetSizer(xy_menu_box)
+ #x and y channel choosers
+ xy_menu_box.AddStretchSpacer()
+ forms.drop_down(
+ parent=xy_menu_panel, sizer=xy_menu_box,
+ ps=parent, key=X_CHANNEL_KEY,
+ choices=map(lambda x: x[1], CHANNELS),
+ labels=map(lambda x: x[0], CHANNELS),
+ label='Channel X', width=WIDTH,
+ )
+ xy_menu_box.AddStretchSpacer()
+ forms.drop_down(
+ parent=xy_menu_panel, sizer=xy_menu_box,
+ ps=parent, key=Y_CHANNEL_KEY,
+ choices=map(lambda x: x[1], CHANNELS),
+ labels=map(lambda x: x[0], CHANNELS),
+ label='Channel Y', width=WIDTH,
+ )
+ #marker
+ xy_menu_box.AddStretchSpacer()
+ forms.drop_down(
+ parent=xy_menu_panel, sizer=xy_menu_box,
+ ps=parent, key=XY_MARKER_KEY,
+ choices=map(lambda x: x[1], MARKER_TYPES),
+ labels=map(lambda x: x[0], MARKER_TYPES),
+ label='Marker', width=WIDTH,
+ )
+ xy_menu_box.AddStretchSpacer()
+ ##################################################
+ # Setup Options Notebook
+ ##################################################
+ forms.notebook(
+ parent=self, sizer=chan_options_box,
+ notebook=options_notebook,
+ ps=parent, key=CHANNEL_OPTIONS_KEY,
+ pages=map(lambda x: x[0], options_notebook_args),
+ choices=map(lambda x: x[1], options_notebook_args),
+ labels=map(lambda x: x[2], options_notebook_args),
+ )
+ #gui handling for channel options changing
+ def options_notebook_changed(chan_opt):
+ try:
+ parent[TRIGGER_SHOW_KEY] = chan_opt == TRIGGER_PAGE_INDEX
+ parent[XY_MODE_KEY] = chan_opt == XY_PAGE_INDEX
+ except wx.PyDeadObjectError: pass
+ parent.subscribe(CHANNEL_OPTIONS_KEY, options_notebook_changed)
+ #gui handling for xy mode changing
+ def xy_mode_changed(mode):
+ #ensure xy tab is selected
+ if mode and parent[CHANNEL_OPTIONS_KEY] != XY_PAGE_INDEX:
+ parent[CHANNEL_OPTIONS_KEY] = XY_PAGE_INDEX
+ #ensure xy tab is not selected
+ elif not mode and parent[CHANNEL_OPTIONS_KEY] == XY_PAGE_INDEX:
+ parent[CHANNEL_OPTIONS_KEY] = 0
+ #show/hide control buttons
+ scope_mode_box.ShowItems(not mode)
+ xy_mode_box.ShowItems(mode)
+ control_box.Layout()
+ parent.subscribe(XY_MODE_KEY, xy_mode_changed)
+ xy_mode_changed(parent[XY_MODE_KEY])
+ ##################################################
+ # Run/Stop Button
+ ##################################################
+ #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)
+ #mouse wheel event
+ def on_mouse_wheel(event):
+ if not parent[XY_MODE_KEY]:
+ if event.GetWheelRotation() < 0: self._on_incr_t_divs(event)
+ else: self._on_decr_t_divs(event)
+ parent.plotter.Bind(wx.EVT_MOUSEWHEEL, on_mouse_wheel)
+
+ ##################################################
+ # Event handlers
+ ##################################################
+ #trigger level
+ def _on_incr_trigger_level(self, event):
+ self.parent[TRIGGER_LEVEL_KEY] += self.parent[Y_PER_DIV_KEY]/3.
+ def _on_decr_trigger_level(self, event):
+ self.parent[TRIGGER_LEVEL_KEY] -= self.parent[Y_PER_DIV_KEY]/3.
+ #incr/decr divs
+ def _on_incr_t_divs(self, event):
+ self.parent[T_PER_DIV_KEY] = common.get_clean_incr(self.parent[T_PER_DIV_KEY])
+ def _on_decr_t_divs(self, event):
+ self.parent[T_PER_DIV_KEY] = common.get_clean_decr(self.parent[T_PER_DIV_KEY])
+ def _on_incr_x_divs(self, event):
+ self.parent[X_PER_DIV_KEY] = common.get_clean_incr(self.parent[X_PER_DIV_KEY])
+ def _on_decr_x_divs(self, event):
+ self.parent[X_PER_DIV_KEY] = common.get_clean_decr(self.parent[X_PER_DIV_KEY])
+ def _on_incr_y_divs(self, event):
+ self.parent[Y_PER_DIV_KEY] = common.get_clean_incr(self.parent[Y_PER_DIV_KEY])
+ def _on_decr_y_divs(self, event):
+ self.parent[Y_PER_DIV_KEY] = common.get_clean_decr(self.parent[Y_PER_DIV_KEY])
+ #incr/decr offset
+ def _on_incr_x_off(self, event):
+ self.parent[X_OFF_KEY] = self.parent[X_OFF_KEY] + self.parent[X_PER_DIV_KEY]
+ def _on_decr_x_off(self, event):
+ self.parent[X_OFF_KEY] = self.parent[X_OFF_KEY] - self.parent[X_PER_DIV_KEY]
+ def _on_incr_y_off(self, event):
+ self.parent[Y_OFF_KEY] = self.parent[Y_OFF_KEY] + self.parent[Y_PER_DIV_KEY]
+ def _on_decr_y_off(self, event):
+ self.parent[Y_OFF_KEY] = self.parent[Y_OFF_KEY] - self.parent[Y_PER_DIV_KEY]
+
+ ##################################################
+ # subscriber handlers
+ ##################################################
+ def _update_layout(self,key):
+ # Just ignore the key value we get
+ # we only need to now that the visability or size of something has changed
+ self.parent.Layout()
+ #self.parent.Fit()
+
+##################################################
+# Scope window with plotter and control panel
+##################################################
+class scope_window(wx.Panel, pubsub.pubsub):
+ def __init__(
+ self,
+ parent,
+ controller,
+ size,
+ title,
+ frame_rate,
+ num_inputs,
+ sample_rate_key,
+ t_scale,
+ v_scale,
+ v_offset,
+ xy_mode,
+ ac_couple_key,
+ trigger_level_key,
+ trigger_mode_key,
+ trigger_slope_key,
+ trigger_channel_key,
+ decimation_key,
+ msg_key,
+ use_persistence,
+ persist_alpha,
+ trig_mode,
+ y_axis_label,
+ ):
+ pubsub.pubsub.__init__(self)
+ #check num inputs
+ assert num_inputs <= len(CHANNEL_COLOR_SPECS)
+ #setup
+ self.sampleses = None
+ self.num_inputs = num_inputs
+ autorange = not v_scale
+ self.autorange_ts = 0
+ v_scale = v_scale or 1
+ self.frame_rate_ts = 0
+ #proxy the keys
+ self.proxy(MSG_KEY, controller, msg_key)
+ self.proxy(SAMPLE_RATE_KEY, controller, sample_rate_key)
+ self.proxy(TRIGGER_LEVEL_KEY, controller, trigger_level_key)
+ self.proxy(TRIGGER_MODE_KEY, controller, trigger_mode_key)
+ self.proxy(TRIGGER_SLOPE_KEY, controller, trigger_slope_key)
+ self.proxy(TRIGGER_CHANNEL_KEY, controller, trigger_channel_key)
+ self.proxy(DECIMATION_KEY, controller, decimation_key)
+ #initialize values
+ self[RUNNING_KEY] = True
+ self[XY_MARKER_KEY] = 2.0
+ self[CHANNEL_OPTIONS_KEY] = 0
+ self[XY_MODE_KEY] = xy_mode
+ self[X_CHANNEL_KEY] = 0
+ self[Y_CHANNEL_KEY] = self.num_inputs-1
+ self[AUTORANGE_KEY] = autorange
+ self[T_PER_DIV_KEY] = t_scale
+ self[X_PER_DIV_KEY] = v_scale
+ self[Y_PER_DIV_KEY] = v_scale
+ self[T_OFF_KEY] = 0
+ self[X_OFF_KEY] = v_offset
+ self[Y_OFF_KEY] = v_offset
+ self[T_DIVS_KEY] = 8
+ self[X_DIVS_KEY] = 8
+ self[Y_DIVS_KEY] = 8
+ self[Y_AXIS_LABEL] = y_axis_label
+ self[FRAME_RATE_KEY] = frame_rate
+ self[TRIGGER_LEVEL_KEY] = 0
+ self[TRIGGER_CHANNEL_KEY] = 0
+ self[TRIGGER_MODE_KEY] = trig_mode
+
+ self[TRIGGER_SLOPE_KEY] = gr.gr_TRIG_SLOPE_POS
+ self[T_FRAC_OFF_KEY] = 0.5
+ self[USE_PERSISTENCE_KEY] = use_persistence
+ self[PERSIST_ALPHA_KEY] = persist_alpha
+
+ if self[TRIGGER_MODE_KEY] == gr.gr_TRIG_MODE_STRIPCHART:
+ self[T_FRAC_OFF_KEY] = 0.0
+
+ for i in range(num_inputs):
+ self.proxy(common.index_key(AC_COUPLE_KEY, i), controller, common.index_key(ac_couple_key, i))
+ #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.enable_legend(True)
+ self.plotter.enable_point_label(True)
+ self.plotter.enable_grid_lines(True)
+ self.plotter.set_use_persistence(use_persistence)
+ self.plotter.set_persist_alpha(persist_alpha)
+ #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)
+ #register events for message
+ self.subscribe(MSG_KEY, self.handle_msg)
+ #register events for grid
+ for key in [common.index_key(MARKER_KEY, i) for i in range(self.num_inputs)] + [
+ TRIGGER_LEVEL_KEY, TRIGGER_MODE_KEY,
+ T_PER_DIV_KEY, X_PER_DIV_KEY, Y_PER_DIV_KEY,
+ T_OFF_KEY, X_OFF_KEY, Y_OFF_KEY,
+ T_DIVS_KEY, X_DIVS_KEY, Y_DIVS_KEY,
+ XY_MODE_KEY, AUTORANGE_KEY, T_FRAC_OFF_KEY,
+ TRIGGER_SHOW_KEY, XY_MARKER_KEY, X_CHANNEL_KEY, Y_CHANNEL_KEY,
+ ]: self.subscribe(key, self.update_grid)
+ #register events for plotter settings
+ self.subscribe(USE_PERSISTENCE_KEY, self.plotter.set_use_persistence)
+ self.subscribe(PERSIST_ALPHA_KEY, self.plotter.set_persist_alpha)
+ #initial update
+ self.update_grid()
+
+ def handle_msg(self, msg):
+ """
+ Handle the message from the scope sink message queue.
+ Plot the list of arrays of samples onto the grid.
+ Each samples array gets its own channel.
+
+ Args:
+ msg: the time domain data as a character array
+ """
+ if not self[RUNNING_KEY]: return
+ #check time elapsed
+ if time.time() - self.frame_rate_ts < 1.0/self[FRAME_RATE_KEY]: return
+ #convert to floating point numbers
+ samples = numpy.fromstring(msg, numpy.float32)
+ #extract the trigger offset
+ self.trigger_offset = samples[-1]
+ samples = samples[:-1]
+ samps_per_ch = len(samples)/self.num_inputs
+ self.sampleses = [samples[samps_per_ch*i:samps_per_ch*(i+1)] for i in range(self.num_inputs)]
+ #handle samples
+ self.handle_samples()
+ self.frame_rate_ts = time.time()
+
+ def set_auto_trigger_level(self, *args):
+ """
+ Use the current trigger channel and samples to calculate the 50% level.
+ """
+ if not self.sampleses: return
+ samples = self.sampleses[self[TRIGGER_CHANNEL_KEY]]
+ self[TRIGGER_LEVEL_KEY] = (numpy.max(samples)+numpy.min(samples))/2
+
+ def handle_samples(self):
+ """
+ Handle the cached samples from the scope input.
+ Perform ac coupling, triggering, and auto ranging.
+ """
+ if not self.sampleses: return
+ sampleses = self.sampleses
+ if self[XY_MODE_KEY]:
+ self[DECIMATION_KEY] = 1
+ x_samples = sampleses[self[X_CHANNEL_KEY]]
+ y_samples = sampleses[self[Y_CHANNEL_KEY]]
+ #autorange
+ if self[AUTORANGE_KEY] and time.time() - self.autorange_ts > AUTORANGE_UPDATE_RATE:
+ x_min, x_max = common.get_min_max(x_samples)
+ y_min, y_max = common.get_min_max(y_samples)
+ #adjust the x per div
+ x_per_div = common.get_clean_num((x_max-x_min)/self[X_DIVS_KEY])
+ if x_per_div != self[X_PER_DIV_KEY]: self[X_PER_DIV_KEY] = x_per_div; return
+ #adjust the x offset
+ x_off = x_per_div*round((x_max+x_min)/2/x_per_div)
+ if x_off != self[X_OFF_KEY]: self[X_OFF_KEY] = x_off; return
+ #adjust the y per div
+ y_per_div = common.get_clean_num((y_max-y_min)/self[Y_DIVS_KEY])
+ if y_per_div != self[Y_PER_DIV_KEY]: self[Y_PER_DIV_KEY] = y_per_div; return
+ #adjust the y offset
+ y_off = y_per_div*round((y_max+y_min)/2/y_per_div)
+ if y_off != self[Y_OFF_KEY]: self[Y_OFF_KEY] = y_off; return
+ self.autorange_ts = time.time()
+ #plot xy channel
+ self.plotter.set_waveform(
+ channel='XY',
+ samples=(x_samples, y_samples),
+ color_spec=CHANNEL_COLOR_SPECS[0],
+ marker=self[XY_MARKER_KEY],
+ )
+ #turn off each waveform
+ for i, samples in enumerate(sampleses):
+ self.plotter.clear_waveform(channel='Ch%d'%(i+1))
+ else:
+ #autorange
+ if self[AUTORANGE_KEY] and time.time() - self.autorange_ts > AUTORANGE_UPDATE_RATE:
+ bounds = [common.get_min_max(samples) for samples in sampleses]
+ y_min = numpy.min([bound[0] for bound in bounds])
+ y_max = numpy.max([bound[1] for bound in bounds])
+ #adjust the y per div
+ y_per_div = common.get_clean_num((y_max-y_min)/self[Y_DIVS_KEY])
+ if y_per_div != self[Y_PER_DIV_KEY]: self[Y_PER_DIV_KEY] = y_per_div; return
+ #adjust the y offset
+ y_off = y_per_div*round((y_max+y_min)/2/y_per_div)
+ if y_off != self[Y_OFF_KEY]: self[Y_OFF_KEY] = y_off; return
+ self.autorange_ts = time.time()
+ #number of samples to scale to the screen
+ actual_rate = self.get_actual_rate()
+ time_span = self[T_PER_DIV_KEY]*self[T_DIVS_KEY]
+ num_samps = int(round(time_span*actual_rate))
+ #handle the time offset
+ t_off = self[T_FRAC_OFF_KEY]*(len(sampleses[0])/actual_rate - time_span)
+ if t_off != self[T_OFF_KEY]: self[T_OFF_KEY] = t_off; return
+ samps_off = int(round(actual_rate*self[T_OFF_KEY]))
+ #adjust the decim so that we use about half the samps
+ self[DECIMATION_KEY] = int(round(
+ time_span*self[SAMPLE_RATE_KEY]/(0.5*len(sampleses[0]))
+ )
+ )
+ #num samps too small, auto increment the time
+ if num_samps < 2: self[T_PER_DIV_KEY] = common.get_clean_incr(self[T_PER_DIV_KEY])
+ #num samps in bounds, plot each waveform
+ elif num_samps <= len(sampleses[0]):
+ for i, samples in enumerate(sampleses):
+ #plot samples
+ self.plotter.set_waveform(
+ channel='Ch%d'%(i+1),
+ samples=samples[samps_off:num_samps+samps_off],
+ color_spec=CHANNEL_COLOR_SPECS[i],
+ marker=self[common.index_key(MARKER_KEY, i)],
+ trig_off=self.trigger_offset,
+ )
+ #turn XY channel off
+ self.plotter.clear_waveform(channel='XY')
+ #keep trigger level within range
+ if self[TRIGGER_LEVEL_KEY] > self.get_y_max():
+ self[TRIGGER_LEVEL_KEY] = self.get_y_max(); return
+ if self[TRIGGER_LEVEL_KEY] < self.get_y_min():
+ self[TRIGGER_LEVEL_KEY] = self.get_y_min(); return
+ #disable the trigger channel
+ if not self[TRIGGER_SHOW_KEY] or self[XY_MODE_KEY] or self[TRIGGER_MODE_KEY] == gr.gr_TRIG_MODE_FREE:
+ self.plotter.clear_waveform(channel='Trig')
+ else: #show trigger channel
+ trigger_level = self[TRIGGER_LEVEL_KEY]
+ trigger_point = (len(self.sampleses[0])-1)/self.get_actual_rate()/2.0
+ self.plotter.set_waveform(
+ channel='Trig',
+ samples=(
+ [self.get_t_min(), trigger_point, trigger_point, trigger_point, trigger_point, self.get_t_max()],
+ [trigger_level, trigger_level, self.get_y_max(), self.get_y_min(), trigger_level, trigger_level]
+ ),
+ color_spec=TRIGGER_COLOR_SPEC,
+ )
+ #update the plotter
+ self.plotter.update()
+
+ def get_actual_rate(self): return 1.0*self[SAMPLE_RATE_KEY]/self[DECIMATION_KEY]
+ def get_t_min(self): return self[T_OFF_KEY]
+ def get_t_max(self): return self[T_PER_DIV_KEY]*self[T_DIVS_KEY] + self[T_OFF_KEY]
+ def get_x_min(self): return -1*self[X_PER_DIV_KEY]*self[X_DIVS_KEY]/2.0 + self[X_OFF_KEY]
+ def get_x_max(self): return self[X_PER_DIV_KEY]*self[X_DIVS_KEY]/2.0 + self[X_OFF_KEY]
+ def get_y_min(self): return -1*self[Y_PER_DIV_KEY]*self[Y_DIVS_KEY]/2.0 + self[Y_OFF_KEY]
+ def get_y_max(self): return self[Y_PER_DIV_KEY]*self[Y_DIVS_KEY]/2.0 + self[Y_OFF_KEY]
+
+ def update_grid(self, *args):
+ """
+ Update the grid to reflect the current settings:
+ xy divisions, xy offset, xy mode setting
+ """
+ if self[T_FRAC_OFF_KEY] < 0: self[T_FRAC_OFF_KEY] = 0; return
+ if self[T_FRAC_OFF_KEY] > 1: self[T_FRAC_OFF_KEY] = 1; return
+ if self[XY_MODE_KEY]:
+ #update the x axis
+ self.plotter.set_x_label('Ch%d'%(self[X_CHANNEL_KEY]+1))
+ self.plotter.set_x_grid(self.get_x_min(), self.get_x_max(), self[X_PER_DIV_KEY])
+ #update the y axis
+ self.plotter.set_y_label('Ch%d'%(self[Y_CHANNEL_KEY]+1))
+ self.plotter.set_y_grid(self.get_y_min(), self.get_y_max(), self[Y_PER_DIV_KEY])
+ else:
+ #update the t axis
+ self.plotter.set_x_label('Time', 's')
+ self.plotter.set_x_grid(self.get_t_min(), self.get_t_max(), self[T_PER_DIV_KEY], True)
+ #update the y axis
+ self.plotter.set_y_label(self[Y_AXIS_LABEL])
+ self.plotter.set_y_grid(self.get_y_min(), self.get_y_max(), self[Y_PER_DIV_KEY])
+ #redraw current sample
+ self.handle_samples()
+
--
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