2 # Copyright 2008,2010 Free Software Foundation, Inc.
4 # This file is part of GNU Radio
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)
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.
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.
22 ##################################################
24 ##################################################
31 from constants import *
32 from gnuradio import gr #for gr.prefs, trigger modes
35 ##################################################
37 ##################################################
38 DEFAULT_FRAME_RATE = gr.prefs().get_long('wxgui', 'scope_rate', 30)
39 PERSIST_ALPHA_MIN_EXP, PERSIST_ALPHA_MAX_EXP = -2, 0
41 DEFAULT_WIN_SIZE = (600, 300)
47 ('Freerun', gr.gr_TRIG_MODE_FREE),
48 ('Auto', gr.gr_TRIG_MODE_AUTO),
49 ('Normal', gr.gr_TRIG_MODE_NORM),
52 ('Pos +', gr.gr_TRIG_SLOPE_POS),
53 ('Neg -', gr.gr_TRIG_SLOPE_NEG),
55 CHANNEL_COLOR_SPECS = (
64 TRIGGER_COLOR_SPEC = (1.0, 0.4, 0.0)
65 AUTORANGE_UPDATE_RATE = 0.5 #sec
73 DEFAULT_MARKER_TYPE = None
75 ##################################################
76 # Scope window control panel
77 ##################################################
78 class control_panel(wx.Panel):
80 A control panel with wx widgits to control the plotter and scope block.
82 def __init__(self, parent):
84 Create a new control panel.
85 @param parent the wx parent window
89 wx.Panel.__init__(self, parent, style=wx.SUNKEN_BORDER)
90 parent[SHOW_CONTROL_PANEL_KEY] = True
91 parent.subscribe(SHOW_CONTROL_PANEL_KEY, self.Show)
92 control_box = wx.BoxSizer(wx.VERTICAL)
94 ##################################################
96 ##################################################
99 sizer=control_box, parent=self, label='Persistence',
100 ps=parent, key=USE_PERSISTENCE_KEY,
102 #static text and slider for analog alpha
103 persist_alpha_text = forms.static_text(
104 sizer=control_box, parent=self, label='Analog Alpha',
105 converter=forms.float_converter(lambda x: '%.4f'%x),
106 ps=parent, key=PERSIST_ALPHA_KEY, width=50,
108 persist_alpha_slider = forms.log_slider(
109 sizer=control_box, parent=self,
110 min_exp=PERSIST_ALPHA_MIN_EXP,
111 max_exp=PERSIST_ALPHA_MAX_EXP,
112 num_steps=SLIDER_STEPS,
113 ps=parent, key=PERSIST_ALPHA_KEY,
115 for widget in (persist_alpha_text, persist_alpha_slider):
116 parent.subscribe(USE_PERSISTENCE_KEY, widget.Enable)
117 widget.Enable(parent[USE_PERSISTENCE_KEY])
118 parent.subscribe(USE_PERSISTENCE_KEY, widget.ShowItems)
119 #allways show initially, so room is reserved for them
120 widget.ShowItems(True) # (parent[USE_PERSISTENCE_KEY])
122 parent.subscribe(USE_PERSISTENCE_KEY, self._update_layout)
124 ##################################################
126 ##################################################
127 control_box.AddStretchSpacer()
128 axes_options_box = forms.static_box_sizer(
129 parent=self, sizer=control_box, label='Axes Options',
130 bold=True, orient=wx.VERTICAL,
132 ##################################################
134 ##################################################
135 scope_mode_box = wx.BoxSizer(wx.VERTICAL)
136 axes_options_box.Add(scope_mode_box, 0, wx.EXPAND)
138 forms.incr_decr_buttons(
139 parent=self, sizer=scope_mode_box, label='Secs/Div',
140 on_incr=self._on_incr_t_divs, on_decr=self._on_decr_t_divs,
143 y_buttons_scope = forms.incr_decr_buttons(
144 parent=self, sizer=scope_mode_box, label='Counts/Div',
145 on_incr=self._on_incr_y_divs, on_decr=self._on_decr_y_divs,
148 y_off_buttons_scope = forms.incr_decr_buttons(
149 parent=self, sizer=scope_mode_box, label='Y Offset',
150 on_incr=self._on_incr_y_off, on_decr=self._on_decr_y_off,
153 scope_mode_box.AddSpacer(5)
155 parent=self, sizer=scope_mode_box,
156 ps=parent, key=T_FRAC_OFF_KEY, label='T Offset',
157 minimum=0, maximum=1, num_steps=1000,
159 scope_mode_box.AddSpacer(5)
160 ##################################################
162 ##################################################
163 xy_mode_box = wx.BoxSizer(wx.VERTICAL)
164 axes_options_box.Add(xy_mode_box, 0, wx.EXPAND)
166 x_buttons = forms.incr_decr_buttons(
167 parent=self, sizer=xy_mode_box, label='X/Div',
168 on_incr=self._on_incr_x_divs, on_decr=self._on_decr_x_divs,
171 y_buttons = forms.incr_decr_buttons(
172 parent=self, sizer=xy_mode_box, label='Y/Div',
173 on_incr=self._on_incr_y_divs, on_decr=self._on_decr_y_divs,
176 x_off_buttons = forms.incr_decr_buttons(
177 parent=self, sizer=xy_mode_box, label='X Off',
178 on_incr=self._on_incr_x_off, on_decr=self._on_decr_x_off,
181 y_off_buttons = forms.incr_decr_buttons(
182 parent=self, sizer=xy_mode_box, label='Y Off',
183 on_incr=self._on_incr_y_off, on_decr=self._on_decr_y_off,
185 for widget in (y_buttons_scope, y_off_buttons_scope, x_buttons, y_buttons, x_off_buttons, y_off_buttons):
186 parent.subscribe(AUTORANGE_KEY, widget.Disable)
187 widget.Disable(parent[AUTORANGE_KEY])
188 xy_mode_box.ShowItems(False)
191 parent=self, sizer=axes_options_box, label='Autorange',
192 ps=parent, key=AUTORANGE_KEY,
194 ##################################################
196 ##################################################
197 TRIGGER_PAGE_INDEX = parent.num_inputs
198 XY_PAGE_INDEX = parent.num_inputs+1
199 control_box.AddStretchSpacer()
200 chan_options_box = forms.static_box_sizer(
201 parent=self, sizer=control_box, label='Channel Options',
202 bold=True, orient=wx.VERTICAL,
204 options_notebook = wx.Notebook(self)
205 options_notebook_args = list()
206 CHANNELS = [('Ch %d'%(i+1), i) for i in range(parent.num_inputs)]
207 ##################################################
209 ##################################################
210 for i in range(parent.num_inputs):
211 channel_menu_panel = wx.Panel(options_notebook)
212 options_notebook_args.append((channel_menu_panel, i, 'Ch%d'%(i+1)))
213 channel_menu_box = wx.BoxSizer(wx.VERTICAL)
214 channel_menu_panel.SetSizer(channel_menu_box)
216 channel_menu_box.AddStretchSpacer()
218 parent=channel_menu_panel, sizer=channel_menu_box,
219 ps=parent, key=common.index_key(AC_COUPLE_KEY, i),
220 choices=map(lambda x: x[1], COUPLING_MODES),
221 labels=map(lambda x: x[0], COUPLING_MODES),
222 label='Coupling', width=WIDTH,
225 channel_menu_box.AddStretchSpacer()
227 parent=channel_menu_panel, sizer=channel_menu_box,
228 ps=parent, key=common.index_key(MARKER_KEY, i),
229 choices=map(lambda x: x[1], MARKER_TYPES),
230 labels=map(lambda x: x[0], MARKER_TYPES),
231 label='Marker', width=WIDTH,
233 channel_menu_box.AddStretchSpacer()
234 ##################################################
236 ##################################################
237 trigger_menu_panel = wx.Panel(options_notebook)
238 options_notebook_args.append((trigger_menu_panel, TRIGGER_PAGE_INDEX, 'Trig'))
239 trigger_menu_box = wx.BoxSizer(wx.VERTICAL)
240 trigger_menu_panel.SetSizer(trigger_menu_box)
243 parent=trigger_menu_panel, sizer=trigger_menu_box,
244 ps=parent, key=TRIGGER_MODE_KEY,
245 choices=map(lambda x: x[1], TRIGGER_MODES),
246 labels=map(lambda x: x[0], TRIGGER_MODES),
247 label='Mode', width=WIDTH,
250 trigger_slope_chooser = forms.drop_down(
251 parent=trigger_menu_panel, sizer=trigger_menu_box,
252 ps=parent, key=TRIGGER_SLOPE_KEY,
253 choices=map(lambda x: x[1], TRIGGER_SLOPES),
254 labels=map(lambda x: x[0], TRIGGER_SLOPES),
255 label='Slope', width=WIDTH,
258 trigger_channel_chooser = forms.drop_down(
259 parent=trigger_menu_panel, sizer=trigger_menu_box,
260 ps=parent, key=TRIGGER_CHANNEL_KEY,
261 choices=map(lambda x: x[1], CHANNELS),
262 labels=map(lambda x: x[0], CHANNELS),
263 label='Channel', width=WIDTH,
266 hbox = wx.BoxSizer(wx.HORIZONTAL)
267 trigger_menu_box.Add(hbox, 0, wx.EXPAND)
268 hbox.Add(wx.StaticText(trigger_menu_panel, label='Level:'), 1, wx.ALIGN_CENTER_VERTICAL)
269 trigger_level_button = forms.single_button(
270 parent=trigger_menu_panel, sizer=hbox, label='50%',
271 callback=parent.set_auto_trigger_level, style=wx.BU_EXACTFIT,
273 hbox.AddSpacer(WIDTH-60)
274 trigger_level_buttons = forms.incr_decr_buttons(
275 parent=trigger_menu_panel, sizer=hbox,
276 on_incr=self._on_incr_trigger_level, on_decr=self._on_decr_trigger_level,
278 def disable_all(trigger_mode):
279 for widget in (trigger_slope_chooser, trigger_channel_chooser, trigger_level_buttons, trigger_level_button):
280 widget.Disable(trigger_mode == gr.gr_TRIG_MODE_FREE)
281 parent.subscribe(TRIGGER_MODE_KEY, disable_all)
282 disable_all(parent[TRIGGER_MODE_KEY])
283 ##################################################
285 ##################################################
286 if parent.num_inputs > 1:
287 xy_menu_panel = wx.Panel(options_notebook)
288 options_notebook_args.append((xy_menu_panel, XY_PAGE_INDEX, 'XY'))
289 xy_menu_box = wx.BoxSizer(wx.VERTICAL)
290 xy_menu_panel.SetSizer(xy_menu_box)
291 #x and y channel choosers
292 xy_menu_box.AddStretchSpacer()
294 parent=xy_menu_panel, sizer=xy_menu_box,
295 ps=parent, key=X_CHANNEL_KEY,
296 choices=map(lambda x: x[1], CHANNELS),
297 labels=map(lambda x: x[0], CHANNELS),
298 label='Channel X', width=WIDTH,
300 xy_menu_box.AddStretchSpacer()
302 parent=xy_menu_panel, sizer=xy_menu_box,
303 ps=parent, key=Y_CHANNEL_KEY,
304 choices=map(lambda x: x[1], CHANNELS),
305 labels=map(lambda x: x[0], CHANNELS),
306 label='Channel Y', width=WIDTH,
309 xy_menu_box.AddStretchSpacer()
311 parent=xy_menu_panel, sizer=xy_menu_box,
312 ps=parent, key=XY_MARKER_KEY,
313 choices=map(lambda x: x[1], MARKER_TYPES),
314 labels=map(lambda x: x[0], MARKER_TYPES),
315 label='Marker', width=WIDTH,
317 xy_menu_box.AddStretchSpacer()
318 ##################################################
319 # Setup Options Notebook
320 ##################################################
322 parent=self, sizer=chan_options_box,
323 notebook=options_notebook,
324 ps=parent, key=CHANNEL_OPTIONS_KEY,
325 pages=map(lambda x: x[0], options_notebook_args),
326 choices=map(lambda x: x[1], options_notebook_args),
327 labels=map(lambda x: x[2], options_notebook_args),
329 #gui handling for channel options changing
330 def options_notebook_changed(chan_opt):
332 parent[TRIGGER_SHOW_KEY] = chan_opt == TRIGGER_PAGE_INDEX
333 parent[XY_MODE_KEY] = chan_opt == XY_PAGE_INDEX
334 except wx.PyDeadObjectError: pass
335 parent.subscribe(CHANNEL_OPTIONS_KEY, options_notebook_changed)
336 #gui handling for xy mode changing
337 def xy_mode_changed(mode):
338 #ensure xy tab is selected
339 if mode and parent[CHANNEL_OPTIONS_KEY] != XY_PAGE_INDEX:
340 parent[CHANNEL_OPTIONS_KEY] = XY_PAGE_INDEX
341 #ensure xy tab is not selected
342 elif not mode and parent[CHANNEL_OPTIONS_KEY] == XY_PAGE_INDEX:
343 parent[CHANNEL_OPTIONS_KEY] = 0
344 #show/hide control buttons
345 scope_mode_box.ShowItems(not mode)
346 xy_mode_box.ShowItems(mode)
348 parent.subscribe(XY_MODE_KEY, xy_mode_changed)
349 xy_mode_changed(parent[XY_MODE_KEY])
350 ##################################################
352 ##################################################
354 control_box.AddStretchSpacer()
356 sizer=control_box, parent=self,
357 true_label='Stop', false_label='Run',
358 ps=parent, key=RUNNING_KEY,
361 self.SetSizerAndFit(control_box)
363 def on_mouse_wheel(event):
364 if not parent[XY_MODE_KEY]:
365 if event.GetWheelRotation() < 0: self._on_incr_t_divs(event)
366 else: self._on_decr_t_divs(event)
367 parent.plotter.Bind(wx.EVT_MOUSEWHEEL, on_mouse_wheel)
369 ##################################################
371 ##################################################
373 def _on_incr_trigger_level(self, event):
374 self.parent[TRIGGER_LEVEL_KEY] += self.parent[Y_PER_DIV_KEY]/3.
375 def _on_decr_trigger_level(self, event):
376 self.parent[TRIGGER_LEVEL_KEY] -= self.parent[Y_PER_DIV_KEY]/3.
378 def _on_incr_t_divs(self, event):
379 self.parent[T_PER_DIV_KEY] = common.get_clean_incr(self.parent[T_PER_DIV_KEY])
380 def _on_decr_t_divs(self, event):
381 self.parent[T_PER_DIV_KEY] = common.get_clean_decr(self.parent[T_PER_DIV_KEY])
382 def _on_incr_x_divs(self, event):
383 self.parent[X_PER_DIV_KEY] = common.get_clean_incr(self.parent[X_PER_DIV_KEY])
384 def _on_decr_x_divs(self, event):
385 self.parent[X_PER_DIV_KEY] = common.get_clean_decr(self.parent[X_PER_DIV_KEY])
386 def _on_incr_y_divs(self, event):
387 self.parent[Y_PER_DIV_KEY] = common.get_clean_incr(self.parent[Y_PER_DIV_KEY])
388 def _on_decr_y_divs(self, event):
389 self.parent[Y_PER_DIV_KEY] = common.get_clean_decr(self.parent[Y_PER_DIV_KEY])
391 def _on_incr_x_off(self, event):
392 self.parent[X_OFF_KEY] = self.parent[X_OFF_KEY] + self.parent[X_PER_DIV_KEY]
393 def _on_decr_x_off(self, event):
394 self.parent[X_OFF_KEY] = self.parent[X_OFF_KEY] - self.parent[X_PER_DIV_KEY]
395 def _on_incr_y_off(self, event):
396 self.parent[Y_OFF_KEY] = self.parent[Y_OFF_KEY] + self.parent[Y_PER_DIV_KEY]
397 def _on_decr_y_off(self, event):
398 self.parent[Y_OFF_KEY] = self.parent[Y_OFF_KEY] - self.parent[Y_PER_DIV_KEY]
400 ##################################################
401 # subscriber handlers
402 ##################################################
403 def _update_layout(self,key):
404 # Just ignore the key value we get
405 # we only need to now that the visability or size of something has changed
409 ##################################################
410 # Scope window with plotter and control panel
411 ##################################################
412 class scope_window(wx.Panel, pubsub.pubsub):
436 pubsub.pubsub.__init__(self)
438 assert num_inputs <= len(CHANNEL_COLOR_SPECS)
440 self.sampleses = None
441 self.num_inputs = num_inputs
442 autorange = not v_scale
443 self.autorange_ts = 0
444 v_scale = v_scale or 1
445 self.frame_rate_ts = 0
447 self.proxy(MSG_KEY, controller, msg_key)
448 self.proxy(SAMPLE_RATE_KEY, controller, sample_rate_key)
449 self.proxy(TRIGGER_LEVEL_KEY, controller, trigger_level_key)
450 self.proxy(TRIGGER_MODE_KEY, controller, trigger_mode_key)
451 self.proxy(TRIGGER_SLOPE_KEY, controller, trigger_slope_key)
452 self.proxy(TRIGGER_CHANNEL_KEY, controller, trigger_channel_key)
453 self.proxy(DECIMATION_KEY, controller, decimation_key)
455 self[RUNNING_KEY] = True
456 self[XY_MARKER_KEY] = 2.0
457 self[CHANNEL_OPTIONS_KEY] = 0
458 self[XY_MODE_KEY] = xy_mode
459 self[X_CHANNEL_KEY] = 0
460 self[Y_CHANNEL_KEY] = self.num_inputs-1
461 self[AUTORANGE_KEY] = autorange
462 self[T_PER_DIV_KEY] = t_scale
463 self[X_PER_DIV_KEY] = v_scale
464 self[Y_PER_DIV_KEY] = v_scale
466 self[X_OFF_KEY] = v_offset
467 self[Y_OFF_KEY] = v_offset
471 self[FRAME_RATE_KEY] = frame_rate
472 self[TRIGGER_LEVEL_KEY] = 0
473 self[TRIGGER_CHANNEL_KEY] = 0
474 self[TRIGGER_MODE_KEY] = gr.gr_TRIG_MODE_AUTO
475 self[TRIGGER_SLOPE_KEY] = gr.gr_TRIG_SLOPE_POS
476 self[T_FRAC_OFF_KEY] = 0.5
477 self[USE_PERSISTENCE_KEY] = use_persistence
478 self[PERSIST_ALPHA_KEY] = persist_alpha
479 for i in range(num_inputs):
480 self.proxy(common.index_key(AC_COUPLE_KEY, i), controller, common.index_key(ac_couple_key, i))
482 wx.Panel.__init__(self, parent, style=wx.SIMPLE_BORDER)
483 self.plotter = plotter.channel_plotter(self)
484 self.plotter.SetSize(wx.Size(*size))
485 self.plotter.set_title(title)
486 self.plotter.enable_legend(True)
487 self.plotter.enable_point_label(True)
488 self.plotter.enable_grid_lines(True)
489 self.plotter.set_use_persistence(use_persistence)
490 self.plotter.set_persist_alpha(persist_alpha)
491 #setup the box with plot and controls
492 self.control_panel = control_panel(self)
493 main_box = wx.BoxSizer(wx.HORIZONTAL)
494 main_box.Add(self.plotter, 1, wx.EXPAND)
495 main_box.Add(self.control_panel, 0, wx.EXPAND)
496 self.SetSizerAndFit(main_box)
497 #register events for message
498 self.subscribe(MSG_KEY, self.handle_msg)
499 #register events for grid
500 for key in [common.index_key(MARKER_KEY, i) for i in range(self.num_inputs)] + [
501 TRIGGER_LEVEL_KEY, TRIGGER_MODE_KEY,
502 T_PER_DIV_KEY, X_PER_DIV_KEY, Y_PER_DIV_KEY,
503 T_OFF_KEY, X_OFF_KEY, Y_OFF_KEY,
504 T_DIVS_KEY, X_DIVS_KEY, Y_DIVS_KEY,
505 XY_MODE_KEY, AUTORANGE_KEY, T_FRAC_OFF_KEY,
506 TRIGGER_SHOW_KEY, XY_MARKER_KEY, X_CHANNEL_KEY, Y_CHANNEL_KEY,
507 ]: self.subscribe(key, self.update_grid)
508 #register events for plotter settings
509 self.subscribe(USE_PERSISTENCE_KEY, self.plotter.set_use_persistence)
510 self.subscribe(PERSIST_ALPHA_KEY, self.plotter.set_persist_alpha)
514 def handle_msg(self, msg):
516 Handle the message from the scope sink message queue.
517 Plot the list of arrays of samples onto the grid.
518 Each samples array gets its own channel.
519 @param msg the time domain data as a character array
521 if not self[RUNNING_KEY]: return
523 if time.time() - self.frame_rate_ts < 1.0/self[FRAME_RATE_KEY]: return
524 #convert to floating point numbers
525 samples = numpy.fromstring(msg, numpy.float32)
526 #extract the trigger offset
527 self.trigger_offset = samples[-1]
528 samples = samples[:-1]
529 samps_per_ch = len(samples)/self.num_inputs
530 self.sampleses = [samples[samps_per_ch*i:samps_per_ch*(i+1)] for i in range(self.num_inputs)]
532 self.handle_samples()
533 self.frame_rate_ts = time.time()
535 def set_auto_trigger_level(self, *args):
537 Use the current trigger channel and samples to calculate the 50% level.
539 if not self.sampleses: return
540 samples = self.sampleses[self[TRIGGER_CHANNEL_KEY]]
541 self[TRIGGER_LEVEL_KEY] = (numpy.max(samples)+numpy.min(samples))/2
543 def handle_samples(self):
545 Handle the cached samples from the scope input.
546 Perform ac coupling, triggering, and auto ranging.
548 if not self.sampleses: return
549 sampleses = self.sampleses
550 if self[XY_MODE_KEY]:
551 self[DECIMATION_KEY] = 1
552 x_samples = sampleses[self[X_CHANNEL_KEY]]
553 y_samples = sampleses[self[Y_CHANNEL_KEY]]
555 if self[AUTORANGE_KEY] and time.time() - self.autorange_ts > AUTORANGE_UPDATE_RATE:
556 x_min, x_max = common.get_min_max(x_samples)
557 y_min, y_max = common.get_min_max(y_samples)
558 #adjust the x per div
559 x_per_div = common.get_clean_num((x_max-x_min)/self[X_DIVS_KEY])
560 if x_per_div != self[X_PER_DIV_KEY]: self[X_PER_DIV_KEY] = x_per_div; return
562 x_off = x_per_div*round((x_max+x_min)/2/x_per_div)
563 if x_off != self[X_OFF_KEY]: self[X_OFF_KEY] = x_off; return
564 #adjust the y per div
565 y_per_div = common.get_clean_num((y_max-y_min)/self[Y_DIVS_KEY])
566 if y_per_div != self[Y_PER_DIV_KEY]: self[Y_PER_DIV_KEY] = y_per_div; return
568 y_off = y_per_div*round((y_max+y_min)/2/y_per_div)
569 if y_off != self[Y_OFF_KEY]: self[Y_OFF_KEY] = y_off; return
570 self.autorange_ts = time.time()
572 self.plotter.set_waveform(
574 samples=(x_samples, y_samples),
575 color_spec=CHANNEL_COLOR_SPECS[0],
576 marker=self[XY_MARKER_KEY],
578 #turn off each waveform
579 for i, samples in enumerate(sampleses):
580 self.plotter.clear_waveform(channel='Ch%d'%(i+1))
583 if self[AUTORANGE_KEY] and time.time() - self.autorange_ts > AUTORANGE_UPDATE_RATE:
584 bounds = [common.get_min_max(samples) for samples in sampleses]
585 y_min = numpy.min([bound[0] for bound in bounds])
586 y_max = numpy.max([bound[1] for bound in bounds])
587 #adjust the y per div
588 y_per_div = common.get_clean_num((y_max-y_min)/self[Y_DIVS_KEY])
589 if y_per_div != self[Y_PER_DIV_KEY]: self[Y_PER_DIV_KEY] = y_per_div; return
591 y_off = y_per_div*round((y_max+y_min)/2/y_per_div)
592 if y_off != self[Y_OFF_KEY]: self[Y_OFF_KEY] = y_off; return
593 self.autorange_ts = time.time()
594 #number of samples to scale to the screen
595 actual_rate = self.get_actual_rate()
596 time_span = self[T_PER_DIV_KEY]*self[T_DIVS_KEY]
597 num_samps = int(round(time_span*actual_rate))
598 #handle the time offset
599 t_off = self[T_FRAC_OFF_KEY]*(len(sampleses[0])/actual_rate - time_span)
600 if t_off != self[T_OFF_KEY]: self[T_OFF_KEY] = t_off; return
601 samps_off = int(round(actual_rate*self[T_OFF_KEY]))
602 #adjust the decim so that we use about half the samps
603 self[DECIMATION_KEY] = int(round(
604 time_span*self[SAMPLE_RATE_KEY]/(0.5*len(sampleses[0]))
607 #num samps too small, auto increment the time
608 if num_samps < 2: self[T_PER_DIV_KEY] = common.get_clean_incr(self[T_PER_DIV_KEY])
609 #num samps in bounds, plot each waveform
610 elif num_samps <= len(sampleses[0]):
611 for i, samples in enumerate(sampleses):
613 self.plotter.set_waveform(
614 channel='Ch%d'%(i+1),
615 samples=samples[samps_off:num_samps+samps_off],
616 color_spec=CHANNEL_COLOR_SPECS[i],
617 marker=self[common.index_key(MARKER_KEY, i)],
618 trig_off=self.trigger_offset,
621 self.plotter.clear_waveform(channel='XY')
622 #keep trigger level within range
623 if self[TRIGGER_LEVEL_KEY] > self.get_y_max():
624 self[TRIGGER_LEVEL_KEY] = self.get_y_max(); return
625 if self[TRIGGER_LEVEL_KEY] < self.get_y_min():
626 self[TRIGGER_LEVEL_KEY] = self.get_y_min(); return
627 #disable the trigger channel
628 if not self[TRIGGER_SHOW_KEY] or self[XY_MODE_KEY] or self[TRIGGER_MODE_KEY] == gr.gr_TRIG_MODE_FREE:
629 self.plotter.clear_waveform(channel='Trig')
630 else: #show trigger channel
631 trigger_level = self[TRIGGER_LEVEL_KEY]
632 trigger_point = (len(self.sampleses[0])-1)/self.get_actual_rate()/2.0
633 self.plotter.set_waveform(
636 [self.get_t_min(), trigger_point, trigger_point, trigger_point, trigger_point, self.get_t_max()],
637 [trigger_level, trigger_level, self.get_y_max(), self.get_y_min(), trigger_level, trigger_level]
639 color_spec=TRIGGER_COLOR_SPEC,
642 self.plotter.update()
644 def get_actual_rate(self): return 1.0*self[SAMPLE_RATE_KEY]/self[DECIMATION_KEY]
645 def get_t_min(self): return self[T_OFF_KEY]
646 def get_t_max(self): return self[T_PER_DIV_KEY]*self[T_DIVS_KEY] + self[T_OFF_KEY]
647 def get_x_min(self): return -1*self[X_PER_DIV_KEY]*self[X_DIVS_KEY]/2.0 + self[X_OFF_KEY]
648 def get_x_max(self): return self[X_PER_DIV_KEY]*self[X_DIVS_KEY]/2.0 + self[X_OFF_KEY]
649 def get_y_min(self): return -1*self[Y_PER_DIV_KEY]*self[Y_DIVS_KEY]/2.0 + self[Y_OFF_KEY]
650 def get_y_max(self): return self[Y_PER_DIV_KEY]*self[Y_DIVS_KEY]/2.0 + self[Y_OFF_KEY]
652 def update_grid(self, *args):
654 Update the grid to reflect the current settings:
655 xy divisions, xy offset, xy mode setting
657 if self[T_FRAC_OFF_KEY] < 0: self[T_FRAC_OFF_KEY] = 0; return
658 if self[T_FRAC_OFF_KEY] > 1: self[T_FRAC_OFF_KEY] = 1; return
659 if self[XY_MODE_KEY]:
661 self.plotter.set_x_label('Ch%d'%(self[X_CHANNEL_KEY]+1))
662 self.plotter.set_x_grid(self.get_x_min(), self.get_x_max(), self[X_PER_DIV_KEY])
664 self.plotter.set_y_label('Ch%d'%(self[Y_CHANNEL_KEY]+1))
665 self.plotter.set_y_grid(self.get_y_min(), self.get_y_max(), self[Y_PER_DIV_KEY])
668 self.plotter.set_x_label('Time', 's')
669 self.plotter.set_x_grid(self.get_t_min(), self.get_t_max(), self[T_PER_DIV_KEY], True)
671 self.plotter.set_y_label('Counts')
672 self.plotter.set_y_grid(self.get_y_min(), self.get_y_max(), self[Y_PER_DIV_KEY])
673 #redraw current sample
674 self.handle_samples()