class Scope_Widget(QtWidgets.QWidget):
def __init__(self, parent, logger = PrintLogger()):
super().__init__(parent)
self.audiobuffer = None
self.logger = logger
self.setObjectName("Scope_Widget")
self.gridLayout = QtWidgets.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
self.PlotZoneUp = TimePlot(self, self.logger)
self.PlotZoneUp.setObjectName("PlotZoneUp")
self.gridLayout.addWidget(self.PlotZoneUp, 0, 0, 1, 1)
self.settings_dialog = Scope_Settings_Dialog(self, self.logger)
self.timerange = DEFAULT_TIMERANGE
self.time = zeros(10)
self.y = zeros(10)
self.y2 = zeros(10)
# method
def set_buffer(self, buffer):
self.audiobuffer = buffer
def handle_new_data(self, floatdata):
time = self.timerange*1e-3
width = int(time*SAMPLING_RATE)
#basic trigger capability on leading edge
floatdata = self.audiobuffer.data(2*width)
#number of data points received at the last audio buffer update
#newpoints = self.audiobuffer.newpoints
#print newpoints
# because of the buffering, sometimes we have not got any data
#if newpoints==0:
# return
#floatdata = self.audiobuffer.data(newpoints + width)
twoChannels = False
if floatdata.shape[0] > 1:
twoChannels = True
# trigger on the first channel only
triggerdata = floatdata[0,:]
# trigger on half of the waveform
trig_search_start = width/2
trig_search_stop = -width/2
triggerdata = triggerdata[trig_search_start : trig_search_stop]
max = floatdata.max()
trigger_level = max*2./3.
#trigger_level = 0.6
trigger_pos = where((triggerdata[:-1] < trigger_level)*(triggerdata[1:] >= trigger_level))[0]
if len(trigger_pos)==0:
return
if len(trigger_pos) > 0:
shift = trigger_pos[0]
else:
#return
shift = 0
shift += trig_search_start
datarange = width
floatdata = floatdata[:, shift - datarange/2: shift + datarange/2]
self.y = floatdata[0,:] #- floatdata.mean()
if twoChannels:
self.y2 = floatdata[1,:] #- floatdata.mean()
else:
self.y2 = None
dBscope = False
if dBscope:
dBmin = -50.
self.y = sign(self.y)*(20*log10(abs(self.y))).clip(dBmin, 0.)/(-dBmin) + sign(self.y)*1.
if twoChannels:
self.y2 = sign(self.y2)*(20*log10(abs(self.y2))).clip(dBmin, 0.)/(-dBmin) + sign(self.y2)*1.
else:
self.y2 = None
self.time = (arange(len(self.y)) - datarange/2)/float(SAMPLING_RATE)
if self.y2 is not None:
self.PlotZoneUp.setdataTwoChannels(self.time, self.y, self.y2)
else:
self.PlotZoneUp.setdata(self.time, self.y)
# method
def canvasUpdate(self):
return
def pause(self):
self.PlotZoneUp.pause()
def restart(self):
self.PlotZoneUp.restart()
# slot
def set_timerange(self, timerange):
self.timerange = timerange
# slot
def settings_called(self, checked):
self.settings_dialog.show()
# method
def saveState(self, settings):
self.settings_dialog.saveState(settings)
# method
def restoreState(self, settings):
self.settings_dialog.restoreState(settings)
class Scope_Widget(QtWidgets.QWidget):
name = "Oscilloscope"
def __init__(self, parent, logger=PrintLogger()):
super().__init__(parent)
self.logger = logger
self.setObjectName(self.name)
self.gridLayout = QtWidgets.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
self.PlotZoneUp = TimePlot(self, self.logger)
self.PlotZoneUp.setObjectName("PlotZoneUp")
self.gridLayout.addWidget(self.PlotZoneUp, 0, 0, 1, 1)
self.settings_dialog = Scope_Settings_Dialog(self, self.logger)
self.time_range_s = DEFAULT_TIMERANGE * 0.001
self.num_sample_points = int(self.time_range_s * SAMPLING_RATE)
self.time = numpy.linspace(0, self.time_range_s, self.num_sample_points)
# Keep a small display buffer so we can use triggering in the data display.
self.display_buffer = RingBuffer(1, 2*self.num_sample_points)
def handle_new_data(self, floatdata):
self.display_buffer.push(floatdata)
data = self.display_buffer.unwound_data()
is_dual_channel = data.shape[0] == 2
# trigger on the first channel only
trigger_data = data[0, :]
# trigger on half of the waveform
half_sample = int(self.num_sample_points/2)
trig_search_start = half_sample
trig_search_stop = -half_sample
trigger_data = trigger_data[trig_search_start:trig_search_stop]
trigger_level = data.max() * 2. / 3.
trigger_pos = numpy.where((trigger_data[:-1] < trigger_level) * (trigger_data[1:] >= trigger_level))[0]
if len(trigger_pos) > 0:
shift = trigger_pos[0]
else:
return
shift += trig_search_start
data = data[:, shift - half_sample: shift + half_sample]
y = data[0, :]
if is_dual_channel:
y2 = data[1, :]
else:
y2 = None
dBscope = False
if dBscope:
dBmin = -50.
y = numpy.sign(y) * (20 * numpy.log10(
abs(y))).clip(dBmin, 0.) / (-dBmin) + numpy.sign(y) * 1.
if is_dual_channel:
y2 = numpy.sign(y2) * (20 * numpy.log10(
abs(y2))).clip(dBmin, 0.) / (-dBmin) + numpy.sign(y2) * 1.
else:
y2 = None
if y2 is not None:
self.PlotZoneUp.setdataTwoChannels(self.time, y, y2)
else:
self.PlotZoneUp.setdata(self.time, y)
# method
def canvasUpdate(self):
return
def pause(self):
self.PlotZoneUp.pause()
def restart(self):
self.PlotZoneUp.restart()
# slot
def set_timerange(self, timerange):
self.time_range_s = timerange*0.001
self.num_sample_points = int(self.time_range_s * SAMPLING_RATE)
self.time = numpy.linspace(0, self.time_range_s, self.num_sample_points)
self.display_buffer.reset(self.display_buffer.num_channels, self.num_sample_points)
# slot
def settings_called(self, checked):
self.settings_dialog.show()
# method
def saveState(self, settings):
self.settings_dialog.saveState(settings)
# method
def restoreState(self, settings):
self.settings_dialog.restoreState(settings)
class Scope_Widget(QtWidgets.QWidget):
def __init__(self, parent, logger=PrintLogger()):
super().__init__(parent)
self.audiobuffer = None
self.logger = logger
self.setObjectName("Scope_Widget")
self.gridLayout = QtWidgets.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
self.PlotZoneUp = TimePlot(self, self.logger)
self.PlotZoneUp.setObjectName("PlotZoneUp")
self.gridLayout.addWidget(self.PlotZoneUp, 0, 0, 1, 1)
self.settings_dialog = Scope_Settings_Dialog(self, self.logger)
self.timerange = DEFAULT_TIMERANGE
self.time = zeros(10)
self.y = zeros(10)
self.y2 = zeros(10)
# method
def set_buffer(self, buffer):
self.audiobuffer = buffer
def handle_new_data(self, floatdata):
time = self.timerange * 1e-3
width = int(time * SAMPLING_RATE)
# basic trigger capability on leading edge
floatdata = self.audiobuffer.data(2 * width)
twoChannels = False
if floatdata.shape[0] > 1:
twoChannels = True
# trigger on the first channel only
triggerdata = floatdata[0, :]
# trigger on half of the waveform
trig_search_start = width / 2
trig_search_stop = -width / 2
triggerdata = triggerdata[trig_search_start:trig_search_stop]
trigger_level = floatdata.max() * 2. / 3.
trigger_pos = where((triggerdata[:-1] < trigger_level) *
(triggerdata[1:] >= trigger_level))[0]
if len(trigger_pos) == 0:
return
if len(trigger_pos) > 0:
shift = trigger_pos[0]
else:
shift = 0
shift += trig_search_start
datarange = width
floatdata = floatdata[:, shift - datarange / 2:shift + datarange / 2]
self.y = floatdata[0, :]
if twoChannels:
self.y2 = floatdata[1, :]
else:
self.y2 = None
dBscope = False
if dBscope:
dBmin = -50.
self.y = sign(self.y) * (20 * log10(abs(self.y))).clip(
dBmin, 0.) / (-dBmin) + sign(self.y) * 1.
if twoChannels:
self.y2 = sign(self.y2) * (20 * log10(abs(self.y2))).clip(
dBmin, 0.) / (-dBmin) + sign(self.y2) * 1.
else:
self.y2 = None
self.time = (arange(len(self.y)) -
datarange / 2) / float(SAMPLING_RATE)
if self.y2 is not None:
self.PlotZoneUp.setdataTwoChannels(self.time * 1e3, self.y,
self.y2)
else:
self.PlotZoneUp.setdata(self.time * 1e3, self.y)
# method
def canvasUpdate(self):
return
def pause(self):
self.PlotZoneUp.pause()
def restart(self):
self.PlotZoneUp.restart()
# slot
def set_timerange(self, timerange):
self.timerange = timerange
# slot
def settings_called(self, checked):
self.settings_dialog.show()
# method
def saveState(self, settings):
self.settings_dialog.saveState(settings)
# method
def restoreState(self, settings):
self.settings_dialog.restoreState(settings)
