def test_QTriggeredOscilloscope():
app = pg.mkQApp()
dev = NumpyDeviceBuffer()
dev.configure(
nb_channel=nb_channel,
sample_interval=1. / sample_rate,
chunksize=chunksize,
buffer=buffer,
timeaxis=1,
)
dev.output.configure(protocol='tcp',
interface='127.0.0.1',
transfermode='sharedarray',
sharedarray_shape=(nb_channel, 2048 * 50),
ring_buffer_method='double',
timeaxis=1,
dtype='float32')
dev.initialize()
viewer = QTriggeredOscilloscope()
viewer.configure(with_user_dialog=True)
viewer.input.connect(dev.output)
viewer.initialize()
viewer.show()
viewer.trigger.params['threshold'] = 1.
viewer.trigger.params['debounce_mode'] = 'after-stable'
viewer.trigger.params['front'] = '+'
viewer.trigger.params['debounce_time'] = 0.1
viewer.triggeraccumulator.params['stack_size'] = 3
viewer.triggeraccumulator.params['left_sweep'] = -.2
viewer.triggeraccumulator.params['right_sweep'] = .5
viewer2 = QOscilloscope()
viewer2.configure(with_user_dialog=True)
viewer2.input.connect(dev.output)
viewer2.initialize()
viewer2.show()
def terminate():
viewer.stop()
viewer2.stop()
dev.stop()
viewer.close()
viewer2.close()
dev.close()
app.quit()
dev.start()
viewer.start()
viewer2.start()
# start for a while
timer = QtCore.QTimer(singleShot=True, interval=2000)
timer.timeout.connect(terminate)
timer.start()
app.exec_()
def make_pyacq_device_from_buffer(sigs, sample_rate, nodegroup = None, chunksize=1024):
length, nb_channel = sigs.shape
length -= length%chunksize
sigs = sigs[:length, :]
dtype = sigs.dtype
if nodegroup is None:
dev = NumpyDeviceBuffer()
else:
dev = nodegroup.create_node('NumpyDeviceBuffer')
dev.configure(nb_channel=nb_channel, sample_interval=1./sample_rate, chunksize=chunksize, buffer=sigs)
dev.output.configure(protocol='tcp', interface='127.0.0.1', transfermode='plaindata')
dev.initialize()
return dev
def test_QDigitalOscilloscope():
app = pg.mkQApp()
length = int(sample_rate*200)
t = np.arange(length)/sample_rate
buffer = np.zeros((length, 3), dtype='uint8')
nb_channel = buffer.shape[1]*8
for i in range(nb_channel):
b = i//8
mask = 1 << i%8
cycle_size = int((i+1)*sample_rate/2)
period = np.concatenate([np.zeros(cycle_size, dtype='uint8'), np.ones(cycle_size, dtype='uint8')] * int(1+length/cycle_size/2))[:length]
buffer[:, b] += period*mask
#~ print(buffer.shape, buffer.dtype)
#~ exit()
channel_info = [ {'name': 'di{}'.format(c)} for c in range(nb_channel) ]
dev =NumpyDeviceBuffer()
dev.configure(nb_channel=buffer.shape[1], sample_interval=1./sample_rate, chunksize=chunksize, buffer=buffer)
dev.output.configure(protocol='tcp', interface='127.0.0.1', transfermode='plaindata')
# hack for channel names
dev.output.params['channel_info'] = channel_info
dev.initialize()
viewer = QDigitalOscilloscope()
#~ viewer = QOscilloscope()
viewer.configure(with_user_dialog=True)
viewer.input.connect(dev.output)
viewer.initialize()
viewer.show()
def terminate():
viewer.stop()
dev.stop()
viewer.close()
dev.close()
app.quit()
dev.start()
viewer.start()
# start for a while
timer = QtCore.QTimer(singleShot=True, interval=2000)
timer.timeout.connect(terminate)
timer.start()
app.exec_()
def make_pyacq_device_from_buffer(sigs,
sample_rate,
nodegroup=None,
chunksize=1024):
length, nb_channel = sigs.shape
length -= length % chunksize
sigs = sigs[:length, :]
dtype = sigs.dtype
channel_names = ['channel{}'.format(c) for c in range(sigs.shape[1])]
if nodegroup is None:
dev = NumpyDeviceBuffer()
else:
dev = nodegroup.create_node('NumpyDeviceBuffer')
dev.configure(nb_channel=nb_channel,
sample_interval=1. / sample_rate,
chunksize=chunksize,
buffer=sigs,
channel_names=channel_names)
dev.output.configure(protocol='tcp',
interface='127.0.0.1',
transfermode='plaindata')
dev.initialize()
return dev
def test_QTriggeredOscilloscope():
app = pg.mkQApp()
dev = NumpyDeviceBuffer()
dev.configure(nb_channel=nb_channel, sample_interval=1./sample_rate, chunksize=chunksize,
buffer=buffer, timeaxis=1,)
dev.output.configure(protocol='tcp', interface='127.0.0.1', transfermode='sharedarray',
sharedarray_shape=(nb_channel, 2048*50), ring_buffer_method = 'double', timeaxis = 1,
dtype = 'float32')
dev.initialize()
viewer = QTriggeredOscilloscope()
viewer.configure(with_user_dialog=True)
viewer.input.connect(dev.output)
viewer.initialize()
viewer.show()
viewer.trigger.params['threshold'] = 1.
viewer.trigger.params['debounce_mode'] = 'after-stable'
viewer.trigger.params['front'] = '+'
viewer.trigger.params['debounce_time'] = 0.1
viewer.triggeraccumulator.params['stack_size'] = 3
viewer.triggeraccumulator.params['left_sweep'] = -.2
viewer.triggeraccumulator.params['right_sweep'] = .5
viewer2 = QOscilloscope()
viewer2.configure(with_user_dialog=True)
viewer2.input.connect(dev.output)
viewer2.initialize()
viewer2.show()
def terminate():
viewer.stop()
viewer2.stop()
dev.stop()
viewer.close()
viewer2.close()
dev.close()
app.quit()
dev.start()
viewer.start()
viewer2.start()
# start for a while
timer = QtCore.QTimer(singleShot=True, interval=2000)
timer.timeout.connect(terminate)
timer.start()
app.exec_()
# Not necessary for this example, but registering the node class would make it
# easier for us to instantiate this type of node in a remote process via
# Manager.create_node()
register_node_type(StreamMonitor)
if __name__ == '__main__':
from pyacq.devices import NumpyDeviceBuffer
app = QtGui.QApplication([])
# Create a data source. This will continuously emit chunks from a numpy
# array.
data = np.random.randn(2500, 7).astype('float64')
dev = NumpyDeviceBuffer()
# Configure the source such that it emits 50-element chunks twice per second.
dev.configure(nb_channel=7, sample_interval=0.01, chunksize=50, buffer=data)
dev.output.configure(protocol='tcp', interface='127.0.0.1', transfermode='plaindata')
dev.initialize()
# Create a monitor node
mon = StreamMonitor()
mon.configure()
mon.input.connect(dev.output)
mon.initialize()
# start both nodes
mon.start()
dev.start()
