def _event_dataready(self, fd):
utils.eventfd_clear(fd)
scp = self._scp
channel_count = len(scp.channels)
start = 0
length = scp._record_length - start
# Get data
pointers = libtiepie.api.HlpPointerArrayNew(channel_count)
data = [None for i in range(channel_count)]
try:
for i in range(channel_count):
if scp._active_channels[i]:
data[i] = np.empty(length, dtype=np.float32)
libtiepie.api.HlpPointerArraySet(pointers, i, data[i].ctypes.data)
libtiepie.api.ScpGetData(scp._handle, pointers, channel_count, start, length)
finally:
libtiepie.api.HlpPointerArrayDelete(pointers)
self.sweepCount +=1
if self.statusbar:
self.statusBar().showMessage('Sweeps:'+str(self.sweepCount))
# Plot data
'''
for chnum in range(len(self._scp.channels)):
logging.debug('data '+str(chnum)+':\n'+str(data[0]))
logging.debug('data '+str(chnum)+str(self.gain[0])+':\n'+str(data[0]/self.gain[0]))
'''
i = 0
if self.persistency == 1:
#TODO remove previous waveforms instead of replotting
self.plot.clear()
logging.debug('plot cleared')
self._replot()
#&RA/for chnum, chdata in zip(range(len(self._scp.channels)), data):
for chnum in range(len(self._scp.channels)):
if self._scp.channels[chnum].enabled:
chdata = data[chnum]/self.gain[chnum] + self.offset[chnum]
if chdata is not None:
ch = self._scp.channels[chnum]
legend = str(chnum)
logging.debug('chdata['+str(chnum)+']['+str(length)+'] '+legend+' =\n'+str(chdata))
#&RA/plot.plot(y=chdata, pen=LINE_COLORS[chnum % len(LINE_COLORS)])
#print(self.stepMode)
self.plot.plot(x=range(length-1+self.stepMode),y=chdata[:-1], pen=LINE_COLORS[chnum % len(LINE_COLORS)],stepMode=(self.stepMode==1))
i += 1
ch = self._scp.channels[chnum]
logging.debug('ch'+str(chnum)+' min,max='+str(ch.data_value_min)+','+str(ch.data_value_max))
if self._continuous:
self._scp.start()
def _event_dataready(self, fd):
utils.eventfd_clear(fd)
scp = self._scp
channel_count = len(scp.channels)
start = 0
length = scp._record_length - start
# Get data
pointers = libtiepie.api.HlpPointerArrayNew(channel_count)
data = [None for i in range(channel_count)]
try:
for i in range(channel_count):
if scp._active_channels[i]:
data[i] = np.empty(length, dtype=np.float32)
libtiepie.api.HlpPointerArraySet(pointers, i, data[i].ctypes.data)
libtiepie.api.ScpGetData(scp._handle, pointers, channel_count, start, length)
finally:
libtiepie.api.HlpPointerArrayDelete(pointers)
# Plot data
glw = self.centralWidget()
timebase = np.linspace(0, scp._record_length / self._sample_frequency, scp._record_length, endpoint=False)
i = 0
for chnum, chdata in zip(range(len(self._scp.channels)), data):
if chdata is not None:
plot = glw.getItem(i, 0)
if plot:
plot.clear()
else:
plot = glw.addPlot(i, 0)
self._setup_plot(plot)
ch = self._scp.channels[chnum]
plot.plot(y=chdata, x=timebase, pen=LINE_COLORS[chnum % len(LINE_COLORS)])
plot.setYRange(ch.data_value_min, ch.data_value_max)
i += 1
# Remove unused plots:
plot = glw.getItem(i, 0)
while plot is not None:
glw.removeItem(plot)
plot = glw.getItem(i, 0)
if self._continuous:
self._do_start(self._continuous)
