def prim_voltage(self, channel=0):
if not self.hw in [XO1, XO15, XO175, XO30, XO4] or not self._status:
return 0
if not self._voltage_init:
mode, bias, gain, boost = self.PARAMETERS[SENSOR_DC_NO_BIAS]
self.audiograb = AudioGrab(self.new_buffer, self,
mode, bias, gain, boost)
self._channels = self.audiograb.channels
for i in range(self._channels):
self.ringbuffer.append(RingBuffer1d(self.max_samples,
dtype='int16'))
self.audiograb.start_grabbing()
self.audio_started = True
self._voltage_init = True
if self.hw in [XO1, XO4]:
self._prim_voltage(0)
return self._voltage[0]
elif self.hw == XO15:
self._prim_voltage(channel)
return self._voltage[channel]
# FIXME: For XO175: channel assignment is seemingly random
# (#3675), one of them will be 0
else:
self._prim_voltage(0)
if self._voltage[0] != 0:
return self._voltage[0]
else:
self._prim_voltage(1)
return self._voltage[1]
def start(self):
''' Start grabbing audio if there is an audio block in use '''
if not self._status:
return
self._sound = [0, 0]
self._volume = [0, 0]
self._pitch = [0, 0]
self._resistance = [0, 0]
self._voltage = [0, 0]
if self.audio_started:
self.audiograb.stop_grabbing()
if len(
self._parent.block_list.get_similar_blocks(
'block', ['volume', 'sound', 'pitch'])) > 0:
mode, bias, gain, boost = self.PARAMETERS[SENSOR_AC_BIAS]
elif len(
self._parent.block_list.get_similar_blocks(
'block', ['resistance', 'resistance2'])) > 0:
mode, bias, gain, boost = self.PARAMETERS[SENSOR_DC_BIAS]
elif len(
self._parent.block_list.get_similar_blocks(
'block', ['voltage', 'voltage2'])) > 0:
mode, bias, gain, boost = self.PARAMETERS[SENSOR_DC_NO_BIAS]
else:
return # No audio blocks in use.
self.audiograb = AudioGrab(self.new_buffer, self, mode, bias, gain,
boost)
self._channels = self.audiograb.channels
for i in range(self._channels):
self.ringbuffer.append(
RingBuffer1d(self.max_samples, dtype='int16'))
self.audiograb.start_grabbing()
self.audio_started = True
def _init_sound(self):
if not self._sound_init:
mode, bias, gain, boost = self.PARAMETERS[SENSOR_AC_BIAS]
self.audiograb = AudioGrab(self.new_buffer, self,
mode, bias, gain, boost)
self._channels = self.audiograb.channels
for i in range(self._channels):
self.ringbuffer.append(RingBuffer1d(self.max_samples,
dtype='int16'))
self.audiograb.start_grabbing()
self.audio_started = True
self._sound_init = True