class TimingStampController(SweepSequeTriggerController):
def __init__(self,*args,**kwargs):
super(TimingStampController, self).__init__(*args,**kwargs)
self.gp = self.stimulus.gp
self.indexed_pha = IndexedParam('phase_at_t0')
self.logger = logging.getLogger('LightStim.Grating')
def during_go_eval(self):
stimulus_on = self.next_param()
# 16-bits stimulus representation code will be posted to DAQ port
# 00 1 1 0000 0000 0000
# | | | |-----------------phase_at_t0 index (0.0, 360.0, 16)
# | | |---------------------stimulus onset
# | |-----------------------stimulus viewport
# |--------------------------reserved
if self.viewport.get_name() == 'left':
viewport = 1
elif self.viewport.get_name() == 'right':
viewport = 0
else:
self.logger.error('Currently TimingStamp can only support left and right viewport.')
# lower 12 bits and upper 2 bits are reserved
if stimulus_on:
onset = 1
else:
onset = 0
phase = self.gp.phase_at_t0
if phase in self.indexed_pha:
pha_index = self.indexed_pha.index(phase)
else:
pha_index = 0
post_val = (viewport << 13) + (onset << 12) + (pha_index << 8)
self.post_stamp(post_val)
class ParamStampController(SweepSequeTriggerController):
def __init__(self,*args,**kwargs):
super(ParamStampController, self).__init__(*args,**kwargs)
self.indexed_ori = IndexedParam('orientation')
self.indexed_sfq = IndexedParam('spatial_freq')
self.indexed_pha = IndexedParam('phase_at_t0')
self.logger = logging.getLogger('LightStim.Grating')
def during_go_eval(self):
post_val = self.get_post_val()
if self.stimulus.trigger and post_val is not None:
self.post_stamp(post_val)
def get_post_val(self):
next_param = self.next_param()
if next_param is not None and not any(num != num for num in next_param):
orientation, spatial_freq, phase_at_t0 = next_param
ori_index, spf_index, pha_index = 0,0,0
if orientation in self.indexed_ori:
ori_index = self.indexed_ori.index(orientation)
#else: self.logger.error('Cannot post param index for orientation parameter: %s' %str(orientation))
if spatial_freq in self.indexed_sfq:
spf_index = self.indexed_sfq.index(spatial_freq)
#else: self.logger.error('Cannot post param index for spatial freqency parameter: %s' %str(spatial_freq))
if phase_at_t0 in self.indexed_pha:
pha_index = self.indexed_pha.index(phase_at_t0)
#else: self.logger.error('Cannot post param index for phase parameter: %s' %str(phase_at_t0))
# 16-bits stimulus representation code will be posted to DT port
# 00 0 1 0101 0001 0011
# | | | | | |
# | | | | | +------------orientation index (0.0, 180.0, 16)/(0.0, 360.0, 16)
# | | | | +-----------------spatial_freq index (0.05, 1.0, 16)
# | | | +----------------------phase_at_t0 index (0.0, 360.0, 16)
# | | +--------------------------stimulus onset
# | +-----------------------------stimulus offset
# +--------------------------------reserved
onset = 1
post_val = ori_index + (spf_index<<4) + (pha_index<<8) + (onset<<12)
return post_val
else:
offset = 1
post_val = offset<<13
return post_val