def test_event(self):
# ported from C++ test-event
sequence = stadls.DigitalInit()
builder, _ = sequence.generate()
num_spikes = 1000
spike_pack_types = [
[1, halco.SpikePack1ToChipOnDLS, haldls.SpikePack1ToChip],
[2, halco.SpikePack2ToChipOnDLS, haldls.SpikePack2ToChip],
[3, halco.SpikePack3ToChipOnDLS, haldls.SpikePack3ToChip]
]
to_fpga_spike_labels = []
# TODO: introspection would be nicer than hard-coding the types
for spike_type_count, spike_type_coord, spike_type in spike_pack_types:
for i in range(num_spikes):
# TODO: random numbers would be nicer here
labels = [haldls.SpikeLabel(i)] * spike_type_count
spike = spike_type(labels)
builder.write(spike_type_coord(), spike)
builder.write(halco.TimerOnDLS(), haldls.Timer())
builder.block_until(halco.TimerOnDLS(), haldls.Timer.Value(10))
to_fpga_spike_labels.extend(labels)
builder.write(halco.TimerOnDLS(), haldls.Timer())
builder.block_until(halco.TimerOnDLS(), haldls.Timer.Value(1000))
program = builder.done()
with hxcomm.ManagedConnection() as conn:
stadls.run(conn, program)
spikes = program.spikes
# assert 98 % of sent spikes are received again
total_spikes_sent = sum(numpy.array(spike_pack_types)[:, 0]) \
* num_spikes
self.assertGreater(len(spikes), total_spikes_sent * 0.98)
spikes = program.spikes.to_numpy()
self.assertGreater(spikes.shape[0], total_spikes_sent * 0.98)
# count incorrectly received spikes (unknown label)
incorrect_spikes = numpy.sum([
haldls.SpikeLabel(spike["label"]) not in to_fpga_spike_labels
for spike in spikes
])
self.assertLess(incorrect_spikes, 100,
"Too many random spikes were received.")
self.assertEqual(spikes.ndim, 1,
"Expected numpy-wrapped spikes to be 1D")
dtype_tmp = numpy.dtype([('label', numpy.uint16),
('fpga_time', numpy.uint64),
('chip_time', numpy.uint64)])
self.assertEqual(spikes.dtype, dtype_tmp,
"Expect spikes.dtype to be {}".format(str(dtype_tmp)))
self.assertGreater(
spikes.size, total_spikes_sent * 0.98,
"Expected at least {} received spikes".format(total_spikes_sent *
0.98))
def test_board_led_chain(cls):
all_leds = list(iter_all(halco.LEDOnBoard))
builder = stadls.PlaybackProgramBuilder()
# reset chip
builder.write(halco.ResetChipOnDLS(), haldls.ResetChip(True))
builder.write(halco.TimerOnDLS(), haldls.Timer())
builder.block_until(halco.TimerOnDLS(), 10)
builder.write(halco.ResetChipOnDLS(), haldls.ResetChip(False))
# write shiftreg container
shiftreg = haldls.ShiftRegister()
builder.write(halco.ShiftRegisterOnBoard(), shiftreg)
for led in all_leds + list(reversed(all_leds)):
builder.write(halco.TimerOnDLS(), haldls.Timer())
shiftreg.set_enable_led(led, True)
builder.write(halco.ShiftRegisterOnBoard(), shiftreg)
builder.block_until(halco.TimerOnDLS(),
int(fisch.fpga_clock_cycles_per_us * 1e6 / 8))
shiftreg.set_enable_led(led, False)
builder.write(halco.ShiftRegisterOnBoard(), shiftreg)
# pop playback program
program = builder.done()
# execute playback program
with hxcomm.ManagedConnection() as conn:
stadls.run(conn, program)
def test_reinit_stack_entry(self):
builder, _ = stadls.DigitalInit().generate()
builder.block_until(halco.TimerOnDLS(), haldls.Timer.Value(100))
init = builder.done()
builder = stadls.PlaybackProgramBuilder()
builder.block_until(halco.TimerOnDLS(), haldls.Timer.Value(400))
program = builder.done()
with hxcomm.ManagedConnection() as conn:
reinit = stadls.ReinitStackEntry(conn)
reinit.set(init, enforce=True)
stadls.run(conn, program)
def test_madc_sample_rate(self):
"""
Observe the MADC sampling rate in dependency of the MADC configuration,
then compare it to a calculated sample rate based on the configuration.
"""
# define (arbitrary) test values for the MADC config
# defaults are tested via Nones
madc_clock_scale_values = [None, 10, 50, 100, 200, 4095]
sample_duration_adjusts = [0, None, 7]
enable_madc_clock_scalings = [True, False]
# sweep over configuration space and sample dumpy data
for madc_clock_scale_value in madc_clock_scale_values:
for sample_duration_adjust in sample_duration_adjusts:
for enable_madc_clock_scaling in enable_madc_clock_scalings:
builder, _ = stadls.DigitalInit().generate()
# configure MADC
madc_config = haldls.MADCConfig()
madc_config.number_of_samples = 20000
madc_config.enable_dummy_data = True
madc_config.enable_madc_clock_scaling = \
enable_madc_clock_scaling
if sample_duration_adjust is not None:
madc_config.sample_duration_adjust = \
sample_duration_adjust
if madc_clock_scale_value is not None:
madc_config.madc_clock_scale_value = \
madc_clock_scale_value
builder.write(halco.MADCConfigOnDLS(), madc_config)
# calculate expected sample rate from MADC config (Hz)
adpll = haldls.ADPLL()
output = adpll.Output(adpll.Output.dco) # dco
madc_base_frequ = adpll.calculate_output_frequency(output)
calc_rate = madc_config.calculate_sample_rate(
madc_base_frequ) / 1e6 # MHz
# wake up MADC
madc_control = haldls.MADCControl()
madc_control.enable_power_down_after_sampling = False
madc_control.start_recording = False
madc_control.wake_up = True
builder.write(halco.MADCControlOnDLS(), madc_control)
# initial wait, systime sync
initial_wait = 100 # us
builder.write(halco.TimerOnDLS(), haldls.Timer())
builder.write(halco.SystimeSyncOnFPGA(),
haldls.SystimeSync())
builder.block_until(
halco.TimerOnDLS(),
haldls.Timer.Value(
initial_wait *
int(haldls.Timer.Value.fpga_clock_cycles_per_us)))
# trigger MADC sampling, power MADC down once done
madc_control.wake_up = False
madc_control.start_recording = True
madc_control.enable_power_down_after_sampling = True
builder.write(halco.MADCControlOnDLS(), madc_control)
# wait for samples and additional 3 ms
sampling_time = float(madc_config.number_of_samples) / \
calc_rate + 3000 # us
builder.block_until(
halco.TimerOnDLS(),
haldls.Timer.Value(
(initial_wait + int(sampling_time)) *
int(haldls.Timer.Value.fpga_clock_cycles_per_us)))
# run program
program = builder.done()
with hxcomm.ManagedConnection() as conn:
stadls.run(conn, program)
# inspect MADC samples
samples = program.madc_samples.to_numpy()
# drop incorrectly received samples (value 0, issue 3545)
# then sort by chip time
samples = samples[samples["value"] != 0]
samples = numpy.sort(samples,
order=["chip_time", "fpga_time"])
# convert to SI units (us)
sample_times = samples["chip_time"] / \
(float(haldls.Timer.Value.fpga_clock_cycles_per_us))
# get time between two samples
time_between_samples = numpy.diff(sample_times)
# calculate average sample rate from measured samples (MHz)
average_rate = 1 / numpy.mean(time_between_samples)
# compare measurement with prediction and check that the
# error is less than 1%
self.assertAlmostEqual(
average_rate,
calc_rate,
delta=calc_rate * 0.01,
msg="Recorded rate deviates by more than 1% from "
"the calculated one.")
def test_madc_samples(self):
"""
Observe an MADC test pattern and assert it is accessible
through the madc_samples.to_numpy() interface.
Samples are recorded continuously, in order to test more
samples than configurable in the MADC config.
"""
builder, _ = stadls.DigitalInit().generate()
madc_config = haldls.MADCConfig()
madc_config.enable_dummy_data = True
builder.write(halco.MADCConfigOnDLS(), madc_config)
# wake up MADC
madc_control = haldls.MADCControl()
madc_control.enable_power_down_after_sampling = False
madc_control.start_recording = False
madc_control.wake_up = True
builder.write(halco.MADCControlOnDLS(), madc_control)
# initial wait, systime sync
initial_wait = 100 # us
builder.write(halco.TimerOnDLS(), haldls.Timer())
builder.write(halco.SystimeSyncOnFPGA(), haldls.SystimeSync())
builder.block_until(
halco.TimerOnDLS(),
haldls.Timer.Value(
initial_wait *
int(haldls.Timer.Value.fpga_clock_cycles_per_us)))
# trigger MADC sampling, power MADC down once done
madc_control.wake_up = False
madc_control.start_recording = True
madc_control.enable_power_down_after_sampling = False
madc_control.enable_continuous_sampling = True
builder.write(halco.MADCControlOnDLS(), madc_control)
# wait for samples
sampling_time = 40000 # us
builder.block_until(
halco.TimerOnDLS(),
haldls.Timer.Value(
(initial_wait + sampling_time) *
int(haldls.Timer.Value.fpga_clock_cycles_per_us)))
# turn off MADC
madc_control.start_recording = False
madc_control.stop_recording = True
madc_control.enable_power_down_after_sampling = True
builder.write(halco.MADCControlOnDLS(), madc_control)
# run program
program = builder.done()
with hxcomm.ManagedConnection() as conn:
stadls.run(conn, program)
# inspect MADC samples
samples = program.madc_samples.to_numpy()
# drop incorrectly received samples (value 0, issue 3545)
# then sort by chip time
samples = samples[samples["value"] != 0]
samples = numpy.sort(samples, order=["chip_time", "fpga_time"])
# assert number of received samples is as expected,
# assuming a sampling rate of 30 MHz
sampling_rate = 30 # MHz
expected_number_of_samples = \
sampling_time * sampling_rate # us * MHz cancels
self.assertEqual(samples.ndim, 1)
self.assertGreater(len(samples),
int(expected_number_of_samples * 0.95),
"Too few MADC samples recorded.")
expected_dtype = numpy.dtype([('value', numpy.uint64),
('fpga_time', numpy.uint64),
('chip_time', numpy.uint64)])
self.assertEqual(
samples.dtype, expected_dtype,
"Expected samples.dtype to be {}".format(str(expected_dtype)))
# assert sawtooth test pattern is visible in samples
diff = numpy.diff(samples["value"].astype(int))
self.assertAlmostEqual(numpy.mean(diff[diff > 0]),
1,
places=1,
msg="MADC sample values don't increase by 1" +
"on average in sawtooth pattern.")
self.assertLess(
numpy.mean(diff[diff < 0]), -1000,
"MADC samples don't show proper falling edge in sawtooth pattern.")
def test_get_time_info(self):
with hxcomm.ManagedConnection() as connection:
time_info = connection.time_info
reference = hxcomm.ConnectionTimeInfo()
self.assertEqual(time_info, reference)
