def session(request):
s = Session(add_all=False)
s, _ = _add_device(s)
yield s
# force session destruction
s._close()
def session(request):
"""Default session adding all attached devices."""
s = Session()
yield s
# force session destruction
s._close()
def test_read_initial_data():
"""Verify data values of HI-Z samples on initial attach.
See https://github.com/analogdevicesinc/m1k-fw/issues/9 for details.
"""
sys.stdout.write('\n')
prompt(
'unplug the device, ground the metal USB connector, and plug it back in'
)
# create our own session to avoid detach exceptions
session = Session(add_all=False)
session, device = _add_device(session)
samples = device.get_samples(100)
assert len(samples) == 100
# verify all samples are near 0
tests = []
for sample in samples:
for x in chain.from_iterable(sample):
tests.append(abs(round(x)) == 0)
# old firmware versions exhibit bad data, newer versions should fix the issue
if float(device.fwver) <= 2.10:
assert not all(tests)
else:
assert all(tests)
# request a bunch of extra samples to flush bad values
device.get_samples(10000)
# force session destruction
session._close()
def session(request):
s = Session(add_all=False)
if s.scan() == 0:
# no devices plugged in
raise ValueError
s.add(s.available_devices[0])
yield s
# force session destruction
s._close()
def test_read_continuous_dataflow_raises():
"""Verify workflows that lead to data flow issues."""
# create a session that doesn't ignore data flow issues
session = Session(add_all=False, ignore_dataflow=False)
session.scan()
session.add(session.available_devices[0])
device = session.devices[0]
session.start(0)
time.sleep(.5)
with pytest.raises(SampleDrop):
device.read(1000)
# force session destruction
session._close()
def session():
s = Session(add_all=False)
yield s
# force session destruction
s._close()
def session(request):
s = Session()
yield s
# force session destruction
s._close()