def main(device):
'''
This demonstrates the basic Engine interface that we will be using to
communicate with the DAQ hardware. A subclass of the Engine will implement
NI hardware-specific logic. Another subclass will implement MCC
(TBSI)-specific logic. This enables us to write code that does not care
whether it's communicating with a NI or MCC device.
'''
def ao_callback(names, offset, samples):
print('{} samples needed at {} for {}'.format(samples, offset, names))
engine.write_hw_ao(np.zeros(samples))
def ai_callback(names, data):
print('{} samples acquired from {}'.format(data.shape[-1], names))
def et_callback(change, line, event_time):
print('{} edge on {} at {}'.format(change, line, event_time))
queue.put((event_time - 100, 100))
def ai_epoch_callback(names, start, duration, data):
print('Epoch {} acquired with {} samples from {}' \
.format(start, data.shape, names))
queue = Queue.Queue()
engine = Engine()
# Set the polling interval to a high value to minimize clutter on the scren.
engine.hw_ao_monitor_period = 5
engine.hw_ai_monitor_period = 5
engine.configure_hw_ai(1e3,
'/{}/ai0:2'.format(device), (-10, 10),
sync_ao=False)
engine.configure_hw_ao(1e3, '/{}/ao0'.format(device), (-10, 10))
engine.configure_et('/{}/port0/line0:7'.format(device), 'ao/SampleClock')
engine.register_ao_callback(ao_callback)
engine.register_ai_callback(ai_callback)
engine.register_et_callback(et_callback)
engine.register_ai_epoch_callback(ai_epoch_callback, queue)
queue.put((0, 100))
queue.put((15, 100))
queue.put((55, 100))
engine.start()
raw_input('Demo running. Hit enter to exit.\n')
def main(device):
'''
This demonstrates the basic Engine interface that we will be using to
communicate with the DAQ hardware. A subclass of the Engine will implement
NI hardware-specific logic. Another subclass will implement MCC
(TBSI)-specific logic. This enables us to write code that does not care
whether it's communicating with a NI or MCC device.
'''
def ao_callback(names, offset, samples):
print('{} samples needed at {} for {}'.format(samples, offset, names))
engine.write_hw_ao(np.zeros(samples))
def ai_callback(names, data):
print('{} samples acquired from {}'.format(data.shape[-1], names))
def et_callback(change, line, event_time):
print('{} edge on {} at {}'.format(change, line, event_time))
queue.put((event_time-100, 100))
def ai_epoch_callback(names, start, duration, data):
print('Epoch {} acquired with {} samples from {}' \
.format(start, data.shape, names))
queue = Queue.Queue()
engine = Engine()
# Set the polling interval to a high value to minimize clutter on the scren.
engine.hw_ao_monitor_period = 5
engine.hw_ai_monitor_period = 5
engine.configure_hw_ai(1e3, '/{}/ai0:2'.format(device), (-10, 10),
sync_ao=False)
engine.configure_hw_ao(1e3, '/{}/ao0'.format(device), (-10, 10))
engine.configure_et('/{}/port0/line0:7'.format(device), 'ao/SampleClock')
engine.register_ao_callback(ao_callback)
engine.register_ai_callback(ai_callback)
engine.register_et_callback(et_callback)
engine.register_ai_epoch_callback(ai_epoch_callback, queue)
queue.put((0, 100))
queue.put((15, 100))
queue.put((55, 100))
engine.start()
raw_input('Demo running. Hit enter to exit.\n')
def main(device):
'''
Demonstrates detection of changes on lines configured for hardware-timed
digital input.
'''
def di_callback(names, data):
print('{} samples from {}'.format(data.shape, names))
def change_callback(name, change, event_time):
print('{} edge on {} at {}'.format(change, name, event_time))
engine = Engine()
engine.hw_ai_monitor_period = 1
engine.configure_hw_di(100, '/{}/port0/line0:1'.format(device),
names=['poke', 'spout'],
clock='/Dev1/Ctr0')
engine.register_di_callback(di_callback)
engine.register_di_change_callback(change_callback, debounce=10)
engine.start()
raw_input('Demo running. Hit enter to exit.\n')
def main(device):
'''
Demonstrates detection of changes on lines configured for hardware-timed
digital input.
'''
def di_callback(names, data):
print('{} samples from {}'.format(data.shape, names))
def change_callback(name, change, event_time):
print('{} edge on {} at {}'.format(change, name, event_time))
engine = Engine()
engine.hw_ai_monitor_period = 1
engine.configure_hw_di(100,
'/{}/port0/line0:1'.format(device),
names=['poke', 'spout'],
clock='/Dev1/Ctr0')
engine.register_di_callback(di_callback)
engine.register_di_change_callback(change_callback, debounce=10)
engine.start()
raw_input('Demo running. Hit enter to exit.\n')
