def runner (parser, options, args):
task = AnalogOutputTask()
args, kws = get_method_arguments('create_voltage_channel', options)
phys_channel = kws['phys_channel']
task.create_voltage_channel (**kws)
channels = task.get_names_of_channels()
if not channels:
print('No channels specified')
return
args, kws = get_method_arguments('configure_timing_sample_clock', options)
clock_rate = kws.get('rate', 1000.0)
if not task.configure_timing_sample_clock(**kws):
return
args, kws = get_method_arguments('ao_write', options)
layout = kws.get('layout', 'group_by_scan_number')
if options.ao_task=='sin':
min_val = task.get_min(phys_channel)
max_val = task.get_max(phys_channel)
samples_per_channel = clock_rate / len(channels)
x = np.arange(samples_per_channel, dtype=float)*2*np.pi/samples_per_channel
data = []
for index, channel in enumerate(channels):
data.append(0.5*(max_val+min_val) + 0.5*(max_val-min_val)*np.sin(x-0.5*index*np.pi/len(channels)))
data = np.array(data)
if layout=='group_by_scan_number':
data = data.T
else:
raise NotImplementedError (repr(options.ao_task))
print('samples available/written per channel= %s/%s ' % (data.size//len(channels), task.write(data.ravel(), **kws)))
if not options.ao_write_auto_start:
task.start()
try:
time.sleep(options.ao_task_duration)
except KeyboardInterrupt as msg:
print('Caught Ctrl-C.')
task.stop()
del task
from nidaqmx import AnalogOutputTask
import numpy as np
data = 9.95 * np.sin(np.arange(1000, dtype=np.float64) * 2 * np.pi / 1000)
task = AnalogOutputTask()
task.create_voltage_channel('Dev1/ao2', min_val=-10.0, max_val=10.0)
task.configure_timing_sample_clock(rate=1000.0)
task.write(data)
task.start()
raw_input('Generating voltage continuously. Press Enter to interrupt..')
task.stop()
del task
from nidaqmx import AnalogOutputTask
import numpy as np
data = 9.95*np.sin(np.arange(1000, dtype=np.float64)*2*np.pi/1000)
task = AnalogOutputTask()
task.create_voltage_channel('Dev1/ao2', min_val=-10.0, max_val=10.0)
task.configure_timing_sample_clock(rate = 1000.0)
task.write(data)
task.start()
raw_input('Generating voltage continuously. Press Enter to interrupt..')
task.stop()
del task
