def stop_callback(task_handle,
every_n_samples_event_type,
number_of_samples, callback_data):
"""A nidaqmx callback that wrapps, reads and stops"""
global callback, nsamples
global do_return, nsamples_each, nsamples_acquired
global ntimes, message
global each_signal, signal
nsamples_acquired = ntimes * nsamples_each
if nsamples_acquired <= nsamples:
each_signal = self.__read__(nsamples_each)
callback(each_signal)
if do_return:
signal = utl.multiappend(signal, each_signal)
ntimes += 1
self.__print__(message.format(ntimes))
else:
raise KeyboardInterrupt
# self.__task.control(task_states.TASK_STOP)
return 0
def no_callback_w_stream(task_handle,
every_n_samples_event_type,
number_of_samples, callback_data):
"""A nidaqmx callback that just reads with read_streamers"""
global do_return, nsamples_each
global ntimes, message
global each_signal, signal
if do_return:
each_signal = self.__stream_read__(nsamples_each,
each_signal)
signal = utl.multiappend(signal, each_signal)
ntimes += 1
self.__print__(message.format(ntimes))
return 0
def arg_callback(task_handle,
every_n_samples_event_type,
number_of_samples, callback_data):
"""A nidaqmx callback that wrapps and reads"""
global callback
global do_return, nsamples_each
global ntimes, message
global each_signal, signal
each_signal = self.__read__(nsamples_each)
callback(each_signal)
if do_return:
signal = utl.multiappend(signal, each_signal)
ntimes += 1
self.__print__(message.format(ntimes))
return 0