write_functions.py 文件源码

def _write_ctr_ticks(
        task_handle, high_tick, low_tick, num_samps_per_chan, auto_start,
        timeout, data_layout=FillMode.GROUP_BY_CHANNEL):
    num_samps_per_chan_written = ctypes.c_int()

    cfunc = lib_importer.windll.DAQmxWriteCtrTicks
    if cfunc.argtypes is None:
        with cfunc.arglock:
            if cfunc.argtypes is None:
                cfunc.argtypes = [
                    lib_importer.task_handle, ctypes.c_int, c_bool32,
                    ctypes.c_double, ctypes.c_int,
                    wrapped_ndpointer(dtype=numpy.uint32, flags=('C', 'W')),
                    wrapped_ndpointer(dtype=numpy.uint32, flags=('C', 'W')),
                    ctypes.POINTER(ctypes.c_int), ctypes.POINTER(c_bool32)]

    error_code = cfunc(
        task_handle, num_samps_per_chan, auto_start, timeout,
        data_layout.value, high_tick, low_tick,
        ctypes.byref(num_samps_per_chan_written), None)
    check_for_error(error_code)

    return num_samps_per_chan_written.value