session.py 文件源码

def write_waveform_numpy(self, waveform):
        '''write_waveform

        Writes waveform to the driver

        Args:
            waveform (numpy array of float64): Waveform data.
        '''
        import numpy

        if type(waveform) is not numpy.ndarray:
            raise TypeError('waveform must be {0}, is {1}'.format(numpy.ndarray, type(waveform)))
        if numpy.isfortran(waveform) is True:
            raise TypeError('waveform must be in C-order')
        if waveform.dtype is not numpy.dtype('float64'):
            raise TypeError('waveform must be numpy.ndarray of dtype=float64, is ' + str(waveform.dtype))
        vi_ctype = visatype.ViSession(self._vi)  # case 1
        number_of_samples_ctype = visatype.ViInt32(0 if waveform is None else len(waveform))  # case 6
        waveform_ctype = numpy.ctypeslib.as_ctypes(waveform)  # case 13.5
        error_code = self._library.niFake_WriteWaveform(vi_ctype, number_of_samples_ctype, waveform_ctype)
        errors.handle_error(self, error_code, ignore_warnings=False, is_error_handling=False)
        return