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pxi6733: use a writeable and c_contiguous numpy ndarray
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fallen committed May 21, 2015
1 parent 1e393f5 commit c91cd0a
Showing 1 changed file with 3 additions and 0 deletions.
3 changes: 3 additions & 0 deletions artiq/devices/pxi6733/driver.py
Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
# Yann Sionneau <ys@m-labs.hk>, 2015

from ctypes import byref
import numpy as np


class DAQmxSim:
@@ -48,6 +49,8 @@ def load_sample_values(self, values):
t.CfgSampClkTiming(self.clock, 1000.0, self.daq.DAQmx_Val_Rising,
self.daq.DAQmx_Val_FiniteSamps, len(values))
num_samps_written = self.daq.int32()
values = np.require(values, dtype=float,
requirements=["C_CONTIGUOUS", "WRITEABLE"])
ret = t.WriteAnalogF64(len(values), False, 0,
self.daq.DAQmx_Val_GroupByChannel, values,
byref(num_samps_written), None)

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