Thank you for the question Yann. I spoke with John Gabler and Dan Slichter here at NIST and came up with the following advice.
There's no need for the 6733 controller to run on a Linux machine. I've found the NI libraries on Windows to be reasonably straightforward (NI-DAQmx libraries with C++). I recommend building to a binary.dll then writing a python interface (using e.g. ctypes) for artiq. I'll send you a copy of the code we currently use as part of our HFgui environment. I recommend taking a look at QC-DAQ\src\6733wfm to see how this was coded in the past; reuse as much as you can. From an interface perspective it would be excellent if the 6733 looked identical to the PDQ interface. Some differences: * 6733 doesn't support waveform branching * The "waveform advance" pulse to the 6733 is what causes its output to transition from one ADC channel (voltage) to another. We usually generate this pulse from the FPGA not from a periodic clock (eg crystal oscillator). This makes it possible to a) conserve memory on the 6733 when a static output is desired and b) reduce noise on the 6733 analog outputs (its more noisy when being clocked). -Joe On Tue, Jan 20, 2015 at 3:55 AM, Yann Sionneau <y...@m-labs.hk> wrote: > Hello, > > I'm trying to implement a controller for NI PXI 6733 even if I didn't > receive the hardware yet. > First task was to pick a library/driver to control it. > > So far I found 4 python libraries: PyDAQmx, pylibdaqmx, pycomedilib > (debian package name python-comedilib) and pycomedi. > I wasn't able to make any of them work under Linux for various reasons > (python 3 vs python 2, or crashing while loading some shared library). > I was able to import and call a few functions (under Windows 7) of PyDAQmx > which makes it a potential candidate. > > Is the PXI 6733 used on Linux machines? Is there a real need for a Linux > controller? > > Thanks! > > Regards, > > -- > Yann > _______________________________________________ > ARTIQ mailing list > https://ssl.serverraum.org/lists/listinfo/artiq >
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