LabVIEW
how can I create HWS files in labview
You can create .hws files with the NI-HWS VIs. If you missing this palette then install the NI-HSDIO Driver.
With the NI-HSDIO Driver you get also a bunch of LabVIEW examples.
C:\Program Files (x86)\National Instruments\LabVIEW 2015\examples\instr\niHSDIO
Alternativ you can use the NI Digital Waveform Editor to create the Digital Waveforms.
For more information please check out these links:
- What is the HWS File Format?
- Hierarchical Waveform Storage Data File (.hws)
- How Can I Generate Digital Waveforms Saved by the Digital Waveform Editor?
For the following languages is a NI-HSDIO driver support available. You need the NI-HSDIO driver for the PXI-6541 (you can find that in the NI-HSDIO readme):
Additional you can use Signal Express for NI-HSDIO (SignalExpress is a interactive software for quickly write out some signals to a NI devices, with no programming required) or you can program the board in native C.
You find the C examples after the installation of the driver here:
C:\Users\Public\Documents\National Instruments\NI-HSDIO\examples\c
With the listed Software above you can programmatically create a pattern and play the pattern on the PXI-6541. With Signal Express you can play the pattern but you cannot create programmatically the DIO pattern.
I'm not familiar with MATLAB® but it looks like that other guys have created a .hws file with this tool.
How to read National Instruments HWS waveform data file in MATLAB
General documentation to .hws can be found here:
C:\Program Files (x86)\National Instruments\NI-HWS\Docs
You can play the .hws file with all tools listed above. Alternative you can save you date in a ASCII file and play the ASCII file (presupposed the file is not too large) or you write out the programmatically created DO pattern directly to the board.
