Need example source for SPI design with NiDAQ

[Jennyatcypress]

Hi,

I'm trying to use the PXIe-6363 as a SPI master. My Python software framework does not allow for a bit-banging approach. I need to output the waveforms for the CLK, MOSI, and SS lines while capturing the MISO data. I'm controlling the equipment through VISA and am having problems loading the waveforms and triggering all four lines at the same time. I found a post related to this (http://www.ni.com/example/31200/en/#toc3) but it doesn't have any source code. I would like a source code example of how I can do this. For example,

active_task = PyDAQmx.TaskHandle()
PyDAQmx.DAQmxCreateTask("", ctypes.byref(active_task))

DAQmxCreateDOChan(active_task, CLK_Channel, "", PyDAQmx.DAQmx_Val_ChanPerLine)

DAQmxCfgSampClkTiming(...)

DAQmxWriteDigitalLines(...)

...

# Set up other lines

...

DAQmxSendSoftwareTrigger(...)

I would also like to know if I could do this across multiple PXIe-6363 cards. Let's say I have three cards that control the three lines. How would I do this?

Thanks,

Jenny

[nyc_(is_out_of_here)]

post your question at http://forums.ni.com/t5/Multifunction-DAQ/bd-p/250

[Jennyatcypress]

Ok. Done.

http://forums.ni.com/t5/Multifunction-DAQ/Need-example-source-for-SPI-design-with-NiDAQ/td-p/3198894