Python script to use Analog Discovery 3 as SPI slave

[Aurelien]

Hello,

I am already using the new functionality of waveform to use the AD3 as an SPI slave, and it works great.

Can i use analog discovery 3 as a SPI slave? - Test and Measurement - Digilent Forum

But I would like to integrate this functionality into a separate application or script.

I started looking at the Python API, and I feel like all the pieces are there in the API and the examples to do it, but it does not look quite so easy, especially the timing due to the different SPI configurations possible.

Before I start going deeper in the implemenation, I wonder I someone has already done it ?

Or maybe has access to the source for the SPI slave tab of WaveForm ? (Maybe it is also in python)

[attila]

Hi @Aurelien

SPI Slave feature is not yet available with SDK. I'll port it from the application to the library later.
It could be implemented using state machine with ROM logic but this is very complicated to do. 

[Aurelien]

Thanks you for the response.

By ROM logic, do you mean the pattern generator ?

Because I was thinking of using FDwfDigitalOutTypeSet, like in DigitalOut_SPI.py.

And mixing it maybe with ideas from Digital_Spi_Spy.py for the triggering.

 

But since it looks complicated, I will hold off for now.

The tab in waveform is enough. I will wait to see if it is really necessary for the project. 

[attila]

Hi @Aurelien

Yes, that rom logic but using from SDK, see samples/py/DigitalOut_ROM_Mux.py https://digilent.com/reference/waveforms_-_rom_logic 
Again, this can be very complicated to code it for state machine.

You can use the Scrip tool to automate tasks in WaveForms application.