Writing SPI data with a small delay between bytes?

[alexpeck]

Hi,

I'm writing some data to a slower SPI slave device using  a WaveForms script. 

It's working well at slow clock speeds.  However, the device specs indicate it needs a small (8usec or more) delay between bytes at higher SPI clock speeds.

Is there a simple way to add such a delay with the existing SPI Read(), Write(), & ReadWrite() commands?

Or will I need to change to single byte transfers, with a wait() in between each?

 

Thanks,

 

Alex

[attila]

Hi @alexpeck

There is no option for delay between words but I will add in the future.
At the moment you can use wait function, like wait(0.001) 1ms, between words/bytes.

[alexpeck]

Thanks!

[alexpeck]

Hi Atilla,

 

Just wondering if the SPI Interbyte delay option has been added.  It would be ideal if the delay resolution could be as low as 1 microsecond.

FYI...In the interim, I have been testing using the pattern generator to manually create individual SPI commands with small delays in them.

Thanks,

Alex

[attila]

Hi @alexpeck

Thank you for bringing this up.
I've started working on this. It will be in the next version.

[attila]

Hi @alexpeck

See latest beta version:
https://forum.digilentinc.com/topic/8908-waveforms-beta-download/

 

[alexpeck]

Perfect!  Thanks!!

 

Alex