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Re: Using NI-USB-8451 SPI interface to communicate with ADS8344

Olivier Goujon
Prodigy 20 points
Other Parts Discussed in Thread: ADS8344, ADS8345

Hi,

I'm french, i'm also trying to communicate with ADS8344 using NI-8451 and LabView, did you success to do it ? And can you help/explain me ?

Best Regards,

Olivier

  • 0
    Prodigy 90 points

    Hi mate!

     

    I successed the communication with ADS8345 which is the same as ADS8344. How can I help you? In which step are you right now?

     

    I attach a Lab View file I did to communicate with this ADC. It is very simple, I mean, you can improve it because you will see I didn't use busy signal to read and then I got one-bit shifted so that I had to read the first byte (MSB) twice and shift to the left one bit. I dind't spend time improving that because it was just a test to learn how NI-8451 works. Afterwards I used another one.

    I think if you don't toggle low Chip Select (CS)  and you design a while loop to wait for busy signal going High in one clock period, probably you will get the data properly. Ask me if you have any question.

     

    Cheers!2110.TestSPI8451_ADS8345.rar