Ben Burns

@attilaDoes this result in a data file I can parse for picking out just the decoded values? The analog display is a nice touch, but does nothing for me in this particular instance. I just need the SPI data in a file, or a way to get there. Honestly, a protocol analyzer that does not run at bus speeds is perplexing. It costs time to develop yet brings no value to the customer....

Does this result in a data file I can parse for picking out just the decoded values?

I am using 3.18.1. I am looking at the transactions with an Analog AD7476 ADC (12 bit) using a 20 MHz SCK. It has 16 clocks of data every 20 for a total of 1Msps. Clock is inactive (high) outside of active select. I had to restart the protocol capture (disturbed the laptop running Waveforms) and am up to 23 hours of collection without hitting my 1000 transactions yet. digital_SPI.dwf3logic digital_SPI.dwf3work

@attilaThanks for the change, as it's been over 17 hours since I started the collection of 1000 samples, and it's still going, having missed nearly 94 million samples so far. (94 million samples occurs in 94 seconds, so yeah this is terrible.)

Update: I was able to record 100 of the 1Msps 16 bit SPI transactions. The Waveforms application only took 20 minutes to do this, and it produced a message in red "Samples could be lost.3344874" [sic]. I'll try for 1000 samples next, and let it run over night. The logic analyzer module works so much better than the protocol module, I am very disappointed that the protocol module, which lured me to purchase the Digital Discovery, was even included in Waveforms at this point as it is completely unusable.

I tried using the logic analyzer using the low speed (DIOs 24, 25, and 26) inputs, and can successfully decode the SPI transactions, though the waveform resolution is terrible. When I set up the protocol module and click on "receive", the mouse cursor turns to a blue circle, and the Waveforms application's title bar gets a "(Not Responding)" addition, and eventually the application self-terminates. Really? @RayHaynesI totally agree, this software is not ready for prime time, and I would not recommend this product, or ANY Digilent product for that matter, to anyone until Digilent learns how to properly code.

Hello - I can set up a SPI channel in WaveForms' Logic analyzer, and all that works well. When I try to use the protocol module, however, I can only choose from the non high-speed inputs. (DIO 24 and up). As this is a 20MHz SPI clock with an ADC sampling @ 1MSps, yeah I want the high-speed inputs. What I am after is dumping about 1000 consecutive SPI transactions to a file for statistical analysis. Have to say, I'm a little dissappointed in WaveForms. Close, but no cigar as they say.