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ned_zepplin

Analog discovery 2 bus pattern triggering

Question

The analog discovery 2 reference manual (section 9.3) states that bus patterns can be used for triggering the logic analyzer. I am however unable to find this option when looking in the documentation (reference manual, Waveforms 2015, etc.).

I just wanted to check if this is in fact possible? And if so, how can it be configured?

 

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Hello,

The Logic Analyzer supports trigger combination of signal levels and edges.
The latest WaveForms 2015 v3.3.3 brings new pulse (length, glitch, counter..) and protocol specific triggering like for I2C (trigger on any NAK or specific address/data combination), SPI data, UART value, CAN address...

You can try the software in demo mode to see its options. The up-to-date documentation is the application help.
https://reference.digilentinc.com/waveforms3

img24.png

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Is it possible to trigger on rs232 or can bus while showing any waveform...?

the analog discovery 2 sits before and after my device under test.

 

I would like to sniff on the output of my arduino but see the waveform on its input, that is sampled and converted to a rs232 value that get send...

Like pretrigger on rs232 bits in this order and go :-P

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Hi @Moes,

I'm not certain what you mean by "showing any waveform", but the WaveForms software in the Logic Analyzer does allow you to trigger based on the Identifier for the CAN protocol and the value sent by the UART protocol.

Thanks,
JColvin

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Ah thank you!

 

Well i would use a standalone digital Oscilloscope that features a logic analyser, (MSO? Mixed Signal Oscilloscope) to see how my analog signal is converted to rs232 bits :-P

i could see lag/delay and errors on my programming side..

 

that's my current idear, Thank you for your answer

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