Author Topic: Protocol decode wishlist  (Read 13372 times)

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Offline MrW0lf

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Re: Protocol decode wishlist
« Reply #25 on: April 13, 2017, 07:29:51 pm »
Mine does voltage stats per packet, but not inline.
 

Online JPortici

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Re: Protocol decode wishlist
« Reply #26 on: April 26, 2017, 07:13:04 am »
crazy idea: PWM decoder. each packet is a PWM pulse and the value is the duty cycles.
I've seen it only in a recent product (the patchblocks mini synths: two blocks communicate with each other with a digital signal that is nothing but a PWM + input capture)
i recall that PWM was also used in older automotive diagnostic standard?

I can sort of do this with the picoscope, plotting a math trace with duty cycle as an expression
 

Offline MrW0lf

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Re: Protocol decode wishlist
« Reply #27 on: April 26, 2017, 07:50:06 am »
I can sort of do this with the picoscope, plotting a math trace with duty cycle as an expression

How many discrete values of PWM duty?
 

Online nctnico

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Re: Protocol decode wishlist
« Reply #28 on: April 26, 2017, 03:09:41 pm »
crazy idea: PWM decoder. each packet is a PWM pulse and the value is the duty cycles.
Another way of dealing with PWM is to use input filtering.
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Online JPortici

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Re: Protocol decode wishlist
« Reply #29 on: April 26, 2017, 05:25:21 pm »
no, you don't understand: the goal is not to reproduce an analog waveform but to send data, each pulse is a word.
 

Offline Keysight DanielBogdanoff

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Re: Protocol decode wishlist
« Reply #30 on: April 26, 2017, 05:35:59 pm »
What I would like to see is JESD204, QSPI, I2S, and NFC, with non intrusive probe kit.
I think Keysight have a solution for NFC.

We do have NFC, I2S, and Manchester recently added.
 

Online mikeselectricstuff

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Re: Protocol decode wishlist
« Reply #31 on: April 26, 2017, 09:27:17 pm »
crazy idea: PWM decoder. each packet is a PWM pulse and the value is the duty cycles.
I've seen it only in a recent product (the patchblocks mini synths: two blocks communicate with each other with a digital signal that is nothing but a PWM + input capture)
i recall that PWM was also used in older automotive diagnostic standard?

I can sort of do this with the picoscope, plotting a math trace with duty cycle as an expression
Could you maybe do this with measurement trend on a pulse-width or duty-cycle measurement
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Offline mubes

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Re: Protocol decode wishlist
« Reply #32 on: April 26, 2017, 10:22:16 pm »
Personally, irrespective of protocol, what i would like to be able to do is to live stream the decoded data down to a host pc for further processing. That way, I get the triggering, channel and sensitivity flexibility of the scope coupled with the data chewing capabilities of the pc. It's possible that this can already be done (i haven't looked in any detail, i have other tools that are usually good enough) but it's certainly not a use case I'm comfortable using a scope for.
 

Offline bson

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Re: Protocol decode wishlist
« Reply #33 on: April 28, 2017, 12:59:21 am »
Even better, allow it to use a network volume in lieu of the internal storage or USB drive.  My WaveSurfer will happily save decoded data, screenshots, trace history, notebooks, and anything else straight to my Synology DS1515+ NAS.
 

Online nctnico

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Re: Protocol decode wishlist
« Reply #34 on: April 28, 2017, 10:06:54 am »
Even better, allow it to use a network volume in lieu of the internal storage or USB drive.  My WaveSurfer will happily save decoded data, screenshots, trace history, notebooks, and anything else straight to my Synology DS1515+ NAS.
The newer GW Instek oscilloscopes can do that too (GDS2000E / MSO2000E, not sure about the GDS1000B series)
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Offline gardner

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Re: Protocol decode wishlist
« Reply #35 on: April 28, 2017, 07:42:39 pm »
Wiegand anyone?
10BASE-T or 100BASE-T?
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Offline colorado.rob

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Re: Protocol decode wishlist
« Reply #36 on: May 16, 2017, 02:48:57 am »
I just found this thread.  I'm in the market for a mixed signal o-scope and one of the key things I need is USB decode. The last few times I've pulled my Saleae LA out, it was for this.  Such a common protocol, I'm surprised it's not more common.

Does anyone have a list of MS scopes that support USB decode?
 


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