azonenberg changed the topic of #scopehal to: libscopehal, libscopeprotocols, and glscopeclient development and testing | | Logs:
<azonenberg> david.lenfesty, TiltMeSenpai: my recommendation is stm32f031 on the probe side as well
<azonenberg> Since the rest of the scopes are based around xilinx 7 series + stm32 and it seems to make sense to keep it uniform
<azonenberg> We want to avoid folks doing dev needing to have a dozen differnet toolchains set up
<d1b2> <TiltMeSenpai> yeah that makes sense
<azonenberg> although it doesnt have to be the 031 specifically, but i think that would be a good choice
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<d1b2> <david.lenfesty> Is it valid to just spec the power supplies at power-on current levels and leave it at that for a spartan 7? That's ~200mA for VCCINT/VCCBRAM and ~50mA for VCCAUX
<d1b2> <david.lenfesty> The power estimator spreadsheet is borked on libreoffice and vivado is a ways out
<d1b2> <david.lenfesty> although it's also pretty trivial to just spec everything for 500mA anyways
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<azonenberg> david.lenfesty: I would use the power estimator spreadsheet. I usually just estimate the chip stuffed to the gills with some vaguely representative clock rate
<azonenberg> it uses heavy vba macros so not surprising libreoffice cant handle it
<azonenberg> i usually run it in a windows vm in actual office
<azonenberg> i'll crunch some numbers for you in a bit
<d1b2> <theorbtwo> I wonder if it is worth porting the spreadsheet to something sane, or re-charachterizing the chip and making your own equivalent. (Probably neither, to be honest.)
<azonenberg> Having to use a windows VM once per board design isn't that catastrophic
<azonenberg> so not exactly a priority
<azonenberg> david.lenfesty: for the prototype, honestly, i'd say 500 mA on everything is more than adequate
<azonenberg> on the actual board i'll run the spreadsheet and see. those rails will be likely shared by other logic
<azonenberg> so i'll add everything up
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<_whitenotifier> [starshipraider] azonenberg commented on issue #3: Active Probe Control/Power Prototypes -
<_whitenotifier> [starshipraider] azonenberg edited a comment on issue #3: Active Probe Control/Power Prototypes -
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<d1b2> <david.lenfesty> sounds good
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<_whitenotifier> [starshipraider] davidlenfesty opened pull request #4: Active Probe Host Prototype -
<d1b2> <david.lenfesty> dangit I forgot some of the USB level shifters
<azonenberg> Let me know when it's ready for review. As far as power sequencing there shouldnt be any real requirements for 7 series, i'd just use LDOs and let them all come up at once
<azonenberg> on the actual BLONDEL system the stm32f7 on the main control board will likely be in charge of all power sequencing and monitoring
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