whitequark changed the topic of #glasgow to: glasgow debug tool · code https://github.com/whitequark/Glasgow · logs https://freenode.irclog.whitequark.org/glasgow
<_whitenotifier-9> [whitequark/Glasgow] whitequark pushed 3 commits to master [+0/-0/±3] https://git.io/fhNWZ
<_whitenotifier-9> [whitequark/Glasgow] whitequark 034d01f - applet.jtag_mips: reset Rocc before entering probe mode.
<_whitenotifier-9> [whitequark/Glasgow] whitequark fef9fff - applet.jtag: reset TAP chain before selecting a TAP.
<_whitenotifier-9> [whitequark/Glasgow] whitequark 9cc3d9a - applet.jtag: enumerate-ir: handle incorrect TAP selection.
<_whitenotifier-9> [Glasgow] Success. The Travis CI build passed - https://travis-ci.org/whitequark/Glasgow/builds/499019931?utm_source=github_status&utm_medium=notification
nausicaa_ has joined #glasgow
<marcan> whitequark: ordered it, thanks
<marcan> also picked up a bunch of headers/connectors (IDC for the I/O ports, 1.27mm stuff for the aux/whatever)
<whitequark> cool!
_whitelogger has joined #glasgow
esden has joined #glasgow
<esden> hey o/ :D
Dark-Star has joined #glasgow
<whitequark> hi!
nausicaa_ has quit [Ping timeout: 256 seconds]
wenna has joined #glasgow
<wenna> Is there a consoldated BoM anywhere for RevC? I wasn't able to find one in the repository last time I looked.
<whitequark> there's an open issue to export it
<whitequark> marcan was going to do it but he's busy
<marcan> whitequark: panic deadline was this past sunday btw
<marcan> I'm catching up on work this week and have some things coming up, but I'm not in panic mode any more
<whitequark> ok but i'm probably not going to be able to even remind you to do things because i'm almost too exhausted to talk from unrelated stuff
<wenna> Cool! Is there anything I could do to help with that?
<marcan> ah, take care then
<wenna> ^^
<marcan> I'm going to try poke at some glasgow stuff this week anyway
<marcan> wenna: are you looking to put together a prototype? The BoM isn't final, though hopefully the only remaining tweaks are resistor values
<wenna> I am looking at that--Do you have any advice?
<marcan> I would say wait a bit; we're pretty close to validating the design. But if you just want to get a head start ordering parts I can probably get you a BOM sometime this week.
<whitequark> marcan: i still haven't brought up the pulls
<whitequark> the main issue is well, the extenders are powered from vio
<whitequark> so if vio drops their state disappear
<whitequark> if vio is turned off by us, that's fine
<whitequark> but if someone shorts vio that's bad
<whitequark> now well, if someone shorts vio this typically resets the board
<whitequark> i'm not sure if i can rely on that though
<whitequark> weak yes
<whitequark> i could also poll the extenders...
<marcan> do the pulls initialize to high-z?
<marcan> I don't think it's unreasonable to expect people to reset the applet if they short vio and depend on the pulls
<whitequark> but i don't want a silent failure mode
<whitequark> it's high z yes
<marcan> polling sounds reasonable if it's just to tell people that hey it's bork
<whitequark> ok
wenna has quit [Ping timeout: 256 seconds]
<marcan> we don't have any other way to monitor vio, right?
<whitequark> yep
<marcan> so it's quirky but we can use the aliveness of the pulls as a proxy for that
<whitequark> yep
<whitequark> well, to an extent
<whitequark> it wouldn't detect brief dips
wenna has joined #glasgow
<marcan> unless the state changes and we see that change
<marcan> but yeah in the default case no
<whitequark> yeah
<marcan> I think that's reasonable for now, there isn't a terribly great way to squeeze vio monitoring into revC
<whitequark> wonder if there are dual channel ADCs in the same package
<marcan> I think for revD we might consider active feedback (also solves the rail discharge problem) and certainly for revE (at that scale it'd be silly not to add features like this)
<whitequark> yeah
<wenna> marcan: Yeah, that would be wonderful! I've been following the project for a while, and want to start playing around with Glasgow. Is there anything I can do to help the project in general?
<bgamari> by the way, the 8-bit ADC is a real pain to get
<bgamari> the 10-bit variant is significantly more available
<bgamari> admittedly 10 bits is a bit excessive to the purpose
<whitequark> yes
<_whitenotifier-9> [Glasgow] whitequark opened issue #104: Indicate 10/12-bit ADC and DAC as functional equivalents to the 8-bit ones - https://git.io/fhNKX
wenna has quit [Ping timeout: 256 seconds]
MrFreeman has joined #glasgow
<MrFreeman> Hello there.
<sorear> hi
<MrFreeman> I was wondering how much it might cost to have a Glasgow sent out for fabrication for those who have done so. I am interested in obtaining one.