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<enyc>
Joerg-Neo900: ok im curious now what "21:55 <+Joerg-Neo900> houkime: great" about... my machines were all down on reboot and updates ad losnt history!
<Joerg-Neo900>
sorry, pastebin freaks out, so here the 3 lines
<Joerg-Neo900>
[2018-05-04 Fri 20:29:15] <houkime> ooopsie, seems like Arch updates have broken eeshow. Trying to recompile
<Joerg-Neo900>
[2018-05-04 Fri 20:36:33] <houkime> recompilation helps. all ok.
<Joerg-Neo900>
[2018-05-04 Fri 22:55:45] <Joerg-Neo900> houkime: great
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<sicelo>
enyc: also, this channel has public logs :)
<enyc>
updates break package... reminds me of gentoo ;p
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<DocScrutinizer05>
isn't arch similar to gentoo somewhat?
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<Joerg-Neo900>
never looked into it
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<enyc>
DocScrutinizer05: seemingly arch can compeile much sutff from source, but doesn't have to, or something...
<enyc>
DocScrutinizer05: derivatives of arch popular too, seemingly
<enyc>
DocScrutinizer05: have you sorted out all your linux distro / opensuse / workspace realtad fun?
<enyc>
i recall there was a time you were having trouble with build-environemnt and difficilty not wanting to change systems and break stuff
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<houkime>
Arch doesn't _have_to_ compile everything from source. Arch binary repositories are usually latest-official-release.
<houkime>
however Arch HAS a great community support for compiling from sources
<houkime>
Community compiling support is done via AUR.
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<houkime>
AUR contains PKGBUILDs - scripts for a built-in packaging system
<houkime>
PKGBUILDs can (and in many cases do) fetch latest sources from git, compile and package them.
<houkime>
PKGBUILDs are maintained by humans and if maintained correctly can compile stuff without your own interference.
<enyc>
houkime: hrrm....... =)
<enyc>
houkime: makes sense, so gives you the possibility to do gentoo-like build-new-stuff and custom-build flags
<enyc>
Oooohoh how I remember gentoo flags
<houkime>
yep, exactly
<houkime>
you can change makeflags on system level and also for each PKGBUILD
<enyc>
houkime: what fun is happenig with the proto_v2 layout, anyway?? ;-)
<houkime>
well, I moved some esds to LOWER (sim ones and one more)
<houkime>
I wanted this for stuff that is too short in terms of traces to be protected locally
<houkime>
I understood that I cannot really account for a case where BOB is not connected to LOWER but to userboard
<houkime>
And now I have some troubles with usb chips
<bencoh>
usb chips?
<houkime>
the guys that process usb signal from the port
<bencoh>
the transceiver you mean?
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<houkime>
ooops, sorry. Wrong one. No, this one is a charger.
<houkime>
It now needs to get quite displaced because of connectors.
<houkime>
there was one configuration where it could be quite ok to be almost on it's metacollin's place
<houkime>
buuuut because of sd holder keepout zones which got interleaving with through hole stuff this wasn't really feasible
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<houkime>
*colliding. not interleaving
<houkime>
and also this config was quite risky on its own(
<houkime>
*esd-wise
<houkime>
actually quite sad. I spent some time (maybe too much of it) to find some way to justify it.
<houkime>
and now the thing is that D+- pair that goes from the port to a charger
<houkime>
actually creates a stub because ther trace to a charger is much shorter than the one that actually goes to UPPER and beyond.
<houkime>
I actually heard that usb D+- is not THAT sensitive (like some others) but still a little bit of concern.
<DocScrutinizer51>
very short T deadebds might not hurt too much, The idea abywat was to run one straight pair from receptacle over HB conatct-vias over charger chip over LOWER2UPPER to SoC
<DocScrutinizer51>
anyway*
<DocScrutinizer51>
with according ESD prot etc on it
<DocScrutinizer51>
this would create a via-port stub when using HB USB but would be stub-free for the common port-connected USB
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<houkime>
by HB contact-vias you mean pogos?
<DocScrutinizer51>
yes, the Vias where those contact to
<DocScrutinizer51>
actually pads with a center drill to hold the pogos' tips in place
<DocScrutinizer51>
just use a via for that
<houkime>
ok, understood. I though about that, but these things would be quite skewed if put directly on a pair.
<DocScrutinizer51>
could also serve for user soldering post connectors or wires there
<houkime>
too much distance between them
<houkime>
signal gets delayed in-between pogos.
<DocScrutinizer51>
yes you have a length skew between D+ and D- on HB, we should elaborate on how to compensate that on the user attache PCB
<DocScrutinizer51>
ideally route tuned pair to center between the two pogo pads and then split right/left
<DocScrutinizer51>
then do same but inverse for the way from HB pads towards SoC
<houkime>
not really feasible to do it split way. Electrical properties difference between scenario "two near" and ("7 mm apart") is biggie. This will create something like a phase transition border and signal will be deflected.
<houkime>
actually the same stands for the difference between "pair in a board" and "7 mm apart in the air over pogos"
<DocScrutinizer51>
we may test RealLive with a slaughtered USB cable