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<Guest4781>
Hello guys, I am interested in Beaglebone64 AI board. I did some research on TI's website. There are some examples about using the Accelerators. Will I be able to follow the instructions there and replicate it on Beaglebone AI. Alternatively are there any examples from beaglebone community?
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<Guest4781>
Seems like no one is here
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<xshifty>
hello guys. Anyone here using beaglebone AI-64 for robotics?
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<jfsimon1981>
Good evening
<jfsimon1981>
zmatt I'll be working on the safe emmc (slc and safe write flag
<jfsimon1981>
do i need to recompile the kernel ?
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<zmatt>
no
<zmatt>
the kernel has nothing to do with it
<zmatt>
it's purely an eMMC-internal setting
<jfsimon1981>
i shall just format, but there's emmc utils to recompile then
<jfsimon1981>
the one which supports safe write, if i get it right that's not possible with default emmc, there's one on your git which support sit
<jfsimon1981>
Boot for microsd and reformat emmc with this flag on, is it correct ?
<zmatt>
jfsimon1981: iirc it's possible to use standard mmc-utils to do the reconfiguration, but the process then requires multiple steps, some of which depend on parameters you need to query, and is tricky and error-prone. since "one-time-programmable irreversible configuration" and "error-prone" are not a good combination, I created a added a custom command to mmc-utils
<jfsimon1981>
ok
<jfsimon1981>
Do you think one time programmabe means only at format time ? or one for entire emmc life ?
<zmatt>
for the entire eMMC life
<zmatt>
there is no way to undo this
<jfsimon1981>
oh so basically at factory they don't do it, it can be done but not way back
<jfsimon1981>
ok, did you check this with manufacturer of that's just clear to you the way datasheet says it ?
<zmatt>
it's how the eMMC specification is written
<jfsimon1981>
ok
<zmatt>
anyway, boot from sd card, and then "mmc reliable-slc-configuration /dev/mmcblk1" (where mmc is the util built from my repo)
<zmatt>
and then power-cycle the beaglebone (reboot does not suffice)
<jfsimon1981>
ok pretty clear
<jfsimon1981>
this is the mmc which i shall compile from your git source then right ?
<zmatt>
that's what I just said: "where mmc is the util built from my repo"
<jfsimon1981>
yes
<jfsimon1981>
i'm sorry got it
<jfsimon1981>
it will help me sleep at night
<zmatt>
and just to be clear, this reconfiguration into SLC mode causes 50% reduction in storage space
<jfsimon1981>
we are at serial number 7 but that's gonna grow
<jfsimon1981>
yes sure
<jfsimon1981>
i'll try for next batch
<jfsimon1981>
thank you
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<hays>
anyone in here know crosstool-ng pretty well?
<hays>
I have an offtopic question
<zmatt>
I've used it a few ages ago, wouldn't say I know it well though
<hays>
i think im missing a basic logical question about it.. trying to build a toolchain for a machine that currently doesnt have one
<hays>
its the same arch, but differeent glibc and everything else. so I think I need to do a "cross-native" build
<hays>
build once a cross, then build again, using the cross to make the native
<hays>
for the life of me I can't understand how to use crosstools-ng to do this
<zmatt>
oh I've only ever used it for building cross-toolchains, not for cross-building a native toolchain
<hays>
yeah i think that's simpler
<hays>
its maddening i understand conceptually but can't make sense of the tool
<jfsimon1981>
that gets rid of the identify you mean
<jfsimon1981>
Will try the mmc command now
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<zmatt>
I guess I should probably rebase my patches on top of the latest upstream version of mmc-utils... I might do that later, right now I've got something more important to do: eat pizza
<hays>
i guess that means i really know what im doing.. if im filling that out haha
<hays>
[00:00] / Invalid configuration `': machine `-unknown' not recognized
<hays>
fixed.
<hays>
alright here we go
<hays>
well my stupidity is costing me be the hour.. heh but luckily only like $0.15/hr
<hays>
i wonder how big you can get an instance and it still benefits a gcc build
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<jfsimon1981>
Hi zmatt
<jfsimon1981>
I'll probably need a bit of help to flash it, though tomorrow
<jfsimon1981>
Now that it's 2 Gb i can do with the 7.5 (2014) image that's 2GB but it's a bit old.
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<zmatt>
jfsimon1981: start with a minimal image, not with an ancient image
<zmatt>
given that you knew from the start that this reconfiguration would leave only half the eMMC size, I'm a bit confused you're only now considering what to flash onto it instead of *first* making sure that 2G is plenty of space for your use case
<zmatt>
I also feel like we've surely discussed this at a previous occasion