#avr Logs

Mar 14 2018

12:21 AM day__ is now known as day
03:38 AM nux__: A great mind died tonight, Rip Stephen Hawking
03:39 AM nux__ is now known as nuxil
04:32 AM _ami_: nuxil, indeed. overall IQ of humans is reduced today. :/
04:32 AM thardin: ACKSHULLY iq is just a way of ranking humans. average iq is always 100
04:33 AM thardin: median I should say
05:14 AM polprog: http://punix-os.blogspot.com/?m=1
05:15 AM polprog: im impressed . unix on a TI
05:15 AM polprog: TI92+
05:49 AM polprog: https://puu.sh/zHmaz/2b70a625b9.jpg
05:49 AM polprog: classmate made a pi cake
06:01 AM thardin: always wonder why pi day isn't 22/7
06:02 AM nuxil: hehe :D
06:06 AM nuxil: 223/71 < π < 22/7
06:06 AM nuxil: :p
06:06 AM polprog: its so delicious and moist :p
07:31 AM skz81: <polprog> im impressed . unix on a TI >> hum... 68k@10MHz, 188KB RAM... More than enough for a basic (older) UNIX ! But fun, for sure :)
07:32 AM polprog: im impressed that someone had the drive to write an os for that :D
07:35 AM cehteh: there was a unix for the amiga back then
07:36 AM cehteh: https://en.wikipedia.org/wiki/Amiga_Unix
07:38 AM skz81: polprog, "someone had the drive to write an os for that" >> Yeah, THAT's impressive, I agree :) Good way to practice and get into kernel stuff I guess
07:44 AM polprog: well. sure!
09:46 AM Ameisen: getting weird toolchain issues
09:46 AM Ameisen: trying to figure out why
09:54 AM nuxil: weird issues like ?
11:30 AM gregor2: guyS!!!
11:31 AM gregor2: It
11:31 AM gregor2: IT!!!!!!!!
11:31 AM gregor2: It worked
11:31 AM gregor2: PDO and PDI are working with mosi and miso!
11:34 AM Ameisen: nuxil - internal compiler errors in a few places
11:34 AM Ameisen: some linking issues that don't make sense
11:34 AM Ameisen: gonna rebuild the toolchain with different flags
11:35 AM gregor2: I did it today
11:40 AM gregor2: What do you think?
05:29 PM bunder: after a week of fighting with my pcbs i finally got my programmer to see my 165pa, but it says the signature is 58ffff not 1e9407, any ideas?
05:36 PM Tom_L: different variant of the same chip probably
05:37 PM Tom_L: or china can't copy stuff as good as we thought..
05:37 PM bunder: i bought them off mouser, odd
05:39 PM Tom_L: yeah, i don't know..
05:39 PM Emil: bunder: that seems like a weak connection
05:42 PM bunder: seems to read the fuses okay according to the datasheet
05:43 PM Tom_L: i wouldn't worry too much about it
05:44 PM bunder: well at least i got the thing working, for now :)
05:44 PM bunder: wound up having to buy a hot air station
05:56 PM gregor2: hey guys
05:56 PM gregor2: you know what!
05:57 PM gregor2: Tom_L!
05:57 PM Tom_L: you seem a bit happier so you must have gotten it working
05:57 PM gregor2: Yes!
05:57 PM gregor2: you got it!
05:57 PM gregor2: It touched PDO and PDI with mosi and miso from the programmer
05:57 PM gregor2: it did work
05:58 PM Tom_L: sleep fixed lots of things all by itself
05:58 PM gregor2: i must have missed it the last time
05:58 PM gregor2: i know
06:00 PM Tom_L: bet you don't forget that one again
06:00 PM gregor2: no
06:01 PM gregor2: but i think there where things like that before.
06:01 PM gregor2: when i first got a microcontroller i was so excited that i messed up the fuse bits.
06:01 PM gregor2: But the next day....
06:02 PM gregor2: i fixed it back
06:08 PM Emil: lucky you
06:09 PM Emil: usually if you fuck up the fuse bits there's hardly going back
06:09 PM Emil: easily
06:09 PM Emil: Good nigth
06:09 PM Emil: night*
06:09 PM gregor2: good night
06:09 PM gregor2: they are hardly going back?
06:10 PM gregor2: I just set up the clock very low.
06:19 PM bunder: depends on if the programmer can do hv i think?
06:19 PM gregor2: But cant the fuse bits otherwise be messed up?
06:19 PM gregor2: Everyone is talking about this thing with the RESET pin disabled.
06:20 PM gregor2: Cant you mess them up that not even a HV programmer is able to save that?
06:24 PM bunder: not sure
06:59 PM LeoNerd: I'm looking at building a nicer frontend for the pololu AVR programmer. The latter has this annoying "can't really supply target power, and only does 5V IO" to it. My frontend supplies power at switchable 5 or 3.3V
07:00 PM LeoNerd: Right now I'm just using those simple nFET-based level shifters, which appears to be working fine, but I'm wondering whether it's worth considering putting a 74'125 on the outside, powered by target power. Does that sound worth it?
07:01 PM LeoNerd: The issue is that without that, the pullup resistors in the level shifter are connected permanently to the circuit under development; which most likely is the SPI bus so is probably OK, but in the case that it wasn't it could get annoying
07:01 PM LeoNerd: The 74'125 would be gated by the RST# signal, and so be hiZ output when not programming