#avr Logs
Feb 18 2018
#avr Calendar
12:32 AM day__ is now known as day
12:59 AM Ameisen: that's less aliasing, and more truncation :P
01:02 AM day__ is now known as day
01:07 AM day__ is now known as day
01:33 AM day__ is now known as day
05:59 AM cehteh: mmu just for ring buffers would be a bit of waste :D
06:18 AM polprog: this pack of salty crackers was probably the best thing that i bought for the lab recently
06:28 AM _ami_: polprog: late night snacking? ;_
06:28 AM _ami_: ;)
06:40 AM polprog: _ami_: :P
07:55 AM hetii: Hi
07:56 AM hetii: I have a LCD panel from DELL E6400 its B141PW04, I`m able to run selftest of this panel and got all color palates that switch but I don`t know how to enable backlight, LED driver is OZ9959
07:56 AM hetii: and I just found such datasheet: https://obrazki.elektroda.pl/2483384500_1518644934.png
07:56 AM hetii: and here board with it: https://obrazki.elektroda.pl/2296149400_1518641659.jpg
07:56 AM hetii: any clue how to enable backlight ?
07:58 AM polprog: looks like it may be commanded by SMbus
07:59 AM hetii: yep, this might be the only way
07:59 AM hetii: I tried to provide some PWM signal on PWM_BL but without success
08:19 AM hetii: Can I talk to this smbus from regular i2c host adapter?
08:19 AM polprog: i think so
08:19 AM polprog: but im not sure
09:05 AM hetii: polprog, Yuppi :)
09:05 AM hetii: it works :)
09:08 AM hetii: I connect smbus pins via i2c-tiny-usb to my pc and send two command:"i2cset -y 7 0x2c 0x0 0xff" to set max brightness and "i2cset -y 7 0x2c 0x1 0x5" to inform panel that I will control brightness just by smbus
09:09 AM hetii: Take those registry by reading this note: https://www.intersil.com/content/dam/Intersil/documents/isl9/isl97635a.pdf
10:52 AM polprog: holy molly
10:52 AM polprog: im surprised it was *that* easy
10:52 AM polprog: i need to put the raspi back on the bench to use it as an i2c transceiver!
11:04 AM polprog: hetii: by the way, elektroda? lol
11:04 AM polprog: hetii: zamykam temat, uzyj opcji szukaj
11:14 AM Tom_itx is now known as Tom_L
11:40 AM polprog: ##c-offtopic is such a shitshow jesus
11:43 AM APic: *nod*
11:44 AM APic: But the Pragma-s still pwn
11:44 AM APic: 😉
12:53 PM Emil: polprog: best channel
01:31 PM hetii: polprog, yep elektroda, I know it`s a cancer but most popular site as you know for ours hobby :) https://www.elektroda.pl/rtvforum/viewtopic.php?p=17046101#17046101
01:32 PM polprog: hetii: im interested in driving one of those in the future
01:33 PM hetii: polprog, the same model?
01:34 PM polprog: no, generally
01:35 PM hetii: I see, yep I have also few other panel that I want to run, but this is the firs. I was very supprised that all differential signals was in fact in shielded wires
01:36 PM hetii: they are so thin an small that I thought at the beginning that is just one signal wire without ground
01:36 PM hetii: so keep that in mind when you start playing with your panels
01:41 PM polprog: ive watched a couple videos by a guy hacking a panel with an FPGA (it had bultin diff pair drivers)
01:42 PM Jartza: whoa
01:42 PM Jartza: I found a bug from tagsu firmware
01:42 PM Jartza: lol
01:42 PM Jartza: it's been there since beginning but nobody noticed
01:42 PM polprog: Y2K38? :P
01:42 PM Jartza: ...which is kinda good that nobody did, because it can brick your device :P
01:43 PM polprog: whoops :P
01:43 PM Jartza: there's not really a concept of time in tagsu
01:43 PM Jartza: so nope
01:43 PM hetii: what is tagsu ?:)
01:43 PM Jartza: it's electronic namebadge
01:43 PM polprog: a cool badge
01:44 PM hetii: hmm odd things
01:46 PM Jartza: fortunately the bug isn't easily triggered by end user
01:47 PM Jartza: only if they try to misuse the editor
01:48 PM Jartza: but with some misuse of the incoming data the system can be rendered in a state where it goes into watchdog boot-loop
01:48 PM Jartza: oh well. luckily I can fix that and create new .wav for firmware update :D
01:56 PM polprog: cue dialup noises
01:57 PM polprog: did you make the wav transfer protocol itself or is it based on something known, like XMODEM?
01:58 PM Jartza: I made the whole thing myself
01:58 PM Jartza: https://hackaday.com/2014/11/30/transferring-audio-to-an-avr-at-12kbps/
01:59 PM polprog: hmm
02:01 PM thardin: pretty decent speed
02:05 PM Jartza: it has worked pretty nicely. we ran out of tagsus ages ago already
02:05 PM Jartza: I'm still making one batch, but that'll be the last one
02:05 PM Jartza: and at the same time I'm open sourcing the thingmabob
02:06 PM Jartza: also hardware
04:30 PM polprog: night
04:32 PM Emil: good night
04:40 PM LeoNerd: Is it just me, or are there basically no USB-to-GPIO/SPI/I²C/... products around anywhere at all, that do interrupts?
04:40 PM LeoNerd: The closest you can get is the MCP2210 or CP2130, which have a "counter" interrupt pin, and there's a USB command to query the count of events
04:40 PM LeoNerd: So you still have to poll it
04:48 PM rue_: those all require a protocol, so its not just generic
04:49 PM LeoNerd: Huh?
04:49 PM LeoNerd: On the USB side, they're all custom proprietary things anyway
04:49 PM LeoNerd: So adding interrupts wouldn't make that any worse
04:49 PM rue_: https://www.thingiverse.com/thing:2798705
04:50 PM rue_: I did instructions with this one
04:50 PM rue_: I dunno, does anyone ever do these online projects?
04:50 PM rue_: is this all jsut a waste of time?
04:50 PM cehteh: rue_: nice power supply for a led strip :D
04:51 PM rue_: it turns on when the power goes out
04:51 PM rue_: and off when the battery is low
04:51 PM rue_: aka, power outage light
04:51 PM cehteh: usb?
04:51 PM rue_: after all the outages last night at my shop, I decided to JUST DO IT
04:51 PM rue_: it turns the lights on WHEN THE POWER GOES OUT
04:52 PM cehteh: yes but how is it connected?
04:52 PM cehteh: has the usv a gpio, serial or usb?
04:52 PM rue_: its got its own controller in there that the ups uses
04:52 PM LeoNerd: Ahah! CH341A or T can do interrupts
04:52 PM rue_: its milking off the brain of the UPS
04:53 PM cehteh: ah
04:54 PM rue_: so it operates all on its own
04:55 PM cehteh: here usv would be more trouble than its worth :D .. in the past 20 years we had maybe 3 power failures, lasting less than a minute or so
04:55 PM cehteh: mhm one was longer i think, cant really remember
04:55 PM rue_: last night was 6 hours
04:55 PM rue_: winter, snow, trees
04:56 PM rue_: I got the UPS free from the hospital last night, glad that I did soemthing with it sooner than never
04:58 PM cehteh: the people i know who have USV's here have regulary more trouble with the USV than me without (battery or electronics fault)
04:59 PM rue_: I was making a video for another thingiverse post last night, and on the LAST STEP the power went out.. just long enough that I gave up and hit stop *right* before it came back.
09:13 PM xMopx is now known as xMopx1
09:13 PM xMopx1 is now known as xMopx
11:13 PM unsuscribedunreg: hi
11:14 PM * Casper smashes the unsubscribe button
11:20 PM day__ is now known as day
11:22 PM unsuscribedunreg: Casper: ;>