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jikk | Hello. | 00:15 |
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jikk | I'm trying to get my N900 to connect via openvpn. Strange thing is it was working last week, and I'm not sure what I've broken. On initializing the openvpn connection I notice two errors - "ip-change command failed: could not execute external program", and "NOTE: unable to redirect default gateway -- Cannot read current default gateway from system". In my openvpn.conf I have "script-security 2" and "ipchange add_default_route.sh" | 00:18 |
jikk | As suggested by this post - https://bugs.maemo.org/show_bug.cgi?id=7596#c9. | 00:18 |
povbot_ | Bug 7596: redirect-gateway broken with 2G/3G connections | 00:18 |
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jikk | povbot_: Yeah I've read about that (in the above post). After the VPN is up, I can manually run the add_default_route.sh command, and all is fine. | 00:19 |
povbot_ | jikk: Error: "Yeah" is not a valid command. | 00:19 |
jikk | povbot_: Oh, you're a bot. | 00:20 |
povbot_ | jikk: Error: "Oh," is not a valid command. | 00:20 |
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jikk | Guess it was in the name. | 00:20 |
jikk | povbot_: botsnack | 00:20 |
povbot_ | jikk: Error: "botsnack" is not a valid command. | 00:20 |
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jikk | Meh, was missing the #!/bin/sh at the top of the script. | 00:28 |
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SpeedEvil | :-) | 00:32 |
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DocScrutinizer51 | dang, either mediaplayer gone apeshit, or recaller recorded 80min of pure silence | 00:55 |
DocScrutinizer51 | ~botsnack | 00:56 |
infobot | thanks, DocScrutinizer51 | 00:56 |
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FIQ|n900 | hmm | 00:59 |
FIQ|n900 | how come that HAM crashes after a program has been installed? | 00:59 |
DocScrutinizer51 | hmm? | 01:00 |
FIQ|n900 | I just enabled devel on this device to install backupmenu and xchat | 01:01 |
FIQ|n900 | backupmenu installed *crash* | 01:01 |
DocScrutinizer51 | hmmm | 01:01 |
FIQ|n900 | xchat as well, also followed by HAM crash | 01:01 |
FIQ|n900 | or, freeze during the "1 application has been installed" dialog | 01:01 |
FIQ|n900 | to be exact | 01:02 |
DocScrutinizer51 | well, THAT's normal | 01:02 |
FIQ|n900 | "normal" | 01:02 |
DocScrutinizer51 | just wait 5min | 01:02 |
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FIQ|n900 | wat | 01:02 |
FIQ|n900 | oh great | 01:02 |
DocScrutinizer51 | until HAM finsihed its pressing afairs | 01:02 |
FIQ|n900 | the random "hide all repos" thing... | 01:03 |
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FIQ|n900 | now I can't disable devel to proceed with installing rootsh, perfect | 01:03 |
FIQ|n900 | unless I like waiting 10min | 01:03 |
DocScrutinizer51 | well HAM with devel enabled is basically unbearable | 01:04 |
FIQ|n900 | I really don't like HAM, should have installed rootsh so I could avoid HAM completly ... | 01:04 |
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FIQ|n900 | first, that si | 01:04 |
FIQ|n900 | *is | 01:04 |
DocScrutinizer51 | but since it doesn't need pushing or kicking suring the 10min, you as well can get a beer and live with it | 01:05 |
DocScrutinizer51 | during* | 01:05 |
FIQ|n900 | ok this hide repos bug is annoying | 01:05 |
FIQ|n900 | don | 01:06 |
FIQ|n900 | don't get what causes it and don't know how to fix/work around | 01:06 |
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DocScrutinizer05 | nfc which bug you're talking about | 01:13 |
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GGon | so where is maemo for raspberry pi? | 11:55 |
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Luke-Jr | GGon: never? | 11:59 |
GGon | heh | 11:59 |
GGon | meego? :-P | 11:59 |
Luke-Jr | RPi isn't a Nokia product, and Nokia's abandoned Maemo anyway | 11:59 |
GGon | then port cssu to it :-P | 11:59 |
GGon | heh | 11:59 |
Luke-Jr | … | 11:59 |
Luke-Jr | GGon: you realize cssu/maemo/etc is not open source? | 12:00 |
GGon | oh. thought cssu was | 12:00 |
GGon | i was honestly joking anyways | 12:01 |
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internetishard | why the hell does nokia make both the n9 and the lumia 920? | 12:05 |
internetishard | Why do they stretch themselves like that??? | 12:05 |
jacekowski | what? | 12:06 |
jacekowski | n9 is old phone | 12:06 |
internetishard | Yeah, not that old - and if they keep flip flopping with OSs all of the time they'll never gain any momentum | 12:07 |
Luke-Jr | internetishard: Nokia has abandoned all Linux | 12:08 |
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internetishard | wtf was n9? A test? Old parts that they wanted to get rid of? :P | 12:09 |
Luke-Jr | contract | 12:09 |
Luke-Jr | afaik Nokia's agreement with Intel(?) said they had to make at least one phone with MeeGo | 12:10 |
internetishard | nice way to waste potential. If it's like "fuck it guys, we gotta do this cause a paper says it" - why not try something ambitious and different? | 12:10 |
internetishard | Take an interesting risk | 12:11 |
Luke-Jr | it's a company | 12:11 |
internetishard | yeah yeah... | 12:12 |
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jacekowski | internetishard: because microsoft had experience on phone market | 12:14 |
jacekowski | internetishard: and mobile OS market | 12:14 |
jacekowski | internetishard: in the end, their platform once had almost 100% of the market | 12:14 |
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jacekowski | internetishard: so microsoft was much better option | 12:14 |
internetishard | It's going to be interesting to see a microsoft product that is more open than an apple product | 12:17 |
internetishard | Or maybe less of a walled garden | 12:18 |
Luke-Jr | … | 12:18 |
Luke-Jr | Microsoft has *always* been more open than Apple | 12:18 |
internetishard | Really? Maybe I've been Linux exclusive for too long... :X | 12:19 |
Luke-Jr | yes | 12:19 |
Luke-Jr | Microsoft made software and didn't care what hardware you ran it on | 12:19 |
Luke-Jr | Apple was always "you run our software on our hardware, period" | 12:20 |
internetishard | I was thinking more in terms of DRM and file management... | 12:20 |
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Lava_Croft | 'open' is not the word | 13:33 |
Lava_Croft | 'indifferent' is a better word | 13:33 |
Lava_Croft | MS just followed where MS thought the money was | 13:34 |
chem|st | open to hardware does not mean hackable... | 13:34 |
jacekowski | internetishard: microsoft never cared about drm really | 13:34 |
jacekowski | internetishard: it was just doing what industry wanted | 13:35 |
jacekowski | and they wanted drm | 13:35 |
jacekowski | so microsoft gave them that | 13:35 |
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jacekowski | + parts of windows are open source | 13:35 |
jacekowski | .net is fully open source | 13:35 |
chem|st | jacekowski: what about trying to get hardware manufacturer to build drm hardware and stuff? | 13:36 |
jacekowski | like what/ | 13:36 |
jacekowski | TPM? | 13:36 |
Lava_Croft | ill go completely off-topic and ask if there's any System Shock 2 / Thief 2 fans here | 13:36 |
jacekowski | TPM was never meant for drm | 13:36 |
Lava_Croft | since there's quite good news! :) | 13:37 |
jacekowski | it was an option | 13:37 |
jacekowski | but everyone knew that it's not going to work | 13:37 |
deepy | Lava_Croft: yes | 13:38 |
Lava_Croft | deepy: http://www.ttlg.com/forums/showthread.php?t=140085 | 13:38 |
Lava_Croft | Some patch come out of nowhere, on some French forum | 13:38 |
Lava_Croft | It's a huge update to both the Dark engine and its editor, DromEd | 13:38 |
Lava_Croft | It's just such big and lovely news that i have to spam it anywhere i can :P | 13:39 |
deepy | AIs now breathe from their head instead of their stomachs. They will no longer drown when up to their waist in water. | 13:39 |
Lava_Croft | ;) | 13:40 |
Lava_Croft | never noticed? :) | 13:40 |
Lava_Croft | that changelog is far from incomplete:) | 13:40 |
Lava_Croft | er | 13:40 |
Lava_Croft | complete* | 13:40 |
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chem|st | lol | 13:42 |
deepy | I'm more of a 'darnit!' | 13:52 |
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int_ua | freemangordon: isn't the flashplayer 10 a joke? | 16:23 |
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int_ua | Hey, anyone, is Flash 10 for N900 truly released? | 16:30 |
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kerio | int_ua: it is | 16:47 |
int_ua | kerio: why no official source then? | 16:48 |
kerio | because it was somewhat leaked | 16:48 |
kerio | from the "unreleased" ovi repo | 16:48 |
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Pali | freemangordon, DocScrutinizer05, see this: http://www.spinics.net/lists/lm-sensors/msg32275.html | 16:59 |
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Pali | maybe n900 has similar temperature formula | 17:00 |
Pali | Degree Celcius = 1 / (t1 + 1/298)- 273 | 17:00 |
Pali | where t1 = (1/B)* ln(( ADCval * 2.5)/(R25*ITBAT*255)) | 17:00 |
Pali | Default values of R25, B, ITBAT are 10e3, 3380 and 50e-6 respectively | 17:00 |
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Pali | bme tell me: 0x64 0x00 0x34 0x0d 0x2a 0x01 and 0x0D34 is 3380 | 17:19 |
Pali | from cal data | 17:20 |
Pali | and 0x012A is 298 | 17:22 |
Pali | why is in above patch "1/298" and default value for B=3380?? | 17:23 |
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Pali | 0x0063 is 100 | 17:24 |
Pali | *0x0064 | 17:24 |
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jacekowski | endianess and shit | 17:25 |
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Pali | jacekowski, yes, it is similar | 17:29 |
Pali | I think that bme does not send me random data | 17:29 |
Pali | and also not random in cal | 17:29 |
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Pali | nokia used similar formula as in above patch | 17:30 |
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Pali | look also: https://lkml.org/lkml/2011/6/28/190 "TBAT look-up table" | 17:54 |
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mark_g44 | fakeroot: preload library `libfakeroot-sysv.so' not found, aborting. | 18:03 |
mark_g44 | scratchbox on debian 64bit | 18:03 |
Pali | Now, finally I have temperature formula for n900!!! 1 / ( (1/3380) * ln((RAW*2.5)/(100*0.0067*255)) + 1/298 ) | 18:04 |
mark_g44 | any solutions for fakeroot ? :/ | 18:04 |
Pali | tested on values from DocScrutinizer05 and is correct! | 18:05 |
Pali | freemangordon, see ^^^ | 18:05 |
Pali | formula is same as in patch https://lkml.org/lkml/2011/6/28/190 with B=3380 R25=100 ITBAT=0.0067 | 18:06 |
Pali | in cal data (and also from bme) I got 3 numbers: 3380, 100 and 298 | 18:07 |
Pali | ITBAT was calculated from DocScrutinizer data | 18:07 |
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Pali | note that in mtd1 cal in section bme is this line: 05 03 03 00 64 00 34 0D 2A 01 00 00 00 00 00 00 | 18:17 |
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Pali | ping merlin1991 | 18:25 |
merlin1991 | Pali: pong | 18:25 |
Pali | you had problems with u-boot | 18:25 |
merlin1991 | yes | 18:26 |
Pali | did you tried to run rescueos from u-boot on that n900? | 18:26 |
kerio | DocScrutinizer05: today after removing and putting back the battery i still had the phantom ACT_DEAD mode | 18:26 |
kerio | ;_; | 18:26 |
merlin1991 | Pali: yeah, though I don't have the data anymore, but I can grab it for you later today | 18:26 |
Pali | ok | 18:26 |
Pali | I need output of dumpatags from rescue os | 18:27 |
Pali | if n900 uboot can boot rescue os... | 18:27 |
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_PanzerSajt | Hy! I have read the post about this new flash version. They claim that this is really flash10. I could agree with them on this topic, but my question is it has HW acceleration? | 19:14 |
ShadowJK | only one I know of is couple years old "demo" from TI, that doesn't quite work | 19:18 |
_PanzerSajt | ShadowJK, yes I have seen that demo too | 19:19 |
ShadowJK | dont know of anything else, besides adobe having withdrawn flash from android | 19:19 |
ruskie | http://www.h-online.com/security/news/item/Android-smartphones-USSD-calls-can-kill-SIM-cards-1719230.html <-- fun | 19:21 |
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kerio | ah fuck | 20:03 |
kerio | my phonet is been crashing | 20:03 |
kerio | *has | 20:03 |
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kerio | this is not good | 20:04 |
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kerio | DocScrutinizer05: halp | 20:05 |
SpeedEvil | odd | 20:09 |
SpeedEvil | crashing how? | 20:09 |
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kerio | SpeedEvil: i open the powerkey menu, "TabletPC mode" isn't there | 20:11 |
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kerio | i'm just worried this is a precursor for the rapuyama problem | 20:12 |
SpeedEvil | odd | 20:14 |
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kerio | i know | 20:18 |
kerio | it happened this morning | 20:18 |
kerio | i saw the "no sim" logo flash | 20:18 |
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kerio | ~n900-full-reset | 20:18 |
infobot | extra, extra, read all about it, n900-full-reset is when the user presses the PWRON (power-on) button for 8 seconds and removes the battery in the next 8 seconds, the TPS65950 enters NO SUPPLY state instead of BACKUP state, even if a valid backup battery is present. In such a situation, the backup domain registers are also reset, along with the VRRTC domain registers. | 20:19 |
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DocScrutinizer51 | Pali: coool! | 20:50 |
Pali | :-) | 20:51 |
Pali | last missing is correct BSI value | 20:53 |
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DocScrutinizer51 | well, I really hope somebody with a DMM and a 'new' BL5J can probe the resistance of BSI | 20:57 |
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Pali | in bmeipc is also message for raw bsi value & message for calibration data | 21:04 |
Pali | I will try to write program which ask it from bme | 21:04 |
SpeedEvil | new? | 21:05 |
SpeedEvil | by does age matter | 21:05 |
SpeedEvil | why | 21:05 |
DocScrutinizer05 | new model | 21:06 |
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Pali | new table is here: https://gitorious.org/rx51-bme-replacement/rx51_battery/commit/4b81bc418e9a1d2d224325c34bd58412b97a377d | 21:09 |
Pali | temperature between 201.81 C and -20.02 C | 21:09 |
Pali | DocScrutinizer05, see ^^ | 21:09 |
Pali | it is enought? | 21:09 |
DocScrutinizer05 | nope, we need at very least -25°C | 21:10 |
DocScrutinizer05 | iirc | 21:10 |
freemangordon | do it -35 | 21:10 |
freemangordon | (finlamd, you know :) ) | 21:11 |
Pali | then table will be too big | 21:11 |
freemangordon | finland even | 21:11 |
SpeedEvil | my freezer hits< -45 | 21:11 |
freemangordon | Pali: how big? | 21:11 |
Pali | now we have 512 values | 21:11 |
freemangordon | 201.81 deg?!? Pali, WTF? :D:D:D | 21:11 |
Pali | for raw value 1 | 21:12 |
freemangordon | well, IIRC it is 10 bit ADC | 21:12 |
Pali | so 1024 values? | 21:13 |
freemangordon | yes | 21:13 |
Pali | ok | 21:14 |
freemangordon | but based on 1024 values, we can interpolate | 21:14 |
freemangordon | (but don;t tell doc) | 21:14 |
Pali | so max (raw) adc value is 1024 | 21:14 |
freemangordon | 1023? | 21:14 |
Pali | or 1023? | 21:14 |
Pali | because 0 does not make sense | 21:14 |
freemangordon | should be 1023 | 21:14 |
freemangordon | why? | 21:14 |
Pali | see formula | 21:15 |
Pali | log(0) is not defined | 21:15 |
freemangordon | aah, i see | 21:16 |
freemangordon | then your formula is incorrect :P | 21:16 |
Pali | maybe, but is based on some samsung chip and that chip has 2/3 parameters same | 21:17 |
Pali | and after calculating third param it is ok for Doc data | 21:17 |
Pali | raw 1023 = -32.53°C | 21:18 |
SpeedEvil | so are any measurements needed, and if so, what? | 21:18 |
freemangordon | Pali: so this formula gives the same reading as BME? | 21:18 |
Pali | same (+/-1°C) as Doc BME | 21:19 |
Pali | and seems is same on my n900 bme | 21:20 |
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Pali | but I did not used DocScrutinizer enterprise solution :-) | 21:20 |
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freemangordon | hmm BTW why not using the formula instead of LUT? | 21:22 |
DocScrutinizer05 | Pali: pretty please use a sparse table | 21:22 |
Pali | no natural logarithm function in kernel | 21:22 |
freemangordon | having 8k LUT does not seem a good idea to me | 21:22 |
freemangordon | Pali: i can interpolate it to polinomial | 21:23 |
DocScrutinizer05 | we fscking don't need a 8k LUT | 21:23 |
DocScrutinizer05 | and we don't need friggin interpolation | 21:23 |
freemangordon | hehe | 21:23 |
DocScrutinizer05 | just pick next larger raw value tuple from LUT | 21:23 |
DocScrutinizer05 | have one tuple per degree centigrade | 21:24 |
freemangordon | hmm, sounds sane | 21:24 |
freemangordon | that way we'll have about 130 ints | 21:24 |
DocScrutinizer05 | right | 21:25 |
freemangordon | range -32 to 98 | 21:25 |
DocScrutinizer05 | make that 200 | 21:25 |
freemangordon | dowe really need battery temp above 95? | 21:25 |
DocScrutinizer05 | -50 to +150 | 21:25 |
freemangordon | hehe | 21:26 |
freemangordon | seems the sensor cannot read bellow 32 | 21:26 |
Pali | DocScrutinizer05, min is -32.53 | 21:26 |
DocScrutinizer05 | oh, ok | 21:26 |
Pali | or, is there way how to call natural logarithm in kernel? | 21:26 |
freemangordon | and we dont really need anything above 75 (maybe) | 21:26 |
DocScrutinizer05 | no way | 21:27 |
DocScrutinizer05 | we need 90 minimum | 21:27 |
freemangordon | DocScrutinizer05: agree, that is why i said 98 | 21:27 |
freemangordon | but 150 is insane | 21:27 |
SpeedEvil | 95 c is 'throw t away as hard as you can' | 21:27 |
DocScrutinizer05 | since... we would like to put up a highscore eventually ;-P | 21:27 |
freemangordon | :) | 21:28 |
freemangordon | Can those batteries withstand temps over 70 deg? | 21:28 |
DocScrutinizer05 | yes, particularly because 150 real °C is insane, we want it converted to watch our hw actually *go insane* | 21:29 |
DocScrutinizer05 | look, if a user drops in here, asking about "my bat has 75" we all go WAAAAH! duck and cover!! When he comes in with "my bat has 150" we laugh and tell him to take it to a repair shop to swap the thermistor | 21:30 |
Pali | 1 = 201.81, 2 = 159.65, 3 = 138.29, 4 = 124.37, 5 = 114.21, 6 = 106.28, 7 = 99.82, 8 = 94.41, 7 = 89.76 | 21:30 |
Pali | this is not very usable ^^^ | 21:30 |
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DocScrutinizer05 | pretty fine | 21:30 |
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freemangordon | why not? | 21:31 |
DocScrutinizer05 | it also doesn't hurt to use those 7 entries in LUT | 21:31 |
freemangordon | if your raw is over 201, then temp is 2 deg and so on | 21:31 |
DocScrutinizer05 | I'd really have 1. and last LUT tupel cover the ADC extrema | 21:32 |
freemangordon | aah, it is raw/temp | 21:32 |
freemangordon | ooh, ant it highly unlinear, so we'll have way less that 130 | 21:33 |
DocScrutinizer05 | so if ADC/raw is 0 or 1, you output 202°C | 21:33 |
freemangordon | :nod: | 21:33 |
freemangordon | naah | 21:34 |
freemangordon | it is rather 350 | 21:34 |
DocScrutinizer05 | if it's in a range of dunno 120...135, you find next lower tupel in LUT which is 120raw=54° | 21:34 |
DocScrutinizer05 | for 53° you next LUT tupel is 136=53°, and will get picked for ADC 136...dunno151 | 21:36 |
DocScrutinizer05 | get the pickture? | 21:36 |
DocScrutinizer05 | basically your LUT looks exactly like my spamming I've done here | 21:37 |
freemangordon | Pali: what is the precision BME return value has? | 21:37 |
DocScrutinizer05 | and on pastebin | 21:37 |
DocScrutinizer05 | same, since it's same ADC | 21:37 |
DocScrutinizer05 | just other mux chan | 21:37 |
Pali | freemangordon, integer (1°C) | 21:37 |
DocScrutinizer05 | ooh sorry, BME not BSI | 21:38 |
freemangordon | Pali: then we don;t need anything with higher precision | 21:38 |
Pali | but kernel driver must report 1/100°C | 21:38 |
freemangordon | *100 :P | 21:38 |
Pali | ok :-) | 21:38 |
DocScrutinizer05 | it's even insane to get 1° precision from battemp | 21:39 |
DocScrutinizer05 | as noisy as it is | 21:39 |
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freemangordon | Pali: we'll never have a really high precision temp measurement because of the differences in thermistors | 21:39 |
DocScrutinizer05 | that too | 21:39 |
freemangordon | and we don't need it in practice | 21:39 |
DocScrutinizer05 | but noise is even worse I'd guess | 21:39 |
freemangordon | so 1deg resolution is perfect | 21:39 |
Pali | what noise? | 21:40 |
DocScrutinizer05 | yep | 21:40 |
DocScrutinizer05 | absolutely | 21:40 |
freemangordon | Pali: from ADC conversion | 21:40 |
freemangordon | for example | 21:40 |
Pali | ok | 21:40 |
DocScrutinizer05 | Pali: look at my full dump on pastebin and watch the raw value skip up and down like mad | 21:40 |
freemangordon | you saw it for capacity calculation | 21:40 |
DocScrutinizer05 | I dunno where from it comes, maybe RF interference or whatnot | 21:40 |
freemangordon | the raw value is not a constant | 21:41 |
DocScrutinizer05 | yep | 21:41 |
kerio | hey DocScrutinizer05 | 21:42 |
kerio | i'm afraid my phonet is dying D: | 21:42 |
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Pali | kerio: sudo stop sscd && sleep 5 && sudo start sscd | 21:43 |
kerio | Pali: i know | 21:43 |
kerio | that's not the problem | 21:43 |
kerio | the problem is that it needed that | 21:44 |
kerio | D: | 21:44 |
DocScrutinizer05 | kerio: and what can I do to make you feel less terrified? | 21:45 |
kerio | DocScrutinizer05: hug me and tell me everything is going to be fine ;_; | 21:46 |
DocScrutinizer05 | I have a hard time telling lies | 21:46 |
kerio | k ._. | 21:46 |
DocScrutinizer05 | (a lie, a lie!) ;-P | 21:46 |
DocScrutinizer05 | I just can tell you odds are you're wrong as usual ;-) | 21:47 |
kerio | phew | 21:48 |
DocScrutinizer05 | reflash stock PR1.3 without any leete apps or kernels or whatever | 21:48 |
DocScrutinizer05 | test for a few days | 21:48 |
kerio | ew | 21:48 |
kerio | no | 21:48 |
DocScrutinizer05 | if problem persists, you probably got a real problem | 21:48 |
kerio | meh, it's probably a flaky SIM anyway | 21:49 |
DocScrutinizer05 | if not, somebody else has a real problem | 21:49 |
kerio | or maybe it's smartreflex | 21:49 |
kerio | DocScrutinizer05: ? | 21:49 |
DocScrutinizer05 | possible | 21:49 |
kerio | nah, it's not SR :) | 21:49 |
DocScrutinizer05 | uhuh | 21:49 |
kerio | rapuyama isn't SRed | 21:49 |
DocScrutinizer05 | but maybe SIM power is | 21:50 |
kerio | oooooooooooooooooh | 21:50 |
DocScrutinizer05 | I haven't checked it | 21:50 |
kerio | neat | 21:50 |
kerio | hm, where would one check something like this? | 21:50 |
DocScrutinizer05 | toldya SR isn't even evaluated to meant to work, on a circuit level | 21:50 |
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DocScrutinizer05 | maybe they used a LDO for SIM that is considered DSP by SR | 21:51 |
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DocScrutinizer05 | obviously you check that stuff in schematics, my favourity daily work, so I won't do it today for friggin SR | 21:52 |
kerio | DocScrutinizer05: you could check it with a multimeter! | 21:52 |
DocScrutinizer05 | you follow each single connection and read the datasheet specs for all the pins it connects, and ponder if they match and make sense | 21:53 |
kerio | usually, do they? | 21:53 |
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DocScrutinizer05 | this way you find LP5523 has a IRQ output to OMAP GPIO that 'ideally' can fry your whole SOC since you can switch it to a mode where it supplies Vbat to GPIO which is 1.8V | 21:54 |
DocScrutinizer05 | (do they?) obviously not always | 21:54 |
DocScrutinizer05 | otherwise I hadn't spotted that | 21:54 |
kerio | woooooooah | 21:55 |
* kerio ponders about a self-destruct mechanism | 21:55 | |
DocScrutinizer05 | other "errors" can be on purpose, when e.g. they deliberately decided SR isn't worth it and they better use that LDO for SIM power than for separate DSP power | 21:56 |
DocScrutinizer05 | (just a hypothetical scenario) | 21:56 |
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DocScrutinizer05 | then me and my EE-supapowas have to decide if it's sane and sensible and how it's meant to work, or if they outright fsckd it up | 21:57 |
DocScrutinizer05 | if I'm lucky, they left a note in kernel source about it | 21:58 |
DocScrutinizer05 | like /* don't use SR here, since this LDO is for SIM! */ | 21:58 |
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Pali | freemangordon, DocScrutinizer05: https://gitorious.org/rx51-bme-replacement/rx51_battery/commit/154913d0c633d5903422cabe1178418d1ba7aad1 | 22:35 |
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Pali | only two small tables | 22:35 |
Pali | first: TEMP = rx51_temp_table1[RAW] second: RAW = rx51_temp_table2[TEMP-rx51_temp_table2_first] | 22:36 |
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DocScrutinizer05 | Pali: some weird var naming aside, it looks quite nice | 22:50 |
DocScrutinizer05 | e.g I'd not call the var to store result of ADC temperature: >> int temperature = rx51_battery_read_adc(0); << wasn't simple >> int raw << a better name? | 22:51 |
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DocScrutinizer05 | replace | 22:53 |
DocScrutinizer05 | /* ADC channels are 10 bit, higher value are undefined */ | 22:53 |
DocScrutinizer05 | 114if (temperature >= 1024) | 22:53 |
DocScrutinizer05 | 190115 | 22:53 |
DocScrutinizer05 | meh | 22:53 |
DocScrutinizer05 | replace >> if (temperature >= 1024) << by >> if (temperature >= 2^10) << | 22:54 |
DocScrutinizer05 | or 1<<10 | 22:55 |
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DocScrutinizer05 | err 2**10 | 22:56 |
DocScrutinizer05 | 1<<10 is even nicer | 22:57 |
kerio | huh, C has "**" as an operator? | 22:59 |
fizzie | It doesn't. Though given int *p, you could write 2**p. (To get multiplication and dereferencing.) | 23:00 |
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DocScrutinizer05 | nah, it of course hasn't | 23:03 |
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DocScrutinizer05 | Pali: the following two lines definitely look kinda nonsensical in 2nd line: | 23:03 |
DocScrutinizer05 | if (temperature < rx51_temp_table2[min]) | 23:04 |
DocScrutinizer05 | 123return rx51_temp_table2_first-min; | 23:04 |
DocScrutinizer05 | and lines 124,125 look no less weird | 23:04 |
DocScrutinizer05 | I think I know what you intended, but due to suboptimal var names it again gets confusing and might have confused you (or me ;-D) | 23:05 |
Pali | 1. if RAW value is < 25 return 53 | 23:07 |
DocScrutinizer05 | I'd call min rather tab2_offset_centigrade | 23:07 |
Pali | min & max means index of array | 23:07 |
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DocScrutinizer05 | Pali: 1. min=0, so if (temperature < rx51_temp_table2[0]) return rx51_temp_table2_first; | 23:08 |
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Pali | it is correct | 23:08 |
DocScrutinizer05 | so scratch my remark 2 posts above aboiut name of min, I already got confused | 23:09 |
Pali | or why not? | 23:09 |
DocScrutinizer05 | actually what you *meant* is: if (temperature < rx51_temp_table2[min]) return min + rx51_temp_table2_first; | 23:10 |
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DocScrutinizer05 | err, or what | 23:12 |
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DocScrutinizer05 | omg, you sorted the table as index==offset down from offset-max ? | 23:12 |
Pali | see usage of table2: RAW = rx51_temp_table2[TEMP-rx51_temp_table2_first] | 23:13 |
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DocScrutinizer05 | yeah, I see RAW there, but nowhere else in the code | 23:13 |
Pali | ah, yes, raw is "int temperature" | 23:14 |
Pali | I will rename "temperature" to "raw" | 23:14 |
DocScrutinizer05 | and I'm not interested in calculating RAW from TEMP, no? | 23:14 |
Pali | then invert it :-) | 23:15 |
DocScrutinizer05 | why don't you invert it? | 23:15 |
Pali | because it is not possible | 23:15 |
DocScrutinizer05 | i c | 23:15 |
Pali | you have more values assigned to one index | 23:15 |
DocScrutinizer05 | yesyes | 23:16 |
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DocScrutinizer05 | still it nukes my mind to figure what's real centigrade Celsius for first entry in rx51_temp_table2 | 23:17 |
DocScrutinizer05 | since I'd call rx51_temp_table2_first simply tab2_offset_centigrade_C | 23:18 |
DocScrutinizer05 | and explain sort order of that rx51_temp_table2 verbatim | 23:19 |
DocScrutinizer05 | maybe I'm too simple today | 23:21 |
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Pali | first table is easy and direct: table1[1] = 201 means RAW 1 = 201°C; table[2] = 159 means RAW 2 = 159°C | 23:21 |
DocScrutinizer05 | yes | 23:23 |
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Pali | but inversion of first table is not injective, e.g 203°C, 202°C, 201°C all have RAW value 1 | 23:24 |
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Pali | so it is better so store RAW values 1-24 in table RAW-->TEMP | 23:25 |
Pali | now look at second table. it convert TEMP-->RAW | 23:26 |
Pali | TEMP -31 = RAW 937; TEMP -32 = RAW 993 | 23:28 |
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DocScrutinizer05 | Pali: so far I already got it | 23:28 |
kerio | huh, C has "**" as an operator? | 23:28 |
kerio | whoops, sorry | 23:28 |
DocScrutinizer05 | so first entry of tab2 has raw value for 53°C | 23:29 |
kerio | i meant to do up and enter on a different window | 23:29 |
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Pali | DocScrutinizer05, yes | 23:29 |
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DocScrutinizer05 | another nitpicking: rx51_temp_table2 -> rx51_temp_table_main; rx51_temp_table1 -> rx51_temp_table_aux | 23:31 |
Pali | DocScrutinizer05, so you did not have exam from calculus this month, right? :D | 23:31 |
DocScrutinizer05 | /* this rx51_temp_table_aux holds °C values for index[raw] in 1..24 */ | 23:33 |
DocScrutinizer05 | /* this rx51_temp_table_main holds raw values for index[°C] starting at offset 53°C for first entry and counting down 1°C for each consecutive entry */ | 23:34 |
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DocScrutinizer05 | /* raw values in between table entries are using next lower(?) °C value as result */ | 23:36 |
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Pali | first table is funcion with domain (raw) [1,24] and second table is function with domain (temp) [53, -32] | 23:36 |
DocScrutinizer05 | oops, actually *higer value* since min means high temperature and max means low temperature | 23:38 |
DocScrutinizer05 | see why I find this a tad confusing? | 23:38 |
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DocScrutinizer05 | but I admit your solution is probably more optimized than my more prototypical approach to have one table with (int raw, int temp) tuples | 23:45 |
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DocScrutinizer05 | and only have one tuple per temp value (like your table2 does) | 23:46 |
DocScrutinizer05 | it didn't occur to me to use the index | 23:47 |
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DocScrutinizer05 | ~6+14 + 25 | 23:48 |
infobot | 45 | 23:48 |
DocScrutinizer05 | meh | 23:48 |
DocScrutinizer05 | ~6*14 + 25 | 23:48 |
infobot | 109 | 23:48 |
DocScrutinizer05 | additional int, but less code to handle special cases and two tables | 23:49 |
DocScrutinizer05 | probably your solution is 80 bytes shorter than mine | 23:49 |
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Pali | there is still way how to decrease module binary size | 23:52 |
Pali | only 26 values are > 255, they can be stored in third table (16 bit) and other as 8bit numbers | 23:54 |
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DocScrutinizer05 | eeeeeek | 23:59 |
vi__ | EEEEEEKK! | 23:59 |
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