IRC log of #maemo for Thursday, 2012-09-27

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jikkI'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"00:18
jikkAs suggested by this post -
povbot_Bug 7596: redirect-gateway broken with 2G/3G connections00:18
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jikkpovbot_: Yeah I've read about that (in the above post). After the VPN is up, I can manually run the command, and all is fine.00:19
povbot_jikk: Error: "Yeah" is not a valid command.00:19
jikkpovbot_: Oh, you're a bot.00:20
povbot_jikk: Error: "Oh," is not a valid command.00:20
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jikkGuess it was in the name.00:20
jikkpovbot_: botsnack00:20
povbot_jikk: Error: "botsnack" is not a valid command.00:20
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jikkMeh, was missing the #!/bin/sh at the top of the script.00:28
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DocScrutinizer51dang, either mediaplayer gone apeshit, or recaller recorded 80min of pure silence00:55
infobotthanks, DocScrutinizer5100:56
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FIQ|n900how come that HAM crashes after a program has been installed?00:59
FIQ|n900I just enabled devel on this device to install backupmenu and xchat01:01
FIQ|n900backupmenu installed *crash*01:01
FIQ|n900xchat as well, also followed by HAM crash01:01
FIQ|n900or, freeze during the "1 application has been installed" dialog01:01
FIQ|n900to be exact01:02
DocScrutinizer51well, THAT's normal01:02
DocScrutinizer51just wait 5min01:02
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FIQ|n900oh great01:02
DocScrutinizer51until HAM finsihed its pressing afairs01:02
FIQ|n900the random "hide all repos" thing...01:03
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FIQ|n900now I can't disable devel to proceed with installing rootsh, perfect01:03
FIQ|n900unless I like waiting 10min01:03
DocScrutinizer51well HAM with devel enabled is basically unbearable01:04
FIQ|n900I really don't like HAM, should have installed rootsh so I could avoid HAM completly ...01:04
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FIQ|n900first, that si01:04
DocScrutinizer51but since it doesn't need pushing or kicking suring the 10min, you as well can get a beer and live with it01:05
FIQ|n900ok this hide repos bug is annoying01:05
FIQ|n900don't get what causes it and don't know how to fix/work around01:06
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DocScrutinizer05nfc which bug you're talking about01:13
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GGonso where is maemo for raspberry pi?11:55
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Luke-JrGGon: never?11:59
GGonmeego? :-P11:59
Luke-JrRPi isn't a Nokia product, and Nokia's abandoned Maemo anyway11:59
GGonthen port cssu to it :-P11:59
Luke-JrGGon: you realize cssu/maemo/etc is not open source?12:00
GGonoh. thought cssu was12:00
GGoni was honestly joking anyways12:01
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internetishardwhy the hell does nokia make both the n9 and the lumia 920?12:05
internetishardWhy do they stretch themselves like that???12:05
jacekowskin9 is old phone12:06
internetishardYeah, not that old - and if they keep flip flopping with OSs all of the time they'll never gain any momentum12:07
Luke-Jrinternetishard: Nokia has abandoned all Linux12:08
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internetishardwtf was n9? A test? Old parts that they wanted to get rid of? :P12:09
Luke-Jrafaik Nokia's agreement with Intel(?) said they had to make at least one phone with MeeGo12:10
internetishardnice 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
internetishardTake an interesting risk12:11
Luke-Jrit's a company12:11
internetishardyeah yeah...12:12
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jacekowskiinternetishard: because microsoft had experience on phone market12:14
jacekowskiinternetishard: and mobile OS market12:14
jacekowskiinternetishard: in the end, their platform once had almost 100% of the market12:14
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jacekowskiinternetishard: so microsoft was much better option12:14
internetishardIt's going to be interesting to see a microsoft product that is more open than an apple product12:17
internetishardOr maybe less of a walled garden12:18
Luke-JrMicrosoft has *always* been more open than Apple12:18
internetishardReally? Maybe I've been Linux exclusive for too long... :X12:19
Luke-JrMicrosoft made software and didn't care what hardware you ran it on12:19
Luke-JrApple was always "you run our software on our hardware, period"12:20
internetishardI was thinking more in terms of DRM and file management...12:20
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Lava_Croft'open' is not the word13:33
Lava_Croft'indifferent' is a better word13:33
Lava_CroftMS just followed where MS thought the money was13:34
chem|stopen to hardware does not mean hackable...13:34
jacekowskiinternetishard: microsoft never cared about drm really13:34
jacekowskiinternetishard: it was just doing what industry wanted13:35
jacekowskiand they wanted drm13:35
jacekowskiso microsoft gave them that13:35
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jacekowski+ parts of windows are open source13:35 is fully open source13:35
chem|stjacekowski: what about trying to get hardware manufacturer to build drm hardware and stuff?13:36
jacekowskilike what/13:36
Lava_Croftill go completely off-topic and ask if there's any System Shock 2 / Thief 2 fans here13:36
jacekowskiTPM was never meant for drm13:36
Lava_Croftsince there's quite good news! :)13:37
jacekowskiit was an option13:37
jacekowskibut everyone knew that it's not going to work13:37
deepyLava_Croft: yes13:38
Lava_CroftSome patch come out of nowhere, on some French forum13:38
Lava_CroftIt's a huge update to both the Dark engine and its editor, DromEd13:38
Lava_CroftIt's just such big and lovely news that i have to spam it anywhere i can :P13:39
deepyAIs now breathe from their head instead of their stomachs. They will no longer drown when up to their waist in water.13:39
Lava_Croftnever noticed? :)13:40
Lava_Croftthat changelog is far from incomplete:)13:40
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deepyI'm more of a 'darnit!'13:52
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int_uafreemangordon: isn't the flashplayer 10 a joke?16:23
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int_uaHey, anyone, is Flash 10 for N900 truly released?16:30
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kerioint_ua: it is16:47
int_uakerio: why no official source then?16:48
keriobecause it was somewhat leaked16:48
keriofrom the "unreleased" ovi repo16:48
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Palifreemangordon, DocScrutinizer05, see this:
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Palimaybe n900 has similar temperature formula17:00
PaliDegree Celcius = 1 / (t1 + 1/298)- 27317:00
Paliwhere t1 = (1/B)* ln(( ADCval * 2.5)/(R25*ITBAT*255))17:00
PaliDefault values of R25, B, ITBAT are 10e3, 3380 and 50e-6 respectively17:00
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Palibme tell me: 0x64 0x00 0x34 0x0d 0x2a 0x01 and 0x0D34 is 338017:19
Palifrom cal data17:20
Paliand 0x012A is 29817:22
Paliwhy is in above patch "1/298" and default value for B=3380??17:23
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Pali0x0063 is 10017:24
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jacekowskiendianess and shit17:25
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Palijacekowski, yes, it is similar17:29
PaliI think that bme does not send me random data17:29
Paliand also not random in cal17:29
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Palinokia used similar formula as in above patch17:30
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Palilook also: "TBAT look-up table"17:54
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mark_g44fakeroot: preload library `' not found, aborting.18:03
mark_g44scratchbox on debian 64bit18:03
PaliNow, finally I have temperature formula for n900!!! 1 / ( (1/3380) * ln((RAW*2.5)/(100*0.0067*255)) + 1/298 )18:04
mark_g44any solutions for fakeroot ? :/18:04
Palitested on values from DocScrutinizer05 and is correct!18:05
Palifreemangordon, see ^^^18:05
Paliformula is same as in patch with B=3380 R25=100 ITBAT=0.006718:06
Paliin cal data (and also from bme) I got 3 numbers: 3380, 100 and 29818:07
PaliITBAT was calculated from DocScrutinizer data18:07
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Palinote 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 0018:17
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Paliping merlin199118:25
merlin1991Pali: pong18:25
Paliyou had problems with u-boot18:25
Palidid you tried to run rescueos from u-boot on that n900?18:26
kerioDocScrutinizer05: today after removing and putting back the battery i still had the phantom ACT_DEAD mode18:26
merlin1991Pali: yeah, though I don't have the data anymore, but I can grab it for you later today18:26
PaliI need output of dumpatags from rescue os18:27
Paliif n900 uboot can boot rescue os...18:27
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_PanzerSajtHy! 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
ShadowJKonly one I know of is couple years old "demo" from TI, that doesn't quite work19:18
_PanzerSajtShadowJK, yes I have seen that demo too19:19
ShadowJKdont know of anything else, besides adobe having withdrawn flash from android19:19
ruskie <-- fun19:21
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kerioah fuck20:03
keriomy phonet is been crashing20:03
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keriothis is not good20:04
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kerioDocScrutinizer05: halp20:05
SpeedEvilcrashing how?20:09
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kerioSpeedEvil: i open the powerkey menu, "TabletPC mode" isn't there20:11
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kerioi'm just worried this is a precursor for the rapuyama problem20:12
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kerioi know20:18
kerioit happened this morning20:18
kerioi saw the "no sim" logo flash20:18
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infobotextra, 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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DocScrutinizer51Pali: coool!20:50
Palilast missing is correct BSI value20:53
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DocScrutinizer51well, I really hope somebody with a DMM and a 'new' BL5J can probe the resistance of BSI20:57
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Paliin bmeipc is also message for raw bsi value & message for calibration data21:04
PaliI will try to write program which ask it from bme21:04
SpeedEvilby does age matter21:05
DocScrutinizer05new model21:06
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Palinew table is here:
Palitemperature between 201.81 C and -20.02 C21:09
PaliDocScrutinizer05, see ^^21:09
Paliit is enought?21:09
DocScrutinizer05nope, we need at very least -25°C21:10
freemangordondo it -3521:10
freemangordon(finlamd, you know :) )21:11
Palithen table will be too big21:11
freemangordonfinland even21:11
SpeedEvilmy freezer hits< -4521:11
freemangordonPali: how big?21:11
Palinow we have 512 values21:11
freemangordon201.81 deg?!? Pali, WTF? :D:D:D21:11
Palifor raw value 121:12
freemangordonwell, IIRC it is 10 bit ADC21:12
Paliso 1024 values?21:13
freemangordonbut based on 1024 values, we can interpolate21:14
freemangordon(but don;t tell doc)21:14
Paliso max (raw) adc value is 102421:14
Palior 1023?21:14
Palibecause 0 does not make sense21:14
freemangordonshould be 102321:14
Palisee formula21:15
Palilog(0) is not defined21:15
freemangordonaah, i see21:16
freemangordonthen your formula is incorrect :P21:16
Palimaybe, but is based on some samsung chip and that chip has 2/3 parameters same21:17
Paliand after calculating third param it is ok for Doc data21:17
Paliraw 1023 = -32.53°C21:18
SpeedEvilso are any measurements needed, and if so, what?21:18
freemangordonPali: so this formula gives the same reading as BME?21:18
Palisame (+/-1°C) as Doc BME21:19
Paliand seems is same on my n900 bme21:20
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Palibut I did not used DocScrutinizer enterprise solution :-)21:20
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freemangordonhmm BTW why not using the formula instead of LUT?21:22
DocScrutinizer05Pali: pretty please use a sparse table21:22
Palino natural logarithm function in kernel21:22
freemangordonhaving 8k LUT does not seem a good idea to me21:22
freemangordonPali: i can interpolate it to polinomial21:23
DocScrutinizer05we fscking don't need a 8k LUT21:23
DocScrutinizer05and we don't need friggin interpolation21:23
DocScrutinizer05just pick next larger raw value tuple from LUT21:23
DocScrutinizer05have one tuple per degree centigrade21:24
freemangordonhmm, sounds sane21:24
freemangordonthat way we'll have about 130 ints21:24
freemangordonrange -32 to 9821:25
DocScrutinizer05make that 20021:25
freemangordondowe really need battery temp above 95?21:25
DocScrutinizer05-50 to +15021:25
freemangordonseems the sensor cannot read bellow 3221:26
PaliDocScrutinizer05, min is -32.5321:26
DocScrutinizer05oh, ok21:26
Palior, is there way how to call natural logarithm in kernel?21:26
freemangordonand we dont really need anything above 75 (maybe)21:26
DocScrutinizer05no way21:27
DocScrutinizer05we need 90 minimum21:27
freemangordonDocScrutinizer05: agree, that is why i said 9821:27
freemangordonbut 150 is insane21:27
SpeedEvil95 c is 'throw t away as hard as you can'21:27
DocScrutinizer05since... we would like to put up a highscore eventually  ;-P21:27
freemangordonCan those batteries withstand temps over 70 deg?21:28
DocScrutinizer05yes, particularly because 150 real °C is insane, we want it converted to watch our hw actually *go insane*21:29
DocScrutinizer05look, 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 thermistor21:30
Pali1 = 201.81, 2 = 159.65, 3 = 138.29, 4 = 124.37, 5 = 114.21, 6 = 106.28,  7 = 99.82,  8 = 94.41,  7 = 89.7621:30
Palithis is not very usable ^^^21:30
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DocScrutinizer05pretty fine21:30
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freemangordonwhy not?21:31
DocScrutinizer05it also doesn't hurt to use those 7 entries in LUT21:31
freemangordonif your raw is over 201, then temp is 2 deg and so on21:31
DocScrutinizer05I'd really have 1. and last LUT tupel cover the ADC extrema21:32
freemangordonaah, it is raw/temp21:32
freemangordonooh, ant it highly unlinear, so we'll have way less that 13021:33
DocScrutinizer05so if ADC/raw is 0 or 1, you output 202°C21:33
freemangordonit is rather 35021:34
DocScrutinizer05if it's in a range of dunno 120...135, you find next lower tupel in LUT which is 120raw=54°21:34
DocScrutinizer05for 53° you next LUT tupel is 136=53°, and will get picked for ADC 136...dunno15121:36
DocScrutinizer05get the pickture?21:36
DocScrutinizer05basically your LUT looks exactly like my spamming I've done here21:37
freemangordonPali: what is the precision BME return value has?21:37
DocScrutinizer05and on pastebin21:37
DocScrutinizer05same, since it's same ADC21:37
DocScrutinizer05just other mux chan21:37
Palifreemangordon, integer (1°C)21:37
DocScrutinizer05ooh sorry, BME not BSI21:38
freemangordonPali: then we don;t need anything with higher precision21:38
Palibut kernel driver must report 1/100°C21:38
freemangordon*100 :P21:38
Paliok :-)21:38
DocScrutinizer05it's even insane to get 1° precision from battemp21:39
DocScrutinizer05as noisy as it is21:39
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freemangordonPali: we'll never have a really high precision temp measurement because of the differences in thermistors21:39
DocScrutinizer05that too21:39
freemangordonand we don't need it in practice21:39
DocScrutinizer05but noise is even worse I'd guess21:39
freemangordonso 1deg resolution is perfect21:39
Paliwhat noise?21:40
freemangordonPali: from ADC conversion21:40
freemangordonfor example21:40
DocScrutinizer05Pali: look at my full dump on pastebin and watch the raw value skip up and down like mad21:40
freemangordonyou saw it for capacity calculation21:40
DocScrutinizer05I dunno where from it comes, maybe RF interference or whatnot21:40
freemangordonthe raw value is not a constant21:41
keriohey DocScrutinizer0521:42
kerioi'm afraid my phonet is dying D:21:42
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Palikerio: sudo stop sscd && sleep 5 && sudo start sscd21:43
kerioPali: i know21:43
keriothat's not the problem21:43
keriothe problem is that it needed that21:44
DocScrutinizer05kerio: and what can I do to make you feel less terrified?21:45
kerioDocScrutinizer05: hug me and tell me everything is going to be fine ;_;21:46
DocScrutinizer05I have a hard time telling lies21:46
keriok ._.21:46
DocScrutinizer05(a lie, a lie!) ;-P21:46
DocScrutinizer05I just can tell you odds are you're wrong as usual ;-)21:47
DocScrutinizer05reflash stock PR1.3 without any leete apps or kernels or whatever21:48
DocScrutinizer05test for a few days21:48
DocScrutinizer05if problem persists, you probably got a real problem21:48
keriomeh, it's probably a flaky SIM anyway21:49
DocScrutinizer05if not, somebody else has a real problem21:49
kerioor maybe it's smartreflex21:49
kerioDocScrutinizer05: ?21:49
kerionah, it's not SR :)21:49
keriorapuyama isn't SRed21:49
DocScrutinizer05but maybe SIM power is21:50
DocScrutinizer05I haven't checked it21:50
keriohm, where would one check something like this?21:50
DocScrutinizer05toldya SR isn't even evaluated to meant to work, on a circuit level21:50
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DocScrutinizer05maybe they used a LDO for SIM that is considered DSP by SR21:51
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DocScrutinizer05obviously you check that stuff in schematics, my favourity daily work, so I won't do it today for friggin SR21:52
kerioDocScrutinizer05: you could check it with a multimeter!21:52
DocScrutinizer05you follow each single connection and read the datasheet specs for all the pins it connects, and ponder if they match and make sense21:53
keriousually, do they?21:53
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DocScrutinizer05this 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 1.8V21:54
DocScrutinizer05(do they?) obviously not always21:54
DocScrutinizer05otherwise I hadn't spotted that21:54
* kerio ponders about a self-destruct mechanism21:55
DocScrutinizer05other "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 power21:56
DocScrutinizer05(just a hypothetical scenario)21:56
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DocScrutinizer05then 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 up21:57
DocScrutinizer05if I'm lucky, they left a note in kernel source about it21:58
DocScrutinizer05like /* don't use SR here, since this LDO is for SIM! */21:58
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Palifreemangordon, DocScrutinizer05:
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Palionly two small tables22:35
Palifirst: TEMP = rx51_temp_table1[RAW] second: RAW = rx51_temp_table2[TEMP-rx51_temp_table2_first]22:36
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DocScrutinizer05Pali: some weird var naming aside, it looks quite nice22:50
DocScrutinizer05e.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/* ADC channels are 10 bit, higher value are undefined */22:53
DocScrutinizer05114if (temperature >= 1024)22:53
DocScrutinizer05replace >> if (temperature >= 1024) << by >> if (temperature >= 2^10) <<22:54
DocScrutinizer05or 1<<1022:55
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DocScrutinizer05err 2**1022:56
DocScrutinizer051<<10 is even nicer22:57
keriohuh, C has "**" as an operator?22:59
fizzieIt doesn't. Though given int *p, you could write 2**p. (To get multiplication and dereferencing.)23:00
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DocScrutinizer05nah, it of course hasn't23:03
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DocScrutinizer05Pali:  the following two lines definitely look kinda nonsensical in 2nd line:23:03
DocScrutinizer05if (temperature < rx51_temp_table2[min])23:04
DocScrutinizer05123return rx51_temp_table2_first-min;23:04
DocScrutinizer05and lines 124,125 look no less weird23:04
DocScrutinizer05I 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
Pali1. if RAW value is < 25 return 5323:07
DocScrutinizer05I'd call min rather tab2_offset_centigrade23:07
Palimin & max means index of array23:07
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DocScrutinizer05Pali: 1. min=0, so if (temperature < rx51_temp_table2[0]) return rx51_temp_table2_first;23:08
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Paliit is correct23:08
DocScrutinizer05so scratch my remark 2 posts above aboiut name of min, I already got confused23:09
Palior why not?23:09
DocScrutinizer05actually what you *meant* is: if (temperature < rx51_temp_table2[min]) return min + rx51_temp_table2_first;23:10
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DocScrutinizer05err, or what23:12
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DocScrutinizer05omg, you sorted the table as index==offset down from offset-max ?23:12
Palisee usage of table2: RAW = rx51_temp_table2[TEMP-rx51_temp_table2_first]23:13
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DocScrutinizer05yeah, I see RAW there, but nowhere else in the code23:13
Paliah, yes, raw is "int temperature"23:14
PaliI will rename "temperature" to "raw"23:14
DocScrutinizer05and I'm not interested in calculating RAW from TEMP, no?23:14
Palithen invert it :-)23:15
DocScrutinizer05why don't you invert it?23:15
Palibecause it is not possible23:15
DocScrutinizer05i c23:15
Paliyou have more values assigned to one index23:15
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DocScrutinizer05still it nukes my mind to figure what's real centigrade Celsius for first entry in rx51_temp_table223:17
DocScrutinizer05since I'd call rx51_temp_table2_first   simply   tab2_offset_centigrade_C23:18
DocScrutinizer05and explain sort order of that rx51_temp_table2 verbatim23:19
DocScrutinizer05maybe I'm too simple today23:21
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Palifirst table is easy and direct: table1[1] = 201 means RAW 1 = 201°C; table[2] = 159 means RAW 2 = 159°C23:21
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Palibut inversion of first table is not injective, e.g 203°C, 202°C, 201°C all have RAW value 123:24
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Paliso it is better so store RAW values 1-24 in table RAW-->TEMP23:25
Palinow look at second table. it convert TEMP-->RAW23:26
PaliTEMP -31 = RAW 937; TEMP -32 = RAW 99323:28
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DocScrutinizer05Pali: so far I already got it23:28
keriohuh, C has "**" as an operator?23:28
keriowhoops, sorry23:28
DocScrutinizer05so first entry of tab2 has raw value for 53°C23:29
kerioi meant to do up and enter on a different window23:29
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PaliDocScrutinizer05, yes23:29
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DocScrutinizer05another nitpicking: rx51_temp_table2 -> rx51_temp_table_main;  rx51_temp_table1 -> rx51_temp_table_aux23:31
PaliDocScrutinizer05, so you did not have exam from calculus this month, right? :D23:31
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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Palifirst table is funcion with domain (raw) [1,24] and second table is function with domain (temp) [53, -32]23:36
DocScrutinizer05oops, actually *higer value* since min means high temperature and max means low temperature23:38
DocScrutinizer05see why I find this a tad confusing?23:38
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DocScrutinizer05but I admit your solution is probably more optimized than my more prototypical approach to have one table with (int raw, int temp) tuples23:45
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DocScrutinizer05and only have one tuple per temp value (like your table2 does)23:46
DocScrutinizer05it didn't occur to me to use the index23:47
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DocScrutinizer05~6+14 + 2523:48
DocScrutinizer05~6*14 + 2523:48
DocScrutinizer05additional int, but less code to handle special cases and two tables23:49
DocScrutinizer05probably your solution is 80 bytes shorter than mine23:49
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Palithere is still way how to decrease module binary size23:52
Palionly 26 values are > 255, they can be stored in third table (16 bit) and other as 8bit numbers23:54
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