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| 01:16:36 | __Bilgus | speachy ( logs) Xduoo X3 battery bench 12 hours https://pastebin.com/L2Yb1A6V |
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| 08:40:06 | speachy | __Bilgus, a recalibrated curve and runtime current estimates are now committed. |
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| 08:56:44 | speachy | that 12h runtime represents 50% better than the manufacturer's claims. |
| 08:58:33 | johnb2 | There exist 2 different batteries: one with 1500 mAh (model has a button ESC, one with 2000 mAh). |
| 09:00 |
| 09:02:15 | speachy | johnb2: for the x3 you mean? |
| 09:02:28 | johnb2 | yes |
| 09:02:53 | speachy | probably isn't any way to tell them apart at runtime though.. |
| 09:03:12 | johnb2 | maybe the website still refers to the first version (1500) or RB is doing better. |
| 09:03:29 | johnb2 | No, probably not. |
| 09:04:05 | johnb2 | AFAIK, it is just different labeling and different battery for the two models. |
| 09:04:06 | speachy | I don't think the OF utilized dynamic clocking, if the other ingenic/linux-based players are any indication. |
| 09:04:57 | johnb2 | I used to have an X3 a few years ago - and just ordered one seeing you working on it ;-) |
| 09:05:01 | | Quit akaWolf (Ping timeout: 264 seconds) |
| 09:05:53 | johnb2 | I found some better photos of the device taken apart in a German forum and asked the guys whether I can upload them to the wiki. |
| 09:06:36 | johnb2 | On head-fi some folks replace the dark screen with some transparent plastic. |
| 09:07:09 | johnb2 | These photos show the screen from inside: |
| 09:07:26 | johnb2 | http://www.hifi-forum.de/viewthread-125-9819-2.html#91 |
| 09:08:50 | johnb2 | In this thread they have a link to a replacement battery on Aliexpress, which are hard to find. |
| 09:08:53 | | Join pamaury [0] (~pamaury@rockbox/developer/pamaury) |
| 09:09:09 | johnb2 | Is it ok to add a link to it on our Wiki (X3 page)? |
| 09:10:10 | | Join __bILGUS [0] (41ba23be@65.186.35.190) |
| 09:10:27 | __bILGUS | JOHNB you never cease to amaze me lol |
| 09:15:02 | johnb2 | 1500 is the older version, BTW. |
| 09:18:14 | speachy | johnb2: I ordered five of those batteries a couple of months ago. one's in my X3 now. they're not an exact replacement though. |
| 09:18:28 | speachy | and yeah, go ahead and add the link. |
| 09:18:53 | speachy | I assume the second internal photo is the smaller-capacity battery? |
| 09:22:16 | johnb2 | That tiny Picture from post 93? He wrote, that it was glued too heavily, so he didn't want to rip it off to check capacity. |
| 09:23:11 | speachy | the aliexpress batteries have a regulator IC and are slightly shorter on the long dimension than the original. |
| 09:23:54 | speachy | also slightly thicker. If I tighten down the case screws all the way a couple of the buttons don't operate properly. |
| 09:24:24 | johnb2 | I read some threads where they said the player/battery got very hot during charging. |
| 09:24:45 | johnb2 | Maybe that's without the protection circuitry. |
| 09:26:20 | speachy | yes. two reasons for that −− the first is that the CPU was running flat-out, even when idle. the second is due to the charging/battery circuitry. |
| 09:26:40 | speachy | the CPU is clocked _far_ lower now, and it's probably feasible to drop it further. |
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| 09:35:02 | speachy | can't do anything about the fact that the USB power supply circuitry seems to always draw over a watt. |
| 09:35:15 | speachy | (charging is purely HW controlled) |
| 09:35:23 | __bILGUS | I dig that leather case idea |
| 09:36:20 | __bILGUS | we can turn the charging on and off we could do d duty cycle of 3 on 2 off\ |
| 09:36:29 | __bILGUS | If |
| 09:36:50 | __bILGUS | give it a cool down period |
| 09:37:09 | speachy | __bILGUS we are supplied a GPIO that tells us if we're charging. that's it. |
| 09:37:34 | __bILGUS | oh well that expected I suppose but unfortunate |
| 09:39:35 | __bILGUS | I was writing asm in god bolt lastnight no clue where the code for greydata came from in C but for one it doesn't go at 8bytes a pop it goes by a single byte and I think some of the logic is off on the shifts |
| 09:40:27 | __bILGUS | I'm secent at arm asm so i'm back porting the clip+ routine to c |
| 09:40:58 | __bILGUS | decent, (not typing though apparently) |
| 09:41:22 | speachy | fixed the typo on the charger IC. |
| 09:41:36 | speachy | MCP73_8_63. :) |
| 09:43:04 | speachy | has no external comms capability. I'd be willing to bet that there's no temperature sensor hooked up to it. |
| 09:44:06 | __bILGUS | that is a bit scary guess this gets a metal box to charge in along with samsung devices |
| 09:44:45 | __bILGUS | minus the back it kinda in a metal box |
| 09:47:09 | speachy | wonder if there's a drop-in replacement for that SSD1306 screen that doesn't suck so much. |
| 09:48:44 | speachy | so.. I guess the original battery curve as committed is the 1500mAh unit. that explains the patch in Poretsky's tree to hack in two battery types |
| 09:50:19 | __bILGUS | how did he do it as far as selection goes? |
| 09:50:42 | __bILGUS | how did he do it as far as selection goes?i think a menu with settable mah values would suffice |
| 09:50:52 | speachy | the discharge curves are pretty different |
| 09:51:03 | speachy | there's already an option in the UI to select battery capacity |
| 09:51:27 | __bILGUS | how did he do it as far as selection goes?i think a menu with settable mah values would sufficei thought so after I said that |
| 09:51:37 | speachy | he abused the "battery type" configuration that was intended to select between alkaline and NiMH cells |
| 09:52:08 | __bILGUS | oh that is a decent idea |
| 09:53:00 | speachy | https://github.com/poretsky/rockbox/commit/4ee2b53a449fa740ef38056b9197ad7d8e77c71a |
| 09:53:04 | __bILGUS | you could also just infer |
| 09:57:00 | | Quit sakax (Read error: Connection reset by peer) |
| 09:57:13 | johnb2 | speachy https://cdn.head-fi.org/a/8657630.jpg shows how the tinted screen eats up the brightness of the display. |
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| 09:57:46 | __bILGUS | no I guess you couldn't was gonna say if runtime is > 6 hrs switch it but that would be annoying to have to run the first build for >6 hrs to get it to calibrate |
| 09:58:46 | speachy | johnb2: yeah, I should do that to mine. but I was thinking a higher-res screen in the same physical case/board footprint. |
| 09:58:52 | __bILGUS | johnb that is significant I wonder if I could get glass waterjet cut like that |
| 09:59:18 | __bILGUS | speachy that screen reminds me of the Clip+ its not that bad |
| 09:59:44 | speachy | it's the same resolution as the clip+ but even without the tinted window it's a lot dimmer. |
| 10:00 |
| 10:00:19 | __bILGUS | we can probably up the drive strength |
| 10:01:43 | __bILGUS | I think for the glass if I could get a rectangle blank of the right size I coul probably radius the corners with a diamond wheel |
| 10:02:33 | speachy | __bILGUS: we're already maxing out the brightness. I think anything else would require hardare mods. |
| 10:03:30 | __bILGUS | I'd have to look at the lcd code a bit closer but we should be able to set olded drive strength independent of brightness |
| 10:04:22 | __bILGUS | or irrespectivelying |
| 10:04:56 | speachy | I think changing that will require a hardware mod. section 8.8 of the SSD1306 datasheet |
| 10:05:15 | __bILGUS | oh and it has a 'dim mode setting' on the lcd controller wonder what that does |
| 10:07:09 | speachy | I don't see any reference to "dim mode", what version of the datasheet are you referencing? |
| 10:07:19 | johnb2 | https://www.head-fi.org/threads/rockbox-xduoo-x3.803844/page-144 : they use a Nintendo replacement screen as replacement for the "window" |
| 10:07:27 | __bILGUS | well poop these are very rigid hardware as far configurability goes |
| 10:08:29 | __bILGUS | johnb the plastic makes it feel cheap |
| 10:09:18 | __bILGUS | piece of thick soda glass with some polish would raise it a bit out of case and feel very nice under finger |
| 10:09:20 | speachy | huh, they cut the DS screen cover down. |
| 10:09:28 | johnb2 | That is true :-) but probably rather easy to implement. |
| 10:09:58 | __bILGUS | ill be doing it before I start using this in my truck |
| 10:10:27 | speachy | __bILGUS: word of warning −− this thing gets _hot_ when left in the sun. |
| 10:10:31 | __bILGUS | speachy https://cdn-shop.adafruit.com/datasheets/SSD1305.pdf |
| 10:10:58 | __bILGUS | I'm in the habit of bringing it in in the summer |
| 10:11:05 | speachy | __bILGUS: that's the 1305, not the 1306.. |
| 10:11:37 | __bILGUS | I found it by looking for the commands I didn't see anything listing the LCD controller |
| 10:12:00 | speachy | https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf |
| 10:12:10 | speachy | no dim mode on the 1306 |
| 10:13:34 | __bILGUS | how did you decide it was a 1306? |
| 10:14:03 | speachy | 1306 is 128x64 resolution. 1305 is 132x64 |
| 10:15:42 | __bILGUS | crowd goes wild, you powers of dadduction have exceded my own |
| 10:15:58 | __bILGUS | lol |
| 10:16:07 | speachy | no idea about the actual OLED display though. |
| 10:16:28 | __bILGUS | and they probably dont either |
| 10:17:18 | __bILGUS | well this should make my lcd exploration a bit simpler |
| 10:18:31 | __bILGUS | damn I was excited when I thought it had that split screen like the clip+ |
| 10:19:06 | speachy | well, you could swap out the display with one of those if you felt so inclined. :) |
| 10:20:03 | __bILGUS | nah thats just too much trouble |
| 10:21:03 | __bILGUS | wonder if this one has a dma too |
| 10:21:07 | speachy | johnb2: were there actual links to the screens they used? I'm having a hard time finding something that's not a "stick-on" |
| 10:22:31 | johnb2 | yes, but don't recall them. They said, just search for Nintento DS replacement screen on *bay |
| 10:22:46 | johnb2 | which I did. They were around 8 bucks. |
| 10:22:55 | speachy | __bILGUS: I don't think we can take advantage of the 4760's LCD controller. |
| 10:23:29 | johnb2 | https://www.ebay.com/itm/ZedLabz-replacement-screen-lens-plastic-cover-for-Nintendo-DS-Lite-NDSL-Black/372145611157?hash=item56a59b6195:g:asUAAOSwZNhfD6XP |
| 10:24:09 | johnb2 | that should yield two screens |
| 10:24:17 | speachy | __bILGUS: and we have to drive.. 12 pins? |
| 10:26:08 | speachy | hmm. the bitdelay() function isn't sane given the CPU reclocking. |
| 10:27:17 | __bILGUS | that area I don't believe to be sane in multiple ways |
| 10:27:42 | __bILGUS | I'm still playing with it atm |
| 10:29:20 | __bILGUS | i think the display is in parallel mode |
| 10:29:31 | speachy | yes, it's parallel in the 8080 mode, I believe. |
| 10:29:41 | speachy | that bitdelay needs to be >=40ns |
| 10:29:42 | __bILGUS | concur |
| 10:29:59 | speachy | (it's really the "data setup time") |
| 10:30:11 | __bILGUS | that probably explains some of the grey lib wonkyness good catch |
| 10:30:41 | speachy | could probably use one of the many HW timer peripherals to do this, assuming the pin can be remapped. |
| 10:35:49 | speachy | huh, this thing has a PS/2 keyboard controller |
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| 10:38:15 | __bILGUS | kitchen sink? |
| 10:45:20 | speachy | okay, we can't rely on the LCD controller or any HW peripherals to accelerate this |
| 10:46:44 | speachy | the I/Os used for the display are only muxed to the display controller and GPIO. |
| 10:50:05 | speachy | I'm using the OS Timer to implement udelay, we can piggy back on that (or do something similar with another timer) for the lcd delays. |
| 10:50:12 | speachy | s/lcd/oled/ |
| 10:54:18 | __bILGUS | that is probably sufficient I think thats how I did it for the Clip+ rewrite or maybe that was the SD |
| 10:58:30 | speachy | ugh, my udelay is actually mdelay. oops. |
| 11:00 |
| 11:02:52 | speachy | if I switch it to using PCLK rather than EXCLK, that'll give us a 96MHz base. |
| 11:03:16 | speachy | with a prescaler of 4, that'll give us 24 clocks per us, which is coincidentally 41ns. |
| 11:04:18 | speachy | make that 42ns. so with that we'd have a worst-case 84ns setup time. |
| 11:05:19 | speachy | the next lowest prescaler is 1.. 10.41ns per tick, worst-case setup time of 52ns |
| 11:05:53 | speachy | want me to make that change? |
| 11:07:13 | __bILGUS | sure I pull in the new stuff before I finish the grey routine |
| 11:07:21 | __bILGUS | I'll* |
| 11:07:55 | __bILGUS | I should probably do that on master and try it too |
| 11:18:02 | | Quit johnb2 (Quit: Nettalk6 - www.ntalk.de) |
| 11:19:29 | speachy | okay, it's written. appears to work. |
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| 11:59:19 | speachy | ...the new udelay() function was completely _broken_. |
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| 11:59:26 | speachy | embarrasingly so |
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| 12:00 |
| 12:01:14 | speachy | __bILGUS: g#2697 |
| 12:01:16 | fs-bluebot | Gerrit review #2697 at http://gerrit.rockbox.org/r/2697 : xduoox3: Fix delay funciton in LCD code to be cpufreq-agnostic (WIP) by Solomon Peachy |
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| 12:07:11 | speachy | It's running on my player now. |
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| 22:26:33 | __builtin | speachy: out of curiosity, how are you generating those screenshots? |
| 22:26:44 | __builtin | manually or fancier? |
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| 22:38:20 | speachy | via the uisim screenshot hotkey |
| 22:38:45 | speachy | if I wanted to be clever I could probably take the clipplus screenshots and convert them to all the same solor. |
| 22:39:05 | speachy | If I wasn't going through the manual to fill in keymaps too it would be a lot faster.. |
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icon identifies that the person is a core developer (has commit access).