#linux-sunxi on 2021-01-06 — irc logs at freenode.irclog.whitequark.org

2018-08-03 10:18 rellla changed the topic of #linux-sunxi to: Allwinner/sunxi /development discussion - did you try looking at our wiki? https://linux-sunxi.org - Don't ask to ask. Just ask and wait! - https://github.com/linux-sunxi/ - Logs at http://irclog.whitequark.org/linux-sunxi - *only registered users can talk*

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05:30 <gediz0x539> MoeIcenowy: +1

05:30 <gediz0x539> looks like CSS is changed

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13:18 <gediz0x539> anybody know what kind of hotword detection/keyword spotting algorithm is utilized in R329?

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16:06 <apritzel> Hi, can anyone with a Pine64-LTS please confirm that they a) have two LEDs and b) that there is blue LED on pin PL7?

16:06 <apritzel> "gpio clear pl7" should light that LED up in U-Boot, gpio set pl7 should turn it off again

16:07 <apritzel> it seems like both wens and I got special boards, so just want to check before adding this LED to the official DT

16:07 <wens> apritzel: I'll try out mine tomorrow

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16:32 <willmore> mirko, I've seen that when driving a WS2812B with a 3.3V SoC. The first device often had the wrong color. The solution was to put a diode in the voltage supply. That, somehow, made it start to behave. Strange, but it worked.

16:33 <willmore> Clearly don't do that for a long strip as you'll have color accuracy problems on a >60 LED strip for sure. Plan B is to use some kind of buffer to do level translation.

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16:59 <jernej> apritzel: should I also resend OrangePi 3 U-Boot patches without PSCI_RESET disabled config?

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17:00 <apritzel> jernej: eventually yes, but I plan on reviewing them tonight, so you might want to hold off on this for a bit

17:00 <jernej> ok, I'll wait till tomorrow then

17:01 <jernej> apritzel: please also check H6 DDR3 fix I send a while back, it would be nice if it gets merged

17:01 <apritzel> yes, that is on my list as well

17:01 <jernej> it's field tested, without any complain

17:01 <jernej> ok, great

17:01 <apritzel> it looks alright, I just wanted to give it a test here as well

17:03 <wens> read in the news that there is a shortage of PMICs, WiFi/BT and other analog chips

17:04 <apritzel> wens: in general, or just Allwinner ones?

17:11 <wens> apritzel: in general. what I heard was that it was affecting smart phone production

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17:42 <bauen1> apritzel: if you can give me commands to pass to sunxi-fel then i can test mine too, i got this board for free from tllim a few months back (wow time really does fly)

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17:55 <apritzel> bauen1: sunxi-fel writel 0x01f01428 0x81 writel 0x1f02c00 0x17777777

18:02 <bauen1> apritzel: it does have 2 leds looking out the side of the board, and i think another smd led near the dc jack

18:02 <apritzel> bauen1: yes, that sounds about right. One of the two LED is controlled by the PMIC (charge LED)

18:03 <bauen1> apritzel: but the 2 on the side are controlled by the a64 ?

18:03 <apritzel> the green SMD one is directly connected to the power socket, so lights up as soon as you have some voltage in there

18:04 <apritzel> I meant one of two two next to each other is this PMIC controlled one, the other is connected to the A64's PL7 pin

18:06 <bauen1> apritzel: it works, the blue led (furthest from the usb ports) lights uo

18:06 <bauen1> *up

18:07 <apritzel> bauen1: cool, many thanks!

18:07 <apritzel> wens: see ^^^ , we are already three people where this works ;-)

18:09 <wens> apritzel: did you get your board from tllim as well?

18:09 <apritzel> wens: yes, I think at some FOSDEM

18:10 <apritzel> wens: so I share your concerns about not having off-the-shelf versions

18:15 <wens> I also find it interesting that they used the same resistor value for the status LED as the power LED

18:15 <wens> one being blue, while the other is green

18:16 <wens> apritzel: I suppose we need to ask if anyone here bought theirs :p

18:16 <bauen1> lol

18:17 <bauen1> it's nice how the leds on the Pine64-LTS don't burn your eyes out

18:17 <apritzel> wens: yeah, but I guess many people in here are in the same boat ;-)

18:17 <wens> or maybe I should just ask tllim

18:17 <bauen1> if it's just an u-boot command to activate the led, i'm sure we can find someone on the pine64 discord to confirm it

18:17 <apritzel> bauen1: thinking about the Pine H64?

18:17 <bauen1> apritzel: yes

18:17 <wens> bauen1: the green ones on the h64 are super bright *squint*

18:18 <bauen1> i can't even get my red leds that bright if i remove the resistor and pump 5v through them (i think at least)

18:18 * apritzel puts on his sunglasses

18:18 <wens> bauen1: they'd burn out first lol

18:18 <bauen1> wens: i think they're rated for 5v, so i think that should work

18:20 <wens> put a multimeter in series and see how much current is going through it?

18:20 <bauen1> wens: i don't have a multimeter

18:20 <bauen1> still need to buy one, but also don't want to get some cheap thing that lasts 3 weeks

18:22 <apritzel> bauen1: I have a cheap one (well, from Conrad) that lasts for about 15 years now ;-)

18:22 <bauen1> apritzel: do they still sell it ?

18:23 <bauen1> recently my parents bought one (relatively cheap) but the probe pins broke after a few uses

18:24 <mru> can you afford a fluke 87?

18:25 <bauen1> mru: 500usd is a bit out of my price range lol

18:25 <mru> are they that expensive?

18:25 <bauen1> https://www.fluke.com/en-us/product/electrical-testing/digital-multimeters/fluke-87v

18:25 <bauen1> i suppose it's on sale for ~400usd right now

18:26 <apritzel> bauen1: Lol, googling for my model points me to radiomuseum.org ;-)

18:27 <bauen1> i've posted on the pine64 discord, let's see if someone wants to test this led

18:27 <apritzel> bauen1: many thanks!

18:27 <mru> ah, the fluke 110 series are much cheaper

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18:28 <apritzel> bauen1: I guess you can take one of those Voltcraft VC models, between 20 and 30 EUR

18:29 <apritzel> bauen1: that should have some basic build quality

18:29 <apritzel> (just get some extra fuses if you plan on measuring current)

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18:31 <bauen1> apritzel: thanks, i'll take a look

18:33 <bauen1> but if e.g. https://www.conrad.com/p/voltcraft-vc130-1-handheld-multimeter-digital-cat-iii-250-v-display-counts-2000-1090519#! can go up to 10a at 250v, won't i have other things to worry about before i blow the fuse

18:33 <bauen1> i mean consumer grade extension cords are usually limited to ~3.5kW around here

18:42 <apritzel> bauen1: the low current measurement path is protected by an 200mA fuse, and that's easy to exceed (accidentally)

18:42 <apritzel> you can measure higher current, but with less accuracy

18:42 <apritzel> I guess this is one of the drawbacks - at least is on mine, maybe they fixed it

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