January 21, 2020, 02:17:39 pm

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1
A64 / Re: Recharge Question
Last post by LubOlimex - Today at 09:12:43 am
Battery is automatically recharged when you have another sufficient source of power applied to the board. Good enough supply is usually 5V external power supply applied to the power jack.

The power jack is described here: https://www.olimex.com/wiki/PWRJACK

"The A64-OLinuXino board is fully powered by applying 5V of voltage over the power jack connector named "PWR1"."

USB is not considered sufficient source of power for this board, and can't be used to power the board and it's peripherals:

"The A64-OLinuXino board CAN NOT and SHOULD NOT be powered via the micro USB connector "USB-OTG1", nor via type A female USB connector "USB1", nor via any of the "GPIO1" pads, nor via the "UEXT1" pads, nor via Ethernet connector "LAN1", nor via "HDMI1" connector, nor via "HSIC1" pads, nor via nor "IPS1" pad, etc."





2
A20 / Error building Armbian/Olimex ...
Last post by novalkar - Today at 04:40:56 am
I was trying to generate the Armbian image (buster release) from your repository https://github.com/OLIMEX/build for the olimex-a20 board, but while the build process was running, the debootstrap process ended up crashing with the following output

[ o.k. ] Installing packages for [ Armbian ]

Reading package lists...
Building dependency tree...
Reading state information...
E: Unable to locate package armbian-firmware

In the end, the build script was able to generate an image, but it was missing most of the basic tools. I first noticed the problem because toilet package didn't run and it didn't show the fancy olimex message on the terminal, it also crashes the armbian-add-overlay tool, so I can't easily add my overlays.

Searching deeper I was able to find out that the failure was produced on this line:

https://github.com/OLIMEX/build/blob/olimex/lib/debootstrap.sh#L225-L229

and found that the missing packages where listed here:

https://github.com/OLIMEX/build/blob/olimex/lib/configuration.sh#L136

I was able to install those packages manually on the board afterwards without problems.

I don't know why it wasn't able to install those packages since it could install other packages before those, and I was able to install some other packages afterward through the customize-image script (I was able to reproduce this on a clean build too). I would still like to generate a clean image, but I haven't been able to do this since last Friday, is this a known issue? or it is just me?
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A64 / Re: Recharge Question
Last post by HarrisonCreates - Today at 01:01:27 am
Quote from: LubOlimex on January 20, 2020, 12:12:51 pmThe current from the USB is not usually sufficient to power the board. In order to charge the battery the supply should be powerful enough to power the board + extra current for charging. This note in the document should not be taken lightly:

IMPORTANT! The A64-OLinuXino board is fully powered by applying 5V of voltage over the power jack connector named "PWR1". The board can also be powered by a 3.7V Li-Po battery attached to the "LIPO_BAT1" connector (there is a step-up convertor to 5V, so the USB ports would still work, albeit with lower current output available). For people that want to embed the board in their own designs and find using power jack "PWR1" inconvenient, please use the pad of "FUSE2" to provide power supply (and any on-board "GND" wire or pad - good places for GND are pad #2 from "UEXT1" or pad #2 from "GPIO1" or the GND pad of the "HSIC1").

The A64-OLinuXino board CAN NOT and SHOULD NOT be powered via the micro USB connector "USB-OTG1", nor via type A female USB connector "USB1", nor via any of the "GPIO1" pads, nor via the "UEXT1" pads, nor via Ethernet connector "LAN1", nor via "HDMI1" connector, nor via "HSIC1" pads, nor via nor "IPS1" pad, etc. Some of the pins of the mentioned connectors and interfaces might have wires, pads, or pins marked as "+3.3V" or "+5V" in the schematics or in the board design files but these are outputs only and NOT power inputs.



Okay, so how should I charge the battery connected to the board? What do I plug into? The board description says "onboard battery charging" so I'm curious on how to utilize it. I read the above notice, but it doesn't mention anything about charging, just about powering the board.

So I apologize, I should have specified what I meant by my question: how do I charge my 3.7V Li-ion battery that is connected to the A64?
4
A20 / Re: Looking detailed informati...
Last post by LubOlimex - January 20, 2020, 01:03:25 pm
This might be helpful for initial understanding and simple tests: https://olimex.wordpress.com/2019/01/25/working-with-a20-olinuxino-or-som-gpios-when-using-new-armbian-based-a20-universal-linux-image/

For further reading check here: https://www.kernel.org/doc/Documentation/gpio/sysfs.txt

If you wish for the recommended approach and automatic usage in your code check here: https://github.com/brgl/libgpiod
5
TERES DIY Laptop / Re: Flash a new image
Last post by LubOlimex - January 20, 2020, 12:47:09 pm
I don't know about Arch, but you should try the latest official image.

Torrent is available here:

ftp://staging.olimex.com/Allwinner_Images/A64-Teres/linux/xenial-teres-bspkernel-20190121_144941_EET-1_hdmi_out_v1_5.torrent

Username and password should be olimex/olimex

Refer to chapter "10. Installing a fresh official image to TERES-I" on page 39 of this document: https://github.com/OLIMEX/DIY-LAPTOP/blob/master/doc/manuals/TERES-I-rev1.5.pdf
6
A64 / Re: Recharge Question
Last post by LubOlimex - January 20, 2020, 12:12:51 pm
The current from the USB is not usually sufficient to power the board. In order to charge the battery the supply should be powerful enough to power the board + extra current for charging. This note in the document should not be taken lightly:

IMPORTANT! The A64-OLinuXino board is fully powered by applying 5V of voltage over the power jack connector named "PWR1". The board can also be powered by a 3.7V Li-Po battery attached to the "LIPO_BAT1" connector (there is a step-up convertor to 5V, so the USB ports would still work, albeit with lower current output available). For people that want to embed the board in their own designs and find using power jack "PWR1" inconvenient, please use the pad of "FUSE2" to provide power supply (and any on-board "GND" wire or pad - good places for GND are pad #2 from "UEXT1" or pad #2 from "GPIO1" or the GND pad of the "HSIC1").

The A64-OLinuXino board CAN NOT and SHOULD NOT be powered via the micro USB connector "USB-OTG1", nor via type A female USB connector "USB1", nor via any of the "GPIO1" pads, nor via the "UEXT1" pads, nor via Ethernet connector "LAN1", nor via "HDMI1" connector, nor via "HSIC1" pads, nor via nor "IPS1" pad, etc. Some of the pins of the mentioned connectors and interfaces might have wires, pads, or pins marked as "+3.3V" or "+5V" in the schematics or in the board design files but these are outputs only and NOT power inputs.

7
A20 / Looking detailed information a...
Last post by chirag.mistry - January 20, 2020, 08:50:31 am
I am using T2-OLinuXino-LIME-e4Gs16M-IND Olimex board and I am looking to access and program its GPIOs. But I could not find proper document or link for A20 LIME board's GPIO pin information, its mapping and about programming it on Linux and Python. Online link talk about A10 board. I could find one PDF but it is talking about A20 Micro board. Provide link or pdf file about accessing GPIOs of T2-OLinuXino-LIME-e4Gs16M-IND Olimex board on Linux.

Regards
Chirag
8
A20 / yocto build for A20
Last post by amitjoshi - January 19, 2020, 08:20:28 am
I am trying to build custom image for A20. I am following steps given in below link.

http://project-magpie.github.io/yocto/2014/09/26/building-a-yocto-image-for-the-a20-olinuxino-lime/

for step - git clone https://github.com/cybertux/meta-sunxi.git

I am getting error - fatal: repository 'https://github.com/cybertux/meta-sunxi.git/'; not found

Is cybertux is not available now?

If it is not available can anybody tell me that how i can get it?
9
A64 / Recharge Question
Last post by HarrisonCreates - January 18, 2020, 09:18:08 pm
Hello All,

Simple question here. I just want to confirm I'm not about to fry anything.

Is the micro-usb port on the A64 meant to recharge my 3.7v Li-ion battery?

Thanks!
10
TERES DIY Laptop / Flash a new image
Last post by alex9999999999 - January 17, 2020, 06:41:02 pm
Hello to everybody,

i'm not sure if this is the right category for this topic.
I try to install Arch on the TERES-I. The Image is on the SD-Card but i can't boot from it.

I've didn't used this Laptop for years. Thats the reason i coudn't remember the passphrase for my account.
Only have access to the guest session where i can see the Image on the Card.

is there any trick to get boot from SD Card?
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