We have created an LVGL App that runs in a Web Browser and on PinePhone…

1. We compiled LVGL Library from C to WebAssembly with Zig Compiler

2. We wrote our LVGL App in the Zig Programming Language (instead of C)

3. Exact same code runs in a Web Browser and on PinePhone (with Apache NuttX RTOS)

4. Which is super helpful for prototyping LVGL Apps

Check out the details in this article:

“NuttX RTOS for PinePhone: Feature Phone UI in LVGL, Zig and WebAssembly”

How it looks on PinePhone:



And how we tested in a Web Browser with WebAssembly:

Hi there, I received my pinetab2 this week. It seems that the provided keyboard is not working for me, while it is detected (Plasma interface resizes itself when connecting). Any idea how I could diagnose this ?

Hi,

Running Manjaro Phosh on my PPP.

There's a little very tiny blue indicator light in the upper left corner of the display. It is blinking.

What does this mean?

And is there a way to have it stop blinking?

Very annoying.

Thank you for any input!

Mark

Hi,

Running Manjaro Phosh on my PPP.

There's a little very tiny blue indicator light in the upper left corner of the display. It is blinking.

What does this mean?

And is there a way to have it stop blinking?

Very annoying.

Thank you for any input!

Mark

Hi,

There's a little very tiny blue indicator light in the upper left corner of the display. It is blinking.

What does this mean?

And is there a way to have it stop blinking?

Very annoying.

Thank you for any input!

Mark

I received my PineTab 2 a few days ago and tried to boot it up. Nothing on the screen and no sound but I did see the backlight on the keyboard come on a few seconds after turning on power. Tried booting from freshly burned SD card with the same results.

Finally connected the PineTab to my laptop using the debug adapter it came with and was able to see that it actually had booted up. I could log in through a terminal app and poke around the file system. But the screen stayed dark and there was no sound.

I've submitted a ticket on the problem but it's been three days and no response.

Has anyone else had similar problems? Were you able to resolve them?

Thanks.

Ken Ramey

I have one other question for the group. I'm finding it difficult to turn the screen off without powering it down. I have changed the settings to use the power button to turn the screen off in while on battery and wired but it appears to do nothing.

Is anyone else having this issue or is it a known issue? I've tried everything but nothing is working. Any advice would be much appreciated. Thank you in advance!

Hello,

Beside the default OS from DanctNix I would like to experiment with other OSes. Documentation states simply said "... put bootable OS on an SD-card and reboot ..." but that aint't gonna work obviously.

So now I try getting grip on the boot procedure. the boot partition (EFI) on the eMMC contains files for the u-boot boot loader. It has a routine (boot.txt) that checks for the presence of a SD and two or more partitions on it. It expects /boot with Image.gz, initramfs-linux.img and .dtb files on the first, and / (root) sits as the OS on the second.

As far as I can understand (I am not familiar with u-boot), without changing things on the eMMC, if I copy the files from the eMMC to a SD-card first partition and a compatible OS to a second partition, the SD-card might be bootable but I suppose Image.gz and initramfs-linux.img will need (Q1) to be altered ?  In this setup, if no SD-card is present, my Pinetab2 boots the default OS, if SD-card is present it will boot the one (and not more than one) OS on the SD-card.

Is there an easy way with u-boot to provide a boot menu and thus possible (Q2) access to multiple OSes ?  Has Tow-Boot something to do with it ?  I found some references but I'm not sure things apply to the Pinetab2 ...

Is it possible to (Q3) let UEFI provide boot options ?  It would need the Rockchip RK3566 and it's chipset to be UEFI aware, I suppose.

If I check the danctnix factory image file, I find multiple partitions. The first two have no mountable filesystem, the third has a extlinux.conf file and the fourth has the OS files. In this post Manuel Traut uses this setup to start from and then adapts partition 3 and 4 to run another OS. But (Q4) what is the function of the first two 'mystery' partitions ?  And (Q5) could there be some risk this setup will overwrite the eMMC as is originally intended ?

Finally, the Pinetab2 ships with a debug UART adapter. Is there (Q6) more information about this adapter than what I find in the Pinetab2 Wiki ?  Can I use this adapter to change the initial boot order where the eMMC has prevalence over the SD-card ?

Anyway, I'm looking forward to the next experiments !

I set up a cron job for user with crontab -e but is does not run. If I set the same job for root then it runs fine.  I do not have cron.allow in /etc and cron.deny is empty.

The other day I received Star64, for the convenience of placing information on RISC-V, it is desirable to have your own section to combine all the information in one place. 
Question.
Are you planning to create (in forum) an independent partition for RISC-V (Star64 etc) ?