Light control for Onyx Boox Note Air 3

[Kamilll]

This change is 

[Frenzie]

lgtm, pinging @hugleo

[hugleo]

lgtm if it’s been tested at least on einktest.

[Kamilll]

I think I am unable to successfully produce APK to test the change on my device.

Execution failed for task ':app:buildCMakeDebug[arm64-v8a]'.
> com.android.ide.common.process.ProcessException: ninja: Entering directory `/home/kamil/Projects/luajit-kamil/app/.cxx/Debug/1r284r2h/arm64-v8a'
  [1/1] Linking C shared library /home/kamil/Projects/luajit-kamil/app/build/intermediates/cxx/Debug/1r284r2h/obj/arm64-v8a/libluajit-launcher.so
  FAILED: /home/kamil/Projects/luajit-kamil/app/build/intermediates/cxx/Debug/1r284r2h/obj/arm64-v8a/libluajit-launcher.so 
  : && /home/kamil/Android/Sdk/ndk/23.2.8568313/toolchains/llvm/prebuilt/linux-x86_64/bin/clang --target=aarch64-none-linux-android21 --gcc-toolchain=/home/kamil/Android/Sdk/ndk/23.2.8568313/toolchains/llvm/prebuilt/linux-x86_64 --sysroot=/home/kamil/Android/Sdk/ndk/23.2.8568313/toolchains/llvm/prebuilt/linux-x86_64/sysroot -fPIC -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security  -fno-limit-debug-info  -static-libstdc++ -Wl,--build-id=sha1 -Wl,--no-rosegment -Wl,--fatal-warnings -Wl,--no-undefined -Qunused-arguments -shared -Wl,-soname,libluajit-launcher.so -o /home/kamil/Projects/luajit-kamil/app/build/intermediates/cxx/Debug/1r284r2h/obj/arm64-v8a/libluajit-launcher.so CMakeFiles/luajit-launcher.dir/android_native_app_glue/android_native_app_glue.c.o CMakeFiles/luajit-launcher.dir/jni_helper.c.o CMakeFiles/luajit-launcher.dir/main.c.o  -landroid  -llog  -lluajit-5.1  -pthread  -latomic -lm && :
  ld: error: unable to find library -lluajit-5.1
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  ninja: build stopped: subcommand failed.

The missing package seems to be installed:

kamil@fedora:~$ dnf repoquery --installed lua* luajit*
lua-0:5.4.8-4.fc42.x86_64
lua-devel-0:5.4.8-4.fc42.x86_64
lua-lgi-compat-0:0.9.2-22.fc42.x86_64
lua-libs-0:5.4.8-4.fc42.x86_64
lua-rpm-macros-0:1-15.fc42.noarch
lua-srpm-macros-0:1-15.fc42.noarch
luajit-0:2.1.1761727121-1.fc42.x86_64
luajit-devel-0:2.1.1761727121-1.fc42.x86_64
luajit2.1-luv-0:1.51.0.0-2.fc42.x86_64

kamil@fedora:~$ pkg-config --cflags --libs luajit
-I/usr/include/luajit-2.1 -lluajit-5.1

Do you see anything wrong here?
Is there any step by step instruction how to build the project?

[benoit-pierre]

You need to build the main koreader project (after updating it's luajit-launcher submodule to this PR top commit) not this project directly.

[Kamilll]

I manage to setup koreader's module to point to my repo but building the project for android (or linux) target is still impossible.
For the reference I see following exception:

     | [koreader 100%] Linking CXX shared library libkoreader-cre.so
▸100% | Installing 'koreader'
make[1]: warning: -j4 forced in submake: resetting jobserver mode.
make[6715]: make: Resource temporarily unavailable
make[6715]: *** [make/gettext.mk:17: mo] Error 127
make[6714]: *** [make/gettext.mk:17: mo] Error 2
make[6713]: *** [make/gettext.mk:17: mo] Error 2
... 6712 times more of that

I try to play a bit with process limits on my machine but failed miserably. I will not be further working on this. Thank for your time.

[Frenzie]

I'll just change it to draft. Closing it will make me forget. Which build do you need in order to test it, the regular ARM one?

[Kamilll]

To test it I would need android-arm64.

[Frenzie]

https://github.com/Frenzie/android-luajit-launcher/releases/download/fake-tag-keyboard-poc/koreader-android-arm64-debug-v2026.03-40-g612141220_2026-04-06-for-587.apk

[Kamilll]

Thanks! I was able to test my previous change (specifically setting light factory to be OnyxSdkLightsController) and it it work but the scale in the slider was incorrect. I poke around and I figured out that other Controller (OnyxAdbLightsController) works great on my device:

On the other hand, I noticed that the debug APK suffers from ghosting effects on the e-ink screen, the defect does not exist in the app from the official distribution. I am wondering, if the problem has something to do with the EDP Controller I changed in this pull request. (Not the best quality) Photo for reference:

[hugleo]

Onyx recently updated the firmware for many devices and I’ve noticed some small issues with the sdk driver. Please test these new changes: #586
They may solve your scale problem.