How do I debug CRAS

[wwd-615]

Can you give me a hand? I added a debug statement to snd_pcm_cras_open, and executed emerge-${BOARD} media-sound/adhd and other compiling commands. But I didn't find my print statement in /var/log on ChromiumOS

[Damenly]

May I know if anything works abnormally in your raspberry_pi?

Suggest to use syslog() to output debug to /var/log/messages.

[wwd-615]

yes，I use syslog(), but there is no corresponding print in message.

[Damenly]

Do you call openlog() first? Or call exit() so the process will crash intentionally to confirm the function was called.

[wwd-615]

Ok, thank you very much. I'll have a try

[wwd-615]

Maybe my changes didn't compile to image， I first modified the src/third_party/adhd/cras/src/alsa_plugin/pcm_cras.c file, then use the command sudo emerge-${BOARD} media-sound/adhd, then use./build_image --board=${BOARD} --noenable_rootfs_verification dev, finally use the cros flash usb:// ${BOARD}/latest command But my changes didn't go into Raspberry PI. Can you tell me how to correctly compile my changes into Raspberry PI

[wwd-615]

I came to this conclusion because I made a deliberate error, but the compiler did not report an error

[Damenly]

No need to build_image wasting time. You can call emerge-${BOARD} media-sound/adhd then cros deploy ${ip} media-sound/adhd see https://chromium.googlesource.com/chromiumos/docs/+/main/cros_deploy.md.

[wwd-615]

hi，I follow the documentation https://chromium.googlesource.com/chromiumos/docs/+/main/developer_guide.md Execute the following command: cros_workon --board=${BOARD} start media-sound/adhd cros_workon_make --board=${BOARD} media-sound/adhd cros_workon_make --board=${BOARD} media-sound/adhd --install ./build_image --board=${BOARD} --noenable_rootfs_verificatio cros_workon --board=${BOARD} stop media-sound/adhd Then I run the build image command and I get an error "All ebuilds that could satisfy "media-sound/adhd" for /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_195945-a1/rootfs/ have been masked" Could you tell me how to solve this problem?

[Damenly]

Just use emerge after call of cros_workon as the doc says:

Alternatively, you can build your package using emerge-${BOARD} and quickly install it to the device by using [cros deploy](https://chromium.googlesource.com/chromiumos/docs/+/main/cros_deploy.md).

For example, if you want to build ec-utils to test on your device, use

[wwd-615]

Since I used the dev image earlier, I need to re-execute ./build_image --board=${BOARD} --noenable_rootfs_verification test, However, the following error occurs when the command is executed: "All ebuilds that could satisfy "media-sound/adhd" for /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_195945-a1/rootfs/ have been masked" So I need to fix it

[Damenly]

Please paste context around "All ebuilds that could satisfy "media-sound/adhd" for /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_195945-a1/rootfs/ have been masked". There should be a reason why the package is masked in the output.

And emerge-${BOARD} --info media-sound/adhd

[wwd-615]

This is log information, thank you very much for your help: Setting up symlinks for /usr/local for /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/stateful/dev_image 20:30:38 INFO : Image specified by /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1 mounted at /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/rootfs successfully. Setting up symlinks for /usr/local for /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/stateful/dev_image 20:30:38 INFO : Running: sudo tar -Ilbzip2 -xpf /var/lib/portage/pkgs/cross-armv7a-cros-linux-gnueabihf/glibc-2.33-r16.tbz2 -C /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/rootfs ./usr/armv7a-cros-linux-gnueabihf --strip-components=3 --exclude=usr/include --exclude=sys-include --exclude=.[ao] --exclude=usr/bin/getent --exclude=usr/bin/ldd --exclude=lib/libmemusage.so --exclude=lib/libpcprofile.so --exclude=lib/libSegFault.so --exclude=usr/lib/audit --exclude=lib/libnss_compat.so --exclude=lib/libnss_db.so --exclude=lib/libnss_hesiod.so --exclude=lib/libnss_nis.so --exclude=lib/libnss_nisplus.so --exclude=lib/libBrokenLocale.so* 20:30:38 INFO : Running: sudo -E /mnt/host/source/chromite/bin/parallel_emerge --board=rpi4 --root-deps=rdeps --usepkgonly -v --with-bdeps=n --root=/mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/rootfs virtual/target-os 20:30:39.274: INFO: Running: emerge --usepkgonly '--with-bdeps=n' virtual/target-os --sysroot /build/rpi4 --root /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/rootfs '--root-deps=rdeps' '--jobs=4' '--rebuild-exclude=chromeos-base/chromeos-chrome' '--rebuild-exclude=chromeos-base/chromium-source' '--rebuild-exclude=chromeos-base/chrome-icu' !!! CONFIG_PROTECT is empty for '/mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/rootfs/' !!! CONFIG_PROTECT is empty for '/build/rpi4/' Calculating dependencies... done!

!!! All ebuilds that could satisfy "media-sound/adhd" for /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/rootfs/ have been masked. !!! One of the following masked packages is required to complete your request:

• media-sound/adhd-9999::baseboard-rpi3 (masked by: missing keyword)

(dependency required by "virtual/target-chromium-os-1-r201::chromiumos" [binary]) (dependency required by "virtual/target-os-1-r5::chromiumos" [binary]) (dependency required by "virtual/target-os" [argument]) For more information, see the MASKED PACKAGES section in the emerge man page or refer to the Gentoo Handbook.

Entering /mnt/host/source/src/scripts/mount_gpt_image.sh --unmount --from /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/chromiumos_base_image.bin --rootfs_mountpt /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/rootfs --stateful_mountpt /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/stateful --esp_mountpt /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/esp --delete_mountpts 20:30:50 INFO : Unmounting image from /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/stateful and /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/rootfs 20:30:50 INFO : Unmounting temporary rootfs /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/rootfs//build/rootfs. Cleaning up /usr/local symlinks for /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/stateful/dev_image 20:30:50 INFO : Running sync -f /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1/chromiumos_base_image.bin partx: specified range <1:0> does not make sense An error occurred in your build so your latest output directory is invalid. Would you like to delete the output directory (y/N)? y Deleted /mnt/host/source/src/build/images/rpi4/R102-14695.195.0-d2023_04_27_203033-a1

[wwd-615]

This is the log information after executing the emerge-${BOARD} --info media-sound/adhd command log.txt

[Damenly]

There is a line KEYWORDS="~*" in adhd-9999.ebuild. Changing it to KEYWORDS="*" should let compile pass.

[wwd-615]

Thank you very much. I have solved the problem with your help

[wwd-615]

Hi，did chromium_os-raspberry_pi crop out the part about cras_dsp_module? If I want to use drc algorithm on Raspberry PI, how do I apply it? Can you give me a hand？