topic Re: How to run gui_guider example application during very early boot on IMX93 in i.MX Processors

How to run gui_guider example application during very early boot on IMX93

Nobita — Fri, 08 Nov 2024 03:43:04 GMT

Hi Sir,

I have make an IMX93 fastboot-image following the doc: https://www.nxp.com/docs/en/application-note/AN14093.pdf

I am now able to achieve a result close to what is described in the documentation, where I start the kernel init process very early. My current issue is how to start the gui_guider example project as early as possible during the boot process. Currently, my gui_guider is already integrated into the flashed image, and I can manually enter the gui_guider command to start it and see the image display. However, when I start it using systemd, the image does not appear, even though I have specified for it to start after Weston. Below is my systemd configuration:

[Unit] Description=Start GUI Guider after Weston After=weston.service Wants=weston.service [Service] ExecStart=/usr/bin/gui_guider User=root Group=root WorkingDirectory=/home/weston Restart=always StandardOutput=tty StandardError=tty Environment=WAYLAND_DISPLAY=/run/wayland-0 TimeoutStartSec=10s [Install] WantedBy=multi-user.target

I have also heard that you have already implemented running gui_guider / lvgl very early in the boot process within the fastboot image. Could you share the detailed technical solution for that?

Sincerely!

Re: How to run gui_guider example application during very early boot on IMX93

Zhiming_Liu — Mon, 11 Nov 2024 05:37:32 GMT

Hello,

Could you share the detailed technical solution for that?

--> I am checking this with internal team and will reply here asap.

Best Regards,
Zhiming

Re: How to run gui_guider example application during very early boot on IMX93

Zhiming_Liu — Mon, 11 Nov 2024 06:30:06 GMT

Hi @Nobita

The bootup of lvgl demo is controlled by init script in /etc/init.d, the command to start lvgl is
/home/root/lvgl_demo & in this script.

Best Regards

Zhiming

Re: How to run gui_guider example application during very early boot on IMX93

Nobita — Tue, 12 Nov 2024 02:23:53 GMT

Hi @Zhiming_Liu ,

Here is my gui-guider sample code which is generated by Gui Guider-1.8.1-GA, I intergrated it into imx-yocto-bsp 6.1.36 build, My issue is that my program can display picture via the HDMI interface when I manually run the gui-guider command in a serial session, but it doesn’t show img when I set it to start automatically using init.d or systemd. Is it necessary to set environment variables or make other adjustments? would you please share your full init.d file or systemd file?

Sincerely

Re: How to run gui_guider example application during very early boot on IMX93

Zhiming_Liu — Tue, 12 Nov 2024 02:36:20 GMT

Hello,

Have shared project with message.

Best Regards,
Zhiming