About Jzhua

Jzhua · 2022-02-17

I make st-example-image-qt image with openstlinux-5.10on the board, i can't run any qt exampls , when i run a qt app,i get this Could not open egl display Aborted (core dumped)do i miss something

Jzhua · 2021-08-16

i‘m not using qt or other 3rd gui framweork, no weston, no x, just direct use drm api，i need switch off lcd after some time is not operated，i google it a while，It looks i need a complete desktop environment to do that，so i want know is any way to do ...

Jzhua · 2021-02-21

I'am using 26M oscillator on stm32H750VB device, it's not working on rev V, but same configure is work fine on rev Y.

Jzhua · 2020-12-15

Cannot set a time greater than 2038, whether in the console or the c program

Jzhua · 2020-12-02

Is it possible to generate mingw32 sdk in Yocto

Jzhua · 2022-02-21

it's working now

Jzhua · 2022-02-18

another question.The application starts reporting qt.qpa.input: xkbcommon not available, not performing key mappingthe keyboard not working,i add libxkbcommon to image, still not working

Jzhua · 2022-02-18

i remake the image, it's ok now.i think maybe some error occurred in the build process that made some files invalid

Jzhua · 2021-09-03

i found a easy way to do thatvoid drm_blank(int blank) { if(lcd_drm && lcd_drm->main_monitor_crtc){ if(blank){ // disbale crtc drmModeSetCrtc(lcd_drm->fd, lcd_drm->main_monitor_crtc->crtc_id, 0, // fb_id 0, 0, // x,y NULL, /...

Jzhua · 2021-08-31

Okay, I will continue to learn about the content

User statistics

User Activity

can't run qt exampls on DK2

how to switch off lcd by using drm ?

HSE BYPASS clock not working on stm32H750

Cannot set a time greater than 2038

Is it possible to generate mingw32 sdk in Yocto

Re: can't run qt exampls on DK2

Re: can't run qt exampls on DK2

Re: can't run qt exampls on DK2

Re: how to switch off lcd by using drm ?

Re: how to switch off lcd by using drm ?