LVGL MIPI screen can't enter to partial refresh mode

[Vinos]

Chip:MIMXRT1176

SDK Version:2.13.1

I've implemented SDK examples:lvgl_guider_cm7,and I don't want the screen to refresh everytime.

So I set disp_drv.full_refresh = 0 which means partial refresh mode in function lv_port_disp_init(),then the screen is mixed and flickering.

It seems to be related to the command and video mode,and the flush_cb should be modified?

How can I fix this?

[Vinos]

I've seen a related post,NXP SDK doesn't support non-full-refresh mode?

https://forum.lvgl.io/t/imxrt1170-kits-updated-to-v8-running-only-full-refresh-mode/7829 

[jingpan · Accepted solution]

Hi @Vinos ,

You can refer to this post.

https://blog.csdn.net/zhoutaopower/article/details/124600483

At the begin, it shows LVGL has three mode. It use first one. But RT1170 LVGL demo use the third and remove other two. I think it is because MIPI and LCD interface can't support partial display.

Regards,

Jing